# # National Water Information System # 2024/03/28 # # # Date Retrieved: USGS Water Data for the Nation Help System # state_cd aqfr_cd aqfr_nm 2s 8s 70s 00 200CRSL Crystalline Rocks 01 100CNZC Cenozoic Erathem 01 110QRNR Quaternary System 01 110QRRT Quaternary-Tertiary Systems 01 111ALVM Holocene Alluvium 01 111CSTL Coastal Deposits 01 111HCPC Holocene-Pleistocene Series 01 111HLCN Holocene Series 01 111LTAV Low Terrace Deposits, Alluvium 01 111RGLT Regolith 01 111RSDM Residuum 01 111SPRL Saprolite 01 112HGTC High Terrace Deposits 01 112IMTC Intermediate Terrace Deposits 01 112LTRC Low Terrace Deposits 01 112PLSC Pleistocene Series 01 112TRRC Terrace Deposits 01 120TRCC Tertiary-Cretaceous Systems 01 120TRTR Tertiary System 01 121CRNL Citronelle Formation 01 121PLCN Pliocene Series 01 122CTHLS Catahoula Sandstone 01 122MCEC Miocene-Eocene Series 01 122MOCN Miocene Series 01 122PHMK Paynes Hammock Sand 01 122RSDM Residuum-South Alabama 01 123BCTN Bucatunna Clay Member of Byram Formation 01 123BYRM Byram Formation 01 123CCKS Chickasawhay Limestone 01 123FRHL Forest Hill Sand 01 123GLND Glendon Limestone Member of Byram Formation 01 123MRNN Marianna Limestone 01 123OLGC Oligocene Series 01 123RDBF Red Bluff Clay 01 123VKBG Vicksburg Group 01 124BLDG Bells Landing Marl Member of Tuscahoma Sand 01 124BSHI Bashi Marl Member of Hatchetigbee Formation 01 124CLBR Claiborne Group 01 124COCO Cocoa Sand Member of Yazoo Clay 01 124EOCN Eocene Series 01 124GGLG Greggs Landing Marl Member of Tuscahoma Sand 01 124GMPH Grampian Hills Member of Nanafalia Formation 01 124GSPR Gosport Sand 01 124GVCK Gravel Creek Sand Member of Nanafalia Formation 01 124HCGB Hatchetigbee Formation 01 124JCKS Jackson Group 01 124LSBN Lisbon Formation 01 124MDBC Moodys Branch Formation 01 124MRDN Meridian Sand Member of Tallahatta Formation 01 124NSHB Neshoba Sand Member of Tallahatta Formation 01 124NTCK North Twistwood Creek Member of Yazoo Clay 01 124OCAL Ocala Limestone 01 124PCHT Pachuta Marl Member of Yazoo Clay 01 124SHBT Shubuta Member of Yazoo Clay 01 124TLLT Tallahatta Formation 01 124WLCXG Wilcox Group 01 124YZOO Yazoo Clay 01 125CLBF Coal Bluff Marl Member of Naheola Formation 01 125CLTN Clayton Formation 01 125MCBD Mc Bryde Limestone Member of Clayton Formation 01 125MDWY Midway Group 01 125MLDG Matthews Landing Marl Member of Porters Creek Clay 01 125NHOL Naheola Formation 01 125NNFL Nanafalia Formation 01 125OKHL Oak Hill Member of Naheola Formation 01 125PLCN Paleocene Series 01 125PNBR Pine Barren Member of Clayton Formation 01 125PRCK Porters Creek Clay 01 125SLMN Salt Mountain Limestone 01 125TSCM Tuscahoma Sand 01 125WLCX Wilcox Group 01 200MSZC Mesozoic Erathem 01 210CCJC Cretaceous-Jurassic Systems 01 210CRCS Cretaceous System 01 211ARCL Arcola Limestone Member of Mooreville Chalk 01 211BLFN Blufftown Formation 01 211BLFP Bluffport Marl Member of Demopolis Chalk 01 211COKR Coker Formation 01 211CRCSU Upper Cretaceous Series 01 211CUST Cusseta Sand Member of Ripley Formation 01 211DMPL Demopolis Chalk 01 211EMCS Eutaw-Mc Shan Formations, Undifferentiated 01 211EOLN Eoline Member 01 211EUTW Eutaw Formation 01 211GORD Gordo Formation 01 211MCSN Mc Shan Formation 01 211MRVL Mooreville Chalk 01 211MSSV Massive Sand 01 211PBLF Prairie Bluff Chalk 01 211PROT Perote Member of Providence Sand 01 211PVDC Providence Sand 01 211RPLY Ripley Formation 01 211SELM Selma Group 01 211SRGR Stringer Sand 01 211TBGB Tombigbee Sand Member of Eutaw Formation 01 211TUCL Tuscaloosa Group 01 211TUCLL Tuscaloosa Group, Lower Member 01 211TUCLM Tuscaloosa Group, Middle Member 01 211TUCLU Tuscaloosa Group, Upper Member 01 217CRCSL Lower Cretaceous Series 01 217VICK Vick Formation 01 220JCTC Jurassic-Triassic Systems 01 220JRSC Jurassic System 01 230TCPM Triassic-Permian Systems 01 230TRSC Triassic System 01 300PLZC Paleozoic Erathem 01 310PMPV Permian-Pennsylvanian Systems 01 310PRMN Permian System 01 320PRKD Parkwood Formation 01 320PSLV Pennsylvanian System 01 320PVMP Pennsylvanian-Mississippian Systems 01 324PSLVL Middle-Lower Pennsylvanian Series 01 324PSVL Pottsville Formation 01 330MSSP Mississippian System 01 331BNGR Bangor Limestone 01 331FLYD Floyd Shale 01 331HRSL Hartselle Sandstone 01 331MNGL Monteagle Limestone 01 331MSSPU Mississippian, Upper 01 331PNNG Pennington Formation 01 331PRDM Pride Mountain Formation 01 331TCMB Tuscumbia Limestone 01 337FRPN Fort Payne Chert/formation 01 337MPDV Mississippian-Devonian System 01 337MSSPL Mississippian, Lower 01 337MURY Maury Formation 01 340DVNM Devonian System 01 340DVSL Devonian-Silurian Systems 01 341CTNG Chattanooga Shale 01 341DVNNU Devonian, Upper 01 344DVNNM Devonian, Middle 01 344FRGM Frog Mountain Sandstone 01 350RDMN Red Mountain Formation 01 350SLRN Silurian System 01 354WYNE Wayne Group 01 357BFLD Brassfield Limestone 01 360ODVC Ordovician System 01 361FRVL Fernvale Limestone 01 361INMN Inman Formation 01 361LPRS Leipers Limestone 01 361MNNI Mannie Shale 01 361ODVCU Ordovician, Upper 01 361SQTC Sequatchie Formation 01 364ATNS Athens Shale 01 364ATTL Attalla Chert Conglomerate Member of Chickamauga Limestone 01 364BGBC Bigby and Cannon Limestones 01 364CKMG Chickamauga Limestone 01 364CLVM Colvin Mountain Sandstone 01 364CRRS Carters Limestone 01 364CTYS Catheys Limestone 01 364GEPR Greensport Formation 01 364HRMG Hermitage Formation 01 364LLOK Little Oak Limestone 01 364LNOR Lenoir Limestone 01 364NSVL Nashville Group 01 364ODVCM Ordovician, Middle 01 364SRVR Stones River Group 01 367CPPC Chepultepec Dolomite 01 367KNOXG Knox Group 01 367LNGV Longview Limestone 01 367NEWL Newala Limestone 01 367ODVCL Ordovician, Lower 01 367ODVL Odenville Limestone 01 367OVCB Ordovician-Cambrian Systems 01 370CBPB Cambrian System-Precambrian Erathem 01 370CMBR Cambrian System 01 371BIBB Bibb Dolomite 01 371CMBRD Upper-Middle Cambrian Series 01 371CMBRU Cambrian, Upper 01 371CNSG Conasauga Formation 01 371CPRG Copper Ridge Dolomite 01 371KNOX Knox Group 01 374BFLD Brierfield Dolomite 01 374CMBRM Cambrian, Middle 01 374CNSG Conasauga Formation 01 374KTON Ketona Dolomite 01 377CMBRL Lower Cambrian Series 01 377ROME Rome Formation 01 377SHDY Shady Dolomite 01 377WESR Weisner Quartzite 01 400PCMB Precambrian Erathem 01 BASEMENT Basement 01 BEDROCK Bedrock 02 000MCRL Mount Crillon Gabbro 02 000SELS St Elias Schist 02 000UNNB Union Bay Ultramafic Complex 02 100ILRK Ilyirak Gravel 02 100NLJN Nellie Juan Granite 02 100SGVK Saligvik Gravel 02 100WLCV Williwaw Cove Formation 02 110ARCP Arch Point Basalt 02 110ASSK Ashishik Basalt 02 110BCKP Black Point Basalt 02 110BLDR Buldir Volcanics 02 110BRRW Barrow Unit, Gubik Formation 02 110BSPP Bishop Point Volcanic Mudflow 02 110CHRT Chariot Gravel 02 110CRCK Crater Creek Basalt 02 110DSKN Dushkin Basalt 02 110EDRP Eider Point Basalt 02 110EGMB Edgecumbe Volcanics 02 110KNTN Kanaton Basalts 02 110LLSK Little Sitkin Dacite 02 110LPVF Little Pavlof Agglomerate 02 110MDRV Mead River Unit of Gubik Formation 02 110MEGB Mount Edgecumbe Ash Bed of Forest Creek Formation 02 110MEMS Mount Emmons Volcanics 02 110MGRG Mount Griggs Volcanics 02 110MNHG Mount Hague Volcanics 02 110NJCK New Jersey Creek Lava 02 110PCHN Pochnoi Volcanics 02 110PRPN Pratt Point Dacite Member, Little Sitkin Dacite 02 110PRSP Patterson Point Formation 02 110PVFS Pavlof Sisters Volcanics 02 110PVLF Pavlof Volcanics 02 110QRNR Quaternary System 02 110RDBL Ready Bullion Formation 02 110RDHD Round Head Basalts 02 110SGLF Sugarloaf Lava Flows 02 110SKCF Skull Cliff Unit, Gubik Formation 02 110SKNP Sitkin Point Formation 02 110TLVK Tlevak Basalt 02 110VLCB Volcano Bay Basalt Flow of Mount Hague Volcanics 02 110WRGL Wrangell Lava 02 110WSCV West Cove Member, Little Sitkin Dacite 02 111ADMS Adams Formation 02 111BERG Berg Formation 02 111BKRP Black Rapids Drift 02 111CHEN Chena Alluvium 02 111CLCK Clear Creek Drift 02 111CRQU Cirque Drift 02 111DBLP Double Point Dacite 02 111ENGR Engineer Loess 02 111FNMN Fan Mountain Drift 02 111FRBK Fairbanks Loess 02 111FRCK Forest Creek Formation 02 111FXHL Fox Hill Flow 02 111GLCB Glacier Bay Till 02 111JRVS Jarvis Ash Bed of Engineer Loess 02 111KMRV Katmai River Tuff Flow 02 111LSJM Lost Jim Lava Flow 02 111MTRD Mount Trident Andesite 02 111MUIR Muir Till 02 111OKMK Okmok Volcanics 02 111SLRV Seal River Formation 02 111TNNL Tunnel Drift 02 111TSMN Tustumena Drift 02 111WLBR Wilbur Ash Bed of Engineer Loess 02 111WRVR White River Ash Bed of Engineer Loess 02 112ADGK Adagdak Volcanics 02 112AKRK Anayaknaurak Drift 02 112AKVK Anaktuvuk River Drift 02 112ALEV Antler Valley Drift 02 112ALPM Alapah Mountain Drift 02 112ANAL Anvil Formation 02 112ANDR Andrew Volcanics 02 112ANUK Anuk Sand 02 112AVKL Anivak Lake Drift 02 112BDDM Banded Mountain Drift 02 112BERG Bering Formation 02 112BGCV Bootlegger Cove Clay 02 112BKLK Brooks Lake Drift 02 112BRLB Bristol Bay Gravel 02 112BRWN Browne Drift 02 112CBHL Caribou Hills Drift 02 112CGVN Chagvan Drift 02 112CKIL Cook Inlet Gravel 02 112CLCK Clara Creek Drift 02 112CMBL Chamberlin Drift 02 112CMLL Camille Lava Flow 02 112CPRV Copper River Gravel 02 112CRLO Carlo Till 02 112CRPL Cripple Gravel 02 112CRTR Crater Creek Basalt 02 112CTNK Chatanika Ash Bed of Goldstream Formation 02 112DELTD Delta Drift 02 112DFDB Driftwood Bay Lavas 02 112DGCK Darling Creek Drift 02 112DNLI Denali Drift 02 112DNLL Donnelly Drift 02 112DONE Dome Ash Bed of Gold Hill Loess 02 112DRCK Dry Creek Drift 02 112DSNC Dawson Cut Formation 02 112EGLK Eight Lake Drift 02 112EKLN Eklutna Drift 02 112ESTR Ester Ash Bed of Gold Hill Loess 02 112EVA Eva Formation 02 112FLCK Fluorite Creek Gravel 02 112FLXM Flaxman Formation 02 112FNTO Faneto Formation 02 112FOX Fox Gravel 02 112FRLL Farewell Drift 02 112FRPK Frosty Peak Volcanics 02 112GLDH Gold Hill Loess 02 112GLDM Goldstream Formation 02 112GRNC Granite Canyon Till 02 112GSLG Gosling Volcanics 02 112GUBK Gubik Formation 02 112HELY Healy Drift 02 112HMRV Home River Drift 02 112IKLK Itkillik Drift 02 112IMRK Imuruk Volcanics 02 112IRCK Iron Creek Drift 02 112JSHL Johnston Hill Drift 02 112KBUK Kobuk Drift 02 112KEMK Kemuk Drift 02 112KNIK Knik Drift 02 112KNKK Kanektok Gravels 02 112KOWK Kowak Clay 02 112MCRB Massacre Bay Formation 02 112MKHL Mak Hill Drift 02 112MKSN Makushin Volcanics 02 112MRZV Morzhovoi Volcanics 02 112NMRV Nome River Drift 02 112NNVK Nunivak Flows 02 112NPTN Naptowne Drift 02 112PTRS Peters Drift 02 112RLCK Riley Creek Drift 02 112SCRD Schrader Drift 02 112SLFK Slow Fork Drift 02 112SLTN Selatna Drift 02 112SMLK Salmon Lake Drift 02 112SRUK Siruk Creek Drift 02 112SVKK Sagavanirktok River Drift 02 112TANN Tanana Formation 02 112TOGK Togiak Gravels 02 112UNLK Unaluk Drift 02 112VNHR Van Horn Formation 02 112WLLR Weller Drift 02 112YKTG Yakataga Formation 02 120ADRB Andrew Bay Volcanics 02 120AGTT Agattu Beds 02 120AMCK Amchitka Formation 02 120ATTU Attu Formation 02 120BKFK Belkofski Tuff 02 120BLUG Beluga Formation 02 120BVDV Beaverhead Valley Volcanics 02 120CCKL Chickaloon Formation 02 120CDLV Cathedral Valley Agglomerate 02 120CHPN Chapin Bed 02 120CHTN Chuitna Member of Tyonek Formation 02 120CKPN Chitka Point Formation 02 120CKSK Chuniksak Formation 02 120COPR Cooper Bed of Kenai Formation 02 120CRKF Chirikof Formation 02 120CRTS Curtis Seam of Kenai Formation 02 120DKID Duke Island Ultramafic Complex 02 120FGRB Finger Bay Volcanics 02 120FRDK Frederika Formation 02 120FRPL Fairplay Syenite 02 120GKON Gakona Formation 02 120GTMN Getmuna Rhyolite Group 02 120HLKK Holokuk Basalt 02 120HMCK Hemlock Formation 02 120HRVR Hayes River Beds 02 120JSVL Jonesville Coal Group, Chickaloon Formation 02 120KENI Kenai Formation 02 120KGRKG Kougarok Gravel 02 120KGRKV Kugruk Volcanics 02 120KKHB Kiska Harbor Formation 02 120KLFP Kirilof Point Unit, Amchitka Formation 02 120KRGL Krugloi Formation 02 120MDGS Middle Ground Shoal Member, Tyonek Formation 02 120NSGK Nushagak Formation 02 120NUWK Nuwok Formation 02 120NVKV Nevidiskov Formation 02 120ORCA Orca Group 02 120PLSD Palisades Conglomerate 02 120RAT Rat Formation 02 120SNDB Sand Bay Volcanics 02 120SRLG Sterling Formation 02 120SVKK Sagavanirktok Formation 02 120TLVM Twelvemile Beds 02 120TOK Tok Sandstone 02 120TPSY Topsy Formation 02 120TYNK Tyonek Formation 02 120VGBY Vega Bay Formation 02 120WFLD West Foreland Formation 02 120ZRPN Zeto Point Basalt Porphyry 02 121ABRM Albert Rim Lavas 02 121NENN Nenana Gravel 02 121NLRY Nelroy Formation 02 121TCLN Tachilni Formation 02 121TGDK Tugidak Formation 02 121WTRB Waterboot Basalt 02 122BEVR Beaver Pluton 02 122BKFK Belkofski Tuff 02 122BRLK Bear Lake Formation 02 122CNTP Cenotaph Volcanics 02 122CPNS Captains Pluton 02 122GRBK Grubstake Formation 02 122HLCK Healy Creek Formation 02 122KTLL Katalla Formation 02 122KTZN Kootznahoo Formation 02 122LGCK Lignite Creek Formation 02 122MSHK Meshik Formation 02 122NRCP Narrow Cape Formation 02 122PFFY Puffy Member, Katalla Formation 02 122PLCK Poul Creek Formation 02 122SHLR Shaler Pluton 02 122SHMY Shemya Intrusive Complex 02 122SNCR Sanctuary Formation 02 122SNRN Suntrana Formation 02 122ULSK Unalaska Formation 02 122UNGA Unga Conglomerate Member, Bear Lake Formation 02 123ADMI Admiralty Island Volcanics 02 123BCRK Basin Creek Member, Katalla Formation 02 123BLCK Burls Creek Shale Member of Katalla Formation 02 123BNJP Banjo Point Formation 02 123BVRB Beaver Bay Group 02 123GRCV Gunners Cove Formation 02 123KLTT Kulthieth Formation 02 123KSTK Kushtaka Formation 02 123PNTH Point Hey Member, Katalla Formation 02 123RDWD Redwood Formation 02 123SKDK Sitkalidak Formation 02 123SKNK Sitkinak Formation 02 123SPCK Split Creek Sandstone Member, Katalla Formation 02 123SPVK Stepovak Formation of Beaver Bay Group 02 123TKUM Tokun Formation 02 123TSDK Tsadaka Formation 02 124ADRL Andrew Lake Formation 02 124BNDRG Boundary Granodiorite 02 124GRCK Ghost Rocks Formation 02 124HYDR Hyder Quartz Monzonite 02 124PRMR Premier Coal Group, Chickaloon Formation 02 124SHAW Shaw Coal Bed, Chickaloon Formation 02 124STLR Stillwater Formation 02 124TLST Tolstoi Formation of Beaver Bay Group 02 124WSBN Wishbone Formation 02 125CNTL Cantwell Formation 02 125DVID David Coal Bed of Chickaloon Formation 02 125EMRY Emery Coal Bed of Chickaloon Formation 02 125LLEK Little Eska Coal of Chickaloon Formation 02 125MLND Maitland Coal Bed of Chickaloon Formation 02 125MRTN Martin Coal Bed of Chickaloon Formation 02 200AMCK American Creek Granite 02 200APEX Apex Vein 02 200ASER Asses Ears Granite 02 200BDCK Boulder Creek Quartz Monzonite 02 200CDRB Cedar Bay Granite 02 200CPRM Copper Mountain Amphibolite Schist 02 200ESMY Eshamy Granite 02 200GKON Gakona Diorite 02 200GMUK Gemuk Group 02 200JDHB Judd Harbor Dunite-Peridotite 02 200LDCK Landslide Creek Granodiorite 02 200MCRS Monte Christo Diorite 02 200MDFK Middle Fork Granite 02 200SLCK Slate Creek Granodiorite 02 200WFRK West Fork Granodiorite 02 210BRCK Brine Creek Formation 02 210BRTR Brothers Volcanics 02 210GPCK Gypsum Creek Quartz Monzonite 02 210HLCV Hall Cove Peridotite 02 210HZLN Hazleton Group 02 210JULN Jualin Diorite 02 210KKKM Kuskokwim Group 02 210KLCK Klein Creek Batholith 02 210KLKN Klukwan Magnetite Pyroxenite 02 210KLTG Kaltag Formation 02 210KNPK Kane Peak Ultramafic Complex 02 210KODK Kodiak Formation 02 210MCHG Mc Hugh Complex 02 210MCRK Moonshine Creek Formation 02 210MLOZ Melozi Formation 02 210NULT Nulato Formation 02 210NZNM Natzotin Mountain Series 02 210OKPK Okpilak Granite 02 210RMZF Romanzof Granite 02 210VLDZ Valdez Group 02 211AKRG Arkose Ridge Formation 02 211AYYK Ayiyak Member, Seabee Formation 02 211BRTL Barrow Trail Member, Schrader Bluff Formation 02 211CDLR Chandler Formation 02 211CGNK Chignik Formation 02 211CLVL Colville Group 02 211CRWN Corwin Formation 02 211HOOD Hoodoo Formation 02 211IDRD Iditarod Basalt 02 211KGKK Kogosukruk Tongue, Prince Creek Formation 02 211KGYK Kaguyak Formation 02 211KKKM Kuskokwim Group 02 211MCRG Mac Coll Ridge Formation 02 211NKGN Niakogon Tongue, Chandler Formation 02 211NNLK Ninuluk Formation 02 211NNSK Nanushuk Group 02 211PCCK Prince Creek Formation 02 211RGCK Rogers Creek Member of Schrader Bluff Fm 02 211SCBF Schrader Bluff Formation 02 211SCLZ Schulze Formation 02 211SEBE Seabee Formation 02 211SLHL Sentinel Hill Member Schrader Bluff Formation 02 211SLWL Shale Wall Member, Seabee Formation 02 211SMGN Shumagin Formation 02 211TLVK Tuluvak Tongue, Prince Creek Formation 02 211UGLK Ungalik Conglomerate 02 217BDRM Biederman Argillite 02 217BKID Blashke Islands Ultramafic Complex 02 217BZCK Bonanza Creek Volcanics 02 217CHTT Chititu Formation 02 217DGID Douglas Island Volcanics 02 217FRRM Fortress Mountain Formation 02 217GLNN Glenn Shale 02 217GROD Grandstand Formation 02 217HRND Herendeen Limestone 02 217IPVK Ipevik Formation 02 217KASN Kasaan Greenstone 02 217KENN Keenan Quartzite 02 217KKPK Kukpowruk Formation 02 217KKRV Kuparuk River Sandstone 02 217KLLK Killik Tongue of Chandler Formation 02 217KMIK Kemik Sandstone Member, Okpikruak Formation 02 217KMLK Kisimilok Formation 02 217KNCT Kennicott Formation 02 217KNDK Kandik Formation 02 217KTHL Kathul Graywacke 02 217KYKK Koyukuk Group 02 217NLCN Nelchina Limestone 02 217OGRK Ogotoruk Formation 02 217OKKK Okpikruak Formation 02 217OMLK Oumalik Formation 02 217SITK Sitka Graywacke 02 217SKVC Staniukovich Formation 02 217SLTR Shelter Formation 02 217SMCL Seymour Canal Formation 02 217SPPG Stephens Passage Group 02 217TKPK Tingmerkpuk Formation 02 217TLVK Telavirak Formation 02 217TORK Torok Formation 02 217TPGK Topagoruk Formation 02 217TRDL Treadwell Formation 02 217TUKT Tuktu Formation 02 217YKTK Yakutat Group 02 220BCRK Bitter Creek Formation 02 220KHAZ Khaz Formation of Kelp Bay Group 02 220KLPB Kelp Bay Group 02 220KNGK Kingak Shale 02 220KTSN Kotsina Conglomerate 02 220ORDG Outlet Ridge Ultramafic Gabbro Complex 02 220TXCK Texas Creek Granodiorite 02 220VETA Veta Formation 02 221CHSK Chisik Conglomerate Member of Naknek Formation 02 221CNTN Chinitna Formation 02 221GVID Gravina Island Formation 02 221NKKL Naknek Lake Granite 02 221NKNK Naknek Formation 02 221NZNM Nizina Mountain Formation 02 221PMRY Pomeroy Arkose Member, Naknek Formation 02 221PVLF Paveloff Siltstone Member, Chinitna Formation 02 221RGLC Root Glacier Formation 02 221SGHB Snug Harbor Siltstone Member, Naknek Formation 02 221SLKF Shelikof Formation 02 221TONN Tonnie Siltstone Member, Chinitna Formation 02 224ALTS Aleuts Member of Kialagvik Formation 02 224BLKP Blankenship Formation 02 224BWSR Bowser Formation of Tuxedni Group 02 224CNFL Cynthia Falls Sandstone of Tuxedni Group 02 224FZCK Fitz Creek Siltstone of Tuxedni Group 02 224GIKM Gaikema Sandstone 02 224HZLN Hazelton Group 02 224KGVK Kialagvik Formation 02 224KLSH Kolosh Member, Kialagvik Formation 02 224RDGC Red Glacier Formation of Tuxedni Group 02 224THNE Thane Volcanic Group 02 224TICK Twist Creek Siltstone of Tuxedni Group 02 224TRCK Twist Creek Siltstone 02 224TRDL Tordrillo Formation 02 224TXDN Tuxedni Group 02 227BDRK Bidarka Formation 02 227BKNM Bokan Mountain Granite 02 227HRNM Horn Mountain Tuff Member, Talkeetna Formation 02 227LBCK Lubbe Creek Formation 02 227MCCR Mc Carthy Formation 02 227MRCK Marsh Creek Breccia Member, Talkeetna Formation 02 227PGCK Portage Creek Agglomerate Member, Talkeetna Formation 02 227SGRV Sag River Sandstone of Prudhoe Bay Group 02 227SKNN Skwentna Group 02 227TKLN Talkeetna Formation 02 230AMPR Amphitheatre Basalt 02 230BLCV Barlow Cove Formation 02 230GNDP Goon Dip Greenstone 02 230GSTN Gastineau Volcanic Group 02 230JACK Jack Limestone 02 230PCPK Pinnacle Peak Phyllite 02 230PRVC Perseverance Slate 02 230SBLK Shublik Formation 02 230TLRM Taylor Mountain Granodiorite 02 230UYAK Uyak Formation 02 230WRFL Waterfall Greenstone 02 230WSRP Whitestripe Marble 02 231BILD Burnt Island Conglomerate 02 231CPPK Chapin Peak Formation 02 231CRLS Cornwallis Limestone 02 231CTSN Chitistone Limestone 02 231HDID Hound Island Volcanics 02 231HMID Hamilton Island Limestone 02 231HYD Hyd Group 02 231KEKU Keku Volcanics 02 231KMSK Kamishak Formation 02 231KRCK Karen Creek Sandstone 02 231KSKL Kuskulana Formation 02 231NBSN Nabesna Limestone 02 231NHNT Nehenta Formation 02 231NIZN Nizina Limestone 02 231NKOL Nikolai Greenstone 02 237IVSK Ivishak Member, Sadlerochit Formation 02 237SDLC Sadlerochit Formation 02 300BDRK Bedrock Undifferentiated 02 300CCMN Cache Mountain Quartz Monzonite 02 300CDPG Casadepaga Schist 02 300CHSN Chisna Formation 02 300CLPK Clark Peak Schist 02 300ESTR Esther Granite 02 300KKRK Katakturuk Dolomite 02 300KLTN Klutina Group 02 300KNUT Kanuti Group 02 300KVPK Keevy Peak Formation 02 300NKOK Nikoka Group 02 300NKPK Neruokpuk Formation 02 300PPTS Puppets Formation 02 300SPBY Sheep Bay Granite 02 300WLES Wales Group 02 300WMHB William Henry Bay Marble 02 310CRCL Circle Volcanics 02 310ECHK Echooka Member, Sadlerochit Formation 02 310HCRK Hasen Creek Formation 02 310MNKM Mankomen Formation 02 310NUKA Nuka Formation 02 310NUKN Noukeen Formation 02 310PYBS Pybus Formation 02 310SCRK Station Creek Formation 02 310SKKK Siksikpuk Formation 02 310SKOL Skolai Group 02 310STEP Step Conglomerate 02 310TKND Tahkandit Limestone 02 317CNNR Cannery Formation 02 317GKGC Gulkana Glacier Formation 02 317GLDH Golden Horn Limestone Lentil, Hasen Creek Formation 02 317HLCK Halleck Formation 02 320ALPH Alapah Limestone of Lisburne Group 02 320KGRK Kogruk Formation of Lisburne Group 02 320LSBR Lisburne Group 02 320NSRK Nasorak Formation of Lisburne Group 02 320RCRK Rainy Creek Basalt 02 320RMPR Rampart Group 02 320RNBM Rainbow Mountain Sequence 02 320SGNB Saginaw Bay Formation 02 320TTLN Tetelna Volcanics 02 320TUPK Tupik Formation of Lisburne Group 02 320WCSM Wachsmuth Limestone of Lisburne Group 02 320WHOO Wahoo Limestone of Lisburne Group 02 324LDRS Ladrones Limestone 02 327KLWK Klawak Formation 02 330CCBF Calico Bluff Formation of Endicott Group 02 330CCRK Chute Creek Member of Totatlanika Schist 02 330CFCK California Creek Member, Totatlanika Schist 02 330ECMN Echo Mountain Formation 02 330ENDC Endicott Group 02 330FDLK Ford Lake Shale 02 330HFRK Hunt Fork Shale of Endicott Group 02 330IKLK Itkilyariak Formation 02 330IVGK Iviagik Formation 02 330IYKN Iyoukeen Formation 02 330KKKK Kekiktuk Conglomerate 02 330KNYT Kanayut Conglomerate of Endicott Group 02 330LVGD Livengood Chert 02 330MCCK Mystic Creek Member, Totatlanika Schist 02 330MCRK Moose Creek Member, Totatlanika Schist 02 330SPCK Sheep Creek Member, Totatlanika Schist 02 330SRLN Strelna Formation 02 330TLNK Totatlanika Schist 02 330WLSL Wellesley Formation 02 331KAYK Kayak Shale of Endicott Group 02 331PRVC Peratrovich Formation 02 337CPTP Cape Thompson Member of Nasorak Formation 02 337KPLK Kapaloak Formation 02 337NOTK Noatak Dandstone 02 337UTKK Utukok Formation 02 340BIRD Baird Group 02 340CDCV Cedar Cove Formation 02 340CLCK Cleary Creek Serpentinite 02 340ELI Eli Limestone of Baird Group 02 340FRRB Freshwater Bay Formation 02 340GMBR Gambier Bay Formation 02 340HLTN Holitna Group 02 340KLCK Kennel Creek Limestone 02 340MCCH Mc Cann Hill Chert 02 340MKDO Mikado Phyllite 02 340RTRT Retreat Group 02 340SJPI St Joseph Island Volcanics 02 340SKJT Skajit Limestone 02 340TGRH Tigaraha Schist 02 340TLVN Tolovana Limestone 02 340TNZN Tonzona Group 02 340WDCP Woodchopper Volcanics 02 341HDBY Hood Bay Formation 02 341KGRK Kugururok Formation 02 341NRVR National River Formation 02 341PRFG Port Refugio Formation 02 341STVR Stuver Member, Kanayut Conglomerate 02 341WDLG Wadeleigh Limestone 02 344AMDMB Amy Dome Metabasalt 02 344AMDMD Amy Dome Metadiorite 02 344AMDMP Amy Dome Metaperidotite 02 344BLCP Black Cap Limestone 02 344CRND Coronados Volcanics 02 344NNOK Nanook Limestone 02 344SLMR Salmontrout Limestone 02 344TKTN Takotna Formation 02 344VLNR Vallenar Formation 02 347KRHN Karheen Formation 02 347RDRV Road River Formation 02 350ANNH Anne He Pluton 02 350TTIN Tatina Group 02 351BPLR Bay of Pillars Formation 02 351HECT Heceta Limestone 02 351KUIU Kuiu Limestone 02 351PMPK Pyramid Peak Limestone 02 351RNDU Rendu Formation 02 351TIDL Tidal Formation 02 351WLGB Willoughby Limestone 02 357DSCN Descon Formation 02 361JRDG Jones Ridge Limestone 02 367FLCK Fossil Creek Volcanics 02 367HLRD Hillard Limestone 02 370SLMN Solomon Schist 02 377ADMS Adams Argillite 02 377FLCK Funnel Creek Limestone 02 400FRML Fortymile Granite 02 400HRRH Hurrah Slate 02 400KGLK Kigluaik Group 02 400NOME Nome Group 02 400PKMM Puckmummie Schist 02 400PLLY Pelly Gneiss 02 400TNDR Tindir Group 02 BASEMENT Basement 02 BEDROCK Bedrock 04 100VLFL Valley Fill 04 104LCMV Locomotive Fanglomerate, Mid-Cenozoic 04 104SLMK Silmurk Formation, Mid-Cenozoic 04 110ALVM Quaternary Alluvium 04 110QRNR Quaternary System 04 110VLFL Valley Fill 04 111ALVM Holocene Alluvium 04 111HLCN Holocene Series 04 111LKBP Lakebeds and Playa Deposits 04 112ALVMO Alluvium, Older 04 112BLCF Basaltic Flows 04 112BSFL Basin Fill, Upper and Lower, Undifferentiated 04 112BSFLU Basin Fill, Upper 04 112FOLL Fort Lowell Formation, Pleistocene 04 112GLCC Glacial Colluvium 04 112PLSC Pleistocene Series 04 112SDGVU Sand and Gravel, Upper 04 112TERC Terrace (and Surficial) Deposits 04 120CDSM Consolidated Sedimentary Rocks, Tertiary and Mesozoic Undifferentiated 04 120DTIL Datil Formation 04 120FCVC Felsic Volcanic Rocks 04 120IRSV Intrusive Rocks 04 120MFCV Mafic Volcanic Rocks 04 120MFFV Mafic and Felsic Volcanic Rocks 04 120SDMR Sedimentary Rocks 04 120TNJA Tinaja Beds, Undifferentiated Tertiary (Pliocene-Miocene) 04 120TNJAU Tinaja Beds, Upper Tertiary (Pliocene-Miocene) 04 120VLCC Volcanic Rocks 04 121BDHC Bidahochi Formation 04 121BDHCL Bidahochi Formation, Lower 04 121BDHCM Bidahochi Formation, Middle 04 121BDHCU Bidahochi Formation, Upper 04 121BLCF Basaltic Flows 04 121BOUS Bouse Formation, Pliocene 04 121BSFLL Basin Fill, Lower 04 121CHSK Chuska Sandstone 04 121LBFM Lower Basin Fill and Miocene Sedimentary Rocks, Undifferentiated 04 121MDCK Muddy Creek Formation 04 121VERD Verde Formation 04 122ARLR Artillery Formation, Miocene 04 122BLAD Basalt-Andisite Flows 04 122BOUS Bouse Formation, Miocene 04 122CPWS Chapin Wash Formation 04 122HSPG Horse Spring, Miocene 04 122HULP Hualapai Limestone 04 122PNTN Pantano Formation, Miocene 04 122SDMR Sedimentary Rocks 04 122TNJAL Tinaja Beds, Lower Miocene 04 122VBAT Volcanic Breccias, Agglomerates or Tuffs 04 122VLCC Volcanic Rocks 04 123FFWT Felsic Flows or Welded Tuffs 04 123HSPG Horse Spring, Oligocene 04 123KDMR Sedimentary Rocks 04 123MFCF Mafic Flows 04 123PNTN Pantano Formation, Oligocene 04 123VBAT Volcanic Breccias, Agglomerates or Tuffs 04 123VLCC Volcanic Rocks 04 124FCVC Felsic Volcanic Rocks 04 124MFCV Mafic Volcanic Rocks 04 124SDMR Sedimentary Rocks 04 125NCMN Nacimiento Formation 04 125OJAM Ojo Alamo Sandstone 04 200FCIV Felsic Intrusive Rocks 04 200FCVC Felsic Volcanic Rocks 04 200MFCV Mafic Volcanic Rocks 04 200MFIV Mafic Intrusive Rocks 04 200SDMR Sedimentary Rocks 04 200VLCC Volcanic Rocks 04 211ALSN Allison Member of Menefee Formation of Mesaverde Group 04 211BARB Bartlett Barren Member of Crevasse Canyon Formation of Mesaverde Group 04 211CLFH Cliff House Sandstone of Mesaverde Group 04 211CLRY Cleary Coal Member of Menefee Formation of Mesaverde Group 04 211CRVC Crevasse Canyon Formation of Mesaverde Group 04 211DAKTS Dakota Sandstone 04 211DLCO Dilco Coal Member of Crevasse Canyon Formation of Mesaverde Group 04 211DLTN Dalton Sandstone Member of Crevasse Canyon Formation of Mesaverde Grp 04 211FRLD Fruitland Formation 04 211FRMG Farmington Sandstone Member of Kirtland Shale 04 211GLLP Gallup Sandstone 04 211HOST Hosta Tongue of Point Lookout Sandstone of Mesaverde Group 04 211JLPZ Juana Lopez Member of Mancos Shale 04 211KRLDU Kirtland Shale, Upper Shale Member 04 211LWIS Lewis Shale 04 211MENF Menefee Formation 04 211MLTT Mulatto Tongue of Mancos Shale 04 211MNCS Mancos Shale 04 211PCCF Pictured Cliffs Sandstone 04 211PNLK Point Lookout Sandstone 04 211PSCD Pescado Tongue of Mancos Shale 04 211SATN Satan Tongue of Mancos Shale 04 211SDMR Sedimentary Rocks, Undifferentiated 04 211TORV Toreva Formation 04 211WEPO Wepo Formation 04 211YLPN Yale Point Sandstone 04 217BRCN Burro Canyon Formation 04 220NAVJ Navajo Sandstone 04 221BLFF Bluff Sandstone 04 221BRSB Brushy Basin Shale Member of Morrison Formation 04 221CAML Carmel Formation 04 221CSPG Cow Springs Sandstone 04 221ENRD Entrada Sandstone 04 221ENRDL Entrada Sandstone, Lower 04 221ENRDM Entrada Sandstone, Middle 04 221ENRDU Entrada Sandstone, Upper 04 221MRSN Morrison Formation 04 221RCPR Recapture Shale Member of Morrison Formation 04 221SLWS Salt Wash Sandstone Member of Morrison Formation 04 221SUMV Summerville Formation 04 221TODL Todilto Limestone 04 221WSRC Westwater Canyon Sandstone Member of Morrison Formation 04 230HSKN Hoskinnini Member of Moenkopi Formation 04 230MNKP Moenkopi Formation 04 231CCRK Church Rock Member of Chinle Formation 04 231CHNL Chinle Formation 04 231CORO Correo Sandstone Bed of Petrified Forest Member of Chinle Formation 04 231CSPG Crane Spring Formation 04 231DSRC Dinosaur Canyon Sandstone Member of Moenave Formation 04 231KYNT Kayenta Formation 04 231LKCK Lukachukai Member of Wingate Sandstone 04 231MNRB Monitor Butte Member of Chinle Formation 04 231MOEV Moenave Formation 04 231MRDD Mesa Redondo Member of Chinle Formation 04 231ORCK Owl Rock Member of Chinle Formation 04 231PEFF Petrified Forest Member, Undifferentiated, of Chinle Formation 04 231PFDFL Petrified Forest Member, Lower, of Chinle Formation 04 231PFDFU Petrified Forest Member, Upper, of Chinle Formation 04 231RCKP Rock Point Member of Wingate Sandstone 04 231SNSL Sonsela Sandstone Bed of Petrified Forest Member of Chinle Formation 04 231SPGD Springdale Sandstone Member of Moenave Formation 04 231SRMP Shinarump Member of Chinle Formation 04 231WNGT Wingate Sandstone 04 234HLBK Holbrook Sandstone Member of Moenkopi Formation 04 237MOQU Moqui Member of Moenkopi Formation 04 237WPTK Wupatki Member of Moenkopi Formation 04 300LMSN Limestone 04 300QRTZ Quartzite 04 300SNDS Sandstone 04 310ABO Abo Formation 04 310CDRM Cedar Mesa Sandstone Member of Cutler Formation 04 310CLVL Callville Limestone (Permian-Pennsylvanian-Mississippian) 04 310COCN Coconino Sandstone 04 310CTLR Cutler Formation 04 310DECL De Chelly Sandstone 04 310GLRT Glorieta Sandstone 04 310HLGT Halgaito Tongue of Cutler Formation 04 310HRMT Hermit Shale 04 310KIBB Kaibab Limestone 04 310NACO Naco Formation 04 310OARK Organ Rock Tongue of Cutler Formation 04 310PKON Pakoon Limestone 04 310RICO Rico Formation 04 310SCBH Schnebly Hill Formation 04 310SUPI Supai Formation 04 310SUPIL Supai Formation, Lower 04 310SUPIM Supai Formation, Middle 04 310SUPIU Supai Formation, Upper 04 310TRWP Toroweap Formation 04 313SADR San Andres Limestone 04 317QNTP Queantoweap Sandstone 04 319EPLD Esplanade Sandstone 04 320HRMS Hermosa Formation 04 320MOLS Molas Formation 04 327SRPC Suprise Canyon Formation 04 330RDLL Redwall Limestone 04 340TMPB Temple Butte Limestone, of Devonian Age 04 341MRTN Martin Limestone 04 374BGAG Bright Angel Shale 04 374MUAV Muav Limestone 04 374TPTS Tapeats Sandstone 04 400GRCG Granitic Gneiss 04 400GRNT Precambrian Granite 04 400SCST Schist 04 400SDMR Precambrian Sedimentary Rocks 04 BASEMENT Basement 04 BEDROCK Bedrock 05 100CNZC Cenozoic Erathem 05 100RGLT Regolith 05 110ALVM Quaternary Alluvium 05 110QRNR Quaternary System 05 110TRRC Terrace Deposits 05 111ALVM Holocene Alluvium 05 111HLCN Holocene Series 05 111TRRC Terrace Deposits 05 112ALVM Alluvium 05 112MRVAA Mississippi River Valley Alluvial Aquifers 05 112PLSC Pleistocene Series 05 112PRARC Pleistocene Prairie Complex 05 112TRRC Terrace Deposits 05 112VLTR Valley Trains, Pleistocene 05 120TRTR Tertiary System 05 121PLCN Pliocene Series 05 12405MP 500-foot Sand (Memphis Aquifer) 05 12414WX 1400-foot Sand (Lower Wilcox Aquifer) 05 124CCKF Cockfield Formation of Claiborne Group 05 124CKMN Cook Mountain Formation 05 124CLBR Claiborne Group 05 124CRRZ Carrizo Sand 05 124CRVR Cane River Formation 05 124EOCN Eocene Series 05 124JCKS Jackson Group 05 124RDFD Redfield Formation 05 124SPRT Sparta Sand 05 124WBLF White Bluff Formation 05 124WLCXG Wilcox Group 05 125CLTN Clayton Formation 05 125MDWY Midway Group 05 125PLCN Paleocene Series 05 125PRCK Porters Creek Clay 05 200MSZC Mesozoic Erathem 05 210CRCS Cretaceous System 05 211AKDP Arkadelphia Marl 05 211ANNN Annona Chalk 05 211CRCSU Upper Cretaceous Series 05 211MLBK Marlbrook Marl 05 211NCTC Nacatoch Sand 05 211NPLS Nepheline Syenite 05 211SRTG Saratoga Chalk 05 212BRNS Brownstown Marl 05 212OZAN Ozan Formation 05 212TOKO Tokio Formation 05 212WDBN Woodbine Formation 05 217CRCSL Lower Cretaceous Series 05 217DLGT Delight Sand 05 217DQUN De Queen Limestone 05 217DRKS Dierks Limestone 05 217PIKE Pike Gravel 05 217ULMT Ultima Thule Gravel Member of Holly Creek Formation 05 218GDLD Goodland Limestone 05 218HLCK Holly Creek Formation 05 218PLXY Paluxy Sand 05 218TRNT Trinity Group 05 220JRSC Jurassic System 05 300PLZC Paleozoic Erathem 05 320PSLV Pennsylvanian System 05 325BGGY Boggy Shale 05 325DSMS Des Moinesian Series 05 325HRSR Hartshorne Sandstone 05 325MCAL McAlester Shale 05 325SVNN Savanna Sandstone 05 326ATKN Atokan Series 05 326ATOK Atoka Formation 05 328BLYD Bloyd Shale 05 328BRTD Brentwood Limestone Member of Bloyd Shale 05 328CNHL Cane Hill Member of Hale Formation 05 328HALE Hale Formation 05 328JKFK Jackfork Sandstone 05 328JSVL Johns Valley Shale 05 328KSLR Kessler Limestone Member of Bloyd Shale 05 328MRRN Morrowan Series 05 328PRGV Prairie Grove Member of Hale Formation 05 328WLSY Woolsey Sandstone Member of Bloyd Shale 05 330ARKS Arkansas Novaculite 05 330BOON Boone Formation 05 330CTNG Chattanooga Shale 05 330HNTF Hatton Tuff Lentil of Stanley Shale 05 330HSPG Hot Springs Sandstone 05 330MSSP Mississippian System 05 330STNL Stanley Shale 05 331BSVL Batesville Sandstone 05 331HDVL Hindsville Limestone 05 331MFLD Moorefield Formation 05 331MSSPU Mississippian, Upper 05 331PTKN Pitkin Limestone 05 331RDDL Ruddell Shale 05 331WDNG Wedington Sandstone Member of Fayetteville Shale 05 332FTVL Fayetteville Shale 05 337MSSPL Mississippian, Lower 05 337STJO St Joe Limestone Member of Boone Formation 05 340DVNN Devonian System 05 341DVNNU Devonian, Upper 05 341SYMR Sylamore Sandstone Member of Chattanooga Shale 05 344CLFT Clifty Limestone 05 344DVNNM Devonian, Middle 05 347DVNNL Devonian, Lower 05 347PNRS Penters Chert 05 350BLCK Blaylock Sandstone 05 350MSRM Missouri Mountain Slate 05 350SCLR St Clair Limestone 05 350SLRN Silurian System 05 357BFLD Brassfield Limestone 05 357LFRT Lafferty Limestone 05 357SLRNL Silurian, Lower 05 360ODVC Ordovician System 05 361CSON Cason Shale 05 361FRVL Fernvale Limestone 05 361ODVCU Ordovician, Upper 05 361PKCK Polk Creek Shale 05 364BGFK Bigfork Chert 05 364EVRN Everton Formation 05 364JCHM Joachim Dolomite 05 364KMCK Kimmswick Limestone 05 364ODVCM Ordovician, Middle 05 364PLTN Plattin Limestone 05 364STPR St Peter Sandstone 05 367BKRK Black Rock Formation 05 367BLKL Blakely Sandstone 05 367CRLM Crystal Mountain Sandstone 05 367CTTR Cotter Dolomite 05 367GSCD Gasconade Dolomite 05 367GUNR Gunter Sandstone Member of Van Buren Formation 05 367MZRN Mazarn Shale 05 367ODVCL Ordovician, Lower 05 367RBDX Roubidoux Formation 05 367SMVL Smithville Formation 05 367VNBR Van Buren Formation 05 367WMBL Womble Shale 05 368JFRC Jefferson City Dolomite 05 368PWLL Powell Dolomite 05 370CLLR Collier Shale 05 370CMBR Cambrian System 05 371BNTR Bonneterre Dolomite 05 371CMBRU Cambrian, Upper 05 371DRBD Derby-Doerun Formations 05 371DVIS Davis Formation 05 371ELVS Elvins Group 05 371EMNC Eminence Dolomite 05 371LMTT Lamotte Sandstone 05 371POTS Potosi Dolomite 05 400IGNS Precambrian Igneous Rocks 05 400PCMB Precambrian Erathem 05 BASEMENT Basement 05 BEDROCK Bedrock 06 100CLDD Consolidated Rocks 06 100CNTL Cenezoic continental deposit 06 100CNZC Cenozoic Erathem 06 100MRIN Cenezoic marine deposits 06 100SCMV Sacramento Valley Aquifer 06 100VLFL Valley-Fill Deposits 06 110A A-Clay 06 110ALVF Alluvial Fan Deposits 06 110ALVM Quaternary Alluvium 06 110MRIN Quaternary marine deposits 06 110QRNR Quaternary System 06 110VLFL Valley Fill 06 1110008 80-foot Gravel 06 111A A-Clay 06 111ALCR Alluvium of the Coast Range (Pliocene-Holocene) 06 111ALCRY Alluvium of the Coast Range, Younger (Pleistocene-Holocene) 06 111ALVF Alluvial Fan Deposits 06 111ALVM Holocene Alluvium 06 111ALVMO Alluvium, Older 06 111ALVMY Alluvium, Younger 06 111ATSE Alluvium of the Tehachapi and San Emigdio Mountains 06 111ATSEY Alluvium of the Tehachapi and San Emigdio Mts, Younger (Plei-Holo) 06 111AVSN Alluvium of the Sierra Nevada 06 111AVSNY Alluvium of the Sierra Nevada, Younger (Pleistocene-Holocene) 06 111B B-Clay (Holocene-Pleistocene) 06 111BTVL Butte Valley Basalt 06 111CLVM Colluvium 06 111CNTL Holocene continental deposits 06 111CSTL Coastal Deposits 06 111D D-Clay (Holocene-Pleistocene) 06 111DUNE Dune Sand 06 111FLDB Flood-Basin Deposits 06 111FVGC Fluvioglacial Deposits 06 111GSPR Gaspur Water-Bearing Zone 06 111HCPC Holocene-Pleistocene Series 06 111HLCN Holocene Series 06 111LCRM Lacustrine and Marsh Deposits (Holocene-Pliocene) 06 111LDLD Landslide Deposits 06 111LKBP Lakebeds and Playa Deposits 06 111MJRV Mojave River Channel Deposits 06 111MRNL Morainal Deposits 06 111PLAY Playa Deposits 06 111PLCV Plutos Cave Basalt 06 111RSDM Residuum 06 111RVCL River Channel Deposits 06 111RVTC River Terrace Deposits 06 111SDLK Sand, Lakeshore Deposits 06 111SLPN Salt Pan 06 111TLBR Talbert Water-Bearing Zone 06 111TRRC Terrace Deposits 06 111VHGC Volcanic Rocks of High Cascades 06 111WSKN Whiskeytown Unconsolidated Deposits 06 112ALABE Alluvium Above and Below E-Clay (Miocene-Pleistocene) 06 112ALAEC Alluvium Above E-Clay 06 112ALBEC Alluvium Below E-Clay (Miocene-Pleistocene) 06 112ALVFO Alluvial-Fan Deposits, Older 06 112ALVM Alluvium 06 112ALVMO Alluvium, Older 06 112ARMS Aromas Red Sand 06 112ARSC Arroyo Seco Gravel 06 112BCKK Blackhawk Breccia 06 112BSFL Basin Fill, Upper and Lower, Undifferentiated 06 112BSHP Bishop Tuff 06 112BSLT Basalt 06 112BTTR Battery Formation 06 112C C-Clay 06 112CASS Cass Formation (Pleistocene-Pliocene) 06 112CBZN Cabazon Fanglomerate 06 112CCHE Cache Formation 06 112CNTC Continental Terrace Deposits - Pleistocene 06 112CONL Continental Deposits (Pleistocene-Pliocene) 06 112CRCR Corcoran Clay Member of Tulare Formation 06 112CRLT Carlotta Formation 06 112CSTS Casitas Formation 06 112DPSP Dripping Springs Formation 06 112ECC E-Clay or Corcoran Clay Member of Tulare Formation 06 112F F-Clay (Pleistocene-Pliocene) 06 112FROK Fair Oaks Formation 06 112GLEL Glen Ellen Formation 06 112HCHC Huichica Formation 06 112HKTN Hookton Formation 06 112LAKE Lake Deposits 06 112LCSRO Lacustrine Deposits, Older 06 112LHBR La Habra Formation 06 112LKSRO Lakeshore Deposits, Older 06 112LVRM Livermore Gravel 06 112MDST Modesto Formation - Pleistocene 06 112MLRN Millerton Formation 06 112MNZM Montezuma Formation 06 112MRCD Merced Formation 06 112MRTC Marine Terrace Deposits 06 112MXLK Manix Lake Beds 06 112ORCT Orcutt Formation 06 112PALA Pala Conglomerate 06 112PAUB Pauba Formation 06 112PCKD Packwood Gravel 06 112PCPC Pleistocene-Pliocene Series 06 112PLSC Pleistocene Series 06 112PLVD Palos Verdes Sand 06 112PRBL Paso Robles Formation 06 112PUMC Pumice Cones (Pleistocene-Pliocene) 06 112RVBK Riverbank Formation - Pleistocene 06 112SBRB Santa Barbara Formation 06 112SCLR Santa Clara Formation 06 112SDDSO Sand Dune Deposits, Older 06 112SDMS San Dimas Formation 06 112SLIN Saline Deposits 06 112SLVD Silverado Water-Bearing Zone 06 112SNBN San Benito Gravels 06 112SPDR San Pedro Formation 06 112SUGS Saugus Formation 06 112TKLK Turlock Lake Formation - Pleistocene 06 112TMCL Temecula Arkose 06 112TMSP Timms Point Silt 06 112TUCRL Tulare Formation, Lower 06 112TUCRU Tulare Formation, Upper 06 112TULA Tulare Formation 06 112VCTR Victor Formation 06 112VLCC Volcanic Rocks 06 120CNTL Continental Rocks 06 120MRIN Marine Deposits 06 120SDMR Sedimentary Rocks 06 120SVCC Sedimentary Rocks of Volcanic Origin 06 120TRTR Tertiary System 06 120VCWC Volcanic Rocks, Western Cascades 06 120VLCC Volcanic Rocks 06 121AVRD Anaverde Formation 06 121BOUS Bouse Formation, Pliocene 06 121BSFLL Basin Fill, Lower 06 121CHNC Chanac Formation 06 121CREG Careaga Formation 06 121DURT Duarte Conglomerate 06 121ECGN Etchegoin Formation 06 121FOXN Foxen Mudstone 06 121FRND Fernando Formation 06 121HGVL Hungry Valley Formation 06 121KRRV Kern River Formation 06 121LAKE Lake Deposits 06 121LBFM Lower Basin Fill and Miocene Sedimentary Rocks, Undifferentiated 06 121LGUN Laguna Formation 06 121LSMD Los Medanos Formation 06 121LWLR Lawlor Tuff 06 121MCOG Miocene-Oligocene Series 06 121MLLD Mulholland Formation 06 121MRTN Merten Formation (Pliocene-Miocene) 06 121NGUL Niguel Formation 06 121NMLK Nomlaki Tuff Member of Tehama and Tuscan Formations 06 121ORND Orinda Formation 06 121PCMC Pliocene-Miocene Series 06 121PICOU Pico Formation, Upper 06 121PLCN Pliocene Series 06 121PNOL Pinole Tuff 06 121PRSM Purisima Formation 06 121PRSML Purisima Formation, Lower Member 06 121PRSMM Purisima Formation, Middle Member 06 121PRSMU Purisima Formation, Upper Member 06 121PTLM Petaluma Formation - Pliocene 06 121PUCB Punchbowl Formation (Pliocene-Miocene) 06 121RCRD Ricardo Formation (Pliocene-Miocene) 06 121SBVC Sutter Buttes Volcanic Rocks 06 121SCRZ Santa Cruz Mudstone 06 121SGRG St George Formation 06 121SNDS Sandstone, Unnamed 06 121SNJQ San Joaquin Formation 06 121SNMT San Mateo Formation 06 121SNTM San Timoteo Beds 06 121SONM Sonoma Volcanics 06 121SSQC Sisquoc Formation 06 121TEHM Tehama Formation 06 121TSCN Tuscan Formation 06 122BENA Bena Gravel 06 122BOUS Bouse Formation, Miocene 06 122BPST Bopesta Formation 06 122BRNS Briones Sandstone 06 122CLRM Claremont Shale 06 122CNTL Continental Deposits 06 122CPSR Capistrano Formation 06 122CRBO Cierbo Sandstone 06 122EMDN El Modena Volcanics 06 122ESCD Escudo Sandstone 06 122FISS Fiss Fanglomerate 06 122FRMJ Freeman Silt-Jewett Sand 06 122GMHL Gem Hill Formation 06 122HMBR Hambre Formation 06 122ILMN Ilmon Basalt 06 122LMPC Lompico Sandstone 06 122LVID La Vida Member of Puenta Formation 06 122MCOG Miocene-Oligocene Series 06 122MGNS Meganos Formation 06 122MNTR Monterey Shale 06 122MOCN Miocene Series 06 122MODL Modelo Formation 06 122NRLY Neroly Formation 06 122OLCS Olcese Sand 06 122ORSN Oursan Formation 06 122PGML Page Mill Basalt 06 122PLTO Pleito Formation 06 122PMDH Pyramid Hill Sand Member of Jewett Sand 06 122PNCR Pancho Rico Formation - Miocene 06 122POTT Potato Sandstone of Vaughn 06 122PUNT Puente Formation 06 122QNSB Quien Sabe Volcanics 06 122RFRG Reef Ridge Shale 06 122RNDM Round Mountain Silt 06 122RODO Rodeo Shale 06 122SBRN Sobrante Sandstone 06 122SCMC Sycamore Canyon Member of Puente Formation 06 122SDMR Sedimentary Rocks 06 122SESP Sespe Formation 06 122SMLR Simmler Formation 06 122SMRG Santa Margarita Formation 06 122SNRM San Ramon Sandstone 06 122SOFR San Onofre Breccia 06 122SPBL San Pablo Group 06 122SQUL Soquel Member of Puente Formation 06 122TICE Tice Formation 06 122TMBL Temblor Formation 06 122TPNG Topanga Formation 06 122TRPC Tropico Group 06 122VDDR Vedder Sands 06 122VLCC Volcanic Rocks 06 122VQRS Vaqueros Formation or Sandstone 06 122VSPG Valley Springs Formation 06 122VSQZ Vasquez Formation (Miocene-Oligocene) 06 122YORB Yorba Member of Puente Formation 06 122ZYNT Zayante Sandstone 06 123IGLS Ingalls Formation 06 123KRKR Kirker Tuff 06 123KRNG Kreyenhagen Shale or Formation 06 123OGCE Oligocene-Eocene Series 06 123OLGC Oligocene Series 06 123PNCT Pinecate Formation 06 123RDCK Reeds Creek Andesite 06 123SJBS San Juan Bautista Formation 06 123SLRZ San Lorenzo Formation 06 123TSCN Titus Canyon Formation 06 123TUMY Tumey Formation 06 123WLND Wheatland Formation 06 123WVVL Weaverville Formation 06 124AVNL Avenal Sandstone 06 124BUTN Butano Sandstone 06 124CAPY Capay Shale 06 124CZDL Cozy Dell Formation 06 124DMNG Domengine Sandstone 06 124ECPC Eocene-Paleocene Series 06 124EOCN Eocene Series 06 124FRCC Franciscan Complex - Ecoene, Cretaceous, Jurassic 06 124INDR Indart Sandstone 06 124IONE Ione Formation 06 124JOLL La Jolla Formation 06 124LGSC Laguna Seca Formation 06 124LMBR Lambert Shale 06 124LODO Lodo Formation 06 124MGCK Montgomery Creek Formation 06 124MNDG Mindego Basalt 06 124MRKL Markley Formation 06 124NRVL Nortonville Shale 06 124POWY Poway Group 06 124SNTG Santiago Formation 06 124TESL Tesla Formation 06 124TJON Tejon Formation 06 124TLMN Tolman Formation 06 124TRCK The Rocks Sandstone 06 124UMPQ Umpqua Formation 06 124YKUT Yokut Sandstone 06 125GOLX Golex Formation 06 125LCTL Locatelli Formation 06 125MRNZ Martinez Formation 06 125PLCN Paleocene Series 06 125SLVD Silverado Formation 06 200BMCX Basement Complex of Pretertiary Age 06 200MLMN Mule Mountain Granite 06 200MSZC Mesozoic Erathem 06 210BRRS Berryessa Shale 06 210CCJC Cretaceous-Jurassic Systems 06 210CHCO Chico Formation 06 210CLDD Consolidated Cretaceous Rocks Undivided 06 210CRCS Cretaceous System 06 210LKVM Lakeview Mountain Tonalite 06 210SCVG Scott Valley Granodiorite 06 210SMRC San Marcos Gabbro 06 210TRBC Trabuco Formation 06 210WDSM Woodson Mountain Granodiorite 06 211CHCO Chico Formation 06 211CRCSU Upper Cretaceous Series 06 211DLVL Del Valle Formation 06 211DRVL Deer Valley Sandstone 06 211JQRG Joaquin Ridge Sandstone Member of Panoche Formation 06 211MRGD Moreno Grande Formation 06 211MRLF Marliff Shale 06 211OKLD Oakland Conglomerate 06 211PGNP Pigeon Point Formation 06 211PNCH Panoche Formation 06 217CRCSL Lower Cretaceous Series 06 217HRSN Horsetown Formation 06 217NLSC Niles Canyon Formation 06 217ONO Ono Formation 06 217RCTR Rector Formation 06 217SHST Shasta Series 06 217SPUF Serpentine and Ultramafic Rock Undivided 06 217SRPN Serpentine 06 217WSNR Wisenor Formation 06 220BDFC Bedford Canyon Formation 06 220JRSC Jurassic System 06 220SSBL Shasta Bally Quartz Diorite 06 221JRSCD Upper-Middle Jurassic Series 06 221JRSCU Upper Jurassic Series 06 221MRPS Mariposa Formation 06 221SVSP Scott Valley Serpentine 06 224JRSCM Middle Jurassic Series 06 227JRSCL Lower Jurassic Series 06 230TRSC Triassic System 06 300ABRM Abrams Mica Schist 06 300CLVR Calaveras Group 06 300CRBN Carbonate Rocks 06 300MMPC Metamorphic Rocks 06 300PLZC Paleozoic Erathem 06 300SLMN Salmon Hornblende Schist 06 310PRMN Permian System 06 320PSLV Pennsylvanian System 06 330BRGD Bragdon Formation 06 330MSSP Mississippian System 06 340CCLL Chanchelulla Formation 06 340CPLY Copley Greenstone 06 340DVNN Devonian System 06 340SCVG Scott Valley Greenstone 06 341DVNNU Devonian, Upper 06 344BLKL Balaklala Rhyolite 06 344DVNNM Devonian, Middle 06 400PCMB Precambrian Erathem 06 BASEMENT Basement 06 BEDROCK Bedrock 08 100CNZC Cenozoic Erathem 08 100CZMZ Cenozoic-Mesozoic Erathems 08 110QRNR Quaternary System 08 111ALFP Alluvium, Flood Plain 08 111ALVM Holocene Alluvium 08 111AVMT Alluvium and Terrace Deposits 08 111DUNE Dune Sand 08 111HLCN Holocene Series 08 111VLFL Valley-Fill Deposits 08 112ALMS Alamosa Formation 08 112GLCL Glacial Deposits 08 112SANF Santa Fe Formation 08 112TERC Terrace Deposits 08 120TRCC Tertiary-Cretaceous Systems 08 120TRTR Tertiary System 08 120VLCC Volcanic Rocks 08 121DRUN Dry Union Formation 08 121NRPK North Park Formation 08 121OGLL Ogallala Formation 08 121PCMC Pliocene-Miocene Series 08 121PLCN Pliocene Series 08 121SNTF Santa Fe Formation 08 122ARKR Arikaree Formation 08 122BRPK Browns Park Formation 08 122MOCN Miocene Series 08 123BRUL Brule Formation of White River Group 08 123CDRN Chadron Formation of White River Group 08 123CLRK Castle Rock Conglomerate 08 123OLGC Oligocene Series 08 123WRVR White River Formation 08 124CCHR Cuchara Formation 08 124CLMN Coalmont Formation 08 124DVLH Devils Hole Formation 08 124DWSN Dawson Arkose 08 124ECPC Eocene-Paleocene Series 08 124EOCN Eocene Series 08 124FRST Farasita Conglomerate 08 124GRRV Green River Formation 08 124HRFN Huerfano Formation 08 124IRSV Intrusive Rocks 08 124SJNM San Jose and Nacimiento Formations, Undifferentiated (Eocene-Paleocen 08 124SNJS San Jose Formation 08 124WSTC Wasatch Formation 08 125ANMS Animas Formation (Paleocene-Upper Cretaceous) 08 125DNVR Denver Formation 08 125FRUN Fort Union Formation 08 125KRLD Kirtland Shale 08 125MDPK Middle Park Formation 08 125NCMN Nacimiento Formation 08 125OJAM Ojo Alamo Sandstone 08 125PLCN Paleocene Series 08 125PSNC Poison Canyon Formation 08 125RTON Raton Formation 08 200MSZC Mesozoic Erathem 08 200MZPZ Mesozoic-Paleozoic Erathems 08 210CRCS Cretaceous System 08 210DKOT Dakota Sandstone or Formation or Group 08 211A A Sandstone Member of Laramie Formation 08 211ARPH Arapahoe Conglomerate Member of Laramie Formation 08 211BGCK Bridge Creek Limestone Member of Greenhorn Limestone 08 211BLHL Blue Hill Shale Member of Carlile Shale 08 211BLRM B Sandstone Member of Larrimie Formation 08 211BNTN Benton Shale 08 211CDLL Codell Sandstone Member of Carlile Shale 08 211CLFH Cliff House Sandstone of Mesaverde Group 08 211CRCSU Upper Cretaceous Series 08 211CRLL Carlile Shale 08 211FRHS Fort Hays Limestone Member of Niobrara Formation 08 211FRLD Fruitland Formation 08 211FROR Frontier Sandstone 08 211FRPR Fairport Chalky Shale Member of Carlile Shale 08 211FXHL Fox Hills Formation 08 211GRNR Greenhorn Formation 08 211GRRS Graneros Shale 08 211HRLD Hartland Shale Member of Greenhorn Limestone 08 211HYGN Hygiene Sandstone Member of Pierre Shale 08 211ILES Iles Formation 08 211LFXH Laramie - Fox Hills Aquifer 08 211LNCE Lance Formation 08 211LNCL Lincoln Member of Greenhorn Limestone 08 211LRMI Laramie Formation 08 211LRMR Larimer Sandstone Member of Pierre Shale 08 211LWIS Lewis Shale 08 211MCDM Mcdermott Member of Animas Formation 08 211MENE Menefee Formation of Mesaverde Group 08 211MLKN Milliken Sandstone Member of Fox Hills Sandstone 08 211MNCS Mancos Shale 08 211MVRD Mesaverde Group 08 211NBRR Niobrara Formation 08 211PCCF Pictured Cliffs Sandstone 08 211PIRR Pierre Shale 08 211POLK Point Lookout Sandstone Member of Mesaverde Group 08 211RCRD Richard Sandstone Member of Pierre Shale 08 211RKRG Rocky Ridge Sandstone Member of Pierre Shale 08 211SOKHN Smoky Hill Marl Member of Niobrara Formation 08 211TRDD Trinidad Sandstone 08 211TRNS Transition Zone 08 211TRRY Terry Sandstone Member of Pierre Shale 08 211VRMJ Vermejo Formation 08 217BRCN Burro Canyon Formation 08 217CRCSL Lower Cretaceous Series 08 217CYNN Cheyenne Sandstone Member of Purgatorie Formation 08 217KIOW Kiowa Shale 08 217LYTL Lytle Formation of Dakota Group 08 217MWRY Mowry Shale 08 217PLNV Plainview Sandstone Member of South Platte Formation 08 217PRGR Purgatoire Formation 08 217STPL South Platte Formation of Dakota Group 08 220GLNC Glen Canyon Group 08 220JCTC Jurassic-Triassic Systems 08 220JRSC Jurassic System 08 220NVJO Navajo Sandstone of Glen Canyon Group 08 221BRSB Brushy Basin Shale Member of Morrison Formation 08 221CRTS Curtis Formation of San Rafael Group 08 221ENRD Entrada Sandstone 08 221JCCK Junction Creek Sandstone of San Rafael Group 08 221JRSCU Upper Jurassic Series 08 221MOAB Moab Member of Entrada Sandstone 08 221MRSN Morrison Formation 08 221RCPR Recapture Shale Member of Morrison Formation 08 221RLCK Ralston Creek Formation 08 221SKRK Slick Rock Member of Entrada Sandstone 08 221SLWS Salt Wash Sandstone Member of Morrison Formation 08 221SMVL Summerville Formation of San Rafael Group 08 221SRFL San Rafael Group 08 221WSRC Westwater Canyon Sandstone Member of Morrison Formation 08 224JRSCM Middle Jurassic Series 08 227JRSCL Lower Jurassic Series 08 230LKNS Lykins Formation 08 230TCPM Triassic-Permian Systems 08 230TRSC Triassic System 08 231CINL Chinle Formation of Dockum Group 08 231DCKM Dockum Group 08 231JELM Jelm Formation 08 231KAYN Kayenta Formation of Glen Canyon Group 08 231TRSCU Upper Triassic Series 08 231WIGT Wingate Sandstone of Glen Canyon Group 08 234TRSCM Middle Triassic Series 08 237TRSCL Lower Triassic Series 08 300PLZC Paleozoic Erathem 08 310CTLR Cutler Formation 08 310LYNS Lyons Formation 08 310PMPV Permian-Pennsylvanian Systems 08 310PRMN Permian System 08 310SGRC Sangre De Cristo Formation 08 310STNK Satanka Shale 08 310WBER Weber Formation 08 311BGBS Big Basin Formation 08 311PRMNU Upper Permian Series 08 311TOLG Taloga Formation of Cragin 08 317FNTN Fountain Formation 08 317IGLD Ingleside Formation 08 317MRON Maroon Formation 08 317PRMNL Lower Permian Series 08 320PSLV Pennsylvanian System 08 321PSLVU Upper Pennsylvanian Series 08 324HRMS Hermosa Formation 08 324MNRN Minturn Formation 08 324PSLVM Middle Pennsylvanian Series 08 327BLDN Belden Formation 08 327PSLVL Lower Pennsylvanian Series 08 330MSSP Mississippian System 08 331LDVL Leadville Limestone 08 331MDSN Madison Group (Upper and Lower Mississippian) 08 331MSSPU Mississippian, Upper 08 337MSSPL Mississippian, Lower 08 340DVNN Devonian System 08 341CHFF Chaffee Formation 08 341DVNNU Devonian, Upper 08 341PRTG Parting Quartzite Member of Chaffee Formation 08 347DVNNL Devonian, Lower 08 350SLRN Silurian System 08 351SLRNU Silurian, Upper 08 354SLRNM Silurian, Middle 08 357SLRNL Silurian, Lower 08 360ODVC Ordovician System 08 361ODVCU Ordovician, Upper 08 364ODVCM Ordovician, Middle 08 367MNTU Manitou Formation 08 367ODVCL Ordovician, Lower 08 370CMBR Cambrian System 08 371CMBRU Cambrian, Upper 08 371SWCH Sawatch Sandstone Formation 08 374CMBRM Cambrian, Middle 08 377CMBRL Lower Cambrian Series 08 400PCMB Precambrian Erathem 08 400PCMBC Precambrian Crystalline Rocks 08 BASEMENT Basement 08 BEDROCK Bedrock 09 110AVTN Alluvium, Terrace, Non-Glacial 09 111ALVM Holocene Alluvium 09 111SWMP Swamp Deposits 09 112DFSF Drift, Stratified 09 112SRFD Stratified Deposits, Undifferentiated 09 112TILL Till 09 231EBRL East Berlin Formation 09 231HLYK Holyoke Basalt 09 231HMPD Hampden Basalt 09 231IGNSE Igneous Extrusives 09 231IGNSI Igneous Intrusives 09 231NHVN New Haven Formation 09 231PRLD Portland Formation 09 231SDMN Sedimentary Bedrock 09 231SLMD Shuttle Meadow Formation 09 231TLCT Talcott Basalt 09 300CBCL Carbonate Crystalline Bedrock 09 300CRSL Crystalline Rocks, Undifferentiated 09 300NCBC Non-Carbonate Crystalline Bedrock 09 400NCBC Non-Carbonate Crystalline Bedrock 09 BASEMENT Basement 09 BEDROCK Bedrock 10 100CNZC Cenozoic Erathem 10 110ALVM Quaternary Alluvium 10 110QRNR Quaternary System 10 111ALVL Alluvial Deposits 10 111CPSP Cypress Swamp Formation 10 111CRLB Carolina Bay Deposits 10 111DUNED Dune Deposits 10 111HCPC Holocene-Pleistocene Series 10 111HLCN Holocene Series 10 111MRSH Marsh Deposits 10 111SPIT Spit Deposits 10 111SRLN Shoreline Deposits 10 111SWMP Swamp Deposits 10 111UPBG Upland Bog Deposits 10 111UPLD Upland Deposits 10 112CLMB Columbia Group 10 112DLBY Delaware Bay Group 10 112LCHG Lynch Heights Formation 10 112NTCK Nanacoke Deposits 10 112OMAR Omar Formation 10 112PCPC Pleistocene-Pliocene Series 10 112PNSK Pensauken Formation 10 112SCCR Scotts Corners Formation 10 112SNVL Staytonville Unit of Columbia Formation 10 120TRTR Tertiary System 10 121BRDN Brandywine Formation 10 121BRMR Bryn Mawr Formation 10 121BVDM Beaverdam Sand 10 121CSPK Chesapeake Group 10 121PLCN Pliocene Series 10 121YRKN Yorktown Formation 10 122BTNY Bethany Formation 10 122CLVR Calvert Formation 10 122CPNK Choptank Formation 10 122CSLD Cheswold Aquifer 10 122CSPK Chesapeake Group 10 122FDBG Federalsburg Aquifer 10 122FRDC Frederica Aquifer 10 122MLFD Milford Aquifer 10 122MNKN Manokin Aquifer 10 122MOCN Miocene Series 10 122PCMK Pocomoke Aquifer 10 122SMRS St Marys Formation 10 123GLCN Glauconitic Unit 10 123OLGC Oligocene Series 10 124DEAL Deal Formation 10 124ECPC Eocene-Paleocene Series 10 124EOCN Eocene Series 10 124GLCN Glauconitic Unit 10 124MNSQ Manasquan Formation 10 124NNJM Nanjemoy Formation 10 124PMNK Pamunkey Group 10 124PNPN Piney Point Formation 10 124PPNJ Piney Point-Nanjemoy Aquifer 10 124SAKR Shark River Formation 10 125AQRC Aquia and Rancocas Aquifer 10 125HRRS Hornerstown Formation 10 125PLCN Paleocene Series 10 125RCCS Rancocas Formation 10 125VNCN Vincentown Formation 10 200MSZC Mesozoic Erathem 10 210CRCS Cretaceous System 10 211CRCSU Upper Cretaceous Series 10 211EGLS Englishtown Formation 10 211MCVL Merchantville Formation 10 211MGTY Magothy Formation 10 211MLRL Mount Laurel Sand 10 211MNMT Monmouth Formation 10 211MRSL Marshalltown Formation 10 211MTWN Matawan Formation 10 211NVSK Navesink Formation 10 211RRTN Raritan Formation 10 217CRCSL Lower Cretaceous Series 10 217NNMR Nonmarine Cretaceous Aquifer 10 217PTMC Potomac Formation 10 300CCKV Cockeysville Marble 10 300GLRM Glenarm Series 10 300PLZC Paleozoic Erathem 10 300PRDP Port Deposit Gneiss 10 300WLMG Wilmington Complex 10 300WSCK Wissahickon Formation 10 BASEMENT Basement 10 BEDROCK Bedrock 11 100CNZC Cenozoic Erathem 11 110ALVM Quaternary Alluvium 11 110QRNR Quaternary System 11 110TRRC Terrace Deposits 11 111HCPC Holocene-Pleistocene Series 11 111HLCN Holocene Series 11 111LLND Lowland Deposits 11 112PCPC Pleistocene-Pliocene Series 11 112PLSC Pleistocene Series 11 112PMLC Pamlico Formation 11 112SDLD Sunderland Formation 11 112UPLD Upland Deposits 11 120TRTR Tertiary System 11 121BRDN Brandywine Formation 11 121BRMRG Bryn Mawr Gravel 11 121PLCN Pliocene Series 11 122CLVR Calvert Formation 11 122CSPK Chesapeake Group 11 122MOCN Miocene Series 11 210CRCS Cretaceous System 11 217ARDL Arundel Formation 11 217CRCSL Lower Cretaceous Series 11 217POMC Potomac Group 11 217PPSC Patapsco Formation 11 217PTXN Patuxent Formation 11 300BOLD Boulder Gneiss 11 300GRGN Georgetown Mafic Complex 11 300LPELC Lower Pelitic Schist 11 300PLZC Paleozoic Erathem 11 377SKVL Sykesville Formation 11 400GBGG Granodiorite and Biotite Granite Gneiss 11 400KNSG Kensington Quartz Diorite 11 BASEMENT Basement 11 BEDROCK Bedrock 12 100CNZC Cenozoic Erathem 12 110NRSD Nonartesian Sand Aquifer 12 110QRNR Quaternary System 12 110SAQS Surficial Aquifer System 12 111HCPC Holocene-Pleistocene Series 12 111HLCN Holocene Series 12 111LKFL Lake Flirt Marl 12 111NRSD Nonartesian Sand Aquifer 12 111TLME Terrace Deposits, Lower, Marine and Estuarine 12 112ALDG Ayers Landing Marl Member of Caloosahatchee Formation 12 112ANSS Anastasia Formation 12 112BBRC Bee Branch Member of Caloosahatchee Formation 12 112BRDN Brandywine Formation 12 112BSCNN Biscayne Limestone Aquifer 12 112BSCNS Biscayne Sandy Limestone Aquifer 12 112CEMH Coffee Mill Hammock Marl Member of Ft. Thompson Formation 12 112CLSC Caloosahatchee Aquifer 12 112CLSCR Caloosahatchee Formation 12 112COHR Coharie Formation 12 112CQUN Coquina Aquifer 12 112FDND Fort Denaud Member of Caloosahatchee Formation 12 112FTMP Fort Thompson Formation 12 112KLRG Key Largo Limestone 12 112LBLL La Belle Clay Member of Tamiami Formation 12 112LMSN Limestone Aquifer 12 112MIMI Miami Oolite 12 112MLBR Melbourne Bed of Pamlico Formation 12 112NRSD Nonartesian Sand Aquifer 12 112OKKC Okaloakoochee Member of Ft. Thompson Formation 12 112PLSC Pleistocene Series 12 112PMLC Pamlico Formation 12 112PNLY Penholoway Formation 12 112SANDA Sand Aquifer 12 112SDGVA Sand and Gravel Aquifer 12 112SDLD Sunderland Formation 12 112SNDS Sandstone Aquifer 12 112SVBF Silver Bluff Formation 12 112TCMR Terrace Deposits, Marine 12 112TLBT Talbot Formation 12 112WCMC Wicomico Formation 12 120FLRD Floridan Aquifer System 12 120FLRDL Lower Floridan Aquifer 12 120FLRDU Upper Floridan Aquifer 12 120NFSG Northwestern Florida Sand-and-Gravel Aquifer 12 120NRSD Nonartesian Sand Aquifer 12 120TRTR Tertiary System 12 120UFAQ Upper Floridan Aquifer 12 121ADHL Alluvium and Deltaic Deposits, High Level 12 121ALVA Alva Clay Member of Tamiami Formation 12 121BKGM Buckingham Limestone of Tamiami Formation 12 121BYSR Bay Shore Member of Tamiami Formation 12 121CRNL Citronelle Formation 12 121DPLN Duplin Marl 12 121IAQS Intermediate Aquifer System 12 121LBLL La Belle Formation 12 121MCKS Murdock Station Member of Tamiami Formation 12 121OCHP Ochopee Limestone Member of Tamiami Formation 12 121ORTN Ortona Sand Member of Tamiami Formation 12 121PCPC Pleistocene-Pliocene Series 12 121PLCN Pliocene Series 12 121TMIM Tamiami Formation 12 121TMIMN Tamiami Formation, Limestone Aquifer 12 121TMIMR Tamiami Formation, Shell-Marl Aquifer 12 122ALCH Alachua Formation 12 122ALVA Alva Clay Member of Tamiami Formation 12 122AMBF Alum Bluff Group 12 122BKGM Buckingham Limestone of Tamiami Formation 12 122BNVL Bone Valley Formation 12 122BYSR Bay Shore Member of Tamiami Formation 12 122CHPL Chipola Formation 12 122CRLN Charlton Formation 12 122CTTC Chattahoochee Formation 12 122ECMB Escambia Sand Member of Pensacola Clay 12 122FRPR Fort Preston Formation 12 122HTRN Hawthorn Formation 12 122HTRNN Hawthorn Limestone Aquifer 12 122HTRNS Hawthorn Sand and Gravel Aquifer 12 122ICGU Intermediate Confining Unit 12 122JKBF Jackson Bluff Formation 12 122LMSN Limestone Aquifer 12 122MCKS Murdock Station Member of Tamiami Formation 12 122MCSK Miccosukee Formation 12 122MOCN Miocene Series 12 122MOCNC Miocene Coarse Clastics 12 122MOCNU Upper Miocene Series 12 122OCHP Ochopee Limestone Member of Tamiami Formation 12 122OKGV Oak Grove Sand Member of Shoal River Formation 12 122ORTN Ortona Sand Member of Tamiami Formation 12 122PCRS Pinecrest Sand 12 122PSCL Pensacola Clay 12 122PSCLL Pensacola Clay, Lower Member 12 122PSCLU Pensacola Clay, Upper Member 12 122RDBY Red Bay Formation 12 122SDGV Sand and Gravel Aquifer 12 122SLML Shell-Marl Aquifer 12 122SLRV Shoal River Formation 12 122SMRK St. Marks Formation 12 122SNDS Sandstone Aquifer 12 122TAMP Tampa Limestone 12 122TMIM Tamiami Formation 12 122TMIMN Tamiami Formation, Limestone Aquifer 12 122TMIMR Tamiami Formation, Shell-Marl Aquifer 12 122TRRY Torreya Formation 12 122YLRV Yellow River Formation 12 123BCTN Bucatunna Clay Member of Byram Formation 12 123BYRM Byram Formation 12 123CKTP Chickasawhay Limestone and Tampa Formation, Undifferentiated 12 123DCCC Duncan Church Beds Member of Suwannee Limestone 12 123LMSN Limestone Aquifer 12 123MRNN Marianna Limestone 12 123OLGC Oligocene Series 12 123SWNN Suwannee Limestone 12 123VKBG Vicksburg Group 12 124AVPK Avon Park Limestone 12 124BSHI Bashi Marl Member of Hatchetigbee Formation 12 124CLBR Claiborne Group 12 124CLRV Crystal River Formation 12 124EOCN Eocene Series 12 124HCGB Hatchetigbee Formation 12 124IGLS Inglis Formation 12 124JCKS Jackson Group 12 124LFAQ Lower Floridan Aquifer 12 124LKCT Lake City Limestone 12 124LSBN Lisbon Formation 12 124MCGU Middle Confining Unit 12 124OCAL Ocala Limestone 12 124OCALG Ocala Group 12 124OCALL Ocala Limestone, Lower Member 12 124OCALU Ocala Limestone, Upper Member 12 124OLDM Oldsmar Limestone 12 124OLDMN Oldsmar Limestone Aquifer 12 124STNC Steinhatchee Dolomite Member of Crystal River Formation 12 124TLLS Tallahassee Limestone 12 124TLLT Tallahatta Formation 12 124WLCXG Wilcox Group 12 124WLSN Williston Formation 12 125CDRK Cedar Keys Limestone 12 125CDRKN Cedar Keys Limestone Aquifer 12 125MIDY Midway Formation 12 125PLCN Paleocene Series 12 125SFCU Sub-Floridan Confining Unit 12 200MSZC Mesozoic Erathem 12 210CCJC Cretaceous-Jurassic Systems 12 210FPRC Fort Pierce Formation 12 211AKNS Atkinson Formation 12 211AUSN Austin Group 12 211CDSD Card Sound Dolomite 12 211CRCSU Upper Cretaceous Series 12 211EUTW Eutaw Formation 12 211LCRS La Crosse Sandstone 12 211LWSN Lawson Limestone 12 211NVRR Navarro Group 12 211PLOT Pilot Sandstone Member of Tuscaloosa Formation 12 211SELM Selma Group 12 211TALR Taylor Group 12 211TSCLL Tuscaloosa Formation, Lower Member 12 211TSCLM Tuscaloosa Formation, Middle Member 12 211TSCLS Massive Sandstone Member of Lower Tuscaloosa Formation 12 211TSCLU Tuscaloosa Formation, Upper Member 12 211TUCL Tuscaloosa Group 12 217BGCP Big Cypress Group 12 217CRCSL Lower Cretaceous Series 12 217DLRB Dollar Bay Formation 12 217FKBG Fredericksburg Group 12 217FRLK Ferry Lake Anhydrite 12 217GLDS Glades Group 12 217HSTN Hosston Formation 12 217LKTF Lake Trafford Formation 12 217NPLB Naples Bay Group 12 217OCRF Ocean Reef Group 12 217PGRD Punta Gorda Anhydrite 12 217RDSS Rodessa Formation 12 217SDGV Sands and Gravels, Undifferentiated 12 217SNLD Sunniland Limestone 12 217TRNT Trinity Group 12 217TRNTL Lower Trinity 12 217TRNTU Upper Trinity 12 217WSHT Washita Group 12 221COVL Cotton Valley Group 12 221DNKM Denkman Sandstone 12 221HSVL Haynesville Formation 12 221JRSCU Upper Jurassic Series 12 221LUNN Louann Salt 12 221NOPL Norphlet Sandstone 12 221SMKV Smackover Formation 12 221WERR Werner Anhydrite 12 230BSLT Basalt 12 230DIBS Diabase 12 230RYLT Rhyolite 12 230TRSC Triassic System 12 230TUFF Tuff 12 231NWRK Newark Group 12 231TRSCU Upper Triassic Series 12 300PLZC Paleozoic Erathem 12 340DVNN Devonian System 12 350SLRN Silurian System 12 360ODVC Ordovician System 12 367ODVCL Ordovician, Lower 12 370CMBR Cambrian System 12 400BCGR Biotitic Granite 12 400GRNT Precambrian Granite 12 400HBDD Hornblende Diorite 12 400PCMB Precambrian Erathem 12 BASEMENT Basement 12 BEDROCK Bedrock 13 110QRNR Quaternary System 13 110SFCL Surficial Aquifer 13 110SPRL Saprolite 13 111ALVM Holocene Alluvium 13 111HLCN Holocene Series 13 112CLMB Columbia Group 13 112PLSC Pleistocene Series 13 120CNNL Channel Sand 13 120FDDB Floridan, Millers Pond, and Dublin Aquifers (Multiaquifer) 13 120FDMP Floridan, and Millers Pond Aquifers (Multiaquifer) 13 120FDMV Floridan, Millers Pond, Dublin and Midville Aquifers (Multiaquifer) 13 120FLRD Floridan Aquifer System 13 120FLRDL Lower Floridan Aquifer 13 120FLRDU Upper Floridan Aquifer 13 120FRND Lower Floridan Aquifer-Fernandina Permeable Zone 13 121CRLN Charlton Formation 13 121DPLN Duplin Marl 13 121PLCN Pliocene Series 13 122AMBF Alum Bluff Group 13 122BRCK Brunswick Aquifer System 13 122BRCKL Lower Brunswick Aquifer 13 122BRCKU Upper Brunswick Aquifer 13 122HTRN Hawthorn Formation 13 122MOCN Miocene Series 13 122MOCNL Lower Miocene 13 122MOCNM Middle Miocene 13 122TAMP Tampa Limestone 13 123BYRM Byram Formation 13 123COPR Cooper Marl 13 123FLRV Flint River Formation 13 123MRNN Marianna Limestone 13 123OLGC Oligocene Series 13 123SWNN Suwannee Limestone 13 123VKBG Vicksburg Group 13 124AVPK Avon Park Limestone 13 124BAKM Black Mingo Group 13 124BRNL Barnwell Formation 13 124CCFD Clinchfield Sand 13 124CLBR Claiborne Group 13 124CNGR Congaree Formation 13 124EOCN Eocene Series 13 124FSBR Fishburne Formation 13 124GDDB Gordon, Millers Pond, and Dublin Aquifers (Multiaquifer) 13 124GDMP Gordon and Millers Pond Aquifers (Multiaquifer) 13 124GDMV Gordon, Millers Pond, Dublin and Midville Aquifers (Multiaquifer) 13 124GRDN Gordon Aquifer System 13 124HCGB Hatchetigbee Formation 13 124IRNN Irwinton Sandstone Member of Barnwell Formation 13 124JCKS Jackson Group 13 124LKCT Lake City Limestone 13 124LSBN Lisbon Formation 13 124MCBN Mc Bean Formation 13 124NNFL Nanafalia Formation 13 124OCAL Ocala Limestone 13 124OLDM Oldsmar Limestone 13 124SDVL Sandersville Limestone Member of Barnwell Formation 13 124SNTE Santee Limestone 13 124TGGS Twiggs Clay Member of Barnwell Formation 13 124TLLT Tallahatta Formation 13 124TSCM Tuscahoma Formation 13 124UPTR Upper Three Runs Aquifer 13 124WLCXG Wilcox Group 13 124WLHL Warley Hill Marl 13 125BKMG Black Mingo Formation 13 125CLTN Clayton Formation 13 125DBLN Dublin Aquifer System 13 125DBLNL Dublin Aquifer System, Lower Aquifer 13 125DBLNU Dublin Aquifer System, Upper Aquifer 13 125DBMV Dublin-Midville Aquifer System 13 125ELNN Ellenton Formation 13 125LNGS Lang Syne Member of Rhems Formation 13 125MDWY Midway Group 13 125MPDB Millers Pond and Dublin Aquifers (Multiaquifer) 13 125MPMV Millers Pond, Dublin, and Midville Aquifers (Multiaquifer) 13 125MRBC Meyers Branch Confining System 13 125MSPD Millers Pond Aquifer 13 125PLCN Paleocene Series 13 125PRCK Porters Creek Clay 13 125RHMS Rhems Formation 13 125SDLG Sawdust Landing Member of Rhems Formation 13 125TMSI Tamesi Equivalent 13 125WMBG Williamsburg Formation 13 211AKNS Atkinson Formation 13 211BKCK Black Creek Formation 13 211BLFN Blufftown Formation 13 211CPFR Cape Fear Formation 13 211CRCSU Upper Cretaceous Series 13 211CSST Cusseta Sand 13 211EUTW Eutaw Formation 13 211LWSN Lawson Limestone 13 211MDDF Middendorf Formation 13 211MDVL Midville Aquifer System 13 211MDVLL Midville Aquifer System, Lower Aquifer 13 211MDVLU Midville Aquifer System, Upper Aquifer 13 211PEED Peedee Formation 13 211PROT Perote Member of Providence Sand 13 211PVDC Providence Sand 13 211RPLY Ripley Formation 13 211TSCL Tuscaloosa Formation 13 211TSCLL Tuscaloosa Formation, Lower Member 13 211TSCLM Tuscaloosa Formation, Middle Member 13 211TSCLU Tuscaloosa Formation, Upper Member 13 217CRCSL Lower Cretaceous Series 13 218CMNC Comanchean Series 13 230NWRK Newark Group 13 300PLZC Paleozoic Erathem 13 320CRSL Crystalline Rocks 13 320PSLV Pennsylvanian System 13 320TLDG Talladega Formation 13 327CBOM Crab Orchard Mountains Formation 13 327GZRD Gizzard Formation 13 327RCNM Raccoon Mountain Member of Gizzard Formation 13 327SWNE Sewanee Member of Crab Orchard Mountains Formation 13 331BNGR Bangor Limestone 13 331FLYD Floyd Shale 13 331GLCD Golconda Formation 13 331HRSL Hartselle Sandstone 13 331SGVV Ste Genevieve Limestone 13 331STLS St Louis Limestone 13 337FRPN Fort Payne Chert/formation 13 337LVDR Lavender Shale Member 13 337MURY Maury Formation 13 344ARMC Armuchee Chert 13 344FRGM Frog Mountain Sandstone 13 345CTNG Chattanooga Shale 13 350RDMN Red Mountain Formation 13 361SQTC Sequatchie Formation 13 364CKMG Chickamauga Limestone 13 364RCKM Rockmart Slate 13 367KNOXG Knox Group 13 367NEWL Newala Limestone 13 371CNSG Conasauga Formation 13 371MDVL Maynardville Limestone 13 374MRVL Maryville Limestone 13 377ROME Rome Formation 13 377SHDY Shady Dolomite 13 377WSNR Weisner Formation 13 400PCMB Precambrian Erathem 13 BASEMENT Basement 13 BEDROCK Bedrock 15 100CLRB Coralline Rubble Deposits 15 100CNZC Cenozoic Erathem 15 100LMSN Limestone 15 100VLCC Volcanic Rocks 15 110KAU Kau Volcanic Series, Undifferentiated 15 110PUNA Puna Volcanic Series, Undifferentiated 15 110QRNR Quaternary System 15 111AFCF Artificial Fill 15 111ALVD Alluvium and Landslide Deposits, Unconsolidated 15 111ALVM Holocene Alluvium 15 111AVLD Alluvial and Landslide Deposits, Unconsolidated 15 111BECH Beach Deposits 15 111DUNC Dune Sand, Calcareous, Unconsolidated 15 111DUNN Dune Sand, Noncalcareous, Unconsolidated 15 111HLCN Holocene Series 15 111HULLH Hualalai Volcanic Series, Historic Volcanic Rocks 15 111HV75 Historic Volcanic Rocks (Lava Flows of 1750?) 15 111KUAV Kau Volcanic Series, Historic Volcanic Rocks 15 111LKUC Lake Deposit, Unconsolidated Calcareous Sand 15 111LPHHU Laupahoehoe Volcanic Series, Lava Flows and Cinder of Upper Member 15 111PNCCH Puna Volcanic Series, Historic Cinder Cones 15 111PNLCH Puna Volcanic Series, Historic Littoral Cones 15 111PNLFH Puna Volcanic Series, Historic Lava Flows 15 111UCCD Unconsolidated Calcareous Dune Sand 15 112ALVMO Alluvium, Older 15 112ANON Ainoni Volcanics 15 112AVLD Alluvium and Landslid Deposits, Consolidated 15 112BCKP Black Point Basalt 15 112BGFL Big Falls Picritic Basalts, Hana Volcanic Series 15 112CCCM Calcareous Marine Deposits (Limestone), Consolidated 15 112CDCC Calcareous Deposits (Limestone), Consolidated 15 112CDDM Marine Deposits (Limestone), Consolidated 15 112CSTL Castle Volcanics 15 112DMHD Diamond Head Tuff 15 112DUNC Dune Sand, Calcareous, Consolidated 15 112FVPG Fluvial, Periglacial, and Glacial Conglomerates 15 112HANA Hana Volcanic Series, Undifferentiated 15 112HAWI Hawi Volcanic Series, Undifferentiated 15 112HIKU Haiku Volcanics 15 112HILN Hilina Volcanic Series, Lava Flows 15 112HKCC Hamakua Volcanic Series, Cinder Cones 15 112HKLF Hamakua Volcanic Series, Lava Flows 15 112HLAC Hualalai Volcanic Series, Prehistoric Ash and Cinder Deposits 15 112HLCC Hualalai Volcanic Series, Prehistoric Cinder Cones 15 112HLLF Hualalai Volcanic Series, Prehistoric Lava Flows 15 112HMKU Hamakua Volcanic Series, Undifferentiated 15 112HNCC Hana Volcanic Series, Cinder Cones 15 112HNDC Hana Volcanic Series, Dike Compartments 15 112HNFF Hana Volcanic Series, Firefountain Deposits of Ash and Pumice 15 112HNKV Hana Volcanic Series, In Kipahulu Valley 15 112HNLF Hana Volcanic Series, Lava Flows, Undifferentiated 15 112HNLL Honolulu Volcanic Series, Undifferentiated 15 112HNWI Hanawi Basaltic Andesite, Hana Volcanic Series 15 112HULL Hualalai Volcanic Series, Prehistoric Volcanic Rocks, Undifferentiated 15 112HWCC Hawi Volcanic Series, Cinder Cones 15 112HWDC Hawi Volcanic Series, Dike Compartments 15 112HWLF Hawi Volcanic Series, Lava Flows 15 112HWLO Hawaiiloa Volcanics 15 112KAAU Kaau Volcanics 15 112KENE Keanae Basalt, Hana Volcanic Series 15 112KHCC Kahuku Volcanic Series, Cinder Cones 15 112KHLC Kahuku Volcanic Series, Littoral Cones 15 112KHLF Kahuku Volcanic Series, Lava Flows 15 112KHUK Kahuku Volcanic Series, Undifferentiated 15 112KIKI Kiekie Volcanic Series, Undifferentiated 15 112KILF Kiekie Volcanic Series, Lava Flows 15 112KITF Kiekie Volcanic Series, Tuffaceous Deposits 15 112KKFF Koko Volcanics, Firefountain Deposits 15 112KKLF Koko Volcanics, Lava Flows 15 112KKTF Koko Volcanics, Tuff Deposits 15 112KLCC Kula Volcanic Series, Cinder Cones 15 112KLDC Kula Volcanic Seres, Dike Compartments 15 112KLIH Kalihi Volcanics 15 112KLLF Kula Volcanic Series, Lava Flows 15 112KLPP Kalaupapa Basalt (Lava Flows) 15 112KLTF Kula Volcanic Series, Tuff Deposits 15 112KMNK Kamanaiki Basalt 15 112KMUK Kaimuki Basalt 15 112KNOH Kaneohe Volcanics 15 112KOAT Koloa Volcanic Series, Ash and Tuffaceous Soil Beds 15 112KOCC Koloa Volcanic Series, Cinder Cones 15 112KOKO Koko Volcanics, Undifferentiated 15 112KOLF Koloa Volcanic Series, Lava Flows 15 112KOLO Koloa Volcanic Series, Undifferentiated 15 112KOTC Koloa Volcanic Series, Tuff Cone At Kilauea Bay 15 112KPUL Kapaula Basaltic Andesite, Hana Volcanic Series 15 112KUCC Kau Volcanic Series, Prehistoric Cinder Cones 15 112KUHW Kuhiwa Basaltic Andesite, Hana Volcanic Series 15 112KULA Kula Volcanic Series, Undifferentiated 15 112KULC Kau Volcanic Series, Prehistoric Littoral Cones 15 112KULF Kau Volcanic Series, Prehistoric Lava Flows 15 112KUPO Kaupo Mud Flow 15 112LGMP Lagoon Deposits of Mana Plain 15 112LHIN Lahaina Volcanic Series, Undifferentiated 15 112LNCC Lahaina Volcanic Series, Cinder Cones 15 112LNLF Lahaina Volcanic Series, Lava Flows 15 112LPAS Laupahoehoe Volcanic Series, Ash Deposits 15 112LPCC Laupahoehoe Volcanic Series, Lower Member, Cinder Cones 15 112LPHHL Laupahoehoe Volcanic Series, Lower Member Undifferentiated 15 112LPLF Laupahoehoe Volcnnic Series, Lower Member, Lava Flows 15 112MKMN Moku Manu Volcanics 15 112MKNO Makaino Basaltic Andesite, Hana Volcanic Series 15 112MKPP Makapipi Basalts, Hana Volcanic Series 15 112MKPU Mokapu Basalt 15 112MKWO Makawao Breccia 15 112MNWL Maunawili Volcanics 15 112MOKL Mokolea Basalt 15 112MSMN Mossman Picritic Basalt, Hana Volcanic Series 15 112MUUM Mauumae Volcanics 15 112NNOL Ninole Volcanic Series 15 112NUUN Nuuanu Volcanics 15 112OHIA Ohia Basalt, Hana Volcanic Series 15 112PAHL Pahala Ash 15 112PAKE Paakea Basalt, Hana Volcanic Series 15 112PALI Pali Volcanics 15 112PBLF Punchbowl Volcanics, Lava Flows 15 112PBTF Punchbowl Volcanics, Tuff Deposits 15 112PCBL Punchbowl Volcanics, Undifferentiated 15 112PINU Piinaau Basalt, Hana Volcanic Series 15 112PLCC Pololu Volcanic Series, Cinder Cone 15 112PLCF Pololu Volcanic Series, Crater-Filling Lava and Breccia 15 112PLDC Pololu Volcanic Series, Dike Compartment 15 112PLIK Palikea Formation, Koloa Volcanic Series 15 112PLLF Pololu Volcanic Series, Lava Flows 15 112PLLU Pololu Volcanic Series, Undifferentiated 15 112PLSC Pleistocene Series 15 112PNAS Puna Volcanic Series, Prehistoric Ash Deposits 15 112PNCC Puna Volcanic Series, Prehistoric Cinder Cones 15 112PNLC Puna Volcanic Series, Prehistoric Littoral Cones 15 112PNLF Puna Volcanic Series, Prehistoric Lava Flows 15 112PUWL Puuwalu Basalt, Hana Volcanic Series 15 112RCKH Rocky Hill Volcanics 15 112SDMR Sedimentary Deposits, Undifferentiated 15 112SLMA Salt Lake-Makalapa-Aliamanu Tuff Deposits 15 112TGSC Training School Volcanics 15 112TSGL Tantalus-Sugar Loaf Volcanic Rocks, Undifferentiated 15 112TSLF Tantalus-Sugar Loaf Volcanic Rocks, Firefountain Deposits 15 112TSLL Tantalus-Sugar Loaf Volcanic Rocks, Lava Flows 15 112ULUP Ulupau Tuff 15 112WAIK Waiaaka Basaltic Andesite, Hana Volcanic Series 15 112WAWA Waawaa Volcanics 15 112WKML Waiokamilo Basalt, Hana Volcanic Series 15 112WLUN Wailuanui Basalt, Hana Volcanic Series 15 120KILU Kailua Volcanic Series, Undifferentiated 15 120KLBC Koolau Volcanic Series, Breccia 15 120KLDK Koolau Volcanic Series, Dike Complex 15 120KLLF Koolau Volcanic Series, Lava Flows 15 120KLTF Koolau Volcanic Series, Tuff 15 120KNPU Kanapou Volcanic Series, Undifferentiated 15 120KOLU Koolau Volcanic Series, Undifferentiated 15 120KPCF Kanapou Volcanic Series, Caldera-Filling Volcanics 15 120KPEC Kanapou Volcanic Series, Extra-Caldera Volcanics 15 120KUDK Kailua Volcanic Series, Dike Complex 15 120KULF Kailua Volcanic Series, Lava Flows 15 120TRTR Tertiary System 15 120WINE Waianae Volcanic Series, Undifferentiated 15 120WNBC Waianae Volcanic Series, Breccia 15 120WNDK Waianae Volcanic Series, Dike Complex 15 120WNLF Waianae Volcanic Series, Lava Flows 15 120WNPY Waianae Volcanic Series, Pyroclastic Deposits 15 121EMCCL East Molokai Volcanic Series, Lower Member, Cinder Cones 15 121EMCCU East Molokai Volcanic Series, Upper Member, Cinder Cones 15 121EMCD East Molokai Volcanic Series, Caldera Complex 15 121EMDC East Molokai Volcanic Series, Dike Compartment 15 121EMDMU East Molokai Volcanic Series, Upper Member, Domes 15 121EMLFL East Molokai Volcanic Series, Lower Member, Lava Flows 15 121EMLFU East Molokai Volcanic Series, Upper Member, Lava Flows 15 121EMLK East Molokai Volcanic Series, Undifferentiated 15 121HLCL Honolua Volcanic Series, Cinder Cones and Lava Domes 15 121HLDC Honolua Volcanic Series, Dike Compartments 15 121HLLF Honolua Volcanic Series, Lava Flows 15 121HMDC Honomanu Volcanic Series, Dike Compartments 15 121HMFC Honomanu Volcanic Series, Firefountain and Cone Deposits 15 121HMLF Honomanu Volcanic Series, Lava Flows 15 121HNLU Honolua Volcanic Series, Undifferentiated 15 121HNMN Honomanu Volcanic Series, Undifferentiated 15 121HUPU Haupu Formation, Waimea Canyon Volcanic Series, Crater-Filling Lava 15 121LANI Lanai Volcanic Series, Undifferentiated 15 121LNDC Lanai Volcanic Series, Dike Compartments 15 121LNLF Lanai Volcanic Series, Lava Flows 15 121MKUN Mokuone Member of Makaweli Formation, Breccia and Conglomerate 15 121MKWL Makaweli Formation, Waimea Canyon Volcanic Series, Lava Flows 15 121NPDC Napali Formation, Dike Compartments, Waimea Canyon Volcanic Series 15 121NPLI Napali Formation, Waimea Canyon Volcanic Series 15 121OLKL Olokele Formation, Waimea Canyon Volcanic Series 15 121PLCN Pliocene Series 15 121PNDC Paniau Volcanic Series, Dike Compartments 15 121PNIU Paniau Volcanic Series, Undifferentiated 15 121PNLF Paniau Volcanic Series, Lava Flows 15 121WKCC Wailuku Volcanic Series, Cinder Cones 15 121WKCD Wailuku Volcanic Series, Dike Compartment (Not Part of Dike Complex) 15 121WKDK Wailuku Volcanic Series, Dike Complex 15 121WKFF Wailuku Volcanic Series, Firefountain Deposits of Tuff 15 121WKLF Wailuku Volcanic Series, Lava Flows 15 121WKLV Wailuku Volcanic Series, Lava Cones 15 121WKPC Wailuku Volcanic Series, Pit Crater Deposits, Breccia and Conglomerate 15 121WLUK Wailuku Volcanic Series, Undifferentiated 15 121WMCC West Molokai Volcanic Series, Basalt Cinder Cones 15 121WMCN Waimea Canyon Volcanic Series, Undifferentiated 15 121WMDC West Molokai Volcanic Series, Dike Compartment 15 121WMLF West Molokai Volcanic Series, Basalt Lava Flows 15 121WMLK West Molokai Volcanic Series, Undifferentiated 15 BASEMENT Basement 15 BEDROCK Bedrock 16 100CNZC Cenozoic Erathem 16 100VLFL Valley Fill 16 110ALVM Quaternary Alluvium 16 110QRNR Quaternary System 16 110SDMS Sediments 16 110SKRV Snake River Group 16 110TRVN Travertine 16 110VLCC Volcanic Rocks 16 111ALVM Holocene Alluvium 16 111HLCN Holocene Series 16 111TRRCY Terrace Gravel, Younger 16 111TRVN Travertine 16 112ALVM Alluvium 16 112AMCF American Falls Lake Beds 16 112BCKM Black Mesa Gravel of Idaho Group 16 112BGHL Big Hole Basalt of Snake River Group 16 112BPFV Basalt of Portneuf Valley 16 112BRLY Burley Lake Beds 16 112BRUN Bruneau Formation 16 112BSPG Bancroft Springs Basalt of Snake River Group 16 112CDRB Cedar Butte Basalt 16 112CRSS Crowsnest Gravel of Snake River Group 16 112FLRV Falls River Basalt 16 112GLFR Glenns Ferry Formation of Idaho Group 16 112GRRT Gerrit Basalt 16 112HKBR Huckleberry Ridge Tuff 16 112IDHO Idaho Group 16 112LITL Little Creek Formation 16 112LVCK Lava Creek Tuff 16 112MALD Malad Member of Thousand Springs Basalt 16 112MCHD Michaud Gravel 16 112MCKN Mckinney Basalt of Snake River Group 16 112MDSN Madison Basalt of Snake River Group 16 112MENN Menan Tuff 16 112MEON Melon Gravel of Snake River Group 16 112MFLS Mesa Falls Tuff 16 112MNDK Minidoka Basalt 16 112OTSH Outwash 16 112PLSC Pleistocene Series 16 112PLTU Plateau Rhyolite 16 112PLUS Palouse Formation 16 112RAFT Raft Formation 16 112SGBL Sugar Bowl Gravel of Snake River Group 16 112SNBM Sunbeam Formation 16 112SSPG Sand Springs Basalt of Snake River Group 16 112TRRCO Terrace Gravel, Older 16 112TRVN Travertine 16 112TSPG Thousand Springs Basalt of Snake River Group 16 112TUAN Tuana Gravel of Idaho Group 16 112WDGD Wendell Grade Basalt of Snake River Group 16 112YLSN Yellowstone Group 16 120SDMS Sediments 16 120TRTR Tertiary System 16 120VLCC Volcanic Rocks 16 121BNBR Banbury Formation Basalt of Idaho Group 16 121CGRP Cougar Point Welded Tuff 16 121CLKH Chalk Hills Formation of Idaho Group 16 121DNKY Donkey Fanglomerate 16 121EGRK Eagle Rock Tuff 16 121HGRM Hagerman Lake Beds 16 121IDVD Idavade Volcanics 16 121MSCR Massacre Volcanics 16 121NELY Neeley Formation 16 121PCRK Poison Creek Formation of Idaho Group 16 121PLCN Pliocene Series 16 121PYTT Payette Formation 16 121RCKV Rockland Valley Basalt 16 121SLLK Salt Lake Formation 16 121SRLG Starlight Formation 16 121WLCT Walcott Tuff 16 122CBRV Columbia River Basalt Group 16 122GRMR Germer Tuffaceous Member of Challis Volcanics 16 122LATH Latah Formation 16 122MOCN Miocene Series 16 122OWYH Owyhee Basalt 16 122SCCK Succor Creek Formation 16 122YKFK Yankee Fork Rhyolite Member of Challis Volcanics 16 123CHLS Challis Volcanics 16 123OLGC Oligocene Series 16 124EOCN Eocene Series 16 124WSTC Wasatch Formation 16 125PLCN Paleocene Series 16 200MSZC Mesozoic Erathem 16 210BYVW Bayview Granodiorite 16 210CRCS Cretaceous System 16 210GRCK Granite Creek Granodiorite 16 210GRNC Granitic Rocks 16 210PCKM Packsaddle Mountain Granodiorite 16 210TYGE Tygee Sandstone of Gannett Group 16 211CRCSU Upper Cretaceous Series 16 211FROR Frontier Sandstone 16 211IDAH Idaho Batholith 16 211WAYN Wayan Formation 16 217ASPN Aspen Shale 16 217BCLR Bechler Formation of Gannett Group 16 217BRRV Bear River Formation 16 217CRCSL Lower Cretaceous Series 16 217DRNY Draney Limestone of Gannett Group 16 217EPRM Ephraim Conglomerate of Gannett Group 16 217GNNT Gannett Group 16 217HOMR Homer Limestone Member of Wayan Formation 16 217KOTN Kootenai Formation 16 217PRSN Peterson Limestone of Gannett Group 16 217TMPL Thermopolis Shale 16 220JRSC Jurassic System 16 221JRSCU Upper Jurassic Series 16 221LDCK Leeds Creek Member of Twin Creek Limestone 16 221PRSS Preuss Sandstone or Redbeds 16 221STMP Stump Sandstone 16 221TCRK Twin Creek Limestone or Formation 16 221WLVC Wolverine Canyon Limestone Member of Preuss Sandstone 16 221WNCN Watton Canyon Member of Twin Creek Limestone 16 224BDRG Boundary Ridge Member of Twin Creek Limestone 16 224ELLS Ellis Group 16 224GFCK Giraffe Creek Member of Twin Creek Limestone 16 224JRSCM Middle Jurassic Series 16 224RICH Rich Member of Twin Creek Limestone 16 224SDCK Sliderock Member of Twin Creek Limestone 16 227JRSCL Lower Jurassic Series 16 227NGGT Nugget Sandstone 16 230HGHM Higham Grit 16 230LNES Lanes Tongue of Ankareh Formation 16 230TRSC Triassic System 16 231AKAR Ankareh Formation 16 231DDMN Deadman Limestone 16 231LULL Lucile Slate 16 231SVDV Seven Devils Volcanics 16 231TRSCU Upper Triassic Series 16 231WOOD Wood Shale Tongue of Ankareh Formation 16 234TRSCM Middle Triassic Series 16 237DNDY Dinwoody Formation 16 237FRHL Fort Hall Formation of Thaynes Group 16 237PRNF Portneuf Limestone Member of Thaynes Group 16 237RFRK Ross Fork Limestone of Thaynes Group 16 237TMTY Timothy Sandstone 16 237TRSCL Lower Triassic Series 16 237TYNS Thaynes Limestone, Formation or Group 16 237WDSD Woodside Formation, Siltstone and/or Redbeds 16 300BGCK Berg Creek Amphibolite of Riggins Group 16 300CLSC Clastic Rocks 16 300CRBN Carbonate Rocks 16 300FDCK Fiddle Creek Schist of Riggins Group 16 300LGCK Lightning Creek Schist of Riggins Group 16 300PLZC Paleozoic Erathem 16 300RGNS Riggins Group 16 300RMRG Ramey Ridge Complex 16 300SQCK Squaw Creek Schist of Riggins Group 16 310FRNS Franson Member or Tongue of Park City Formation 16 310GPKC Grandeur Member or Tongue of Park City Formation 16 310MDPK Meade Peak Phosphatic Shale Member or Tongue of Phosphoria Formation 16 310PRKC Park City Formation or Group 16 310PRMN Permian System 16 310PSPR Phosphoria Formation 16 310RPHP Retort Phosphatic Shale Member or Tongue of Phosphoria Formation 16 310RXPP Rex Chert Member of Phosphoria Formation 16 310SDRN Shedhorn Sandstone 16 310WDRV Wood River Formation 16 310WLLS Wells Formation 16 311PRMNU Upper Permian Series 16 317OQRR Oquirrh Group 16 317PRMNL Lower Permian Series 16 320AMSD Amsden Formation 16 320PSLV Pennsylvanian System 16 320QUDR Quadrant Sandstone 16 321PSLVU Upper Pennsylvanian Series 16 324PSLVM Middle Pennsylvanian Series 16 327PSLVL Lower Pennsylvanian Series 16 330BRZR Brazer Limestone or Dolomite 16 330DPCK Deep Creek Formation 16 330MLGN Milligen Formation 16 330MSSP Mississippian System 16 331CFRG Chesterfield Range Group 16 331GRBL Great Blue Limestone or Formation 16 331LLFL Little Flat Formation of Chesterfield Range Group 16 331MDSN Madison Group (Upper and Lower Mississippian) 16 331MNRC Monroe Canyon Limestone of Chesterfield Range Group 16 331MSNC Mission Canyon Limestone 16 331MSSPU Mississippian, Upper 16 331WKNB White Knob Limestone 16 337LDGP Lodgepole Limestone of Madison Group 16 337MSSPL Mississippian, Lower 16 340DVNN Devonian System 16 341DRBY Darby Formation 16 341DVNNU Devonian, Upper 16 341GRDV Grand View Dolomite 16 341TRFK Three Forks Shale 16 344DVNNM Devonian, Middle 16 344JFFR Jefferson Formation 16 347DVNNL Devonian, Lower 16 350SLRN Silurian System 16 350TLCK Trial Creek Formation 16 351SLRNU Silurian, Upper 16 354SLRNM Silurian, Middle 16 357SLRNL Silurian, Lower 16 360ODVC Ordovician System 16 361BGRN Bighorn Dolomite 16 361FSHV Fish Haven Dolomite 16 361ODVCU Ordovician, Upper 16 361SRDM Saturday Mountain Formation 16 364GRDC Garden City Formation 16 364ODVCM Ordovician, Middle 16 367ODVCL Ordovician, Lower 16 367PKPP Phi Kappa Formation 16 367RMSR Ramshorn Slate 16 370BYRS Bayhorse Dolomite 16 370CMBR Cambrian System 16 370GDCK Garden Creek Phyllite 16 371CMBRU Cambrian, Upper 16 371GALN Gallatin Limestone 16 371GRVK Grove Creek Limestone Member of Snowy Range Formation 16 371NUNN Nounan Limestone 16 371PLGM Pilgrim Limestone 16 371SCRL St Charles Limestone 16 371SNRG Snowy Range Formation 16 371WMCK Worm Creek Quartzite Member of St Charles Limestone 16 374BLMG Bloomington Formation 16 374BRGM Brigham Quartzite 16 374CMBRM Cambrian, Middle 16 374FLAD Flathead Limestone 16 374GDCK Gold Creek Quartzite 16 374GRVR Gros Ventre Formation 16 374LKVW Lakeview Limestone 16 374LNGS Langston Limestone 16 374MGHR Meagher Limestone 16 374PARK Park Shale 16 374RNNI Rennie Shale 16 374SPNC Spence Shale Member of Ute Limestone 16 374UTE Ute Limestone 16 377CMBRL Lower Cambrian Series 16 400ABRG Albion Range Group 16 400BELT Belt Series 16 400BLCK Blacktail Formation 16 400BLSB Boehls Butte Formation of Belt Series 16 400BRVB Burke Formation of Ravalli Group of Belt Series 16 400EFRK East Fork Formation 16 400HCKB Huckleberry Formation 16 400HNDM Hyndman Formation 16 400HOOD Hoodoo Quartzite 16 400LEOL Leola Volcanics 16 400LMHI Lemhi Quartzite 16 400MONK Monk Formation 16 400MUTL Mutual Formation 16 400PCMB Precambrian Erathem 16 400PICD Prichard Slate Formation of Belt Series 16 400RVLL Ravalli Group of Belt Series 16 400RVTT Revett Formation of Ravalli Group of Belt Series 16 400SRGS St Regis Formation of Ravalli Group of Belt Series 16 400SWGR Swauger Quartzite 16 400WLLC Wallace Formation 16 400YJCK Yellowjacket Formation 16 BASEMENT Basement 16 BEDROCK Bedrock 17 100CEZC Cenozoic 17 100CNZC Cenozoic Erathem 17 110CLAY Clay (Holocene and/or Pleistocene) 17 110GRAV Gravel (Holocene and/or Pleistocene) 17 110GVCL Gravel and Clay (Holocene and/or Pleistocene) 17 110HRDP Hardpan (Holocene and/or Pleistocene) 17 110MARL Marl (Holocene and/or Pleistocene) 17 110PEAT Peat (Holocene and/or Pleistocene) 17 110QRNR Quaternary System 17 110SANDP Sand (Holocene and/or Pleistocene) 17 110SDCL Sand Clay (Holocene and/or Pleistocene) 17 110SDGVP Sand and Gravel (Holocene and/or Pleistocene) 17 110SGVC Sand, Gravel, and Clay (Holocene and/or Pleistocene) 17 110SILT Silt (Holocene and/or Pleistocene) 17 111ALVM Holocene Alluvium 17 111FILL Fill 17 111HLCN Holocene Series 17 111LKFR Lake Michigan Formation-Lake Forest Member 17 111LKMG Lake Michigan Formation 17 111RVIN Lake Michigan Formation-Ravinia Sand Member 17 111SOIL Soil 17 111WKGN Lake Michigan Formation-Waukegan Member 17 111WNTK Lake Michigan Formation-Winnetka Member 17 112ARGL Winnebago Formation-Argyle Till Member 17 112BLGM Banner Formation-Belgium Member 17 112BNNR Banner Formation 17 112BRRY Glasford Formation-Berry Clay Member 17 112BTSN Wedron Formation-Batestown Till Member 17 112BTVI Henry Formation-Batavia Member 17 112CPRN Winnebago Formation-Capron Till Member 17 112CRMI Equality Formation-Carmi Member 17 112DCML Glasford Formation-Duncan Mills Member 17 112DLVN Wedron Formation-Delavan Till Member 17 112ENON Enion Formation 17 112EQLD Equality Formation-Dolton Member 17 112EQLT Equality Formation 17 112GLBR Wedron Formation-Glenburn Till Member 17 112GLFD Glasford Formation 17 112GRVR Grover Gravel 17 112HEGR Wedron Formation-Haeger Till Member 17 112HGLR Banner Formation-Hegeler Till Member 17 112HGRS Glasford Formation-Hagarstown Member 17 112HLCK Glasford Formation-Hulick Till Member 17 112HLLR Banner Formation-Hillery Till Member 17 112HMCK Henry Formation-Mackinaw Member 17 112HNRY Henry Formation 17 112HRKS Banner Formation-Harkness Silt Member 17 112HRMN Banner Formation-Harmatton Till Member 17 112KLVL Glasford Formation-Kellerville Till Member 17 112LCNR Wedron Formation-Lee Center Till Member 17 112LIRL Banner Formation-Lierle Clay Member 17 112LKMGW Lake Michigan Formation-Wilmette Bed of the Sheboygan Member 17 112LOVD Loveland Silt 17 112MBGV Glasford Formation-Mulberry Grove Silt Member 17 112MCDG Roxana Silt-Mcdonough Loess Member 17 112MDOW Roxana Silt-Meadow Loess Member 17 112MHMT Banner Formation-Mahomet Sand Member 17 112MLDN Wedron Formation-Malden Till Member 17 112MNDS Mounds Gravel 17 112MORT Morton Loess 17 112MRKM Roxana Silt-Markham Member 17 112OGLE Glasford Formation-Ogle Till Member 17 112OKLD Wedron Formation-Oakland Till Member 17 112PDCD Peddicord Formation 17 112PEBG Petersburg Silt 17 112PEOR Peoria Loess 17 112PERL Pearl Formation 17 112PLNO Winnebago Formation-Plano Silt Till Member 17 112PLSC Pleistocene Series 17 112RCLD Richland Loess 17 112RDNR Glasford Formation-Radnor Till Member 17 112ROBN Robein Silt 17 112ROBY Glasford Formation-Roby Silt Member 17 112ROXN Roxana Silt 17 112SBGN Lake Michigan Formation-Sheboygan Member 17 112SHVN Lake Michigan Formation-South Haven Member 17 112SMBR Glasford Formation-Smithboro Till Member 17 112SNDR Wedron Formation-Snider Till Member 17 112SNKT Banner Formation-Sankoty Sand Member 17 112SRLG Glasford Formation-Sterling Till Member 17 112TILL Till 17 112TLTN Banner Formation-Tilton Till Member 17 112TNRF Teneriffe Silt 17 112TSKL Wedron Formation-Tiskilwa Till Member 17 112TULN Glasford Formation-Toulon Member 17 112VNDL Glasford Formation-Vandalia Till Member 17 112WDRN Wedron Formation 17 112WDRNE Wedron Formation-Esmond Till Member 17 112WDRNW Wedron Formation-Wadsworth Till Member 17 112WNBG Winnebago Formation 17 112WNSL Glasford Formation-Winslow Till Member 17 112WSCO Henry Formation-Wasco Member 17 112YKVL Wedron Formation-Yorkville Till Member 17 124WICX Wilcox Formation 17 125CLTN Clayton Formation 17 125PORC Porters Creek Formation 17 211BYLS Baylis Formation 17 211HDLY Baylis Formation-Hadley Gravel Member 17 211KCRK Baylis Formation-Kiser Creek Member 17 211MCNR McNairy Formation 17 211MCNRV McNairy Formation-Levings Member 17 211OLCK Owl Creek Formation 17 211TSCL Tuscaloosa Formation 17 300PLZC Paleozoic Erathem 17 320PELV Pennsylvanian 17 320PSLV Pennsylvanian System 17 322MCLB Mcleansboro Group 17 322MTTN Mattoon Formation of Mcleansboro Group 17 322VGMD Virgilian, Missourian, Desmoinesian Series 17 323BOND Bond Formation of Mcleansboro Group 17 323MDST Modesto Formation of Mcleansboro Group 17 325CBDL Carbondale Formation of Kewanee Group 17 325DSMS Des Moinesian Series 17 325KEWN Kewanee Group 17 325SPON Spoon Formation of Kewanee Group 17 326ABBT Abbott Formation of Mccormick Group 17 326ATKN Atokan Series 17 326MCMK Mccormick Group 17 328CSVL Caseyville Formation of Mccormick Group 17 328MRWN Morrowan Series 17 330MISP Mississippian 17 330MSSP Mississippian System 17 332CDBL Cedar Bluff Group 17 332CSTR Chesterian Series 17 332DBLF Downeys Bluff Limestone of Cedar Bluff Group 17 332GOLC Golconda Group 17 332OKAW Okaw Group 17 332PCRK Paint Creek Group 17 332RENLC Renault Limestone of Cedar Bluff Group 17 332WSBD West Baden Group 17 332YNKN Yankeetown Sandstone 17 333AXVS Aux Vases Sandstone 17 333BRDN Borden Siltstone 17 333BRLG Burlington Limestone 17 333FRGL Fern Glen Formation 17 333FRPN Fort Payne Chert/formation 17 333KKKB Keokuk-Burlington Limestone 17 333KKUK Keokuk Limestone 17 333MPPN Meppen Formation 17 333SGVV Ste. Genevieve Limestone 17 333SLEM Salem Limestone 17 333SNOR Sonora Formation 17 333SPGV Springville Shale 17 333STLS St. Louis Limestone 17 333ULIN Ullin Limestone 17 333VLMR Valmeyeran Series 17 333WARSS Warsaw Shale 17 339CHUT Chouteau Limestone 17 339GLPK 'glen Park' Formation of New Albany Group 17 339HABL Hannibal Shale 17 339KDRK Kinderhookian Series 17 339MCRA Mccraney Limestone of North Hill Group 17 339NALB New Albany Group 17 339NTHL North Hill Group 17 339POPH Prospect Hill Siltstone 17 339SRCV Starrs Cave Limestone of North Hill Group 17 340DEVN Devonian 17 340DVNN Devonian System 17 340DVSL Devonian-Silurian System 17 341DVNNU Devonian, Upper 17 341GACK Grassy Creek Shale of New Albany Group 17 341LOSN Louisiana Limestone 17 341NEAB New Albany Group 17 341SAVR Saverton Shale 17 341SDCK Sweetland Creek Shale of New Albany Group 17 341SLMR Sylamore Sandstone of New Albany Group 17 344CDVL Cedar Valley Limestone 17 344HNTN Hunton Megagroup 17 344NALB Middle Devonian Series of New Albany Group 17 344WPPC Wapsipinicon Limestone 17 347BCKB Backbone Limestone 17 347BILY Bailey Limestone 17 347CLCK Clear Creek Chert 17 347DVVNL Lower Devonian Series 17 347GRKB Grassy Knob Chert 17 350SIDO Silurian Dolomite 17 350SLRN Silurian System 17 355JOLT Joliet Formation 17 355MNSP Moccasin Springs Formation 17 355NIGR Niagaran Series 17 355RCIN Racine Formation 17 358ALXD Alexandrian Series 17 358EDGD Edgewood Formation 17 358KNKK Kankakee Formation 17 360ODVC Ordovician System 17 362BRRD Brainerd Shale of Maquoketa Group 17 362CAPE Cape Limestone 17 362CLRM Clermont Shale Member of Scales Shale 17 362CNCN Cincinnatian Series 17 362ELGN Elgin Shale Member of Scales Shale 17 362FTAK Fort Atkinson Formation 17 362MQKTG Maquoketa Group 17 362NEDA Neda Formation of Maquoketa Group 17 362SCAL Scales Shale 17 362SSOC Scales Shale-Orchard Creek Shale Member 17 362SSTS Scales Shale-Thebes Sandstone Member 17 365ANCE Ancell 17 365ANCL Ancell Group 17 365CMPL Champlainian Series 17 365DECR Decorah Subgroup of Galena Group 17 365DNLT Dunleith Formation of Kimmswick Subgroup 17 365DUBUQ Dubuque Formation 17 365DUCN Dutchtown Limestone 17 365EVRN Everton Dolomite 17 365GALE Galena Group 17 365GBRG Guttenberg Formation of Decorah Subgroup 17 365GDDR Grand Detour Formation of Plattin Subgroup 17 365GLND Glenwood Formation 17 365GLPV Galena-Platteville Groups 17 365JCHM Joachim Dolomite of Ancell Group 17 365KGLK Kings Lake Formation of Decorah Subgroup 17 365KMCK Kimmswick Subgroup of Galena Group 17 365MFLN Mifflin Formation of Plattin Subgroup 17 365NCHS Nachusa Formation of Plattin Subgroup 17 365PECC Pecatonica Formation 17 365PLAV Platteville Group 17 365PLTN Plattin Subgroup of Platteville Group 17 365PRDC Prairie Du Chien Group 17 365QMBM Quimbys Mill Formation of Plattin Subgroup 17 365SPCF Spechts Ferry Formation of Decorah Subgroup 17 365STPR St. Peter Sandstone 17 365WSLK Wise Lake Formation of Kimmswick Subgroup 17 367OVCB Ordovician-Cambrian Systems 17 368CNDN Canadian Series 17 368CRJF Cotter-Jefferson City Dolomites 17 368CTTR Cotter Dolomite 17 368GNTR Gunter Sandstone of Prairie Du Chien Group 17 368JFRC Jefferson City Dolomite 17 368NRCM New Richmond Sandstone 17 368ONOT Oneota Dolomite 17 368PRAD Prairie Du Chien 17 368PWLL Powell Dolomite 17 368RBDX Roubidoux Formation 17 368SAKP Shakopee Dolomite 17 368SMVL Smithville Formation 17 368SMVP Smithville-Powell Formations 17 370CMBR Cambrian System 17 372DRBD Derby-Doerun Member of Franconia Formation 17 372DVIS Davis Member of Franconia Formation 17 372ECLR Eau Claire Formation 17 372ELMR Elmhurst Sandstone Member of Eau Claire Formation 17 372ELMS Elmhurst-Mt. Simon 17 372EMCP Emience-Potosi Formations 17 372EMNC Eminence Formation 17 372EMPT Eminence-Potosi 17 372FRAN Franconia 17 372FRNC Franconia Formation 17 372GLVL Galesville Sandstone 17 372IRGL Ironton-Galesville 17 372IRON Ironton Sandstone 17 372JRDN Jordan Sandstone 17 372LMBD Lombard Dolomite Member of Eau Claire Formation 17 372MMNC Momence Sandstone Member of Eminence Formation 17 372MNSM Mount Simon Sandstone 17 372POTS Potosi Formation 17 372PRVS Proviso Siltstone Member of Eau Claire Formation 17 372SCRX St. Croixan Series 17 400BCPX Basement Complex 17 400PCMB Precambrian Erathem 17 BASEMENT Basement 17 BEDROCK Bedrock 18 100CNZC Cenozoic Erathem 18 110DUNED Dune Deposit 18 110QRNR Quaternary System 18 110TRRC Terrace Deposits 18 110VLTR Valley Train Deposits 18 111ALVM Holocene Alluvium 18 111CLVM Colluvium 18 111GOB Gob Pile 18 111HLCN Holocene Series 18 111RCOV Reclaimed Cast Overburden 18 111UCOV Unreclaimed Cast Overburden 18 112ICCC Ice-Contact Deposits, Pleistocene 18 112LAKE Lake Deposits 18 112LFTT Lafayette Gravel 18 112LOSS Loess 18 112OTSH Outwash 18 112PLSC Pleistocene Series 18 112TILL Till 18 120LFTT Lafayette Gravel 18 120ORVR Ohio River Formation 18 120TRTR Tertiary System 18 300PLZC Paleozoic Erathem 18 320PSLV Pennsylvanian System 18 321BOND Bond Formation 18 321MCLB Mcleansboro Group 18 321MTTN Mattoon Formation 18 321PSLVU Upper Pennsylvanian Series 18 321PTOK Patoka Formation 18 321SLBR Shelburn Formation 18 324BRZL Brazil Formation 18 324CABD Carbondale Group 18 324DGGR Dugger Formation 18 324LNTN Linton Formation 18 324MFLD Mansfield Formation 18 324PRBG Petersburg Formation 18 324PSLVM Middle Pennsylvanian Series 18 324RCCK Raccoon Creek Group 18 324STNN Staunton Formation 18 330MSSP Mississippian System 18 331POLI Paoli Limestone 18 332BECK Beech Creek Limestone - Golconda Formation 18 332BETL Bethel Formation West Baden Group 18 332BFWL Buffalo Wallow Group 18 332BGCF Big Clifty Formation 18 332BRVL Branchville Formation of Buffalo Wallow Group 18 332BVBD Beaver Bend Limestone 18 332CLOR Clore Limestone 18 332CSTR Chesterian Series 18 332DGON Degonia Sandstone 18 332ELWR Elwren Formation 18 332GLND Glen Dean Limestone 18 332HANY Haney Limestone of Stephensport Group 18 332HDBG Hardinsburg Sandstone 18 332KNKD Kinkaid Limestone 18 332MNRD Menard Limestone 18 332PLSN Palestine Sandstone 18 332RLVL Reelsville Limestone 18 332SAMP Sample Formation of West Baden Group 18 332SPPR Stephensport Group 18 332TBPR Tobinsport Formation of Buffalo Wallow Group 18 332TSPG Tar Springs Sandstone 18 332VINN Vienna Limestone 18 332WSBD West Baden Group 18 333BLRV Blue River Group 18 333HDBG Harrodsburg Limestone 18 333MRMC Meramecian Series 18 333SDRS Sanders Group 18 333SGVV Ste. Genevieve Limestone 18 333SLEM Salem Limestone 18 333STLS St. Louis Limestone 18 337MSSPL Mississippian, Lower 18 338BORD Borden Formation 18 338CRWD Carwood Formation 18 338LCSP Locust Point Formation 18 338MLDG Muldraugh Formation 18 338NPVC New Providence Shale 18 338OSGE Osagean Series 18 339KDRK Kinderhookian Series 18 339RCKF Rockford Limestone 18 340DVNN Devonian System 18 340NRVR North Vernon Limestone 18 341DVNNU Devonian, Upper 18 341NALB New Albany Shale 18 344DVNNM Devonian, Middle 18 344GENV Geneva Dolomite 18 344JFVL Jeffersonville Limestone 18 344PNDL Pendleton Sandstone 18 350SLRN Silurian System 18 351SALN Salina Group 18 351SLRNU Silurian, Upper 18 354LSVL Louisville Limestone 18 354SLMN Salamonie Dolomite 18 354SLRNM Silurian, Middle 18 354WBSH Wabash Formation 18 354WLDR Waldron Shale 18 357BFLD Brassfield Limestone 18 357SLRNL Silurian, Lower 18 360ODVC Ordovician System 18 361DLBR Dillsboro Formation 18 361KOPE Kope Formation 18 361ODVCU Ordovician, Upper 18 361SLUD Saluda Member of Whitewater Formation 18 361WTTR Whitewater Formation 18 364JCHM Joachim Dolomite 18 364LXNG Lexington Limestone 18 364ODVCM Ordovician, Middle 18 364STPR St Peter Sandstone 18 364TRNN Trenton Limestone 18 365BKRVG Black River Group 18 367KNOXS Knox Supergroup 18 370CMBR Cambrian System 18 370MSMN Mount Simon Sandstone 18 371ECLR Eau Claire Formation 18 371MSMN Mount Simon Sandstone 18 BASEMENT Basement 18 BEDROCK Bedrock 19 100CNZC Cenozoic Erathem 19 110QRCU Quaternary - Cretaceous Undifferentiated 19 110QRNR Quaternary System 19 111ALVM Holocene Alluvium 19 111BRRV Boyer River Alluvial Aquifer 19 111BRVT Boyer River Terrace Aquifer 19 111ENRV East Nishnabotna River Alluvial Aquifer 19 111HLCN Holocene Series 19 111LOSS Loess 19 111LSRD Little Sioux River Alluvial Aquifer and Dakota Aquifer 19 111LSXR Little Sioux River Alluvial Aquifer 19 111MPRV Maple River Alluvial Aquifer 19 111MRRP Middle Raccoon River Alluvial Aquifer and Pleistocene Aquifer 19 111MRRV Middle Raccoon River Alluvial Aquifer 19 111MRVT Maple River Terrace Aquifer 19 111NRRT North Raccoon River Terrace Aquifer 19 111NRRV North Raccoon River Alluvial Aquifer 19 111SDRV Soldier River Alluvial Aquifer 19 111SRRD South Raccoon River Terrace Aquifer and Dakota Aquifer 19 111SRRV South Raccoon River Alluvial Aquifer 19 111WNRV West Nishnabotna River Alluvial Aquifer 19 112ADZC Adaza Channel Aquifer 19 112AFIG Aftonian Interglacial Deposits 19 112ANCL Anthon Channel Aquifer 19 112BDCL Buried Channel Aquifer 19 112BGLC Bagley Channel Aquifer 19 112BLPC Basal Pleistocene Aquifer 19 112BPDK Basal Pleistocene Aquifer and Dakota Aquifer 19 112BVCL Beaver Channel Aquifer 19 112DNCL Denison Channel Aquifer 19 112DRFT Drift 19 112DSCL Dawson Channel Aquifer 19 112FMCL Fremont Channel Aquifer 19 112HCKC Hardin Creek Channel Aquifer 19 112ILNN Illinoian Deposits 19 112KANS Kansan Glacial Deposits 19 112NEBG Nebraskan Glacial Deposits 19 112OTSH Outwash 19 112PLSC Pleistocene Series 19 112RLCL Ralston Channel Aquifer 19 112SAGM Sangamon Interglacial Deposits 19 112WICG Wisconsin Glacial Deposits 19 112YAMT Yarmouth Interglacial Deposits 19 200MSZC Mesozoic Erathem 19 210CRCS Cretaceous System 19 211CLRD Colorado Group 19 211CRLL Carlile Shale 19 211GRER Greenhorn Limestone 19 211GRRS Graneros Shale 19 217CRCSL Lower Cretaceous Series 19 217DAKT Dakota Group 19 217DKPV Dakota Aquifer and Pennsylvanian Aquifer 19 217DKPZ Dakota-Paleozoic 19 220FDDG Fort Dodge Formation 19 220JRSC Jurassic System 19 300PLZC Paleozoic Erathem 19 320CBUF Carboniferous Undifferentiated 19 320CDVU Carboniferous - Devonian Undifferentiated 19 320PSLV Pennsylvanian System 19 322DGLS Douglas Group 19 322SHWN Shawnee Group 19 322VRGL Virgilian Series 19 322WBNS Wabaunsee Group 19 323KSSC Kansas City Group 19 323LNSG Lansing Group 19 323MSSR Missourian Series 19 323PLSN Pleasanton Group 19 325CHRK Cherokee Group 19 325DSMS Des Moinesian Series 19 325MRMN Marmaton Group 19 330MDVU Mississippian - Devonian Undifferentiated 19 330MSSP Mississippian System 19 333MRMC Meramecian Series 19 333SGVV Ste. Genevieve Limestone 19 333SPRG Spergen Formation 19 333STLS St. Louis Limestone 19 338BRLG Burlington Limestone 19 338CDFK Cedar Fork Member of Burlington Limestone 19 338DBCK Dolbee Creek Member of Burlington Limestone 19 338HGCK Haight Creek Member of Burlington Limestone 19 338KEKK Keokuk Formation 19 338OSGE Osagean Series 19 338WRSW Warsaw Formation 19 339CHPN Chapin Member of Hampton Formation 19 339EGLC Eagle City Member of Hampton Formation 19 339GLMC Gilmore City Limestone 19 339HMPN Hampton Formation 19 339IFLS Iowa Falls Member of Hampton Formation 19 339KDRK Kinderhookian Series 19 339MCCR Mccraney Limestone 19 339MCRK Mayne Creek Member of Hampton Formation 19 339NRHL North Hill Member of Hampton Formation 19 339PPCH Prospect Hill Formation 19 339WSVL Wassonville Member of Hampton Formation 19 340DVNN Devonian System 19 340DVSL Devonian-Silurian System 19 341APLG Aplington Formation 19 341CRGD Cerro Gordo Member of Lime Creek Formation 19 341DVNNU Devonian, Upper 19 341EGRV English River Formation 19 341ERPH English River and Prospect Hill Formations 19 341IDPC Independence Shale 19 341JPHL Juniper Hill Member of Lime Creek Formation 19 341LMCK Lime Creek Formation 19 341MPLM Maple Mill Shale 19 341MSNC Mason City Member of Shell Rock Formation 19 341NORA Nora Member of Shell Rock Formation 19 341OWEN Owen Member of Shell Rock Formation 19 341RKGV Rock Grove Member of Shell Rock Formation 19 341SFLD Sheffield Formation 19 341SLCK Shell Rock Formation 19 341YSPG Yellow Springs Group 19 344BRRM Bertram Member of Wapsipinicon Formation 19 344CDVL Cedar Valley Limestone 19 344CGGN Coggon Member of Wapsipinicon Formation 19 344CLVL Coralville Member of Cedar Valley Formation 19 344DVNNM Devonian, Middle 19 344DVPR Davenport Member of Wapsipinicon Formation 19 344KNWD Kenwood Member of Wapsipinicon Formation 19 344OTIS Otis Member of Wapsipinicon Formation 19 344RPID Rapid Member of Cedar Valley Formation 19 344SOLN Solon Member of Cedar Valley Formation 19 344SPGV Spring Grove Member of Wapsipinicon Limestone 19 344WAPC Wapsipinicon Formation 19 347DVNNL Devonian, Lower 19 347DVSL Devonian-Silurian Systems 19 347LPRC La Porte City Chert 19 350SLRN Silurian System 19 355GOWRD Gower Dolomite 19 355HOPK Hopkinton Dolomite 19 355NIGR Niagaran Series 19 358ALXD Alexandrian Series 19 358EDGD Edgewood Formation 19 358KNKK Kankakee Formation 19 360ODVC Ordovician System 19 360OVCB Ordovician-Cambrian Systems 19 361BRRD Brainerd Member of Maquoketa Formation 19 361CLRM Clermont Shale Member of Maquoketa Formation 19 361ELGN Elgin Member of Maquoketa Formation 19 361FRAK Fort Atkinson Member of Maquoketa Formation 19 361MAQK Maquoketa Formation 19 361NEDA Neda Member of Maquoketa Formation 19 361ODVCU Ordovician, Upper 19 364DCPV Decorah-Platteville Formations 19 364DCRH Decorah Formation 19 364DUBQ Dubuque Member of Galena Formation 19 364GALN Galena Formation 19 364GBRG Guttenberg Member of Decorah Formation 19 364GLNDH Glenwood Shale Member of Platteville Formation 19 364GLNDS Glenwood Sandstone Member of Platteville Formation 19 364ION Ion Member of Decorah Formation 19 364MCGG Mcgregor Member of Platteville Formation 19 364ODVCM Ordovician, Middle 19 364PCNC Pecatonica Member of Platteville Formation 19 364PLVL Platteville Formation 19 364PRSR Prosser Member of Galena Formation 19 364SPCF Spechts Ferry Member of Decorah Formation 19 364SRVL Stewartville Member of Galena Formation 19 364STPR St Peter Sandstone 19 367ODVCL Ordovician, Lower 19 367ONET Oneota Member of Prairie Du Chien Formation 19 367OVCB Ordovician-Cambrian Systems 19 367PRDC Prairie Du Chien Formation 19 367RTVL Root Valley Member of Prairie Du Chien Formation 19 367WILR Willow River Member of Prairie Du Chien Formation 19 370CMBR Cambrian System 19 371BDAX Bad Axe Member of Franconia Sandstone 19 371CMBRU Cambrian, Upper 19 371DRBC Dresbach Group 19 371ECLR Eau Claire Formation 19 371FRNC Franconia Sandstone 19 371GDNG Goodenough Member of Franconia Sandstone 19 371GLVL Galesville Sandstone 19 371HDSN Hudson Member of Franconia Sandstone 19 371IOGV Ironton Sandstone Member of Franconia Ss.-Galesville Ss. 19 371IRNN Ironton Member of Franconia Sandstone 19 371JRDN Jordan Sandstone 19 371MSMN Mount Simon Sandstone 19 371SLRC St Lawrence Formation 19 371TEMP Trempealeau Group 19 400IGNS Precambrian Igneous Rocks 19 400MMPC Precambrian Metamorphic Rocks 19 400PCMB Precambrian Erathem 19 400SDMR Precambrian Sedimentary Rocks 19 400SOUX Sioux Quartzite 19 BASEMENT Basement 19 BEDROCK Bedrock 20 100CNZC Cenozoic Erathem 20 110ALVM Quaternary Alluvium 20 110QRNR Quaternary System 20 110QRRT Quaternary-Tertiary Systems 20 111CLVM Colluvium 20 111HLCN Holocene Series 20 111RCNT Recent Stage 20 112ACSN Atchison Formation 20 112AFNN Aftonian Stage 20 112AFTN Afton Soil 20 112ALFV Eolian-Fluvial Deposits 20 112ALVM Alluvium 20 112ANGL Angell Member of Ballard Formation 20 112ATTR Atwater Member of Crooked Creek Formation 20 112BGNL Bignell Formation 20 112BKCK Buckcreek Terrace Deposits 20 112BLRD Ballard Formation 20 112BRDY Brady Soil 20 112CDBF Cedar Bluffs Till 20 112CKCK Crooked Creek Formation 20 112CRET Crete Formation 20 112CRYN Caryan Sandstone 20 112DRFT Drift 20 112DVDC David City Formation 20 112EOLN Eolian Deposits 20 112FLRN Fullerton Formation 20 112FLVL Fluvial Deposits 20 112GDID Grand Island Formation 20 112HLDG Holdrege Formation 20 112ILNN Illinoian Deposits 20 112IOWN Iowan Stage 20 112IWPN Iowa Point Till 20 112KANSS Kansan Stage 20 112KGFV Kansan Glaciofluvial Deposits 20 112KGSD Kingsdown Formation 20 112KSTL Kansan Till 20 112LOSS Loess 20 112LVLD Loveland Formation 20 112MCPR Mcpherson Formation 20 112MEDE Meade Group 20 112MSLR Missler Member of Ballard Formation 20 112NBFV Nebraskan Fluvioglacial Deposits 20 112NBRK Nebraskan Deposits 20 112NCKR Nickerson Till 20 112NOVL Nortonville Clay 20 112NWMN Newman Terrace Deposits 20 112OTSH Outwash 20 112PCPC Pleistocene-Pliocene Series 20 112PLSC Pleistocene Series 20 112PLSCL Pleistocene Series, Lower 20 112PLSCU Pleistocene Series, Upper 20 112PORI Peoria Formation 20 112PRLT Pearlette Ash Bed 20 112RCIS Recent-Illinoisan Stages 20 112RGLT Regolith, Unmapped 20 112SAPP Sappa Formation 20 112SMPA Stump Arroyo Member of Crooked Creek Formation 20 112SNBR Sanborn Group 20 112SNGM Sangamon Soil 20 112TILL Till 20 112TRRC Terrace Deposits 20 112TZLN Tazewellian Substage 20 112UPCH Upland Chert Grav 20 112VNHM Vanhem Formation 20 112WSCS Wisconsinan Stage 20 112YNBK Yarmouthian-Nebraskan Stages 20 112YRMN Yarmouthian Stage 20 112YRMT Yarmouth Soil 20 120TRTR Tertiary System 20 121ASHL Ash Hollow Formation 20 121BLNC Blanco Formation 20 121CLVR Calvert Ash Bed of Valentine Member of Ogallala Formation 20 121DLMR Delmore Formation 20 121DLVL Dellvale Ash Bed of Ash Hollow Member of Ogallala Formation 20 121FWLC Fort Wallace Ash Bed of Ash Hollow Member of Ogallala Formation 20 121GLMC Gilman Canyon Formation 20 121KMBL Kimball Member of Ogallala Formation 20 121LVRN Laverne Formation 20 121NGCC Neogene-Cretaceous Systems 20 121NOGN Neogene System 20 121OCJT Ogallala-Cheyenne-Jurassic-Triassic Formations and Systems 20 121ODCJ Ogallala-Dakota-Cheyenne-Jurassic-Triassic Formations and Systems 20 121ODKC Ogallala-Dakota-Cheyenne Formations 20 121OGDK Ogallala-Dakota Formations 20 121OGLC Ogallala-Cheyenne Formations 20 121OGLL Ogallala Formation 20 121PCCN Pliocene Series 20 121REGR Reager Ash Bed of Ash Hollow Member of Ogallala Formation 20 121RLNS Rawlins Ash Bed of Ash Hollow Member of Ogallala Formation 20 121RMVL Reamsville Ash Bed of Ash Hollow Member of Ogallala Formation 20 121RXRD Rexroad Formation 20 121VALN Valentine Member of Ogallala Formation 20 121XI Xi Member of Rexroad Formation 20 200MSZC Mesozoic Erathem 20 210CRCS Cretaceous System 20 210DKOT Dakota Sandstone or Formation or Group 20 211BCID Beecher Island Shale Member of Pierre Shale 20 211BGCK Bridge Creek Limestone Member of Greenhorn Limestone 20 211BLHL Blue Hill Shale Member of Carlile Shale 20 211CDLL Codell Sandstone Member of Carlile Shale 20 211CLRD Colorado Group 20 211CRCSU Upper Cretaceous Series 20 211CRLL Carlile Shale 20 211FCPS Fencepost Limestone Bed of Pfeiffer Shale Member of Greehorn Limestone 20 211FRHS Fort Hays Limestone Member of Niobrara Formation 20 211FRPR Fairport Chalky Shale Member of Carlile Shale 20 211GRER Greenhorn Limestone 20 211GRRS Graneros Shale 20 211HPDP Hills Pond Peridot 20 211HRLD Hartland Shale Member of Greenhorn Limestone 20 211JTMR Jetmore Chalk Member of Greenhorn Limestone 20 211LKCK Lake Creek Shale Member of Pierre Shale 20 211LNCL Lincoln Member of Greenhorn Limestone 20 211MNTN Montana Group 20 211NBRR Niobrara Formation 20 211PFFR Pfeifer Shale Member of Greenhorn Limestone 20 211PIRR Pierre Shale 20 211SLGR Salt Grass Shale Member of Pierre Shale 20 211SMKH Smoky Hill Chalk Member of Niobrara Formation 20 211SSPG Sharon Springs Member of Pierre Shale 20 211WSKN Weskan Shale Member of Pierre Shale 20 212GLFN Gulfian Series 20 217CCKM Cockrum Sandstone 20 217CENN Cheyenne Sandstone 20 217CMPN Champion Shell Bed of Kiowa Shale 20 217CRCSL Lower Cretaceous Series 20 217CRUS Cruise Sandstone Member of Omadi Formation 20 217GRLY Gurley Sandstone Member of Omadi Formation 20 217HNSM Huntsman Shale Member of Omadi Formation 20 217JNSN Janssen Clay Member of Dakota Formation 20 217KIOW Kiowa Shale 20 217OMDI Omadi Formation 20 217TRCT Terra Cotta Clay Member of Dakota Formation 20 218CMNC Comanchean Series 20 220JCTC Jurassic-Triassic Systems 20 220JRSC Jurassic System 20 221JRSCU Upper Jurassic Series 20 221MRSN Morrison Formation 20 230TRSC Triassic System 20 231DCKM Dockum Group 20 231TRSCU Upper Triassic Series 20 300PLZC Paleozoic Erathem 20 310JSVL Janesville Shale 20 310MFLD Matfield Shale 20 310NLNS Nolans Limestone 20 310NNSC Ninnescah Shale 20 310ONAG Onaga Shale 20 310PRMN Permian System 20 310QRRM Quartermaster Formation 20 310WLNG Wellington Formation 20 310WTRS Whitehorse Sandstone or Group 20 311BGBS Big Basin Formation 20 311DCRK Day Creek Dolomite 20 311KIGR Kiger Shale Member of Whitehorse Formation 20 311PRMNU Upper Permian Series 20 311RLCK Relay Creek Dolomite Member of Whitehorse Formation 20 311TLOG Taloga Formation 20 313BLIN Blaine Gypsum 20 313DGCK Dog Creek Shale 20 313FLRP Flowerpot Shale 20 313GDLP Guadalupian Series 20 313MRLW Marlow Formation 20 317ADMR Admire Group 20 317AMRC Americus Limestone Member of Foraker Limestone 20 317ASPL Aspinwall Limestone Member of Onaga Shale 20 317BDER Bader Limestone 20 317BNNT Bennett Shale Member of Red Eagle Limestone 20 317BRNS Barneston Limestone 20 317BTTI Beattie Limestone 20 317BURR Burr Limestone Member of Grenola Limestone 20 317BUSP Blue Springs Shale Member of Matfield Shale 20 317CFLD Crisfield Sandstone Bed of Salt Plain Formation 20 317CKSK Chikaskia Sandstone Member of Harper Sandstone 20 317CMRN Cimarronian Stage 20 317CRLN Carlton Limestone Member of Wellington Formation 20 317CRSL Cresswell Limestone Member of Winfield Limestone 20 317CRUS Crouse Limestone 20 317CTTN Cottonwood Limestone Member of Beattie Limestone 20 317DOYL Doyle Shale 20 317EISS Eiss Limestone Member of Bader Limestone 20 317ELCK Easly Creek Shale 20 317FLRC Florence Limestone Member of Barnestown Formation 20 317FLRN Florena Shale Member of Beattie Limestone 20 317FLSC Falls City Limestone 20 317FNSN Funston Limestone 20 317FRRL Fort Riley Limestone Member of Barneston Limestone 20 317FVPN Five Point Limestone Member of Janesville Shale 20 317GAGE Gage Shale Member of Doyle Shale 20 317GLCK Glenrock Limestone Member of Red Eagle Limestone 20 317GRNT Grant Shale Member of Winfield Limestone 20 317GRYN Gearyan Stage 20 317HCCK Houchen Creek Limestone Member 20 317HCNS Hutchinson Salt Member of Wellington Formation 20 317HGCK Hughes Creek Shale Member of Foraker Limestone 20 317HLBG Hollenberg Limestone Member of Wellington Formation 20 317HLMV Holmesville Shale Member of Doyle Shale 20 317HMLN Hamlin Shale Member of Janesville Shale 20 317HOSR Hooser Shale Member of Bader Limestone 20 317HOWE Howe Limestone Member of Red Eagle Limestone 20 317HRNG Herington Limestone Member of Nolan Limestone 20 317HRPR Harper Sandstone 20 317HSKW Haskew Gypsum Member of Blaine Gypsum 20 317HVVL Havensville Shale Member of Wreford Limestone 20 317HXBY Hawxby Shale Member of Onaga Shale 20 317IDCV Indian Cave Sandstone Bed of Towle Shale Member of Onaga Shale 20 317KNNY Kinney Limestone Member of Matfield Shale 20 317KRDR Krider Limestone Member Nolans Limestone 20 317LGCK Long Creek Limestone Member of Foraker Limestone 20 317LGON Legion Shale Member of Grenola Limestone 20 317MCLG Medicine Lodge Gypsum Member of Blaine Gypsum 20 317MDBG Middleburg Limestone Member of Bader Limestone 20 317MILN Milan Dolomite Member of Wellington Formation 20 317MRRL Morrill Limestone Member of Beattie Limestone 20 317NEVA Neva Limestone Member of Grenola Limestone 20 317NPPL Nippewalla Group 20 317NSCG Nescatunga Gypsum Member of Blaine Gypsum 20 317OAKS Oaks Shale Bed of Hamlin Member of Janesville Shale 20 317OKET Oketa Shale Member of Barneston Limestone 20 317PDCK Paddock Shale Member of Nolans Limestone 20 317PMPV Lower Permian-Upper Pennsylvanian Series 20 317PRMNL Lower Permian Series 20 317RNMD Runnymede Sandstone Member of Ninnescah Shale 20 317SCRL Stone Corral Formation 20 317SCRR Schroyer Limestone Member of Wreford Limestone 20 317SHMR Shimer Gypsum Member of Blaine Gypsum 20 317SLMP Salem Point Shale Member of Grenola Limestone 20 317SLRD Sallyards Limestone Member of Grenola Limestone 20 317SMNR Sumner Group 20 317SPSR Speiser Shale 20 317SRNS Stearns Shale 20 317STIN Stine Shale Bed of Hamlin Shale Member of Janesville Shale 20 317STVL Stovall Limestone Member of Winfield Limestone 20 317TOWL Towle Shale Member of Onaga Shale 20 317TRML Threemile Limestone Member of Wreford Limestone 20 317TWND Towanda Limestone Member of Doyle Shale 20 317WBRC West Branch Shale Member of Janesville Shale 20 317WFLD Winfield Limestone 20 317WRFD Wreford Limestone 20 317WYMR Wymore Shale Member of Matfield Shale 20 318CEDH Cedar Hills Sandstone 20 318KNGM Kingman Sandstone Member of Harper Sandstone 20 318LNRD Leonardian Series 20 318SLPL Salt Plain Formation 20 319BRPD Blue Rapids Shale 20 319CCGV Council Grove Group 20 319CHSE Chase Group 20 319EKDG Eskridge Shale 20 319FRCK Foraker Limestone 20 319GRNL Grenola Limestone 20 319JNSN Johnson Shale 20 319ODEL Odell Shale 20 319RDEG Red Eagle Limestone 20 319ROCA Roca Shale 20 319WFMP Wolfcampian Series 20 320GRWS Granite Wash 20 320PSLV Pennsylvanian System 20 320PVCB Pennsylvanian-Cambrian Systems 20 321AMZN Amazonia Limestone Member of Lawrence Formation 20 321ARDE Aarde Shale Member of Howard Limestone 20 321ARGN Argentine Limestone Member of Wyandotte Limestone 20 321AVOC Avoca Limestone Member of Lecompton Limestone 20 321BCCK Bachelor Creek Limestone Member of Howard Limestone 20 321BEIL Beil Limestone Member of Lecompton Limestone 20 321BERN Bern Limestone 20 321BFLS Bethany Falls Limestone Member Swope Formation 20 321BGSP Big Springs Limestone Member of Lecompton Limestone 20 321BLCK Block Limestone Member of Cherryvale Shale 20 321BLGM Burlingame Limestone Member of Bern Limestone 20 321BRVL Brownville Limestone Member of Wood Siding Formation 20 321CACK Clay Creek Limestone Member of Kanwaka Shale 20 321CDVL Cedar Vale Shale Member of Scranton Shale 20 321CFVL Coffeyville Formation 20 321CGGV Cottage Grove Sandstone of Chanute Shale 20 321CHNT Chanute Shale 20 321CHRC Church Limestone Member of Howard Limestone 20 321CMNC Cement City Limestone Member of Drum Limestone 20 321CNVL Canville Limestone Member of Dennis Limestone 20 321CPCK Captain Creek Limestone Member of Stanton Limestone 20 321CRBC Corbin City Limestone Member of Drum Limestone 20 321CRVL Cherryvale Shale 20 321CRZN Curzon Limestone Member of Topeka Limestone 20 321CRZR Critzer Limestone Member of Hertha Limestone 20 321DDCK Dodds Creek Sandstone Member of Galesburg Shale 20 321DEWY Dewey Limestone Member of Drum Limestone 20 321DNPN Doniphan Shale Member of Lecompton Limestone 20 321DOVR Dover Limestone Member of Stotler Limestone 20 321DRY Dry Shale Member of Stotler Limestone 20 321DUBS Du Bois Limestone Member of Topeka Limestone 20 321ELMN Elmont Limestone Member of Emporia Limestone 20 321ELMO Elmo Coal Bed of Cedar Vale Shale Member of Scranton Shale 20 321EUDR Eudora Shale Member of Stanton Limestone 20 321EVCK Ervine Creek Limestone Member of Deer Creek Limestone 20 321FCCK French Creek Shale Member of Root Shale 20 321FRDC Friedrich Shale Member of Root Shale 20 321FRLY Farley Limestone Member of Wyandotte Limestone 20 321FRSB Frisbie Limestone Member Wyandotte Limestone 20 321GRDV Grandhaven Limestone Member of Stotler Limestone 20 321GRRS Grayhorse Limestone Member of Wood Siding Formation 20 321HBNR Heebner Shale Member of Oread Limestone 20 321HKCK Hickory Creek Shale Member of Plattsburg Limestone 20 321HMDR Heumader Shale Member of Oread Limestone 20 321HOLT Holt Shale Member of Topeka Limestone 20 321HPCK Hushpuckney Shale Member of Swope Limestone 20 321HPHL Happy Hollow Limestone Member of Scranton Shale 20 321HPLR Hepler Sandstone Member of Seminole Formation 20 321HRFD Hartford Limestone Member of Topeka Limestone 20 321HSKL Haskell Limestone Member of Lawrence Formation 20 321HVVL Harveyville Shale Member of Emporia Limestone 20 321IDCK Island Creek Shale Member of Wyandotte Limestone 20 321IPNT Iowa Point Shale Member of Topeka Limestone 20 321IRLD Ireland Sandstone Member of Lawrence Shale 20 321JKPK Jackson Park Shale Member of Kanwahka Shale 20 321JMCK Jim Creek Limestone Member of Root Shale 20 321JNSP Jones Point Shale Member of Topeka Limestone 20 321KGHL King Hill Shale Member of Lecompton Limestone 20 321KNBN Knobtown Sandstone 20 321KRFD Kereford Limestone Member of Oread Limestone 20 321LBOK Larsh-Burr Oak Shale Members of Deer Creek Limestone 20 321LBSP Lane-Bonner Springs Shale 20 321LNGD Langdon Shale 20 321LVLS Lane-Vilas Shales 20 321LVNR Leavenworth Limestone Member of Oread Limestone 20 321MCCK Muncie Creek Shale Member of Iola Limestone 20 321MDCK Middle Creek Limestone Member of Swope Limestone 20 321MNDC Mound City Shale Member of Hertha Limestone 20 321MPLH Maple Hill Limestone Member of Zeandale Limestone 20 321MRRM Merriam Limestone Member of Plattsburg Limestone 20 321MSRN Missourian Series 20 321NBKC Nebraska City Limestone Member of Wood Siding Formation 20 321NDCL Nodaway Coal Bed of Aarde Shale Member of Howard Limestone 20 321NEMH Nemaha Subgroup 20 321OSKL Oskaloosa Shale Member of Deer Creek Limestone 20 321OZWK Ozawkie Limestone Member of Deer Creek Limestone 20 321PAOL Paola Limestone Member of Iola Limestone 20 321PLMB Plumb Shale Member of Wood Siding Formation 20 321POCK Pony Creek Shale Member of Wood Siding Formation 20 321PRSP Pierson Point Shale 20 321PSLVU Upper Pennsylvanian Series 20 321QNDR Quindaro Shale Member of Wyandotte Limestone 20 321QNHL Queen Hill Shale Member of Lecompton Limestone 20 321RBNS Robbins Shale Member of Lawrence Shale 20 321RDNG Reading Limestone Member of Emporia Limestone 20 321RKBF Rock Bluff Limestone Member of Deer Creek Limestone 20 321RKLK Rock Lake Shale Member of Stanton Limestone 20 321RULO Rulo Limestone Member of Scranton Shale 20 321RYTN Raytown Limestone Member of Iola Limestone 20 321SBLYL Lower Sibley Coal Bed of Tonganoxie Sandstone Member of Stranger Fm 20 321SBLYU Upper Sibley Coal Bed of Tonganoxie Sandstone Member of Stranger Fm 20 321SBND South Bend Limestone Member of Stanton Limestone 20 321SDCK Soldier Creek Shale Member of Bern Limestone 20 321SDVL Snyderville Shale Member of Oread Limestone 20 321SLDN Sheldon Limestone Member of Topeka Limestone 20 321SMND South Mound Shale Member of Seminole Formation 20 321SNBR Sniabar Limestone Member of Hertha Limestone 20 321SPGH Spring Hill Limestone Member of Plattsburg Limestone 20 321SRMN Stormont Limestone Bed of Wamego Shale Member of Zeandale Limestone 20 321STLL Stull Shale Member of Kanwaka Shale 20 321STNR Stoner Limestone Member of Stanton Limestone 20 321STRK Stark Shale Member of Dennis Limestone 20 321SVLK Silver Lake Shale Member of Scranton Shale 20 321TCKT Tacket Formation 20 321THYR Thayer Coal Bed of Unnamed Shale Member of Noxie Sandstone Member 20 321TNCK Turner Creek Shale Member of Topeka Limestone 20 321TNGX Tonganoxie Sandstone Member of Stranger Formation 20 321TRKO Tarkio Limestone Member of Zeandale Limestone 20 321TRNT Toronto Limestone Member of Oread Limestone 20 321UTOP Utopia Limestone Member of Howard Limestone 20 321VNLD Vinland Shale Member of Stranger Formation 20 321WCLD Whtie Cloud Shale Member of Scranton Shale 20 321WDSG Wood Siding Formation 20 321WEA Wea Shale Member of Cherryvale Shale 20 321WKRS Wakarusa Limestone Member of Bern Limestone 20 321WMBG Williamsburg Coal Bed of Amazonia Limestone Member of Lawrence Fm 20 321WMGO Wamego Shale Member of Zeandale Limestone 20 321WNRS Winterset Limestone Member of Dennis Limestone 20 321WQVR Wea-Quivira Shale Members of Cherryvale Shale 20 321WRVL Westerville Limestone Member of Cherryville Shale 20 321WSPL Westphalia Limestone Member of Stranger Formation 20 321WSTN Weston Shale Member of Stranger Formation 20 321WTHN Wathena Shale Member of Oread Limestone 20 321WZLR Winzeler Shale Member of Howard Limestone 20 322ABRN Auburn Shale 20 322CLHN Calhoun Shale 20 322DGLS Douglas Group 20 322DRCK Deer Creek Limestone 20 322ELGN Elgin Sandstone Member of Vamoosa Formation 20 322EMPR Emporia Limestone 20 322HWRD Howard Limestone 20 322KNWK Kanwaka Shale 20 322LCMP Lecompton Limestone 20 322LRNC Lawrence Shale 20 322ORED Oread Limestone 20 322PLBR Pillsbury Shale 20 322PLSM Plattsmouth Limestone Member of Oread Limestone 20 322RCRD Richardson Subgroup 20 322ROOT Root Shale 20 322SCFX Sacfox Subgroup 20 322SCRN Scranton Shale 20 322SHWN Shawnee Group 20 322SPGB Spring Branch Limestone Member of Lecompton Limestone 20 322SRGR Stranger Formation 20 322STLR Stotler Limestone 20 322SVRY Severy Shale 20 322TCMS Tecumseh Shale 20 322TOPK Topeka Limestone 20 322VIGL Virgilian Stage 20 322WBNS Wabaunsee Group 20 322WLRD Willard Shale 20 322ZNDL Zeandale Limestone 20 323BRNS Bronson Subgroup 20 323BSPG Bonner Springs Shale 20 323CCKB Checkerboard Limestone 20 323DNNS Dennis Limestone 20 323DRUM Drum Limestone 20 323FNTN Fontana Shale Member of Cherryvale Shale 20 323GLBG Galesburg Shale 20 323HRTH Hertha Limestone 20 323IATN Iatan Limestone 20 323IOLA Iola Limestone 20 323KSSC Kansas City Group 20 323LANE Lane Shale 20 323LDOR Ladore Shale 20 323LINN Linn Subgroup 20 323LNSG Lansing Group 20 323NOXI Noxie Sandstone Member of Chanute Shale 20 323PEDE Pedee Group 20 323PLBG Plattsburg Limestone 20 323PLSN Pleasanton Group 20 323QUVR Quivira Shale Member of Cherryvale Shale 20 323SMNL Seminole Formation 20 323STNN Stanton Limestone 20 323SWOP Swope Limestone 20 323VILS Vilas Shale 20 323WNDT Wyandotte Limestone 20 323ZARH Zarah Subgroup 20 324AKBD Atokan (Bendian) Stage 20 324ALMN Altamont Limestone 20 324AMRT Amoret Limestone Member of Altamont Limestone 20 324ANNA Anna Shale Member of Pawnee Limestone 20 324BRKA Broken Arrow Coal 20 324BVIR Bevier Coal Bed of Cabanics Formation 20 324BZHL Breezy Hill Limestone Member of Cabaniss Formation 20 324CBNS Cabaniss Formation 20 324CHAT Chat 20 324CRBG Croweburg Coal Bed of Cabaniss Formation 20 324DRYD Drywood Coal Bed of Krebs Formation 20 324DSMS Desmoinesian Stage 20 324EGLV Englevale Sandstone Member of Labette Shale 20 324EXCL Excello Shale 20 324FLMG Fleming Coal Bed of Cabaniss Formation 20 324HLDV Holdenville Shale 20 324HOUX Houx Limestone Bed of Little Osage Shale Member of Fort Scott Ls 20 324IDBR Idenbro Limestone Member of Lenapah Limestone 20 324IRPS Iron Post Coal 20 324KNFN Knifeton Coal 20 324LBRD Laberdie Limestone Member of Pawnee Limestone 20 324LKNS Lake Neosho Shale Member of Altamount Limestone 20 324MCKS Myrick Station Limestone Member of Pawnee Limestone 20 324MCRK Mine Creek Shale Member of Pawnee Limestone 20 324MLBR Mulberry Coal Bed of Bandera Shale 20 324MLKY Mulky Coal Bed of Cabaniss Formation 20 324MNRL Mineral Coal Bed of Cabaniss Formation 20 324NRFL Norfleet Limestone Member of Lenapah Limestone 20 324NTRL Neutral Coal Bed of Krebs Formation 20 324PRFM Perry Farm Shale Member of Lenapah Limestone 20 324PSLVM Middle Pennsylvanian Series 20 324ROWE Rowe Coal Bed of Krebs Formation 20 324RVRN Riverton Coal Bed of Krebs Formation 20 324SCMN Scammon Coal Bed of Cabaniss Formation 20 324SMMT Summit Coal Bed of Little Osage Shale Member of Fort Scott Limestone 20 324STIC Stice Coal 20 324TEBO Tebo Coal Bed of Cabaniss Formation 20 324TINA Tina Limestone Member of Altamount Limestone 20 324TIWH Tiawah Limestone Bed of Cabaniss Formation 20 324WHLR Wheeler Coal of Verdigris Formation 20 324WLRJ Walt Johnson Sandstone Member of Nowata Shale 20 324WPBG Wier Pittsburg Coal Bed of Cabaniss Formation 20 324WRBG Warrensburg Sandstone 20 324WRLD Worland Limestone Member of Altamount Limestone 20 324WRNR Warner Sandstone Member of Krebs Formation 20 325ALMN Altamont Limestone 20 325BDRQ Bandera Quarry Sandstone Member of Bandera Shale 20 325BJCK Bluejacket Sandstone Member of Krebs Formation 20 325BKJC Blackjack Creek Limestone Member of Fort Scott Limestone 20 325BNDR Bandera Shale 20 325CELS Chelsea Sandstone Member of Cabaniss Formation 20 325CHRK Cherokee Group 20 325DSMS Des Moinesian Series 20 325FRSC Fort Scott Limestone 20 325HGVL Higginsville Limestone Member of Fort Scott Limestone 20 325HLDV Holdenville Shale 20 325KREB Krebs Formation 20 325LBTT Labette Shale 20 325LLOG Little Osage Member of Fort Scott Limestone 20 325LNPH Lenapah Limestone 20 325MRMN Marmaton Group 20 325NOWT Nowata Shale 20 325PWNE Pawnee Limestone 20 325SVLL Seville Limestone Member of Krebs Formation 20 325VRDG Verdigris Limestone Member of Cabaniss Formation 20 325WRNR Warner Sandstone Member of Krebs Formation 20 326ATKN Atokan Series 20 327KRNY Kearney Formation 20 327MRRN Morrowan Stage 20 327PSLVL Lower Pennsylvanian Series 20 327PVMP Pennsylvanian-Mississippian Series 20 328MRRN Morrowan Series 20 330CTNG Chattanooga Shale 20 330MSSP Mississippian System 20 331CWLY Cowley Formation 20 331MSSPU Mississippian, Upper 20 332CRSN Chesteran Stage 20 332CSRN Chesterian Series 20 333MRMC Meramecian Series 20 333SGVV Ste. Genevieve Limestone 20 333SLEM Salem Limestone 20 333STLS St. Louis Limestone 20 333WARS Warsaw Limestone 20 337BOIC Boice Shale 20 337CHUT Chouteau Limestone 20 337CMPN Compton Limestone 20 337MPDV Mississippian-Devonian System 20 337MSSPL Mississippian, Lower 20 337SDLI Sedalia Dolomite 20 337STJO St Joe Limestone Member of Boone Formation 20 338BRLG Burlington Limestone 20 338FRGL Fern Glen Limestone 20 338KKUK Keokuk Limestone 20 338OSGE Osagean Series 20 338OSGEO Osagean Stage 20 338RSPG Reeds Spring Limestone 20 339GLMC Gilmore City Limestone 20 339KNDR Kinderhookian Series 20 339NRTV Northview Shale 20 340DVNN Devonian System 20 340HNTN Hunton Group 20 340MSNR Misener Sandstone Member of Chattanooga Shale 20 344DVNNM Devonian, Middle 20 344DVSL Middle Devonian-Lower Silurian Series 20 347DVSL Devonian-Silurian Systems 20 350SLRN Silurian System 20 357CMNL Chimney Hill Dolomite 20 357SLRNL Silurian, Lower 20 360ODVC Ordovician System 20 361MQKT Maquoketa Shale 20 361ODVCU Ordovician, Upper 20 361VKMK Viola Limestone 20 364ODVCM Ordovician, Middle 20 364PLVL Platteville Formation 20 364SMPS Simpson Group 20 364STPR St Peter Sandstone 20 367ABCK Arbuckle Group 20 367CRJF Cotter-Jefferson City Dolomite 20 367CTTR Cotter Dolomite 20 367GNTR Gunter Sandstone Member of Gasconade Dolomite 20 367GSCD Gasconade Dolomite 20 367ODVCL Ordovician, Lower 20 367OVCB Ordovician-Cambrian Systems 20 367RBDX Roubidoux Formation 20 367VNBR Van Buren Formation 20 368JFRC Jefferson City Dolomite 20 370CMBR Cambrian System 20 371BNTR Bonneterre Dolomite 20 371CMBRU Cambrian, Upper 20 371EMNC Eminence Dolomite 20 371HCRK Honey Creek Limestone 20 371LMRG Lamotte-Reagan Sandstone 20 371LMTT Lamotte Sandstone 20 371REGN Reagan Sandstone 20 400PCMB Precambrian Erathem 20 400RICE Rice Formation 20 BASEMENT Basement 20 BEDROCK Bedrock 21 100CNZC Cenozoic Erathem 21 110QRNR Quaternary System 21 111ALVM Holocene Alluvium 21 111AMOT Alluvium Along Mississippi River and Ohio River Tributary Streams 21 111CLVM Colluvium 21 111HLCN Holocene Series 21 112CNTL Continental Deposits 21 112CNTLS Continental Deposits Silt and Sand 21 112HLFV High-Level Fluvial Deposits 21 112LAKE Lake Deposits 21 112LFTT Lafayette Gravel 21 112LOSS Loess 21 112ORLT Ohio River Deposits, Lower Terrace 21 112ORUT Ohio River Deposits, Upper Terrace 21 112OTSH Outwash 21 112PLSC Pleistocene Series 21 112TILL Till 21 112TRRC Terrace Deposits 21 120TRTR Tertiary System 21 124CBWX Claiborne and Wilcox Formations (Groups) Undifferentiated 21 124CCKF Cockfield Formation of Claiborne Group 21 124CKFJ Cockfield Through Jackson Formations 21 124CKMNG Cook Mountain Formation of Claiborne Group 21 124CLBR Claiborne Group 21 124EOCN Eocene Series 21 124JCKS Jackson Group 21 124SPRTC Sparta Sand of Claiborne Group 21 124TLLTC Tallahatta Formation of Claiborne Group 21 124WLCXG Wilcox Group 21 125COCK Clayton and Owl Creek Formations, Paleocene-Cretaceous 21 125PLCN Paleocene Series 21 125PRCK Porters Creek Clay 21 200MSZC Mesozoic Erathem 21 210CRCS Cretaceous System 21 211CRCSU Upper Cretaceous Series 21 211MCNR McNairy Formation 21 211TSCL Tuscaloosa Formation 21 300PLZC Paleozoic Erathem 21 320PSLV Pennsylvanian System 21 321HNSH Henshaw Formation 21 321HSLM Henshaw and Lisman Formations Undifferentiated 21 321LSMN Lisman Formation 21 321MGCG Monongahela and Conemaugh Formations 21 321PSLVU Upper Pennsylvanian Series 21 321STRG Sturgis Formation 21 324BRTT Breathitt Formation 21 324CBDL Carbondale Formation 21 324CBDT Carbondale and Tradewater Formations Undifferentiated 21 324CRBN Corbin Sandstone Member of Lee Formation 21 324CSVL Caseyville Formation 21 324HNCE Hance Formation 21 324LEE Lee Formation 21 324MGHC Mingo and Hance Formations 21 324MNGO Mingo Formation 21 324PSLVM Middle Pennsylvanian Series 21 324TDCV Tradewater-Caseyville Formations, Undifferentiated 21 324TRDR Tradewater Formation (Anvil Rock Sandstone) 21 325WEIR Weir Formation 21 327PSLVL Lower Pennsylvanian Series 21 330CHRT Chert Rubble 21 330MSSP Mississippian System 21 331BNGR Bangor Limestone 21 331HARL Hartselle Formation 21 331MSSPU Mississippian, Upper 21 331PNNG Pennington Formation 21 332AXVS Aux Vases Sandstone 21 332BCCK Beech Creek Limestone Member of Golconda Formation 21 332BFLW Buffalo Wallow Formation 21 332BIGC Big Clifty Limestone Member of Golconda Formation 21 332BTHL Bethel Sandstone 21 332BVBD Beaver Bend Limestone 21 332BVBM Beaver Bend Limestone and Mooretown (Bethel) Formation 21 332BVBP Beaver Bend and Paoli Limestones 21 332CLOR Clore Limestone 21 332CPRS Cypress Sandstone (Elwren Sandstone) 21 332CSTR Chesterian Series 21 332DGON Degonia Sandstone 21 332GLCDB Golconda Formation (Big Lime of W Ky) 21 332GLND Glen Dean Limestone 21 332GRKN Girkin Formation 21 332HABG Hardinsburg Sandstone (Jones Sand) 21 332HNEY Haney Limestone Member of Golconda Formation 21 332KDDR Kidder Limestone Member of Monteagle Limestone 21 332KNKD Kinkaid Limestone 21 332LCFD Leitchfield Formation 21 332MNGL Monteagle Limestone 21 332MNRD Menard Limestone 21 332MXON Maxon Sandstone 21 332PACK Paint Creek Shale (Limestone) 21 332PLSN Palestine Sandstone 21 332POLI Paoli Limestone 21 332PRGN Paragon Formation 21 332RENL Renault Formation (Limestone) 21 332RLVL Reelsville Limestone 21 332RVCF Ravencliff Sandstone 21 332SDSM Surficial Deposits of Slumped Material 21 332SLDE Slade Formation 21 332SLDEL Slade Formation (Lower) 21 332SLDEU Slate Formation (Upper) 21 332SMPL Sample Sandstone 21 332TSPG Tar Springs Sandstone 21 332VINN Vienna Limestone 21 332WLBG Waltersburg Sandstone 21 333FRDN Fredonia Limestone Member of Ste. Genevieve Limestone 21 333HDBG Harrodsburg Limestone 21 333LRVR Lost River Chert Bed of Fredonia Limestone Mbr of Ste. Genevieve Ls. 21 333LVIS Levias Limestone Member of St Genevieve Limestone 21 333MCCK Mcclosky Sand 21 333MRMC Meramecian Series 21 333RCLR Rosiclare Sandstone Member of Ste. Genevieve Limestone 21 333RNFR Renfro Member of Slade Formation 21 333SGSL Ste. Genevieve-St Louis Limestones, Undifferentiated 21 333SGVV Ste. Genevieve Limestone 21 333SLEM Salem Limestone 21 333SLSM St Louis and Salem Limestones Undifferentiated 21 333SMST Somerset Shale Member of Warsaw Limestone 21 333SMWR Salem and Warsaw Formations 21 333STLS St. Louis Limestone 21 333STLSL Lower Limestone Member of St. Louis Limestone 21 333STLSU Upper Limestone Member of St. Louis Limestone 21 333WARS Warsaw Limestone 21 337BBDF Berea Sandstone and Bedford Shale 21 337BDFD Bedford Shale 21 337BERE Berea Sandstone 21 337CBLL Cowbell Member of Borden Formation 21 337CNVL Cane Valley Limestone Member of Fort Payne Formation 21 337FRPN Fort Payne Chert/formation 21 337GRGR Grainger Formation 21 337HLGP Halls Gap Member of Borden Formation 21 337KNFL Knifley Sandstone Member of Fort Payne Formation 21 337MPDV Mississippian-Devonian System 21 337MSSPL Mississippian, Lower 21 337NNCY Nancy Member of Borden Formation 21 337NWMN Newman Limestone (Big Lime of E. Ky) 21 337SNBR Sunbury Shale 21 337WILD Wildie Member of Borden Formation 21 338BORD Borden Formation (Fort Payne and New Providence) 21 338INJN Injun Sand 21 338NPVC New Providence Shale 21 338OSGE Osagean Series 21 338WEIR Weir Sand 21 338WVRL Waverly Group 21 340DVNN Devonian System 21 341DVNNU Devonian, Upper 21 341KBLH Knob Lick and Hardin Sandstones 21 341NALB New Albany Shale 21 344BCBO Boyle Limestone and Crab Orchard Formation 21 344BOYL Boyle Limestone 21 344CLCK Clear Creek Limestone 21 344DCCK Dutch Creek Sandstone 21 344DVNNM Devonian, Middle 21 344SBJV Sellersburg and Jeffersonville Limestones Equivalents (Onondaga Ls.) 21 347BAKB Backbone Limestone (Subsurface) 21 347BILY Bailey Limestone 21 350SLRN Silurian System 21 354BRPR Brownsport Formation 21 354BSHR Bisher Limestone 21 354CBOB Crab Orchard and Brassfield Formations 21 354CBOC Crab Orchard Formation 21 354CLNN Clinton Formation 21 354DXON Dixon Formation (Subsurface) 21 354LEGO Lego Limestone Member of Wayne Formation 21 354LOGD Laurel Dolomite and Osgood Formation 21 354LURL Laurel Dolomite 21 354LVLG Louisville Limestone and Lego Ls Member of Wayne Fm (Big Six Sand) 21 354LVLL Louisville Limestone and Laurel Dolomite 21 354OGBF Osgood Formation and Brassfield Dolomite 21 354OSGD Osgood Formation 21 354SLDR Waldron Shale 21 354SLIN Salina Formation 21 354SLRNM Silurian, Middle 21 355LCKP Lockport Dolomite 21 355NIGR Niagaran Series 21 357BAFD Brassfield Limestone (Dolomite) 21 357SLRNL Silurian, Lower 21 360ODVC Ordovician System 21 361ALCK Ashlock Formation 21 361ALCKL Lower Ashlock Formation 21 361ALCKU Upper Ashlock Formation 21 361BLFK Bull Fork Formation 21 361CLCK Calloway Creek Limestone 21 361CLFR Clays Ferry Formation 21 361CMBD Cumberland Formation (Richmond Group) 21 361DKAK Drakes and Ashlock Formations 21 361DKBF Drakes and Bull Fork Formations 21 361DRKS Drakes Formation 21 361EDENS Eden Group (Million Shale) 21 361FRVW Fairview Formation 21 361GLBR Gilbert Member of Ashlock Formation 21 361GRLK Grant Lake Limestone 21 361GRRD Garrard Siltstone 21 361KOPE Kope Formation 21 361KPCF Kope and Clays Ferry Formations 21 361LPRS Leipers Limestone 21 361ODVCU Ordovician, Upper 21 361PCVL Preachersville Member of Drakes Formation 21 361PPLS Point Pleasant Formation or Tongue of Clays Ferry Formation 21 361REBA Reba Member of Ashlock Formation 21 361RLND Rowland Member of Drakes Formation 21 361SGCK Stingy Creek Member of Ashlock Formation 21 361TATE Tate Member of Ashlock Formation 21 361TRRL Terrill Member of Ashlock Formation 21 364BRNN Brannon Member of Lexington Limestone 21 364CDVL Curdsville Limestone Member of Lexington Limestone 21 364CMPN Camp Nelson Limestone 21 364CNTN Cynthiana Formation (Granville) 21 364DVLH Devil's Hollow Member of Lexington Limestone 21 364EVER Everton Formation (Subsurface) 21 364GCDV Grier and Curdsville Limestone Members of Lexington Limestone 21 364GRIR Grier Limestone Member of Lexington Limestone 21 364HGBG High Bridge Group 21 364LGCV Logana and Curdsville Limestone Members of Lexington Limestone 21 364LOGN Logana Limestone Member of Lexington Limestone 21 364LXNG Lexington Limestone 21 364MLBG Millersville Member of Lexington Limestone 21 364MRFB Murfreesboro Limestone 21 364OCPN Oregon and Camp Nelson Limestones 21 364ODVCM Ordovician, Middle 21 364PRVL Perryville Limestone Member of Lexington Limestone 21 364SLPW Sulphur Well Member of Lexington Limestone 21 364STPR St Peter Sandstone 21 364TGDG Tanglewood and Grier Limestone Members of Lexington Limestone 21 364TGLD Tanglewood Limestone Member of Lexington Limestone 21 364TRNN Trenton Limestone 21 364TYRN Tyrone Limestone 21 367CPRR Chepultepec Dolomite and Rose Run Sandstone 21 367KNOX Knox Dolomite 21 367NLGV Newala-Longview Dolomite 21 367ODVCL Ordovician, Lower 21 367OVCB Ordovician-Cambrian Systems 21 370AMER Antietam-Erwin Quartzites, Undifferentiated 21 370CMBR Cambrian System 21 370TMSN Tomstown Dolomite 21 371CMBRU Cambrian, Upper 21 371CPRG Copper Ridge Dolomite 21 371MSMN Mount Simon Sandstone 21 377CMBRL Lower Cambrian Series 21 377ROME Rome Formation 21 BASEMENT Basement 21 BEDROCK Bedrock 22 100CNZC Cenozoic Erathem 22 100PNCL Ponchatoula Aquifer, Undifferentiated 22 110LMYN Le Moyen Formation 22 110QRNR Quaternary System 22 111ALVM Holocene Alluvium 22 111DLTCY Deltaic Deposits, Younger 22 111MRMN Mermentau Member of Le Moyen Formation 22 111NLLV Natural Levee Deposits 22 111NORLC New Orleans Aquifer System Surficial Confining Unit 22 111PNBR Point-Bar Deposits 22 111SLNO Shallow Aquifers of New Orleans Area 22 11202LC 200-foot Sand of Lake Charles Area 22 11202NO 200-foot Sand of New Orleans Area 22 11204BR 400-foot Sand of Baton Rouge Area 22 11204NO 400-foot Sand of New Orleans Area 22 11205BR 400- and 600-ft Sands of Baton Rouge Area 22 11205LC 500-foot Sand of Lake Charles Area 22 11206BR 600-foot Sand of Baton Rouge Area 22 11207BR 600 and 800 Foot Sands of Baton Rouge Area 22 11207LC 700-foot Sand of Lake Charles Area 22 11207NO 700-foot Sand of New Orleans Area 22 11212NO 1200-foot Sand of New Orleans Area 22 112ABVL Abbeville Aquifer, Pleistocene Age 22 112ACFL Atchafalaya Aquifer 22 112ALVL Alluvial Aquifers, Undifferentiated 22 112ALVLC Alluvial Aquifers Surficial Confining Units 22 112BNTL Bentley Formation 22 112CHCT Chicot Aquifer, undifferentiated 22 112CHCTC Chicot Aquifer System Surficial Confining Unit 22 112CHCTE Chicot Equivalent Aquifer System (Southeast Louisiana) 22 112CHCTL Chicot Aquifer, Lower 22 112CHCTS Chicot Aquifer, Shallow Sand 22 112CHCTU Chicot Aquifer, Upper 22 112DDMRO Deltaic Deposits of Mississippippi River Valley, Older 22 112GRMC Gramercy Aquifer 22 112GZLS Gonzales Aquifer 22 112GZNO Gonzales-New Orleans Aquifer 22 112LEBU Lebeau Member of Le Moyen Formation 22 112MGMR Montgomery Aquifer 22 112MRVA Mississippi River Alluvial Aquifer 22 112MRVAC Mississippi River Alluvial Aquifer Surficial Confining Unit 22 112NORC Norco Aquifer 22 112NORL New Orleans Aquifer System 22 112ORVA Ouachita River Alluvial Aquifer 22 112ORVAC Ouachita River Alluvial Aquifer Surficial Confining Unit 22 112PLQM Plaquemine Aquifer, Pleistocene Age 22 112PLSC Pleistocene Series 22 112PNCLU Upper Ponchatoula Aquifer 22 112PRIR Prairie Formation 22 112RRVA Red River Alluvial Aquifer 22 112RRVAC Red River Alluvial Aquifer Surficial Confining Unit 22 112SESC Southeast Louisiana Aquifer System Surficial Confining Unit 22 112SLBR Shallow Sands of Baton Rouge Area 22 112SLGZ Shallow Aquifer of Gonzales Area 22 112SRVA Sabine River Alluvial Aquifer 22 112UPTC Upland Terrace Aquifer 22 112UPTCC Upland Terrace Aquifer Surficial Confining Unit 22 112VLTR Valley Trains, Pleistocene 22 112WLBN Williana-Bentley Aquifer 22 112WLLN Williana Formation 22 120ABIT Abita Aquifer 22 120CVGN Covington Aquifer 22 120KNTD Kentwood Aquifer 22 120SLDL Slidell Aquifer 22 120TRTR Tertiary System 22 12101FP Zone 1 Florida Parishes and Point Coupee Parish 22 12102FP Zone 2 Florida Parishes and Point Coupee Parish 22 12108BR 800-foot Sand of Baton Rouge Area 22 12109BR 800 and 1200 Foot Sands of Baton Rouge Area 22 12110BR 1000-foot Sand of Baton Rouge Area 22 12111BR 1000 and 1200 Foot Sands of Baton Rouge Area 22 12112BR 1200-foot Sand of Baton Rouge Area 22 12113BR 1200 and 1500 Foot Sands of Baton Rouge Area 22 12115BR 1500-foot Sand of Baton Rouge Area 22 12116BR 1500- and 1700-ft Sands of Baton Rouge Area, Pliocene Age 22 12117BR 1700-foot Sand of Baton Rouge Area 22 121BGBC Big Branch Aquifer 22 121BLCK Blounts Creek Aquifer 22 121EVGL Evangeline Aquifer 22 121EVGLC Evangeline Aquifer Surficial Confining Unit 22 121EVGLE Evangeline Equivalent Aquifer System (Southeast Louisiana) 22 121FOLY Foley Formation 22 121MMOU Mamou Member of Foley Formation 22 121PCMC Pliocene-Miocene Series 22 121PLCN Pliocene Series 22 121PNCLL Lower Ponchatoula Aquifer 22 121SPGL Steep Gully Member of Foley Formation 22 12203FP Zone 3 Florida Parishes and Point Coupee Parish 22 12219BR 1700 and 2000 Foot Sands of Baton Rouge Area 22 12220BR 2000-foot Sand of Baton Rouge Area 22 12223BR 2000- and 2400-ft Sands of Baton Rouge Area, Miocene Age 22 12224BR 2400-foot Sand of Baton Rouge Area 22 12226BR 2400 and 2800 Foot Sands of Baton Rouge Area 22 12228BR 2800-foot Sand of Baton Rouge Area 22 122AMIT Amite Aquifer 22 122CRCK Castor Creek Aquifer 22 122CRCKC Castor Creek Confining Unit 22 122CRNB Carnahan Bayou Member of Fleming Formation 22 122CTHL Catahoula Formation 22 122CTLHE Catahoula Equivalent Aquifer System (Southeast Louisiana) 22 122DGHL Dough Hills Member of Fleming Formation 22 122DGHLC Dough Hills Confining Unit 22 122FLMG Fleming Formation 22 122FRKL Franklinton Aquifer 22 122HMND Hammond Aquifer 22 122JSPR Jasper Aquifer 22 122JSPRC Jasper Aquifer System Surficial Confining Unit 22 122JSPRE Jasper Equivalent Aquifer System (Southeast Louisiana) 22 122LENAC Lena Confining Unit 22 122MOCN Miocene Series 22 122RMSY Ramsay Aquifer 22 122TCFC Tchefuncta Aquifer, Miocene Age 22 122WMCK Williamson Creek Member of Fleming Formation 22 123OGCE Oligocene-Eocene Series 22 123OLGC Oligocene Series 22 123SNDL Sandel Formation 22 123VKBG Vicksburg Group 22 123VKBJC Vicksburg-Jackson Confining Unit 22 124CCKF Cockfield Formation of Claiborne Group 22 124CCKFC Cockfield Aquifer Surficial Confining Unit 22 124CKMN Cook Mountain Formation 22 124CKMNC Cook Mountain Confining Unit 22 124CLBR Claiborne Group 22 124CRRZ Carrizo Sand 22 124CRVR Cane River Formation 22 124CRVRC Cane River Confining Unit 22 124CRWL Carrizo-Wilcox Aquifer 22 124CRWLC Carrizo-Wilcox Aquifer System Surficial Confining Unit 22 124DLHL Dolet Hills Aquifer 22 124ECPC Eocene-Paleocene Series 22 124EOCN Eocene Series 22 124JCKS Jackson Group 22 124NBRN Naborton Aquifer 22 124NBRNC Naborton Confining Unit 22 124SPARC Sparta Aquifer Surficial Confining Unit 22 124SPRT Sparta Sand 22 124WLCX Wilcox Group 22 124WLCXU Wilcox Aquifer, Upper 22 125CLTN Clayton Formation 22 125MDWY Midway Group 22 125PRCK Porters Creek Clay 22 210CRCS Cretaceous System 22 BASEMENT Basement 22 BEDROCK Bedrock 23 111ALVM Holocene Alluvium 23 111BECH Beach Deposits 23 111CDBC Coastal Dune and Beach Deposits 23 111EOLN Eolian Deposits 23 111SWMP Swamp Deposits 23 112BECH Beach Deposits 23 112DFSFE Drift, Stratified, Early 23 112ICCC Ice-Contact Deposits, Pleistocene 23 112LKGC Lake Deposits, Glacial 23 112MRIN Marine Deposits 23 112OTSH Outwash 23 112OVTR Outwash, Valley Train 23 112SRFD Stratified Deposits, Undifferentiated 23 112TILL Till 23 112TMLM Terminal Moraine Deposits 23 300BDRK Bedrock Undifferentiated 23 320PEVB Pennsylvanian-Cambrian Systems, Undivided 23 340BLBK Bell Brook Formation 23 340DVNN Devonian System 23 340GRNC Granitic Rocks 23 344MPLN Mapleton Sandstone 23 347CPMN Chapman Sandstone 23 347DCKF Dockendorff Group 23 347EDMH Edmunds Hill Andesite 23 347HDGG Hedgehog Formation 23 350PRHM Perham Formation 23 350SLRN Silurian System 23 350SMML Smyrna Mills Formation 23 350SPGV Spragueville Formation 23 354FCVL Frenchville Formation 23 357CRML Carys Mills Formation 23 360CDRG Chandler Ridge Formation 23 360ODVC Ordovician System 23 361PLMN Pyle Mountain Argillite 23 BASEMENT Basement 23 BEDROCK Bedrock 24 000SPRL Saprolite 24 100CNZC Cenozoic Erathem 24 110AFCL Artifical Fill 24 110ALVM Quaternary Alluvium 24 110CLVF Colluvial Fan Deposits 24 110CLVM Colluvium 24 110MNWS Mountain Wash 24 110QRNR Quaternary System 24 110TRRC Terrace Deposits 24 111BRRR Barrier Sand 24 111HLCN Holocene Series 24 111LLND Lowland Deposits 24 111SPOL Spoil 24 111TDLM Tidal Marsh Deposits 24 112BRDN Brandywine Formation 24 112CLMB Columbia Group 24 112IRSR Ironshire Formation 24 112KILD Kent Island Formation 24 112MTCV Minor Terrace Deposit and Colluvium 24 112OMAR Omar Formation 24 112PCPC Pleistocene-Pliocene Series 24 112PLSC Pleistocene Series 24 112PMLC Pamlico Formation 24 112PRBG Parsonsburg Formation 24 112RDGV Red Gravelly Facies 24 112SALB Salisbury Aquifer 24 112SDLD Sunderland Formation 24 112SNPX Sinepuxent Formation 24 112TLBT Talbot Formation 24 112UPLD Upland Deposits 24 112WCML Wicomico Formation 24 112WLSN Walston Silt 24 120TRTR Tertiary System 24 120UPLD Upland Gravel 24 121BRMR Bryn Mawr Formation 24 121BVDM Beaverdam Sand 24 121PLCN Pliocene Series 24 121WLSN Walston Silt 24 122CLVR Calvert Formation 24 122CPNK Choptank Formation 24 122CSLD Cheswold Aquifer 24 122CSPK Chesapeake Group 24 122FDBG Federalsburg Aquifer 24 122FRDC Frederica Aquifer 24 122MNKN Manokin Aquifer 24 122MOCN Miocene Series 24 122OCNC Ocean City Aquifer 24 122PCMK Pocomoke Aquifer 24 122PNSK Pensauken Formation 24 122SMRS St Marys Formation 24 122YRKN Yorktown Formation 24 123OLGC Oligocene Series 24 124ECPC Eocene-Paleocene Series 24 124EOCN Eocene Series 24 124NNJM Nanjemoy Formation 24 124PMNK Pamunkey Group 24 124PNPN Piney Point Formation 24 125AQRC Aquia and Rancocas Aquifer 24 125AQUI Aquia Formation 24 125BRGS Brightseat Formation 24 125HRRS Hornerstown Formation 24 125MAPN Mattaponi Aquifer 24 125MRLB Marlboro Clay 24 125PLCN Paleocene Series 24 125RCCS Rancocas Formation 24 125VNCN Vincentown Formation 24 200MSZC Mesozoic Erathem 24 210CRCS Cretaceous System 24 211CRCSU Upper Cretaceous Series 24 211EGLS Englishtown Formation 24 211MCVL Merchantville Formation 24 211MGTY Magothy Formation 24 211MLEG Marshalltown and Englishtown Formations, Undivided 24 211MLRL Mount Laurel Sand 24 211MNMT Monmouth Formation 24 211MRSL Marshalltown Formation 24 211MTWN Matawan Formation 24 211RRTN Raritan Formation 24 211SVRN Severn Formation 24 217ARDL Arundel Formation 24 217CLCK Canal Creek Aquifer In the Patapsco Formation 24 217CRCSL Lower Cretaceous Series 24 217LPLT La Plata Aquifer 24 217NNMR Nonmarine Cretaceous Aquifer 24 217POMC Potomac Group 24 217PPSC Patapsco Formation 24 217PPSCL Lower Patapsco Aquifer In the Patapsco Formation 24 217PPSCU Upper Patapsco Aquifer In the Patapsco Formation 24 217PTXN Patuxent Formation 24 217WLDF Waldorf Aquifer 24 217WSTD Westwood Aquifer 24 220DIBS Jurassic Diabase 24 230TCBM Triassic Basement Rocks, Undifferentiated 24 230TRSC Triassic System 24 231BALB Balls Bluff Siltstone 24 231BLRN Bull Run Formation 24 231DIBS Diabase Dikes and Sills 24 231GBRG Gettysburg Shale 24 231LBRG Leesburg Limestone Conglomerate Member of Bull Run Formation 24 231MANS Manassas Sandstone 24 231NOXF New Oxford Formation 24 231NOXFB New Oxford Formation Basal Conglomerate 24 231NWRK Newark Group 24 231TRSCU Upper Triassic Series 24 300AMPB Amphibolite Lithofacies of the Wissahickon Formation, Undivided 24 300BCMV Bachman Valley Formation 24 300BLDR Boulder Gneiss of Wissahickon Formation 24 300BLMR Baltimore Gabbro Complex 24 300CCKV Cockeysville Marble 24 300DDHL Druid Hill Amphibolite Member of James Run Formation 24 300ELCC Ellicott City Granodiorite 24 300GBRC Gabbroic Rock, Undifferentiated 24 300GBSP Gabbro and Serpentinite At Gray Hill 24 300GEMR Gneisses, On Garret Island, Near Elk Milles, & Rolling Mill, Undivided 24 300GLFD Guilford Quartz Monzonite 24 300GLLS Gillis Formation 24 300GLPF Gilpins Falls Member of James Run Formation 24 300GLRM Glenarm Series 24 300GPDR Gunpowder Granite 24 300GRGN Georgetown Mafic Complex 24 300GRNC Granitic Rock, Undifferentiated 24 300IJMV Ijamsville Formation 24 300IJVM Ijamsville Formation-Marburg Schist, Undifferentiated 24 300JMSR James Run Formation 24 300KNSG Kensington Quartz Diorite 24 300LBRN Libertytown Metarhyolite 24 300LFPF Little Northeast Cr., Frenchtown, Principio Furnace Mbrs, James Run Fm 24 300LPLC Lower Pelitic Schist of Wissahickon Formation 24 300MBAB Metagabbro and Amphibolite 24 300MCGM Metaconglomerate of Wissahickon Formation 24 300MFIC Mafic Breccia 24 300MGAB Metagraywacke With Amphibolites of Wissahickon (?) Formation 24 300MGCK Metagraywacke of Wissahickon Formation 24 300MQMG Muscovite Quartz Monzonite Gneiss 24 300MRBG Marburg Formation 24 300MWSG Mount Washington Amphibolite 24 300NBCK Norbeck Quartz Diorite 24 300OELL Oella Formation 24 300PCSC Pelitic Shist of Wissahickon (?) Formation 24 300PGMT Pegmatite Dikes 24 300PLCG Pelitic Gneiss of Wissahickon (?) Formation 24 300PLGV Pleasant Grove Schist 24 300PLZC Paleozoic Erathem 24 300PMZA Pegmatite Quartz, Monzonite Gneiss and Alaskite Gneiss 24 300PNRN Piney Run Formation 24 300PRDP Port Deposit Gneiss 24 300PRTB Prettyboy Schist 24 300PSAB Pelitic Schist With Amphibolites of Wissahickon (?) Formation 24 300PZPC Early Paleozoic-Late Precambrian Erathems, Undifferentiated 24 300QZQZ Quartz Gabbro and Quartz Diorite Gneiss 24 300RELY Relay Gneiss Member of James Run Formation 24 300SGFM Sugarloaf Mountain Quartzite 24 300SLVR Silver Run Limestone 24 300SMCK Sams Creek Metabasalt 24 300STRS Setters Formation 24 300UFGB Ultramafic and Gabbroic Rocks 24 300UHBP Felsite, Happy Valley Br., Big Elk Cr., Principio Cr.mbrs, James Run F 24 300UMFC Ultramafic Rocks 24 300UPPC Upper Pelitic Schist of Wissahickon Formation 24 300URBN Urbana Formation 24 300VLCC Volcanic Complex of Cecil County 24 300WDCK Woodstock Quartz Monzonite 24 300WKFD Wakefield Marble 24 300WSCK Wissahickon Formation 24 307JMSR James Run Formation 24 307RELY Relay Gneiss Member of James Run Formation 24 310DNKD Dunkard Group 24 310PRMN Permian System 24 317PRMNL Lower Permian Series 24 320PSLV Pennsylvanian System 24 321CNMG Conemaugh Formation 24 321MNGL Monongahela Formation 24 321PSLVU Upper Pennsylvanian Series 24 324ALGN Allegheny Formation 24 324PSLVM Middle Pennsylvanian Series 24 324PSVL Pottsville Formation 24 324PVAG Pottsville-Allegheny Formations, Undifferentiated 24 330MSSP Mississippian System 24 331GREB Greenbrier Formation 24 331MCCK Mauch Chunk Formation 24 331MSSPU Mississippian, Upper 24 337MSSPL Mississippian, Lower 24 337POCO Pocono Group 24 337PRSL Purslane Sandstone 24 337RCKL Rockwell Formation 24 340DVNN Devonian System 24 341BRLR Brallier Formation 24 341CMNG Chemung Formation 24 341DVNNU Devonian, Upper 24 341HMPR Hampshire Formation 24 341HRRL Harrell Shale 24 341JNGS Jennings Formation 24 341PRKD Parkhead Sandstone 24 341WDMN Woodmont Formation 24 344DVNNM Devonian, Middle 24 344HMLN Hamilton Group 24 344MNNG Mahantango Formation 24 344MRCL Marcellus Shale 24 344NDMR Needmore Shale 24 344RMNY Romney Formation 24 344TIOG Tioga Metabentonite 24 347DVNNL Devonian, Lower 24 347HDBG Helderberg Group 24 347KYSR Keyser Limestone 24 347ORIK Oriskany Group 24 347RDGL Ridgeley Sandstone 24 347SRVR Shriver Chert 24 350SLRN Silurian System 24 351SLRNU Silurian, Upper 24 351TNLY Tonoloway Limestone 24 351WICK Wills Creek Shale 24 352BMBG Bloomsburg Formation 24 354CLIN Clinton Group 24 354KEEF Keefer Sandstone 24 354MCKZ Mc Kenzie Formation 24 354ROCR Rochester Shale 24 354RSHL Rose Hill Formation 24 354SLRNM Silurian, Middle 24 357SLRNL Silurian, Lower 24 357TCRR Tuscarora Sandstone 24 360CRDF Cardiff Metaconglomerate 24 360MRGR Morgan Run Formation 24 360ODVC Ordovician System 24 360PCBM Peach Bottom Slate 24 360SKVL Sykesville Formation 24 360SKVLG Sykesville Formation, Gneiss Member 24 360SKVLS Sykesville Formation, Schist Member 24 361JUNT Juniata Formation 24 361MRBG Martinsburg Shale 24 361ODVCU Ordovician, Upper 24 364CABB Chambersburg Limestone 24 364NMRK New Market Limestone 24 364ODVCM Ordovician, Middle 24 364RPRK Row Park Limestone 24 364STPL St Paul Group 24 367BKMN Beekmantown Group 24 367GROV Grove Limestone 24 367ODVCL Ordovician, Lower 24 367PBGS Pinesburg Station Dolomite 24 367RCKR Rockdale Run Formation 24 367SONG Stonehenge Limestone 24 370ARBY Araby Formation 24 370CMBR Cambrian System 24 370DDHL Druid Hill Amphibolite Member of James Run Formation 24 370GPDR Gunpowder Gneiss 24 370HLFD Holofield Layered Ultramafite 24 370LCRV Loch Raven Schist 24 370PRCK Peters Creek Schist 24 370PRHL Perry Hall Gneiss 24 370RPBG Raspeburg Amphibolite 24 371CMBRU Cambrian, Upper 24 371CONG Conococheague Limestone 24 371ELBK Elbrook Formation 24 374CMBRM Cambrian, Middle 24 377ANTM Antietam Formation 24 377CHLH Chilhowee Group 24 377CMBRL Lower Cambrian Series 24 377FDCK Frederick Limestone 24 377HRPR Harpers Formation 24 377LUDN Loudoun Formation 24 377SKVL Sykesville Formation 24 377SKVLG Gneiss Member, Sykesville Formation 24 377SKVLS Schist Member, Sykesville Formation 24 377TMSN Tomstown Dolomite 24 377WSBR Waynesboro Formation 24 377WVRN Weverton Formation 24 400BLMR Baltimore Gneiss 24 400CATC Catoctin Metabasalt 24 400GBGG Granodiorite and Biotite Granite Gneiss 24 400GNSSC Gneiss Complex 24 400MTRL Metarhyolite and Associated Pyroclastic Sediments 24 400PCMB Precambrian Erathem 24 400SFRN Swift Run Formation 24 400SGTS Slaughterhouse Gneiss 24 400SMCK Sams Creek Formation 24 410SKVL Sykesville Formation 24 BASEMENT Basement 24 BEDROCK Bedrock 25 111ALVM Holocene Alluvium 25 111BECH Beach Deposits 25 111CLVM Colluvium 25 111EOLN Eolian Deposits 25 111FILL Fill 25 111MRIN Marine Deposits 25 111SDMN Sediments, Undifferentiated 25 111SWMP Swamp Deposits 25 112DELT Delta Deposits 25 112ICCCE Ice-Contact Deposits, Including Eskers and Kames 25 112LCSR Lacustrine Deposits 25 112MORND Moraine Deposits, Except Ground Moraine and Drumlins 25 112MRIN Marine Deposits 25 112OTSH Outwash 25 112SRFD Stratified Deposits, Undifferentiated 25 112TILL Till 25 120SDMS Sediments 25 200CRSL Crystalline Rocks 25 210SDMS Sediments, Undifferentiated 25 230IGNSE Igneous Rocks, Extrusive 25 230IGNSI Igneous Rocks, Intrusive 25 230SDMR Triassic Sedimentary Rocks 25 231EBRL East Berlin Formation 25 231HLYK Holyoke Basalt 25 231HMPD Hampden Basalt 25 231NHVN New Haven Formation 25 231PRLD Portland Formation 25 300CRSL Crystalline Rocks, Undifferentiated 25 300CRSLC Crystalline Rocks, Carbonate 25 300CRSLN Crystalline Rocks, Noncarbonate 25 320CRSL Crystalline Rocks 25 320SDMR Sedimentary Rocks 25 330CRSL Crystalline Rocks 25 330SDMR Sedimentary Rocks 25 340CRSL Crystalline Rocks, Undifferentiated 25 340CRSLC Crystalline Rocks, Carbonate 25 340CRSLN Crystalline Rocks, Noncarbonate 25 350CRSL Crystalline Rocks, Undifferentiated 25 350CRSLC Crystalline Rocks, Carbonate 25 350CRSLN Crystalline Rocks, Noncarbonate 25 360CRSL Crystalline Rocks, Undifferentiated 25 360CRSLC Crystalline Rocks, Carbonate 25 360CRSLN Crystalline Rocks, Noncarbonate 25 370CRSL Crystalline Rocks, Undifferentiated 25 370CRSLC Crystalline Rocks, Carbonate 25 370CRSLN Crystalline Rocks, Noncarbonate 25 400CRSL Crystalline Rocks, Undifferentiated 25 400CRSLC Crystalline Rocks, Carbonate 25 400CRSLN Crystalline Rocks, Noncarbonate 25 BASEMENT Basement 25 BEDROCK Bedrock 26 100CNZC Cenozoic Erathem 26 110QRNR Quaternary System 26 111ALVM Holocene Alluvium 26 111CLVM Colluvium 26 111FILL Fill 26 111HLCN Holocene Series 26 111SWMP Swamp Deposits 26 112CLAY Clay 26 112DLTC Deltaic Deposits 26 112DNSD Dune Sand 26 112DRML Drumlins 26 112ESKR Eskers 26 112GLCLR Glacial Deposits, Reworked 26 112GLCU Glacial Deposits, Undifferentiated 26 112GRDM Ground Moraine 26 112GRVL Gravel 26 112HRDP Hardpan 26 112KAME Kame, Pleistocene 26 112LKBD Lake Beds 26 112LKBDC Lake Bed Clay 26 112LKBDS Lake Bed Sand 26 112MORN Moraine 26 112MRTL Moraine and Till 26 112OTSH Outwash 26 112PEAT Peat 26 112PLSC Pleistocene Series 26 112SAND Sand 26 112SDCL Sand and Clay 26 112SDGV Sand and Gravel 26 112SGVC Sand, Gravel, and Clay 26 112SNDD Sand Dune Deposits 26 112SWMP Swamp Deposits 26 112TILL Till 26 112WKDM Waterworked Morainal Material 26 200MSZC Mesozoic Erathem 26 220JRSC Jurassic System 26 220RDBD Jurassic Red Beds 26 221KMDG Kimeridgian Series 26 300DLMT Dolomite 26 300EVPR Paleozoic Evaporites 26 300LMSN Limestone 26 300LNSL Paleozoic Limestone and Shale 26 300PLZC Paleozoic Erathem 26 300SADS Paleozoic Sandstone and Shale 26 300SHLE Paleozoic Shale 26 300SNDS Paleozoic Sandstone 26 320DLMT Pennsylvanian Dolomite 26 320EVPR Pennsylvanian Evaporites 26 320LMSN Pennsylvanian Limestone 26 320LNSL Pennsylvanian Limestone and Shale 26 320PSLV Pennsylvanian System 26 320PSLVR Pennsylvanian Rocks 26 320SDSL Sandstone and Shale 26 320SHLE Pennsylvanian Shale 26 320SNDS Pennsylvanian Sandstone 26 321ETON Eaton Sandstone 26 321GDRV Grand River Formation 26 321IONI Ionia Sandstone Member of Grand River Formation 26 321PSLVU Upper Pennsylvanian Series 26 321WDVL Woodville Sandstone 26 324PARM Parma Sandstone 26 324PSLVM Middle Pennsylvanian Series 26 324SGMG Saginaw-Michigan Formations 26 324SGML Saginaw-Marshall Formations 26 324SGNW Saginaw Formation 26 324VERN Verne Limestone Member of Saginaw Formation 26 327PSLVL Lower Pennsylvanian Series 26 327PVMP Pennsylvanian-Mississippian Series 26 328MRWN Morrowan Series 26 328PARM Parma Sandstone 26 328PSVL Pottsville Series 26 330DLMT Mississippian Dolomite 26 330EVPR Mississippian Evaporites 26 330LMSN Mississippian Limestone 26 330LNSL Mississippian Limestone and Shale 26 330MSSP Mississippian System 26 330MSSPR Mississippian Rocks 26 330SDSL Mississippian Sandstone and Shale 26 330SHLE Mississippain Shale 26 330SNDS Mississippian Sandstone 26 331MSSPU Mississippian, Upper 26 333BPMG Bayport-Michigan Formations 26 333BPRT Bayport Limestone 26 333GDRP Grand Rapids Group 26 333MCGN Michigan Formation 26 333MRMC Meramecian Series 26 337ANRM Antrim Shale 26 337BDFD Bedford Shale 26 337BERE Berea Sandstone 26 337CLDR Coldwater Shale 26 337ELSR Ellsworth Shale 26 337MPDV Mississippian-Devonian System 26 337MRSL Marshall Formation 26 337MRSLL Marshall Sandstone, Lower 26 337MSSPL Mississippian, Lower 26 337NPLN Napoleon Sandstone Member of Marshall Formation 26 337RCMV Richmondville Sandstone Member of Coldwater Shale 26 337SBBB Sunbury Shale, Berea and Bedford Formations 26 337SNBR Sunbury Shale 26 338OSGE Osagean Series 26 339KDRK Kinderhookian Series 26 340DLMT Devonian Dolomite 26 340DVNN Devonian System 26 340DVNNR Devonian Rocks 26 340EVPR Devonian Evaporites 26 340LMSN Devonian Limestone 26 340LNSL Devonian Limestone and Shale 26 340SDSL Devonian Sandstone and Shale 26 340SHLE Devonian Shale 26 340SNDS Devonian Sandstone 26 341DVNNU Devonian, Upper 26 341TRVR Traverse Group 26 342CTQN Chautauquan Series 26 343SNCN Senecan Series 26 343SQBY Squaw Bay Limestone 26 344ALPN Alpena Limestone 26 344BELL Bell Shale 26 344CLVX Charlevoix Limestone 26 344DCKS Dock Street Shale 26 344DUND Dundee Formation 26 344DVNNM Devonian, Middle 26 344FMDM Four Mile Dam Formation 26 344FRNP Ferron Point Formation 26 344GNSH Genshaw Formation 26 344GVLP Gravel Point Formation 26 344KHLR Koehler Limestone 26 344KLNS Killians Limestone 26 344LGLK Long Lake Limestone 26 344LUCS Lucas Formation 26 344NNCK Newton Creek Limestone 26 344NRPN Norway Point Formation 26 344PDGP Partridge Point Formation 26 344PRFM Potter Farm Formation 26 344PTSK Petoskey Limestone 26 344RGRC Rogers City Limestone 26 344RKPQ Rockport Quarry Limestone 26 344SILC Silica Formation 26 344SNPN Stony Point Formation 26 344TDRB Thunder Bay Limestone 26 344TMCK Ten Mile Creek Dolomite 26 345ERIN Erian Series 26 347DVNNL Devonian, Lower 26 347DVSL Devonian-Silurian Systems 26 348ADRD Anderdon Formation 26 348AMBG Amherstburg Formation 26 348BBLC Bois Blanc Formation 26 348DRRV Detroit River Group 26 348FILR Filer Sandstone Lentil of Amherstburg Formation 26 348FRCK Flat Rock Dolomite 26 348GDID Garden Island Formation 26 348MCKC Mackinac Breccia 26 348ONDG Onondaga Limestone 26 348RCFD Richfield Member of Lucas Limestone 26 348SLVN Sylvania Sandstone 26 348ULSR Ulsterian Series 26 350DLMT Silurian Dolomite 26 350EVPR Silurian Evaporites 26 350LMSN Silurian Limestone 26 350LNSL Silurian Limestone and Shale 26 350SDSL Silurian Sandstone and Shale 26 350SHLE Silurian Shale 26 350SLRN Silurian System 26 350SLRNR Silurian Rocks 26 350SNDS Silurian Sandstone 26 351SLRNU Silurian, Upper 26 352BILD Bass Islands Dolomite 26 352CYGN Cayugan Series 26 352CYUG Cayuga Group 26 352GFLD Greenfield Dolomite 26 352PAXC Point Aux Chenes Shale 26 352PINB Put-In-Bay Dolomite 26 352RRVR Raisin River Dolomite 26 352SIGC St Ignace Dolomite 26 352SLIN Salina Group 26 352SLINC Salina Group C Unit 26 352SLIND Salina Group D Evaporite 26 352SLINE Salina Group E Unit 26 352SLINF Salina Group F Evaporites 26 352SLING Salina Group G Unit 26 352SLINT Salina Formation 26 352TMCT Tymochtee Shale 26 354SLRNM Silurian, Middle 26 355BBLF Burnt Bluff Group 26 355BURNT Bluff Formation 26 355BYRN Byron Dolomite 26 355CLNN Clinton Shale 26 355CRDL Cordell Dolomite 26 355ENGD Engadine Dolomite 26 355FBRN Fiborn Limestone 26 355GLPH Guelph Dolomite 26 355HDCK Hendricks Dolomite 26 355LCKP Lockport Dolomite 26 355LMID Lime Island Dolomite 26 355MNSQ Manistique Dolomite 26 355MVLL Mayville Dolomite 26 355NGRN Niagaran Series 26 355NGRNB Brown Niagaran 26 355NGRNG Niagara Group 26 355SA1C Salina Group A-1 Carbonate 26 355SA1E Salina Group A-1 Evaporite 26 355SA2C Salina Group A-2 Carbonate 26 355SA2E Salina Group A-2 Evaporite 26 355SCCF Schoolcraft Dolomite 26 355SLINB Salina Group B Evaporite 26 357SLOV Silurian-Ordovician System 26 357SLRNL Silurian, Lower 26 358ALXD Alexandrian Series 26 358CBHD Cabot Head Shale 26 358CTRC Cataract Formation 26 358MNLN Manitoulin Dolomite 26 360DLMT Ordovician Dolomite 26 360EVPR Ordovician Evaporites 26 360LMSN Ordovician Limestone 26 360LNSL Ordovician Limestone and Shale 26 360ODVC Ordovician System 26 360ODVCR Ordovician Rocks 26 360SDSL Ordovician Sandstone and Shale 26 360SHLE Ordovician Shale 26 360SNDS Ordovician Sandstone 26 361ODVCU Ordovician, Upper 26 362BDNC Bay De Noc Shaly Limestone 26 362BGHL Big Hill Limestone 26 362BLCK Bills Creek Shale 26 362CLGD Collingwood Formation 26 362CNCN Cincinnatian Series 26 362DEEN Edenian Stage 26 362EDEN Eden Group 26 362MSVL Maysvillian Stage 26 362OGNZ Ogontz Cherty Limestone 26 362QNSN Queenston Shale 26 362RCMD Richmondian Stage 26 362SNNG Stonington Formation 26 362UTIC Utica Shale 26 364BFLS Bony Falls Member of Black River Formation 26 364ODVCM Ordovician, Middle 26 365ATRN Au Train Formation 26 365BKRV Black River Formation 26 365CDLF Chandler Falls Formation 26 365CMPL Champlainian Series 26 365GLND Glenwood Formation 26 365GRQR Groos Quarry Formation 26 365MHKN Mowawkian Series 26 365TBRV Trenton-Black River Group 26 365TRNN Trenton Group 26 365TRNNL Trenton Limestone 26 367CHZN Chazyan Series 26 367ODVCL Ordovician, Lower 26 367OVCB Ordovician-Cambrian Systems 26 367SRVR Stones River Limestone 26 367STPR St Peter Sandstone 26 368CNDN Canadian Series 26 368HMVL Hermansville Limestone 26 368NRCM New Richmond Sandstone 26 368ONOT Oneota Dolomite 26 368PCTP Prairie Du Chien Group-Trempealeau Formation 26 368PRDC Prairie Du Chien Group 26 368SAKP Shakopee Dolomite 26 370CBPB Cambrian System-Precambrian Erathem 26 370CMBR Cambrian System 26 370CMBRR Cambrian Rocks 26 370DLMT Cambrian Dolomite 26 370EVPR Cambrian Evaporites 26 370LMSN Cambrian Limestone 26 370LNSL Cambrian Limestone and Shale 26 370SDSL Cambrian Sandstone and Shale 26 370SHLE Cambrian Shale 26 370SNDS Cambrian Sandstone 26 371CMBRU Cambrian, Upper 26 372CPRK Chapel Rock Sandstone 26 372CRXN Croixian Series 26 372DRBC Dresbach Group 26 372ECLR Eau Claire Formation 26 372FDBC Franconia Group-Dresbach Sandstone 26 372FRAC Franconia Sandstone 26 372GLVL Galesville Sandstone 26 372JRDN Jordan Sandstone 26 372LKSP Lake Superior Sandstone 26 372LODI Lodi Member of St. Lawrence Formation 26 372MNSG Munising Sandstone 26 372MNSM Mount Simon Sandstone 26 372MRCL Miners Castle Sandstone 26 372SLRC St. Lawrence Formation 26 372TMPL Trempealeau Formation 26 372TPMG Trempealeau-Munising Formations 26 374CMBRL Cambrian, Lower 26 374CMBRM Cambrian, Middle 26 377CBPB Cambrian-Precambrian Rocks 26 400BSMN Precambrian Basement 26 400GRNT Precambrian Granite 26 400IGNS Precambrian Igneous Rocks 26 400IRBG Precambrian Iron-Bearing Unit 26 400MMPC Precambrian Metamorphic Rocks 26 400PCMB Precambrian Erathem 26 400PCMBR Precambrian Rocks 26 400PRZC Proterozoic 26 400SDMR Precambrian Sedimentary Rocks 26 400VLCC Volcanic Rocks 26 420 Precambrian Precambrian Y 26 420ALGM Algoman Granite 26 420CPHB Copper Harbor Conglomerate 26 420FRED Freda Sandstone 26 420JCBV Jacobsville Sandstone 26 420KWNW Keweenawan Supergroup 26 420MLLN Mellen Granite 26 420NNSC Nonesuch Shale 26 420PCMBY Precambrian Y 26 420PGLK Portage Lake Volcanics 26 420PRZCM Proterozoic, Middle 26 430 Precambrian Precambrian X 26 430AJBK Ajibik Formation 26 430AMAS Amasa Formation 26 430ANVL Anvil Member of Ironwood Iron-Formation 26 430BARG Baraga Group 26 430BDRV Bad River Dolomite 26 430BIJK Bijik Iron-Formation Member of Michigamme Slate 26 430BIRD Bird Iron-Bearing Member of Hemlock Formation 26 430BRIR Brier Slate Member of Vulcan Iron-Formation 26 430CCLY Chocolay Group 26 430CKBG Clarksburg Volcanics Member of Michigamme Slate 26 430CRRY Curry Iron-Bearing Member of Vulcan Iron-Formation 26 430DCRK Dunn Creek Slate 26 430FCRV Fence River Formation 26 430FLCH Felch Formation 26 430FRCK Fern Creek Formation 26 430FRLK Fortune Lakes Slate 26 430GDRC Goodrich Quartzite 26 430HMCK Hemlock Formation 26 430HWTH Hiawatha Graywacke 26 430IRND Ironwood Iron-Formation 26 430KFLK Knife Lake Group 26 430KONA Kona Dolomite 26 430LRTT Loretto Slate Member of Vulcan Iron-Formation 26 430MCGM Michigamme Slate 26 430MFLD Mansfield Iron-Bearing Slate Member of Hemlock Formation 26 430MNMN Menominee Group 26 430MQRG Marquette Range Supergroup 26 430MSRD Mesnard Quartzite 26 430NGNE Neqavnee Iron-Formation 26 430NORR Norrie Member of Ironwood Iron-Formation 26 430NRLK Norway Lake Gneiss 26 430PBCP Pabst Member of Tyler Formation 26 430PCMBX Precambrian X 26 430PENC Pence Member of Ironwood Iron-Formation 26 430PLMS Palms Formation 26 430PLMT Plymouth Member of Ironwood Iron-Formation 26 430PRVR Paint River Group 26 430PRZCL Proterozoic, Lower 26 430PVPD Peavey Pond Complex 26 430RDVL Randville Dolomite 26 430RPBC Republic Granite 26 430RVRN Riverton Iron-Formation 26 430SDRS Saunders Formation 26 430SIMO Siamo Slate 26 430SMBG Stambaug Formation 26 430SNDY Sunday Quartzite 26 430SRGN Sturgeon Quartzite 26 430TRDR Trader's Iron-Bearing Member of Vulcan Iron-Formation 26 430TYLR Tyler Formation 26 430VLCN Vulcan Iron-Formation 26 430WEWE Wewe Slate 26 430WUSC Wauseca Pyritic Member of Dunn Creek Slate 26 430YALE Yale Member of Ironwood Iron-Formation 26 440 Precambrian Precambrian W 26 440ARCN Archean 26 440DCKS Dickinson Group 26 440EBRC East Branch Arkose 26 440KTCH Kitchi Schist 26 440LGSP Lighthouse Point Member of Mona Schist 26 440LRNN Laurentian Series 26 440MONA Mona Schist 26 440PCMBW Precambrian W 26 440PLMR Palmer Gneiss 26 440PQIL Presque Isle Granite 26 440SLBG Solberg Schist 26 440SXML Six Mile Lake Amphibolite 26 BASEMENT Basement 26 BEDROCK Bedrock 27 000UMTL unknown material 27 100CNZC Cenozoic Erathem 27 110QRNR Quaternary System 27 110SDGV Sand and Gravel - Holocene and Pleistocene Series 27 111ALVM Holocene Alluvium 27 111HLCN Holocene Series 27 111SOIL Soil 27 112BECH Beach Deposits 27 112BRDO Buried Outwash Deposits 27 112BRRD Brainerd Till 27 112CLAY Clay 27 112DMDF Des Moines Drift 27 112DSMO Des Moines Outwash 27 112GBSG Glacial Buried Sand and/or Gravel 27 112GSSG Glacial Surficial Sand and/or Gravel 27 112KTHO Kathio Aquifer 27 112LKGZ Lake Agassiz Clay 27 112LKOM Lake Onamia Aquifer 27 112NULM New Ulm Till 27 112OTSHS Outwash, Surficial Sand 27 112PEAT Peat 27 112PIRZ Pierz Till 27 112PLSC Pleistocene Series 27 112PRWC Pre-Wisconsin Deposits 27 112RNDF Rainy Drift 27 112RNOS Rainy Outwash 27 112RVFL River Falls Formation 27 112SPDF Superior Drift 27 112SPRO Superior Outwash 27 112TILL Till 27 112WDDF Wadena Drift 27 112WDNO Wadena Outwash 27 112WSCS Wisconsinan Stage 27 120TRTR Tertiary System 27 200MSZC Mesozoic Erathem 27 210CRCS Cretaceous System 27 211BLFC Belle Fourche Formation 27 211CLRN Coleraine Formation 27 211CRCSU Upper Cretaceous Series 27 211CRLL Carlile Shale 27 211GRNR Greenhorn Formation 27 211GRRS Graneros Shale 27 211IRHL Iron Hill Member of Windrow Formation 27 211NBRR Niobrara Formation 27 211PIRR Pierre Shale 27 211WNDR Windrow Formation 27 217ORDR Ostrander Member of Dakota Formation 27 220JRSC Jurassic System 27 224AMRN Amaranth Formation 27 224JRSCM Middle Jurassic Series 27 300PLZC Paleozoic Erathem 27 340CVMD Cedar Valley-Maquoketa-Dubuque Formations 27 340CVMDG Cedar Valley-Maquoketa-Dubuque-Galena Aquifer 27 340CVMQ Cedar Valley-Maquoketa Formations 27 340DVNN Devonian System 27 340DVOV Devonian-Ordovician Systems 27 341DVNNU Devonian, Upper 27 341SRCK Shell Rock Formation 27 344CDVL Cedar Valley Limestone 27 344CRVL Coralville Member of Cedar Valley Formation 27 344DVNNM Devonian, Middle 27 344RPID Rapid Member of Cedar Valley Formation 27 344SOLN Solon Member of Cedar Valley Formation 27 357SODV Silurian-Ordovician Systems 27 357STNL Stonewall Formation 27 360ODVC Ordovician System 27 361CLRM Clermont Shale Member of Maquoketa Formation 27 361ELGN Elgin Member of Maquoketa Formation 27 361MQKG Maquoketa Shale-Galena Dolomite 27 361MQKT Maquoketa Shale 27 361RDRV Red River Formation 27 362CNCN Cincinnatian Series 27 362DBQG Dubuque Formation-Galena Dolomite 27 364CMGV Cummingsville Member of Galena Dolomite 27 364DCRH Decorah Formation 27 364DUBU Dubuque Formation 27 364GLEN Galena Dolomite 27 364GLND Glenwood Formation 27 364PLVL Platteville Formation 27 364PROR Prosser Member of Galena Group 27 364SEVL Stewartville Member of Galena Group 27 364STPR St Peter Sandstone 27 364WNPG Winnipeg Formation 27 365CMPL Champlainian Series 27 365CRMN Carimona Member of Platteville Formation 27 365MCGG Mcgregor Member of Platteville Formation 27 365PECC Pecatonica Member of Platteville Formation 27 367NRCM New Richmond Sandstone 27 367ONET Oneota Member of Prairie Du Chien Formation 27 367ONOT Oneota Dolomite 27 367PADC Prairie Du Chien Group 27 367SHKP Shakopee Dolomite 27 367WLRV Willow River Member of Shakopee Formation 27 368CNDN Canadian Series 27 368NRCMP New Richmond Sandstone of Prairie Du Chien Group 27 368SAKPP Shakopee Dolomite of Prairie Du Chien Group 27 370CMBR Cambrian System 27 371BRKM Birkmose Member of Franconia Formation 27 371CBPB Cambrian System-Precambrian Erathem 27 371CMBRU Cambrian, Upper 27 371DRBC Dresbach Group 27 371ECMS Eau Claire-Mt. Simon Formations 27 371FIGV Franconia-Ironton-Galesville Formations 27 371FRNC Franconia Sandstone 27 371GLVL Galesville Sandstone 27 371IGEC Ironton-Galesville-Eau Claire Formations 27 371IRNT Ironton Sandstone Member of Franconia Sandstone 27 371JIGV Jordan-Ironton-Galesville Sandstones 27 371JRDN Jordan Sandstone 27 371JSLC Jordan-St. Lawrence Formations 27 371JSTF Jordan-St. Lawrence-Franconia Formations 27 371LODI Lodi Member of St Lawrence Formation 27 371MSHK Mt. Simon-Hinckley Aquifer 27 371MSMN Mount Simon Sandstone 27 371MSRC Mt. Simon Sandstone-Red Clastics Series 27 371MZMN Mazomanie Sandstone 27 371MZMR Mazomanie-Reno Members of Franconia Formation 27 371NRLK Norwalk Member of Jordan Sandstone 27 371RENO Reno Member of Franconia Formation 27 371SLCF St Lawrence-Franconia Formations 27 371SLRC St Lawrence Formation 27 371SNSP Sunset Point Member of Jordan Sandstone 27 371TOMH Tomah Member of Franconia Formation 27 371VOSR Van Oser Member of Jordan Sandstone 27 372ECLR Eau Claire Formation 27 372FRNC Franconia Formation 27 372IRGLS Ironton-Galesville Sandstones 27 372IRON Ironton Sandstone 27 378PDCJ Prairie Du Chien-Jordan Aquifer 27 400AGGK Argillite-Graywacke 27 400BBKF Biwabik Iron Formation 27 400BLPL Belle Plaine Formation 27 400BSLT Basalt 27 400DCPX Duluth Complex 27 400ELY Ely Greenstone 27 400FDLC Fond Du Lac Formation 27 400GRNT Precambrian Granite 27 400GSSC Gneiss-Schist 27 400HCKL Hinckley Formation 27 400KFLK Knife Lake Group 27 400MDMR Metasedimentary Rocks 27 400MSVL Minnesota Valley Granite Series 27 400MVCC Metavolcanic Rocks 27 400NRSR North Shore Volcanic Group 27 400PCMB Precambrian Erathem 27 400RDCC Red Clastics Series 27 400SOUX Sioux Quartzite 27 400VLCC Volcanic Rocks 27 400VRGN Virginia Formation 27 430TMSN Thomson Formation 27 BASEMENT Basement 27 BEDROCK Bedrock 28 100CNZC Cenozoic Erathem 28 110ALVM Quaternary Alluvium 28 110QRNR Quaternary System 28 110QRRT Quaternary-Tertiary Systems 28 110SAND Sand 28 110SDGV Sand and Gravel - Holocene and Pleistocene Series 28 110TRCS Terrace Deposits, Undifferentiated 28 111ALVM Holocene Alluvium 28 111CSTL Coastal Deposits 28 111HCPC Holocene-Pleistocene Series 28 111HLCN Holocene Series 28 111LTAVP Low Terrace Deposits and Alluvium 28 111NLMR Natural Levee Deposits of Mississippi River 28 111TERC Terrace Deposits, Undifferentiated 28 112ALVM Alluvium 28 112HGTC High Terrace Deposits 28 112IMTC Intermediate Terrace Deposits 28 112LOSS Loess 28 112LTRC Low Terrace Deposits 28 112MRVA Mississippi River Alluvial Aquifer 28 112PCPC Pleistocene-Pliocene Series 28 112PLSC Pleistocene Series 28 112TRCS Terrace Deposits, Undifferentiated 28 112VLTR Valley Trains, Pleistocene 28 120TRCC Tertiary-Cretaceous Systems 28 120TRTR Tertiary System 28 121CRNL Citronelle Formation 28 121GRMF Graham Ferry Formation 28 121PCMC Pliocene-Miocene Series 28 121PLCN Pliocene Series 28 122CTHLL Catahoula Formation, Lower 28 122CTHLM Catahoula Formation, Middle 28 122CTHLU Catahoula Formation, Upper 28 122FADM Fort Adams Member of Pascagowa Formation 28 122HBRG Hattiesburg Formation 28 122HMCT Homochitto Member of Pascagoula Formation 28 122HRSG Heterostegina Zone 28 122MCOG Miocene-Oligocene Series 28 122MOCN Miocene Series 28 122PCGL Pascagoula Formation 28 122PCGLL Lower Pascagoula 28 122PHMK Paynes Hammock Sand 28 122TTUM Tatum Limestone Member of Catahoula Formation 28 123BCTN Bucatunna Clay Member of Byram Formation 28 123BYRM Byram Formation 28 123BYRMM Middle Marl Member of Byram Formation 28 123CCKS Chickasawhay Limestone 28 123FRHL Forest Hill Sand 28 123GLND Glendon Limestone Member of Byram Formation 28 123MRNN Marianna Limestone 28 123MSPG Mint Spring Marl Member of Marianna Limestone 28 123OGCE Oligocene-Eocene Series 28 123OLGC Oligocene Series 28 123RDBF Red Bluff Clay 28 123VKBG Vicksburg Group 28 123WSBR Waynesboro Sand Lentil (Informal Usage) of Byram Formation 28 124ARCS Archusa Marl Member of Cook Mountain Limestone 28 124BSCC Basic City Shale Member of Tallahatta Formation 28 124BSHI Bashi Marl Member of Hatchetigbee Formation 28 124CCKF Cockfield Formation of Claiborne Group 28 124CKMN Cook Mountain Formation 28 124CKMNR Cook Mountain Limestone 28 124CLBR Claiborne Group 28 124CMRN Camerina Limestone 28 124COCO Cocoa Sand Member of Yazoo Clay 28 124CRVR Cane River Formation 28 124EOCN Eocene Series 28 124FSPG Fearn Springs Member of Nanafalia Formation 28 124GDCK Gordon Creek Shale Member of Cook Mountain Formation 28 124HCGB Hatchetigbee Formation 28 124HCGBN Hatchetigbee Formation, Unnamed Member 28 124JCKS Jackson Group 28 124MDBC Moodys Branch Formation 28 124MDBCR Moodys Branch Limestone 28 124MRDN Meridian Sand Member of Tallahatta Formation 28 124MUWX Meridian-Upper Wilcox Aquifer 28 124MWCX Minor Wilcox Aquifer 28 124NNFL Nanafalia Formation 28 124NNFLN Nanafalia Formation, Unnamed Member 28 124NSHB Neshoba Sand Member of Tallahatta Formation 28 124NTCK North Twistwood Creek Member of Yazoo Clay 28 124OCAL Ocala Limestone 28 124PCHT Pachuta Marl Member of Yazoo Clay 28 124PTRC Potterchitto Sand Member of Cook Mountain Formation 28 124SHBT Shubuta Member of Yazoo Clay 28 124SLMN Salt Mountain Limestone Equivalent 28 124SPCK Shipps Creek Shale Member of Wautubbee Formation 28 124SPRT Sparta Sand 28 124SPRTL Sparta Sand, Lower 28 124SPRTM Sparta Sand, Middle 28 124SPRTU Sparta Sand, Upper 28 124TLLT Tallahatta Formation 28 124TSCM Tuscahoma Formation 28 124WLCXG Wilcox Group 28 124WLCXL Wilcox Aquifer, Lower 28 124WLCXM Wilcox Aquifer, Middle 28 124WLCXU Wilcox Aquifer, Upper 28 124WNON Winona Sand 28 124WNSB Winona-Neshoba Aquifer 28 124YZOO Yazoo Clay 28 124ZAMA Zama Member of Zilpha Formation 28 124ZLPH Zilpha Clay 28 125CLTN Clayton Formation 28 125MDWY Midway Group 28 125MLDG Matthews Landing Marl Member of Porters Creek Clay 28 125NHOL Naheola Formation 28 125PLCN Paleocene Series 28 125PRCK Porters Creek Clay 28 125PRCKN Porters Creek Clay, Unnamed Member 28 125TPPH Tippal Sand Lentil of Porters Creek Clay 28 200MSZC Mesozoic Erathem 28 210CCJC Cretaceous-Jurassic Systems 28 210CRCS Cretaceous System 28 211ARCL Arcola Limestone Member of Mooreville Chalk 28 211BLFP Bluffport Marl Member of Demopolis Chalk 28 211CCRK Coon Creek Tongue of Ripley Formation 28 211CHWP Chiwapa Member of Ripley Formation 28 211COFF Coffee Sand 28 211COKR Coker Formation 28 211COKRU Upper Unnamed Member of Coker Formation 28 211CRCSU Upper Cretaceous Series 28 211DMPL Demopolis Chalk 28 211DMPLN Demopolis Chalk, Unnamed Member 28 211EOLN Eoline Member 28 211EUTW Eutaw Formation 28 211EUTWL Eutaw Formation, Lower 28 211EUTWN Eutaw Formation, Unnamed Member 28 211EUTWR Eutaw Formation (Restricted) 28 211GORD Gordo Formation 28 211MCNR McNairy Formation 28 211MCSN Mc Shan Formation 28 211MRVL Mooreville Chalk 28 211MRVLN Mooreville Chalk, Unnamed Member 28 211MSSV Massive Sand 28 211OLCK Owl Creek Formation 28 211PBLF Prairie Bluff Chalk 28 211RPLY Ripley Formation 28 211SELM Selma Group 28 211TBGB Tombigbee Sand Member of Eutaw Formation 28 211TRSL Transitional Clay of Ripley Formation 28 211TUCL Tuscaloosa Group 28 211TUCLL Tuscaloosa Group, Lower Member 28 211TUCLM Tuscaloosa Group, Middle Member 28 211TUCLU Tuscaloosa Group, Upper Member 28 217ANDR Andrew Formation 28 217CRCSL Lower Cretaceous Series 28 217DZLR Dantzler Formation 28 217FRLK Ferry Lake Anhydrite 28 217HSTN Hosston Formation 28 217MRGP Mooringsport Formation 28 217RDSS Rodessa Formation 28 217RJPI Rodessa Formation James Limestone and Pine Island Shale Undiff 28 217SLGO Sligo Formation 28 218PALX Paluxy Formation 28 220JRSC Jurassic System 28 221BCKR Buckner Member of Haynesville Formation 28 221CNVL Cotton Valley Formation 28 221HSVL Haynesville Formation 28 221JRSCU Upper Jurassic Series 28 221LUNN Louann Salt 28 221NRPL Norphlet Formation 28 221SMKV Smackover Formation 28 221WRNR Werner Formation 28 300PLZC Paleozoic Erathem 28 310EGLM Eagle Mills Formation 28 310PRMN Permian System 28 320PRKD Parkwood Formation 28 320PSLV Pennsylvanian System 28 320PVMP Pennsylvanian-Mississippian Systems 28 324MRHS Moorehouse Formation 28 324PSLVL Middle-Lower Pennsylvanian Series 28 324PSVL Pottsville Formation 28 330MSSP Mississippian System 28 331ALBK Alsobrook Member of Pride Mountain Formation 28 331BNGR Bangor Limestone 28 331GRHL Green Hill Member of Pride Mountain Formation 28 331HRSL Hartselle Sandstone 28 331MSSPU Mississippian, Upper 28 331MYNT Mynot Sandstone Member of Pride Mountain Formation 28 331PNNG Pennington Formation 28 331PRDM Pride Mountain Formation 28 331SDFL Sandfall Member of Pride Mountain Formation 28 331SSPG Southward Spring Sandstone Member of Pride Mountain Formation 28 331TCMB Tuscumbia Limestone 28 331TDBC Tanyard Branch Member of Pride Mountain Formation 28 331WGNN Wagnon Member of Pride Mountain Formation 28 337FORP Fort Payne Chert 28 337MPDV Mississippian-Devonian System 28 337MSSPL Mississippian, Lower 28 337MURY Maury Formation 28 340DVNN Devonian System 28 341CTNG Chattanooga Shale 28 341DVNNU Devonian, Upper 28 344CMDN Camden Chert 28 344DVVNM Middle-Lower Devonian Series 28 347DVSL Devonian-Silurian Systems 28 350SLRN Silurian System 28 BASEMENT Basement 28 BEDROCK Bedrock 29 100CNZC Cenozoic Erathem 29 110QRNR Quaternary System 29 111ALVM Holocene Alluvium 29 111HLCN Holocene Series 29 111SPOL Holocene Spoil 29 112DRFT Drift 29 112ILNN Illinoian Deposits 29 112KNSN Kansan Deposits 29 112LFTT Lafayette Gravel 29 112NBRK Nebraskan Deposits 29 112PLSC Pleistocene Series 29 112VLTR Valley Trains, Pleistocene 29 112WISC Wisconsinan Deposits 29 120TRTR Tertiary System 29 121PLCN Pliocene Series 29 124ACKM Ackerman Formation 29 124CCKF Cockfield Formation of Claiborne Group 29 124CCKFJ Cockfield Through Jackson, Undivided 29 124CKMN Cook Mountain Formation 29 124CKMNJ Jackson Through Cook Mountain, Undivided 29 124CLBR Claiborne Group 29 124EOCN Eocene Series 29 124FLID Flour Island Formation of Wilcox Group 29 124FRPL Fort Pillow Sand of Wilcox Group 29 124HLPG Hollysprings Formation 29 124JCKS Jackson Group 29 124MMPS Memphis Sand 29 124WLCXG Wilcox Group 29 125CLTN Clayton Formation 29 125MDWY Midway Group 29 125PLCN Paleocene Series 29 125PRCK Porters Creek Clay 29 200MSZC Mesozoic Erathem 29 210CRCS Cretaceous System 29 211MCNR McNairy Formation 29 211OLCK Owl Creek Formation 29 212CRCSL Lower Cretaceous Series 29 212GLFN Gulfian Series 29 300PLZC Paleozoic Erathem 29 310PRMN Permian System 29 317IICV Indian Cave Sandstone 29 317PRMNL Lower Permian Series 29 320PSLV Pennsylvanian System 29 322ABRN Auburn Shale 29 322BERN Bern Limestone 29 322CLHN Calhoun Shale 29 322DECK Deer Creek Formation 29 322DGLS Douglas Group 29 322EMPR Emporia Limestone 29 322HWRD Howard Limestone 29 322KANK Kanwaka Formation 29 322LCMP Lecompton Limestone 29 322LRNC Lawrence Shale 29 322NEMH Nemaha Subgroup or Formation 29 322ORED Oread Limestone 29 322PLBR Pillsbury Shale 29 322RCRD Richardson Subgroup 29 322SCFX Sacfox Subgroup 29 322SCRN Scranton Shale 29 322SHWN Shawnee Group 29 322SRGR Stranger Formation 29 322STLR Stotler Limestone 29 322SVRY Severy Shale 29 322TCMS Tecumseh Shale 29 322TOEK Topeka Formation 29 322VRGL Virgilian Series 29 322WBNS Wabaunsee Group 29 322WLRD Willard Shale 29 322ZNDL Zeandale Limestone 29 323BRNS Bronson Subgroup 29 323BSPG Bonner Springs Shale 29 323CHNT Chanute Shale 29 323CRVL Cherryvale Shale 29 323DENS Dennis Formation 29 323DRUM Drum Limestone 29 323GLBG Galesburg Shale 29 323HRTH Hertha Limestone 29 323IATN Iatan Limestone 29 323IOLA Iola Limestone 29 323KSSC Kansas City Group 29 323LANE Lane Shale 29 323LDOR Ladore Shale 29 323LINN Linn Subgroup 29 323LNSG Lansing Group 29 323MSSR Missourian Series 29 323PEDE Pedee Group 29 323PLBG Plattsburg Limestone 29 323PLSN Pleasanton Group 29 323STNN Stanton Limestone 29 323SWOPE Swope Formation 29 323VILS Vilas Shale 29 323WNDT Wyandotte Limestone 29 323WSTN Weston Shale 29 323ZARH Zarah Subgroup 29 325ALAM Altamont Formation 29 325APNS Appanoose Subgroup 29 325BJKC Blackjack Creek Formation 29 325BKJC Blackjack Creek Limestone Member of Fort Scott Limestone 29 325BNDR Bandera Shale 29 325BUJK Bluejacket Formation 29 325BVIR Bevier Formation 29 325CBNS Cabaniss Subgroup 29 325CHRK Cherokee Group 29 325CRBG Croweburg Formation 29 325DRYD Drywood Formation 29 325DSMS Des Moinesian Series 29 325EXCL Excello Formation 29 325FLMG Fleming Formation 29 325FRSC Fort Scott Limestone 29 325HGVL Higginsville Limestone Member of Fort Scott Limestone 29 325HLDV Holdenville Shale 29 325HRSR Hartshorne Sandstone 29 325KRBS Krebs Group 29 325LBTT Labette Shale 29 325LGND Lagonda Formation 29 325LLOG Little Osage Member of Fort Scott Limestone 29 325LNPH Lenapah Limestone 29 325MLKY Mulky Formation 29 325MNRL Mineral Formation 29 325MRMN Marmaton Group 29 325NOWT Nowata Shale 29 325PWNE Pawnee Limestone 29 325RBBC Robinson Branch Formation 29 325ROWE Rowe Formation 29 325SCMN Scammon Formation 29 325SVLL Seville Limestone Member of Krebs Formation 29 325TEBO Tebo Formation 29 325VRDG Verdigris Limestone Member of Cabaniss Formation 29 325WEIR Weir Formation 29 325WRNR Warner Sandstone Member of Krebs Formation 29 326ATCK Atoka Formation 29 326ATKN Atokan Series 29 326BRGR Burgner Formation 29 326CLNM Cheltenham Formation 29 326MCLT Mc Louth Formation 29 326RVRN Riverton Formation 29 328HALE Hale Formation 29 328MRRN Morrowan Series 29 330CTNG Chattanooga Shale 29 330MSSP Mississippian System 29 331BSVL Batesville Sandstone 29 331HDVL Hindsville Limestone 29 332AXVS Aux Vases Sandstone 29 332BSVL Batesville Sandstone 29 332CRVL Carterville Formation 29 332CSTR Chesterian Series 29 332CYPR Cypress Formation 29 332FTVL Fayetteville Shale 29 332GLCD Golconda Formation 29 332GLND Glen Dean Limestone 29 332HDBG Hardinsburg Sandstone 29 332PNCK Paint Creek Formation 29 332RNLT Renault Formation 29 332TSPG Tar Springs Sandstone 29 332VINN Vienna Limestone 29 332YNKN Yankeetown Sandstone 29 333MRMC Meramecian Series 29 333SALM Salem Formation 29 333SGSL Ste. Genevieve-St Louis Limestones, Undifferentiated 29 333SGVV Ste. Genevieve Limestone 29 333STLS St. Louis Limestone 29 333WRSW Warsaw Formation 29 337CHUT Chouteau Limestone 29 337CMPN Compton Limestone 29 338BRLG Burlington Limestone 29 338ELSY Elsey Formation 29 338FRGL Fern Glen Limestone 29 338GDFL Grand Falls Formation 29 338KKKB Keokuk-Burlington Limestones, Undifferentiated 29 338KKUK Keokuk Limestone 29 338OSGE Osagean Series 29 338PRSN Pierson Formation 29 338RSPG Reeds Spring Limestone 29 338SRCK Short Creek Oolite 29 339BCLR Bachelor Sandstone 29 339HNBL Hannibal Formation 29 339KDRK Kinderhookian Series 29 339NRTV Northview Shale 29 339SDLI Sedalia Formation 29 340DVNN Devonian System 29 341BBRG Bushberg Sandstone 29 341CTNG Chattanooga Shale 29 341DVNNU Devonian, Upper 29 341GLPK Glen Park Limestone 29 341GRCK Grassy Creek Shale 29 341LUSN Louisiana Formation 29 341SSPG Sulfur Springs Group 29 341SVRN Saverton Formation 29 341SYCK Snyder Creek Shale 29 344BUVS Beauvais Sandstone 29 344CLLY Callaway Formation 29 344DVNNM Devonian, Middle 29 344FRTN Fortune Formation 29 344GRDT Grand Tower Limestone 29 344SLRN St Laurent Formation 29 347BILY Bailey Limestone 29 347CLCK Clear Creek Chert 29 347DVNNL Devonian, Lower 29 347LLSL Little Saline Limestone 29 350SLRN Silurian System 29 355BBDG Bainbridge Limestone 29 355NGRN Niagaran Series 29 358ALXD Alexandrian Series 29 358BLGG Bowling Green Dolomite 29 358CYRN Cyrene Limestone Member of Edgewood Formation 29 358EDGD Edgewood Formation 29 358GRRD Girardeau Limestone 29 358SXCK Sexton Creek Limestone 29 360ODVC Ordovician System 29 361MQKT Maquoketa Shale 29 362CAPE Cape Limestone 29 362CNCN Cincinnatian Series 29 362OCCK Orchard Creek Shale 29 362THBS Thebes Sandstone 29 364DCRH Decorah Formation 29 364EVRN Everton Formation 29 364JCHM Joachim Dolomite 29 364KMCK Kimmswick Limestone 29 364PLTN Plattin Limestone 29 364SPEV St Peter Sandstone-Everton Formation, Undifferentiated 29 364STPR St Peter Sandstone 29 365CMPL Champlainian Series 29 365DTCN Dutchtown Formation 29 365RKLV Rock Levee Formation 29 367CRJF Cotter-Jefferson City Dolomite 29 367CTTR Cotter Dolomite 29 367GNTR Gunter Sandstone Member of Gasconade Dolomite 29 367GSCD Gasconade Dolomite 29 367GSCDL Gasconade Dolomite, Lower 29 367GSCDU Gasconade Dolomite, Upper 29 367RBDX Roubidoux Formation 29 367SMVL Smithville Formation 29 367SMVP Smithville Formation-Powell Limestone 29 368CNDN Canadian Series 29 368JFRC Jefferson City Dolomite 29 368PLCR Powell-Cotter Dolomites 29 368PWLL Powell Dolomite 29 368SCRK Swan Creek Member of Cotter Formation or Dolomite 29 370CMBR Cambrian System 29 371BCKE Black Earth Member of St. Lawrence Formation 29 371BDDD Bonneterre-Davis Formations and Davis-Derby Dolomites 29 371BONR Bonneterre Formation 29 371BRKM Birkmose Member of Franconia Formation 29 371CMBRU Cambrian, Upper 29 371DEBD Derby-Doerun Dolomite 29 371DVIS Davis Formation 29 371ECLR Eau Claire Formation 29 371ELVS Elvins Group 29 371EMCP Eminence-Potosi Dolomites 29 371EMNC Eminence Dolomite 29 371IGLV Ironton and Galesville Sandstones 29 371LMTT Lamotte Sandstone 29 371MMNC Momence Sandstone Member of Eminence Dolomite 29 371MSMN Mount Simon Sandstone 29 371POTS Potosi Dolomite 29 371REGN Reagan Sandstone 29 371RENO Reno Member of Franconia Formation 29 371SLRCL St. Lawrence Formation-Lower Part 29 371TOMH Tomah Member of Franconia Formation 29 371TRAK Transition Arkose 29 400PCMB Precambrian Erathem 29 BASEMENT Basement 29 BEDROCK Bedrock 30 100CNZC Cenozoic Erathem 30 110ALVF Alluvial Fan Deposits 30 110ALVM Quaternary Alluvium 30 110PDMN Pediment Deposits 30 110TRRC Terrace Deposits 30 111ALVF Alluvial Fan Deposits 30 111ALVM Holocene Alluvium 30 111DDGP Dredge Pilings 30 111MTLG Mine Tailings 30 111PDMN Pediment Deposits 30 111SPBK Spoil Banks 30 111TRRC Terrace Deposits 30 112ALVM Alluvium 30 112AMWC Altamont Moraine-Wisconsin Stage 30 112DRFT Drift 30 112GCLO Glacial Outwash 30 112GFLK Great Falls Lake Sands 30 112GLCC Glaciolacustrine Deposits 30 112LKML Lake Missoula Beds 30 112OTSH Outwash 30 112TILL Till 30 112TRRC Terrace Deposits 30 112WIOT Wiota Gravels 30 120BLMN Belmont Porphyry 30 120BZMN Bozeman Group 30 120CPCK Carpenter Creek Granite Porphyry 30 120DMLM Drumlummon Porphyry 30 120LNLY Linley Conglomerate 30 120PLNC Plutonic Rocks 30 120PNTO Pinto Diorite 30 120SDMS Sediments 30 120SFRD Stanford Conglomerate 30 120TRTR Tertiary System 30 120VLCC Volcanic Rocks 30 121CSTL Castle Granite 30 121FLXV Flaxville Formation 30 121FREL Fort Ellis Beds 30 121LCSR Lacustrine Deposits 30 121SDMS Sediments 30 121VLCC Volcanic Rocks 30 122ARKR Arikaree Formation 30 122DPRVM Deep River Beds (Middle Miocene) 30 122FRLGL Fort Logan Beds (Lower Miocene) 30 122LCSR Lacustrine Deposits 30 122SDMS Sediments 30 122VLCC Volcanic Rocks 30 122WDMN Wood Mountain Gravels 30 123CBGA Climbing Arrow Formation of Bozeman Group (Oligocene-Eocene) 30 123CHLS Challis Volcanics 30 123CKRC Cook Ranch Formation 30 123CPHL Cypress Hills Beds 30 123DBCK Dunbar Creek Formation of Bozeman Group 30 123LCSR Lacustrine Deposits 30 123SDMS Sediments 30 123VLCC Volcanic Rocks 30 123WIRV White River Formation or Group 30 124BVRD Beaverhead Formation (Eocene-Paleocene) 30 124CRDL Crandall Conglomerate 30 124GLDV Golden Valley Formation 30 124KGBG Kingsburg Conglomerate Member of Wasatch Formation 30 124PVIV Plutonics, Volcanics and Intrusives (Tertiary) 30 124REES Reese Formation 30 124SDMS Sediments 30 124SGCK Sage Creek Formation 30 124SPNX Sphinx Conglomerate 30 124VLCC Volcanic Rocks 30 124WSTC Wasatch Formation 30 125BEAR Bear Formation 30 125FRUN Fort Union Formation 30 125HRMN Harmon Lignite Aquifer, Paleocene 30 125LDLW Ludlow Member of Fort Union Formation 30 125LEBO Lebo Member of Fort Union Formation 30 125SNLB Sentinel Butte Member of Fort Union Formation 30 125TGRV Tongue River Member of Fort Union Formation 30 125TLCK Tullock Member of Fort Union Formation 30 125WLCK Willow Creek Formation (Paleocene-Late Cretaceous) 30 200MSZC Mesozoic Erathem 30 210CRCS Cretaceous System 30 211ACRK Ash Creek Sandstone Member of Steel Shale 30 211ADLM Adel Mountain Volcanics 30 211ASPN Aspen Shale 30 211BEFCS Belle Fourche Shale Member of Graneros Shale 30 211BENN Benton Shale of Colorado Group 30 211BGEK Big Elk Sandstone Member of Colorado Shale 30 211BLCK Bull Creek Sandy Limestone Member of Greenhorn Formation 30 211BLDR Boulder Batholith Intrusives 30 211BMCK Billman Creek Formation (Upper Cretaceous) 30 211BRPW Bearpaw Shale 30 211BSIN Basin Shale 30 211BVCK Beaver Creek Chalky Member of Niobrara Formation 30 211CKDL Cokedale Formation (Upper Cretaceous) 30 211CLGG Claggett Shale of the Montana Group 30 211CLGT Colgate Sandstone Member of Fox Hills Formation 30 211CLRD Colorado Group 30 211CODY Cody Shale 30 211CONE Cone Calcareous Member of Marias River Formation 30 211CRLL Carlile Shale 30 211EGLE Eagle Sandstone 30 211ELKB Elk Basin Sandstone Member of Telegraph Creek Formation 30 211ELKM Elkhorn Mountains Volcanics 30 211FHHC Fox Hills-Hell Creek Aquifer 30 211FLWR Floweree Member of Marias River Formation 30 211FRDG Ferdig Shale Member of Marias River Formation 30 211FRHS Fort Hays Limestone Member of Niobrara Formation 30 211FRNR Frontier Formation 30 211FXHL Fox Hills Formation 30 211GMMN Gammon Ferruginous Member of Pierre Shale 30 211GRERC Greenhorn Limestone of Colorado Group 30 211GROTP Groat Sandstone Bed of Pierre Shale 30 211GRRSC Graneros Shale of Colorado Group 30 211HLCK Hell Creek Formation 30 211HPRS Hoppers Formation (Upper Cretaceous) 30 211HRSF Horsethief Sandstone of Montana Group 30 211JDRV Judith River Formation of Montana Group 30 211KVIN Kevin Shale Member of Marias River Formation 30 211LNCE Lance Formation 30 211LNNP Lennep Sandstone of Montana Group 30 211LVGS Upper Cretaceous Livingston Group 30 211LVIG Livingston Igneous Series of Livingston Group 30 211MAVL Marysville Intrusives 30 211MEVD Mesaverde Formation or Group 30 211MMHL Monument Hill Bentonitic Member of Pierre Shale 30 211MNTN Montana Group 30 211MRCK Miner Creek Formation (Upper Cretaceous) 30 211MRRV Marias River Formation of Colorado Group 30 211MSBY Mosby Sandstone Member of Warm Creek Shale 30 211MTTN Mitten Black Shale Member of Pierre Shale 30 211MTTS Meeteetse Formation 30 211NBRRC Niobrara Formation of Colorado Group 30 211PDRO Pedro Bentonite Bed of Pierre Shale 30 211PEAY Peay Sandstone Member of Frontier Formation 30 211PIER Pierre Shale of Montana Group 30 211PINY Piney Formation 30 211PLNC Plutonic Rocks Upper Cretaceous 30 211PRKM Parkman Sandstone of Montana Group 30 211SABK Sage Breaks Shale Member of Niobrara Formation 30 211SGHN Sage Hen Limestone of Colorado Shale 30 211SGVH Scratchgravel Hills Intrusives 30 211SLPF Member of Miner Creek Formation (Sulphur Flats Sandstone) 30 211SMKH Smoky Hill Chalk Member of Niobrara Formation 30 211SMRV St Mary River Formation 30 211SMSM Slim Sam Formation 30 211SNNN Shannon Sandstone Member of Cody Shale 30 211SPCK Soap Creek Bentonite Bed Member of Frontier Formation 30 211SSSX Sussex Sandstone Member of Cody Shale 30 211STEL Steele Shale 30 211SVLF Stoneville Flats Limestone Member of Belle Fourche Shale 30 211TCLG Torchlight Sandstone Member of Frontier Formation 30 211TECK Telegraph Creek Formation of Montana Group 30 211TMBS Tombstone Sandstone 30 211TMDC Two Medicine Formation of Montana Group 30 211TPOT Teapot Sandstone Member of Mesaverde Formation 30 211TRNR Turner Sandy Member of Carlile Shale 30 211VRGL Virgelle Sandstone Member of Eagle Sandstone 30 211WLCK Wall Creek Sandstone Member of Frontier Formation 30 211WMCK Warm Creek Shale of Colorado Group 30 217AMFK American Fork Formation 30 217BCKF Blackleaf Formation of Colorado Group 30 217BIDD Birdhead Sandstone Member 30 217BILD Bow Island Sandstone 30 217BLGR Bootlegger Member of Blackleaf Formation 30 217CBNK Cut Bank Sandstone 30 217CLSN Chilson Member of Lakota Formation 30 217CLSP Clay Spur Bentonite Bed of Mowry Shale 30 217CLVL Cloverly Formation 30 217DAKO Dakota Sandstone or Formation 30 217DRLG Darling Sandstone 30 217FCCK First Cat Creek Sandstone of Colorado Group 30 217FLOD Flood Shale Member of Black Leaf Formation 30 217FLRVI Fall River Formation of Inyan Kara Group 30 217FUSN Fuson Member of Lakota Formation 30 217GRBL Greybull Sandstone Member of Cloverly Formation 30 217HINS Hines Member of Cloverly Formation 30 217INKR Inyan Kara Group 30 217KOTN Kootenai Formation 30 217LAKT Lakota Sandstone of Inyan Kara Group 30 217LLSP Little Sheep Member of Cloverly Formation 30 217LPTN Lupton Sand of Kootenai Formation (2 Nd Cat Creek Sand) 30 217MDDY Muddy Sandstone Member of Thermopolis Shale 30 217MLTN Moulton Sandstone 30 217MSSR Mosser Sandstone 30 217MWRY Mowry Shale 30 217NECL Newcastle Sandstone Member of Graneros Shale 30 217PRYR Pryor Conglomerate Member of Cloverly Formation 30 217SBRS Sunburst Sandstone 30 217SCCK Second Cat Creek Sandstone of Kootenai Formation 30 217SKUC Skull Creek Shale Member of Graneros Shale 30 217TCCK Third Cat Creek Sandstone of Kootenai Formation 30 217TFHL Taft Hill Member of Blackleaf Formation 30 217TMPL Thermopolis Shale 30 217VGHN Vaughn Member of Blackleaf Formation 30 220ELLS Ellis Group 30 220JRSC Jurassic System 30 221CSPGS Canyon Springs Sandstone Member of Sundance Formation 30 221HLTT Hulett Sandstone Member of Sundance Formation 30 221LAK Lak Member of Sundance Formation 30 221MRSN Morrison Formation 30 221RDTR Redwater Shale Member of Sundance Formation 30 221RIRD Rierdon Formation of Ellis Group 30 221SKBV Stockade Beaver Shale Member of Sundance Formation 30 221SNDC Sundance Formation 30 221SWIF Swift Formation of Ellis Group 30 224BOWS Bowes Member of Piper Formation 30 224FRMN Firemoon Limestone Member of Piper Formation 30 224GPSP Gypsum Spring Formation 30 224KLIN Kline Member of Nesson Formation 30 224NSSN Nesson Formation 30 224PCRD Picard Member of Nesson Formation 30 224PIPR Piper Formation 30 224POE Poe Member of Nesson Formation 30 224STTH Sawtooth Formation of Ellis Group 30 224TMPC Tampico Member of Piper Formation 30 230ALCV Alcova Limestone Member of Chugwater Formation 30 230BWLR Bowler Formation Triassic and Permian 30 230CGTR Chugwater Formation 30 230CRMN Crow Mountain Sandstone Member of Chugwater Formation 30 230GSEG Goose Egg Formation 30 230RDPK Red Peak Member of Chugwater Formation 30 230SPRF Spearfish Formation (Triassic-Permian) 30 230TRSC Triassic System 30 231PPAG Popo Agie Member of Chugwater Formation 30 237DNDY Dinwoody Formation 30 237TYNS Thaynes Limestone, Formation or Group 30 237WDSD Woodside Formation, Siltstone and/or Redbeds 30 300PLZC Paleozoic Erathem 30 310FRNS Franson Member or Tongue of Park City Formation 30 310GPKC Grandeur Member or Tongue of Park City Formation 30 310MDPK Meade Peak Phosphatic Shale Member or Tongue of Phosphoria Formation 30 310MNLS Minnelusa Formation (Permian andPennsylvanian) 30 310PRKC Park City Formation or Group 30 310PRMN Permian System 30 310PSPR Phosphoria Formation 30 310RPHP Retort Phosphatic Shale Member or Tongue of Phosphoria Formation 30 310RXPP Rex Chert Member of Phosphoria Formation 30 310SDRN Shedhorn Sandstone 30 310TOSI Tosi Chert Member or Tongue of Phosphoria Formation 30 317MNKT Minnekahta Limestone Member of Goose Egg Formation 30 317OPCH Opeche Shale 30 317TSLP Tensleep Sandstone 30 320AKBC Alaska Bench Limestone of Amsden Group 30 320AMSD Amsden Formation 30 320DRWN Darwin Sandstone of Amsden Group 30 320DVPK Devils Pocket Formation of Amsden Group 30 320PSLV Pennsylvanian System 30 320QDRN Quadrant Quartzite or Formation 30 320TYLRA Tyler Formation of Amsden Group 30 330CLRF Castle Reef Dolomite of Madison Group 30 330EGLD Englewood Formation 30 330HNNH Hannah Limestone 30 330MDLC Middle Canyon Formation of White Knob Group 30 330MLGN Milligen Formation 30 330MSSP Mississippian System 30 330SCPK Scott Peak Formation of White Knob Group 30 330SCRK South Creek Formation of White Knob Group 30 330SRCN Surrett Canyon Formation of White Knob Group 30 330SRVR Sun River Member of Castle Reef Dolomite 30 330WKNB White Knob Group 30 331A A Zone of Charles Formation 30 331B B Zone of Charles Formation 30 331BGSN Big Snowy Group 30 331C C Zone (Berentson Zone) of Charles Formation 30 331CARL Charles Formation of Madison Group 30 331HETH Heath Formation or Shale of Big Snowy Group 30 331KIBB Kibbey Sandstone of Big Snowy Group 30 331MDSN Madison Group (Upper and Lower Mississippian) 30 331MIDL Midale Zone of Charles Formation 30 331MSNC Mission Canyon Limestone 30 331OTTR Otter Formation of Big Snowy Group 30 337ALMN Allen Mountain Limestone of Madison Group 30 337D D Zone of Mission Canyon Formation 30 337DNLK Dean Lake Chert Member of Madison Limestone 30 337LCFC Little Chief Canyon Member of Lodgepole Limestone 30 337LDGP Lodgepole Limestone of Madison Group 30 337MNRM Monitor Mountain Limestone Member of Madison Limestone 30 337PHSP Pahasapa Limestone 30 337PINE Paine Shale Member of Lodgepole Formation 30 337RONY Rooney Chert Member of Madison Limestone 30 337SLVP Silvertip Conglomerate Member of Madison Limestone 30 337SPNG Sappington Sandstone Member of Three Forks Shale 30 337SYPO Saypo Limestone Member of Madison Limestone 30 337WDRS Woodhurst Limestone Member of Lodgepole Formation 30 340DVNN Devonian System 30 341BRDB Birdbear Formation 30 341BVLK Beaverhill Lake Group or Formation 30 341CPLK Coopers Lake Limestone Member of Jefferson Limestone 30 341DRBY Darby Formation 30 341DUPR Duperow Formation of Jefferson Group 30 341EXSH Exshaw Shale 30 341GLCK Glen Creek Shale Member of Jefferson Limestone 30 341GRDV Grand View Dolomite 30 341JEFF Jefferson Limestone, Dolomite, Formation or Group 30 341LNBT Lone Butte Limestone Member of Jefferson Limestone 30 341NSKU Nisku Formation 30 341PTLC Potlatch Formation or Anhydrite 30 341SPDB Spotted Bear Limestone Member of Jefferson Limestone 30 341SRRV Souris River Formation 30 341TRFK Three Forks Shale 30 341UNON Union Shale 30 341WDBD Woodbend Formation 30 341WRDG White Ridge Limestone Member of Jefferson Limestone 30 344ASRN Ashern Formation 30 344BRTB Beartooth Butte Formation 30 344DSNB Dawson Bay Formation 30 344ELKP Elk Point Group 30 344MYWD Maywood Formation 30 344PRAR Prairie Evaporite Formation of Elk Point Group 30 344WPGS Winnipegosis Formation 30 350IRLK Interlake Formation 30 350LKTN Laketown Dolomite 30 350SLRN Silurian System 30 360DDWD Deadwood Formation 30 360ODVC Ordovician System 30 361BGRN Bighorn Dolomite 30 361GNTN Gunton Member of Stony Mountain Formation 30 361HRDG Harding Sandstone of Bighorn Dolomite 30 361LIGH Leigh Dolomite Member of Bighorn Dolomite 30 361LNDR Lander Sandstone Member of Bighorn Dolomite 30 361RERV Red River Formation of Bighorn Group 30 361SONM Stony Mountain Formation of Bighorn Group 30 361STGN Stoughton Member of Stony Mountain Formation 30 361WHTD Whitewood Dolomite 30 364ALDN Aladdin Sandstone Member of Winnipeg Formation 30 364ICBX Icebox Shale Member of Winnipeg Formation 30 364KNKC Kinnikinic Quartzite 30 364RGCK Roughlock Siltstone 30 364WNPG Winnipeg Formation 30 367EMRS Emerson Formation 30 370BKSP Buck Spring Formation 30 370CMBR Cambrian System 30 370TLDN Tilden Formation 30 371CMBR Cambrian System, Upper 30 371DRBR Dearborn Limestone 30 371DRCK Dry Creek Shale 30 371DUNR Du Noir Limestone Member of Gallatin Limestone 30 371DVLG Devils Glenn Dolomite 30 371GLTN Gallatin Limestone or Formation 30 371GVCK Grove Creek Member of Snowy Range Formation 30 371HMRK Hasmark Formation or Dolomite 30 371OPDR Open Door Limestone 30 371PIGM Pilgrim Limestone or Dolomite 30 371RDLN Red Lion Formation 30 371SCBK Switchback Shale 30 371SORG Snowy Range Formation of Gallatin Group 30 371YOGO Yogo Limestone 30 374ALPR Alpreston Quartzite 30 374DETC Death Canyon Limestone Member of Gros Ventre Formation 30 374DMNN Damnation Limestone 30 374FLTD Flathead Quartzite or Sandstone 30 374GRDN Gordon Shale 30 374GRVR Gros Ventre Formation 30 374MGHR Meagher Limestone 30 374PARKA Park Shale or Argillite 30 374PGOD Pagoda Limestone 30 374PNGN Pentagon Shale 30 374SLVL Silver Hill Formation 30 374WLSY Wolsey Shale or Formation 30 377EMRS Emerson Formation 30 377GRDN Gordon Shale 30 377PGOD Pagoda Limestone 30 377PNGN Pentagon Shale 30 377SCBK Switchback Shale 30 377SLVH Silver Hill Formation 30 377STMB Steamboat Limestone 30 400AHRN Ahorn Quartzite 30 400ALTN Altyn Limestone 30 400APKN Appekunny Formation 30 400BCRD Bouchard Formation of Missoula Group 30 400BELTG Belt Supergroup 30 400BNNR Bonner Quartzite of Missoula Group 30 400BURK Burke Formation of Ravalli Group 30 400CMBL Chamberlain Shale 30 400COOK Cook Granite 30 400CRCK Cherry Creek Group (Pre-belt) 30 400CYUS Cayuse Limestone 30 400EMPR Empire Formation 30 400GCRK Goose Creek Granite 30 400GRNL Grinnell Formation of Ravalli Group 30 400GRRG Garnet Range Quartzite or Formation of Missoula Group 30 400GRRM Greenhorn Mountain Quartzite 30 400GRSN Greyson Shale 30 400GTWY Gateway Formation 30 400HDLY Hoadley Formation 30 400HELN Helena Dolomite 30 400HLGT Hellgate Quartzite Member of Miller Peak Argillite 30 400KNTL Kintla Argillite of Missoula Group 30 400LBBY Libby Formation of Missoula Group 30 400LHOD Lahood Formation 30 400LMHI Lemhi Quartzite 30 400LUPN Lupine Quartzite of Missoula Group 30 400MCMR Mcnamara Argillite or Formation of Missoula Group 30 400MLPK Miller Peak Argillite or Formation of Missoula Group 30 400MRSH Marsh Formation of Missoula Group 30 400MSSL Missoula Group 30 400NHRT Neihart Quartzite 30 400NLND Newland Formation or Limestone 30 400PCMB Precambrian Erathem 30 400PIGN Piegan Group 30 400PLCR Pilcher Quartzite of Missoula Group 30 400PONY Pony Series (Pre-belt) 30 400PRBL Pre-Belt Rocks 30 400PRCD Prichard Formation or Slate 30 400PRCL Purcell Basalt of Missoula Group 30 400RVLLG Ravalli Group of Belt Supergroup 30 400RVTTG Revett Formation of Ravalli Group of Belt Supergroup 30 400SIYH Siyeh Limestone of Piegan Group 30 400SLWY Sloway Formation of Missoula Group 30 400SPKN Spokane Shale 30 400SPPK Striped Peak Formation of Missoula Group 30 400SPRC Spruce Formation of Missoula Group 30 400SPRD Shepard Formation of Missoula Group 30 400SRGSG St Regis Formation of Ravalli Group of Belt Supergroup 30 400STLR Stillwater Complex (Pre-belt) 30 400SWGR Swauger Quartzite 30 400WALC Wallace Formation of Piegan Group 30 420EMPR Empire Formation (Middle Proterozoic) 30 420GRSN Greyson Formation (Middle Proterozoic) 30 420HELN Helena Formation (Middle Proterozoic) 30 420MSLD Mount Shields Formation (Middle Proterozoic) 30 420SPKN Spokane Formation (Middle Proterozoic) 30 420SPRD Shepard Formation (Middle Proterozoic) 30 420SSLP Snowslip Formation (Middle Proterozoic) 30 BASEMENT Basement 30 BEDROCK Bedrock 31 100CNZC Cenozoic Erathem 31 110DUNE Dune Sand 31 110QRNR Quaternary System 31 110SAGR Sand and Gravel Deposits, Undifferentiated 31 110WDBS Windblown Sand Deposits, Undifferentiated 31 111ALVM Holocene Alluvium 31 111HLCN Holocene Series 31 112LOSS Loess 31 112PLPL Plio-Pleistocene, Sand and Gravel Deposits, Undifferentiated 31 112PLSC Pleistocene Series 31 112SDGVD Sand and Gravel Deposits 31 112SDHL Sandhills Deposits 31 112TILL Till 31 120TRTR Tertiary System 31 121OGLL Ogallala Formation 31 121PLCN Pliocene Series 31 122ARIK Arikaree Group 31 122GRNG Gering Formation 31 122HMGF Hemingford Group 31 122HRSN Harrison Sandstone 31 122MOCN Miocene Series 31 122MRCK Monroe Creek Formation 31 122MRLD Marsland Formation 31 122SPCK Sheep Creek Formation 31 123BRUL Brule Formation of White River Group 31 123CDRN Chadron Formation of White River Group 31 123CDRNB Chadron Formation, Basal Sand and Gravel 31 123OLGC Oligocene Series 31 123WRVRG White River Group 31 200MSZC Mesozoic Erathem 31 210CRCS Cretaceous System 31 211BLHL Blue Hill Shale Member of Carlile Shale 31 211CDLL Codell Sandstone Member of Carlile Shale 31 211CLRD Colorado Group 31 211CRCSU Upper Cretaceous Series 31 211CRLL Carlile Shale 31 211DKOT Dakota Sandstone or Formation 31 211FRPR Fairport Chalky Shale Member of Carlile Shale 31 211FTHS Fort Hays Limestone Member of Niobrara Formation 31 211FXHL Fox Hills Formation 31 211GRER Greenhorn Limestone 31 211GRRS Graneros Shale 31 211LNCE Lance Formation 31 211MNTN Montana Group 31 211MNTNU Montana Group, Upper (Lance Formation-Fox Hills Sandstone) 31 211NBRR Niobrara Formation 31 211PIRR Pierre Shale 31 211SMHI Smoky Hill Shale Member of Niobrara Formation 31 217CRCSL Lower Cretaceous Series 31 217D D Sand 31 217FARV Fall River Sandstone 31 217INKR Inyan Kara Group 31 217J J Sand 31 217LKOT Lakota Formation 31 217NCSL Newcastle Sandstone 31 217SKCKS Skull Creek Shale of the Dakota Group 31 220JRSC Jurassic System 31 221JRSCU Upper Jurassic Series 31 221MRSN Morrison Formation 31 221SNDC Sundance Formation 31 230SPRF Spearfish Formation (Triassic-Permian) 31 230TRSC Triassic System 31 300PLZC Paleozoic Erathem 31 310BMCKG Broom Creek Group 31 310CASA Cassa Group 31 310JSLV Janesville Shale 31 310MFLD Matfield Shale 31 310NLNS Nolans Limestone 31 310NNSC Ninnescah Shale 31 310ONAG Onaga Shale 31 310PRMN Permian System 31 311ERVY Ervay Equivalent 31 311FRLL Forelle Limestone 31 311GLND Glendo Shale 31 311PRMNU Upper Permian Series 31 317FLSC Falls City Limestone 31 317FNSN Funston Limestone 31 317OPCH Opeche Shale 31 317PRMNL Lower Permian Series 31 318LNRD Leonardian Series 31 318MNKT Minnekahta Limestone 31 318SCRL Stone Corral Formation 31 319ADMR Admire Group 31 319BDER Bader Limestone 31 319BRNS Barneston Limestone 31 319BRPD Blue Rapids Shale 31 319BTTI Beattie Limestone 31 319CCGV Council Grove Group 31 319CHSE Chase Group 31 319CRUS Crouse Limestone 31 319DOYL Doyle Shale 31 319EKDG Eskridge Shale 31 319ELCK Easley Creek Shale 31 319FRCK Foraker Limestone 31 319GRNL Grenola Limestone 31 319JNSN Johnson Shale 31 319ODEL Odell Shale 31 319RDEG Red Eagle Limestone 31 319ROCA Roca Shale 31 319SPSR Speiser Shale 31 319SRNS Sterns Shale 31 319WFLD Winfield Limestone 31 319WFMP Wolfcampian Series 31 319WRFR Wreford Limestone 31 320PSLV Pennsylvanian System 31 321PSLVU Upper Pennsylvanian Series 31 322ABRN Auburn Shale 31 322BERN Bern Limestone 31 322CASS Cass Limestone 31 322CLHN Calhoun Shale 31 322DGLS Douglas Group 31 322DRCK Deer Creek Limestone 31 322EMPR Emporia Limestone 31 322HWRD Howard Limestone 31 322KNWK Kanwaka Shale 31 322LCMP Lecompton Limestone 31 322LRNC Lawrence Shale 31 322ORED Oread Limestone 31 322PLBR Pillsbury Shale 31 322PLFD Plattford Shale 31 322ROOT Root Shale 31 322SCRN Scranton Shale 31 322SHWN Shawnee Group 31 322SRGR Stranger Formation 31 322STLR Stotler Limestone 31 322SVRY Severy Shale 31 322TCMS Tecumseh Shale 31 322TOPK Topeka Limestone 31 322VRGL Virgilian Series 31 322WBNS Wabaunsee Group 31 322WDSG Wood Siding Shale 31 322WLRD Willard Shale 31 322ZNOL Zeandale Limestone 31 323BSPG Bonner Springs Shale 31 323CANT Chanute Shale of the Kansas City Group 31 323DNNS Dennis Limestone 31 323DRUM Drum Limestone 31 323FONT Fontana Shale 31 323GLBG Galesburg Shale 31 323HRTH Hertha Limestone 31 323IATN Iatan Limestone 31 323IOLA Iola Limestone 31 323KSSC Kansas City Group 31 323LANE Lane Shale 31 323LDOR Ladore Shale 31 323LNSG Lansing Group 31 323MSSR Missourian Series 31 323PEDE Pedee Group 31 323PLBG Plattsburg Limestone 31 323PLSN Pleasanton Group 31 323QUIV Quivira Shale Member of Cherryvale Formation 31 323SRPY Sarpy Formation 31 323STNN Stanton Limestone 31 323SWOP Swope Limestone 31 323VILS Vilas Shale 31 323WNDT Wyandotte Limestone 31 323WSTN Weston Shale 31 324PSLVM Middle Pennsylvanian Series 31 325ALMN Altamont Limestone 31 325ARDM Ardmore Limestone 31 325BNDR Bandera Shale 31 325CHRK Cherokee Group 31 325DSMS Des Moinesian Series 31 325FRSC Fort Scott Limestone 31 325LBTT Labette Shale 31 325MRMN Marmaton Group 31 325NOWT Nowata Shale 31 325PWNE Pawnee Limestone 31 330CTNG Chattanooga Shale 31 330MSSP Mississippian System 31 331MSSPU Mississippian, Upper 31 333MRMC Meramecian Series 31 333SGVV Ste. Genevieve Limestone 31 333SLEM Salem Limestone 31 333SPRGT Spergen Limestone 31 333STLS St. Louis Limestone 31 333WRSW Warsaw Formation 31 337MSSPL Mississippian, Lower 31 338KKKB Keokuk-Burlington Limestones, Undifferentiated 31 338OSGE Osagean Series 31 339BOIC Boice Shale 31 339GLMC Gilmore City Limestone 31 339HMPN Hampton Formation 31 339KDRK Kinderhookian Series 31 340DVNN Devonian System 31 341DVNNU Devonian, Upper 31 341LMCK Lime Creek Formation 31 344CDVL Cedar Valley Limestone 31 344DVNNM Devonian, Middle 31 344WPPC Wapsipinicon Limestone 31 350SLRN Silurian System 31 354SLRNM Silurian, Middle 31 355GOWR Gower Formation 31 355HPKN Hopkinton Formation 31 355NGRN Niagaran Series 31 357KNKK Kankakee Formation 31 360ODVC Ordovician System 31 361MQKT Maquoketa Shale 31 361ODVCU Ordovician, Upper 31 362CNCN Cincinnatian Series 31 364DCRH Decorah Formation 31 364GLEN Galena Dolomite 31 364ODVCM Ordovician, Middle 31 364PLVL Platteville Formation 31 364STPR St Peter Sandstone 31 365CMPL Champlainian Series 31 367ODVCL Ordovician, Lower 31 367PRDCG Prairie Du Chien Group 31 368CNDN Canadian Series 31 370CMBR Cambrian System 31 371CMBRU Cambrian, Upper 31 371DRBC Dresbach Group 31 371FRNC Franconia Sandstone 31 371TMPL Trempealeau Formation 31 400IGNS Precambrian Igneous Rocks 31 400MMPC Precambrian Metamorphic Rocks 31 400MMRP Metamorphic Rocks Undifferentiated 31 400PCMB Precambrian Erathem 31 400SOUX Sioux Quartzite 31 BASEMENT Basement 31 BEDROCK Bedrock 32 100CLDD Consolidated Rocks 32 100VFRV Valley-Fill Reservoir 32 100VLFL Valley Fill 32 110CLDD Consolidated Deposits 32 110LSVG Las Vegas Formation 32 110QRNR Quaternary System 32 110UCDD Unconsolidated Deposits 32 110VLCC Volcanic Rocks 32 110VLFL Valley Fill 32 111ALVF Alluvial Fan Deposits 32 111ALVFY Alluvial-Fan Deposits, Younger 32 111ALVM Holocene Alluvium 32 111ALVMY Alluvium, Younger 32 111CLVM Colluvium 32 111CNNL Channel Deposits 32 111DUNE Dune Sand 32 111FLDP Flood-Plain Deposits 32 111GVLB Gravel-Bar Deposits 32 111HLCN Holocene Series 32 111LDLD Landslide Deposits 32 111LKBP Lakebeds and Playa Deposits 32 111PLAY Playa Deposits 32 111SNTR Sinter Deposits 32 111TUFF Tuffa Deposits 32 112ALVFO Alluvial-Fan Deposits, Older 32 112ALVMO Alluvium, Older 32 112BBRG Basalt of Basalt Ridge 32 112BRGR Brougher Dacite 32 112DUNE Dunes, Pleistocene 32 112FGLM Fanglomerate 32 112GLCL Glacial Deposits 32 112HCMP Horse Camp Formation 32 112LKBDD Lake Bed Deposits 32 112LKBP Lakebeds and Playa Deposits 32 112ODDI Oddie Rhyolite 32 112PLSC Pleistocene Series 32 112RBSP Rabbit Spring Formation 32 112SNTR Sinter Deposits 32 112TUFF Tuffa Deposits 32 112VLCC Volcanic Rocks 32 120CCOV Charcoal Oven Tuff 32 120CLDD Consolidated Deposits 32 120CRNT Currant Tuff 32 120GLHL Gale Hills Formation (Possibly Cretaceous) 32 120GRNC Granitic Rocks 32 120HSPG Horse Spring Formation 32 120IDVD Ida Vada Volcanics 32 120JPRD Jasperoid Breccia 32 120KNSC Kinsey Canyon Formation 32 120OVRN Overton Formation (Possibly Cretaceous) 32 120PANC Panaca Beds 32 120PKSM Pancake Summit Tuff 32 120PNSL Pansy Lee Conglomerate 32 120SDMR Sedimentary Rocks 32 120SGLP Shingle Pass Tuff 32 120SNCB Stone Cabin Tuff 32 120TRTR Tertiary System 32 120VLCC Volcanic Rocks 32 120WDSB Windous Butte Formation 32 121ALVFO Alluvial-Fan Deposits, Older 32 121ALVMO Alluvium, Older 32 121AMTK Ammonia Tanks Member 32 121CNDC Cottonwood Canyon Formation 32 121EMLD Esmeralda Formation 32 121GLDF Gold Flat Member 32 121HDCF Hidden Cliff Trachyte 32 121HGRK High Rock Sequence 32 121HMBD Humboldt Formation 32 121KTPK Kate Peak Formation 32 121LBRC Labyrinth Canyon Member 32 121MDCK Muddy Creek Formation 32 121PANC Panaca Formation 32 121PLCN Pliocene Series 32 121PSPG Pillar Spring Rhyolite 32 121RBCF Ribbon Cliff Rhyolite 32 121RRMS Rainier Mesa Member 32 121SBRT Siebert Tuff 32 121SLLK Salt Lake Formation 32 121SNLM Stonewall Mountain Basalt 32 121TMBM Timber Mountain Rhyolite 32 121TRCK Truckee Formation 32 121TRSC Thirsty Canyon Tuff 32 121TRSR Trail Ridge, Spearhead and Rocket Wash Members of Thirsty Canyon Tuff 32 121YLCF Yellow Cleft Trachyte 32 122ALTA Alta Formation 32 122APSP Antelope Springs Tuffs 32 122AR20 Tuffs and Rhyolites of Area 20 32 122BCKR Buckwheat Rim Tuff 32 122BDRG Belted Range Tuff 32 122BKBM Black Beauty Mesa Tuff 32 122BSMN Bates Mountain Tuff 32 122BSSV Big Sand Springs Valley Rhyolite 32 122CCPK Cactus Peak Rhyolite 32 122CHSP Chispa Andesite 32 122CNON Canon Rhyolite 32 122CRFL Crater Flat Tuff 32 122DDHF Lava and Tuff of Dead Horse Flat 32 122EDCK Edwards Creek Tuff 32 122EMLD Esmeralda Formation 32 122FCKM Fish Creek Mountains Tuff 32 122FRCN Fraction Tuff 32 122GLDF Gold Flat Tuff and Rhyolite 32 122GRSC Grouse Canyon Member 32 122HFDH Hartford Hill Rhyolite Tuff 32 122HULP Hualapai Limestone 32 122IDTL Indian Trail Formation 32 122KCVL Kawich Valley Rhyolite 32 122KNDL Kendall Tuff 32 122LRCS Lunar Cuesta Tuff 32 122MIRA Mira Basalt 32 122MLTN Milltown Andesite 32 122MOCN Miocene Series 32 122MORN Morena Rhyolite 32 122NPSS New Pass Tuff 32 122OBKB O Briens Knob Rhyolite 32 122ORBP Ocher Ridge and Belted Peak Rhyolite 32 122PBRS Paintbrush Tuff 32 122PCNN Pah Canyon Member 32 122PEMD Pre-Esmeralda Volcanic Rocks 32 122PRMD Pyramid Sequence 32 122QRDM Quartet Dome Rhyolite 32 122QRZM Quartz Mountain Rhyolite 32 122SCKW Stockade Wash Member 32 122SCRM Saucer Mesa Trachyte 32 122SDRM Sandstorm Rhyolite 32 122SLFL Stonewall Flat Andesite 32 122SLYR Salyer Formation 32 122TBSP Tub Springs Member 32 122TCPK Tolicha Peak Tuff 32 122TPPS Topopah Spring Member 32 122TVCN Tiva Canyon Member 32 122VDCR Vindicator Rhyolite 32 122VLCC Volcanic Rocks 32 122WBSP White Blotch Spring Tuff 32 122WCMP Wilsons Camp Tuff 32 122WHMN Wahmonie Formation 32 122WRDG White Ridge Rhyolite 32 123BGRV Big Round Valley Tuff 32 123BKRS Black Rock Summitt Tuff 32 123CLWL Calloway Well Formation 32 123CTNO Caetano Tuff 32 123GMGC Gilmore Gulch Formation 32 123HCKC Hot Creek Canyon Tuff 32 123HFDH Hartford Hill Rhyolite 32 123HLGM Halligan Mesa Tuff 32 123MNTN Monotony Tuff 32 123MRSB Moores Station Butte Tuff 32 123MZPH Mizpah Trachyte 32 123NDLS The Needles Tuff 32 123NDRG Needles Range Formation 32 123OLCK Orange Lichen Creek Tuff 32 123OLGC Oligocene Series 32 123PCDS Prichards Station 32 123PHLV Pott Hole Valley Tuff 32 123PHRH Pah Rah Formation 32 123PLDM Palisade Mesa Tuff 32 123RRKC Red Rock Canyon Tuff 32 123STWL South Willow Formation 32 123TNPH Tonopah Formation 32 123TPKS Twin Peaks Tuff 32 123TSCN Titus Canyon Formation 32 123WRMP Williams Ridge and Morey Peak Tuff 32 124SPPS Sheep Pass Formation 32 200GRNC Granitic Rocks 32 200MMPC Metamorphic Rocks 32 200SDMR Sedimentary Rocks 32 210CKCC Chokecherry Canyon Formation 32 210GDVL Garden Valley Formation 32 210GRNC Granitic Rocks 32 210IRSV Intrusive Rocks 32 210KGLR King Lear Formation 32 210NRKC Newark Canyon Formation 32 210THMB Thumb Formation 32 210WLTK Willow Tank Formation 32 210WVRC Weaver Canyon Breccia 32 220AZTC Aztec Sandstone 32 220GRNC Granitic Rocks 32 220NGGL Nightingale Sequence 32 220PVIN Peavine Sequence 32 227DNLP Dunlap Formation 32 230AGST Augusta Sequence 32 230CSPG Cane Spring Formation 32 230DNGL Dun Glen Formation 32 230DXVL Dixie Valley Formation 32 230EXCL Excelsior Formation 32 230MNKP Moenkopi Formation 32 230NCZP Natchez Pass Formation 32 230PRID Pride Formation 32 230RSPB Raspberry Formation 32 230SRPK Star Peak Group 32 230TOBN Tobin Formation 32 230WNMC Winnemucca Formation 32 231CHNL Chinle Formation 32 231CSPG Crane Spring Formation 32 231GBBS Gabbs Formation 32 231GRVL Grass Valley Formation 32 231LNNG Luning Formation 32 231OSBB Osobb Formation 32 231SUNR Sunrise Formation 32 234AGSM Augusta Mountain Formation 32 234CNMN China Mountain Formation 32 234FVRT Favret Formation 32 234GRVL Grantsville Formation 32 234PNRC Panther Canyon Formation 32 237CDLR Candelaria Formation 32 237QRVR Quinn River Formation 32 300CCSM Clastic Sedimentary Rocks 32 300CRBN Carbonate Rocks 32 300MMPC Metamorphic Rocks 32 300RGWS Regional Groundwater System 32 310ALPK Antler Peak Limestone 32 310ANLR Antler Sequence 32 310ARCR Arcturus Formation 32 310BTTL Battle Formation 32 310CBRG Carbon Ridge Formation 32 310CCNN Coconino Formation 32 310DBLO Diablo Formation 32 310EDNM Edna Mountain Formation 32 310GRDR Grandeur Formation 32 310GRSR Gerster Formation 32 310HGHY Highway Limestone 32 310HPCK Happy Creek Volcanic Series 32 310HVLL Havallah Sequence 32 310KIBB Kaibab Limestone 32 310KOPT Koipata Group 32 310LORY Loray Formation 32 310MEAD Meade Peak Formation 32 310PBLO Pablo Formation 32 310PLMP Plympton Formation 32 310PQUP Pequop Formation 32 310PRKCG Park City Group 32 310PSPR Phosphoria Formation 32 310RBHL Rib Hill Formation 32 310RPSP Riepe Spring Formation 32 310TPPP Tippipah Limestone 32 310TRWP Toroweap Formation 32 313GUDP Guadalupian Rocks 32 317BSPG Bird Spring Formation 32 317CLVL Callville Limestone 32 320BCKC Brock Canyon Formation 32 320ELY Ely Limestone 32 320HVLL Havallah Formation 32 320ISKP Inskip Formation 32 320KOPT Koipato Formation 32 320PMPK Pumpernickel Formation 32 320WCPK Wildcat Peak Formation 32 324ELY Ely Limestone 32 327ELEN Eleana Formation 32 330JOAN Joana Limestone 32 330LECH Leach Formation 32 330RGSP Rogers Spring Limestone 32 331CNMN Chainman Shale 32 331DMPK Diamond Peak Formation 32 331MCRS Monte Cristo Limestone 32 331MKLJ Meiklejohn Formation 32 337PLOT Pilot Shale 32 340DVMP Mississippian-Devonian Systems 32 340DVNN Devonian System 32 340SLVN Slaven Chert 32 341GLMT Guilmette Formation 32 341SLTNM Sultan Limestone 32 344FLPC Fluorspar Canyon Formation 32 344MDPK Muddy Peak Limestone 32 344NEVD Nevada Formation 32 344SEVY Sevy Dolomite 32 344SMNS Simonson Dolomite 32 350ELDR Elder Sandstone 32 350ESPG Ely Springs Dolomite 32 350HCRK Hanson Creek Dolomite 32 350LKTN Laketown Dolomite 32 350LNMN Lone Mountain Dolomite 32 350MCMG Mc Monnigal Limestone 32 350SLRN Silurian System 32 350TOR Tor Limestone 32 354RBRM Roberts Mountain Formation 32 360ALPV Antelope Valley Limestone 32 360BRDC Broad Canyon Formation 32 360CLPC Clipper Canyon Sequence 32 360CMUS Comus Formation 32 360GCLF Gatecliff Formation 32 360MSKT Masket Shale 32 360NNML Ninemile Formation 32 360ODVC Ordovician System 32 360PLMT Palmetto Formation 32 360PNCN Pinecone Sequence 32 360SMRG Sonoma Range Formation 32 360VINN Vinini Formation 32 360VLMY Valmy Formation 32 360WLCN Willow Canyon Sequence 32 361EURK Eureka Quartzite 32 361FSHV Fish Haven Dolomite 32 364ALPV Antelope Valley Limestone 32 364ESPG Ely Springs Dolomite 32 364PGNP Pogonip Group 32 367GDWN Goodwin Limestone 32 367NNML Nine Mile Formation 32 370CBPB Cambrian System-Precambrian Erathem 32 370CMBR Cambrian System 32 370GDPG Goodsprings Dolomite 32 370GLDH Gold Hill Formation 32 370HRMN Harmony Formation 32 370LCPK Lincoln Peak Formation 32 370LMSN Cambrian Limestone 32 370OGDM Osgood Mountain Quartzite 32 370PDBG Post-Dunderburg Shale 32 370PLCN Pole Canyon Limestone 32 370PRBL Preble Formation 32 370SBCK Swarbrick Formation 32 370SLLK Stella Lake Quartzite 32 370TYBO Tybo Shale 32 370WDCN Wood Canyon Formation 32 370WDFL Windfall Limestone 32 371BZKG Bonanza King Formation 32 371CRNCM Crane Canyon Formation 32 371CSPG Corset Spring Shale 32 371DDBG Dunderburg Shale 32 371EMGRM Emigrant Formation 32 371HLES Hales Limestone 32 371HLFP Halfpint Member of Nopah Formation 32 371HMBG Hamburg Dolomite 32 371NCPK Notch Peak Limestone 32 371NOPH Nopah Formation 32 371SHWN Shwin Formation 32 371SMKM Smoky Member of Nopah Formation 32 374CRRR Carrara Formation 32 374CSLM Chisholm Shale 32 374ELDDL Eldorado Dolomite 32 374HGPK Highland Peak Limestone 32 374LNDN Lyndon Limestone 32 374POCH Pioche Shale 32 374TPTSL Lower Tapeats Sandstone 32 377CRRR Carrara Formation 32 377HRKL Harkless Formation 32 377MLRM Miller Mountain Formation 32 377MSPG Mule Spring Formation 32 377POLT Poleta Formation 32 377PPCM Prospect Mountain Quartzite 32 377SCCN Scott Canyon Formation 32 377ZBRK Zabriskie Quartzite 32 400CMPT Campito Formation 32 400DPSP Deep Spring Formation 32 400JHNN Johnnie Formation 32 400MCCK Mc Coy Creek Group 32 400PCMB Precambrian Erathem 32 400REED Reed Dolomite 32 400SRLG Stirling Quartzite 32 400WYMN Wyman Formation 32 BASEMENT Basement 32 BEDROCK Bedrock 33 110AUVM Alluvium, Quaternary (Holocene or Pleistocene, Unknown) 33 110BECHM Beach Deposits (Marine & Non-Marine), Quaternary 33 110COVM Colluvium, Quaternary (Holocene or Pleistocene, Unknown) 33 110DELT Delta Deposit, Quaternary (Holocent or Pleistocene, Unknown) 33 110EOLN Eolian Deposits, Quaternary (Holocene or Pleistocene, Unk) 33 110FAN Alluvial Fan, Quaternary (Holocene or Pleistocene, Unk) 33 110LAKE Lake Deposit, Quaternary (Holocene or Pleistocene, Unknown) 33 110LDLD Landslide, Quaternary (Holocene or Pleistocene, Unknown) 33 110MRER Marine & Estuarine Deposits, Quaternary 33 110NRSR Nearshore Deposits (Marine & Non-Marine), Quaternary 33 110SDMN Sediments, Undifferentiated, Quaternary 33 110SOIL Soil, Quaternary (Holocene or Pleistocene, Unknown) 33 110TLUS Talus, Quaternary (Holocene or Pleistocene, Unknown) 33 111ALVM Holocene Alluvium 33 111BECHM Beach Deposits, Marine & Non-Marine, Holocene 33 111CLVM Colluvium 33 111DELT Delta Deposit, Holocene 33 111DUNES Dunes, Holocene 33 111EOLN Eolian Deposits 33 111FAN Alluvial Fan, Holocene 33 111FILL Fill 33 111LAKE Lake Deposits 33 111LDSD Landslide, Holocene 33 111MRER Marine & Estuarine Deposits, Holocene 33 111MRIN Marine Deposits 33 111NRSR Nearshore Deposits (Marine & Non-Marine), Holocene 33 111SDMN Sediments, Undifferentiated 33 111SLMR Salt-Marsh Deposits 33 111SOIL Soil 33 111SWMP Swamp Deposits 33 111TLUS Talus, Holocene 33 112ABLN Ablation Till, Pleistocene 33 112BECHM Beach (Marine and Non-Marine), Pleistocene 33 112DELT Delta Deposits 33 112DRML Drumlins 33 112DUNE Dunes, Pleistocene 33 112EKCV Esker & Crevasse Filling, Pleistocene 33 112EOLN Eolian Deposits 33 112GCFV Glacio-Fluvial, Undifferentiated, Pleistocene 33 112GLCU Glacial Deposits, Undifferentiated 33 112ICCC Ice-Contact Deposits, Pleistocene 33 112KAME Kame, Pleistocene 33 112KMTC Kame Terrace Deposits 33 112LCSR Lacustrine Deposits 33 112LDGM Lodgement Till, Pleistocene 33 112MORND Moraine Deposits, Except Ground Moraine and Drumlins 33 112MRINE Marine Deposits (May Include Estuarine Deposits) 33 112NRSR Nearshore Deposits (Marine & Non-Marine), Pleistocene 33 112OSDL Outwash Delta Deposit, Pleistocene 33 112OTSH Outwash 33 112SOIL Soil, Pleistocene 33 112SRFD Stratified Deposits, Undifferentiated 33 112TILL Till 33 120SDMS Sediments 33 200CRSL Crystalline Rocks 33 210DORT Diorite, Cretaceous 33 210MNZN Monzonite, Cretaceous 33 210SDMS Sediments, Undifferentiated 33 230IGNSE Igneous Rocks, Extrusive 33 230IGNSI Igneous Rocks, Intrusive 33 230SDMR Triassic Sedimentary Rocks 33 231EBRL East Berlin Formation 33 231HLYK Holyoke Basalt 33 231HMPD Hampden Basalt 33 231NHVN New Haven Formation 33 231PRLD Portland Formation 33 300CRSL Crystalline Rocks, Undifferentiated 33 300CRSLC Crystalline Rocks, Carbonate 33 300CRSLN Crystalline Rocks, Noncarbonate 33 320CRSL Crystalline Rocks 33 320SDMR Sedimentary Rocks 33 330BRGR Binary Granite, Mississippian & Devonian 33 330CRSL Crystalline Rocks 33 330SDMR Sedimentary Rocks 33 340BGRN Biotite Granite, Devonian 33 340CRSL Crystalline Rocks, Undifferentiated 33 340CRSLC Crystalline Rocks, Carbonate 33 340CRSLN Crystalline Rocks, Noncarbonate 33 340DORT Diorite, Devonian 33 340TNLT Tonalite, Devonian 33 350AYER Ayer Granodiorite, Silurian 33 350CRSL Crystalline Rocks, Undifferentiated 33 350CRSLC Crystalline Rocks, Carbonate 33 350CRSLN Crystalline Rocks, Noncarbonate 33 354PRMN Perry Mountain Formation, Middle Silurian 33 357RNGL Rangeley Formation, Lower Silurian 33 360BRCK Berwick Formation, Ordovician To Precambrian 33 360BRCKU Berwick Formation (Upper Part), Ordovician To Precambrian 33 360CLEF Calef Member of Eliot Formation, Ordovician To Precambrian 33 360CRSL Crystalline Rocks, Undifferentiated 33 360CRSLC Crystalline Rocks, Carbonate 33 360CRSLN Crystalline Rocks, Noncarbonate 33 360ELOT Eliot Formation, Ordovician To Precambrian 33 360GOVE Gove Member of Berwick Formation, Ordovician To Precambrian 33 360KTTR Kittery Formation, Ordovician To Precambrian 33 360MSBC Massabesic Gneiss Complex, Ordovician To Precambrian 33 360NBRPG Newburyport Complex (Granite), Ordovician 33 360NBRPT Newburyport Complex (Tonalite), Ordovician 33 370CRSL Crystalline Rocks, Undifferentiated 33 370CRSLC Crystalline Rocks, Carbonate 33 370CRSLN Crystalline Rocks, Noncarbonate 33 400CRSL Crystalline Rocks, Undifferentiated 33 400CRSLC Crystalline Rocks, Carbonate 33 400CRSLN Crystalline Rocks, Noncarbonate 33 410RYE Rye Formation, Precambrian 33 BASEMENT Basement 33 BEDROCK Bedrock 34 100CNZC Cenozoic Erathem 34 110QRNR Quaternary System 34 111ALVM Holocene Alluvium 34 111HLCN Holocene Series 34 111HPPM Undifferentiated Holocene, Pleistocene, Pliocene, and Miocene 34 111SWMP Swamp Deposits 34 112BRDG Bridgeton Formation 34 112CPMY Cape May Formation 34 112DELC Deltaic Sand Facies 34 112ESRNC Estuarine Clay Facies 34 112ESRNS Estuarine Sand Facies 34 112GCLK Glacial Lake Deposits 34 112GKMK Kame and Kame Terrace Deposits 34 112GLCD Glacial Delta Deposits 34 112HLBC Holly Beach Water-Bearing Zone 34 112MORN Moraine 34 112MRINS Marine Sand Facies 34 112PKBG Pensauken-Bridgeton Formations 34 112PLSC Pleistocene Series 34 112PLSCC Pleistocene Series-Cohansey Sand 34 112PNSK Pensauken Formation 34 112SFDF Stratified Drift 34 112TILL Till 34 120TRTR Tertiary System 34 121BCHL Beacon Hill Gravel 34 121CKKD Cohansey Sand-Kirkwood Formation 34 121CNSY Cohansey Sand 34 121PCMC Pliocene-Miocene Series 34 121PLCN Pliocene Series 34 122KRKD Kirkwood Formation 34 122KRKDL Kirkwood Formation, Lower Sand 34 122KRKDU Kirkwood Formation, Upper Sand 34 122MOCN Miocene Series 34 123OLGC Oligocene Series 34 124EOCN Eocene Series 34 124MNSQ Manasquan Formation 34 124MQVC Manasquan-Vincentown Formations 34 124PNPN Piney Point Formation 34 124SKRV Shark River Marl 34 125HORR Hornerstown Sand 34 125PLCN Paleocene Series 34 125VCHR Vincetown Formation-Hornerstown Sand 34 125VNCN Vincentown Formation 34 200MSZC Mesozoic Erathem 34 210CRCS Cretaceous System 34 211EGLS Englishtown Formation 34 211FRNG Farrington Sand Member of Raritan Formation 34 211MCVL Merchantville Formation 34 211MGRR Magothy-Raritan Formations 34 211MGTY Magothy Formation 34 211MLRL Mount Laurel Sand 34 211MLRW Mount Laurel Sand-Wenonah Formation 34 211MRPA Magothy-Raritan-Potomac Aquifer System, Undifferentiated 34 211MRPAL Magothy-Raritan-Potomac Aquifer System, Lower Aquifer 34 211MRPAM Magothy-Raritan-Potomac Aquifer System, Middle Aquifer 34 211MRPAU Magothy-Raritan-Potomac Aquifer System, Upper Aquifer 34 211MRSL Marshalltown Formation 34 211NVSK Navesink Formation 34 211ODBG Old Bridge Sand Member of Magothy Formation 34 211RDBK Red Bank Sand 34 211RRTN Raritan Formation 34 211SRVL Sayreville Sand Member of Raritan Formation 34 211TNTN Tinton Sand 34 211WBMV Woodbury Clay-Merchantville Formation 34 211WDBR Woodbury Clay 34 211WNNH Wenonah Formation 34 217POMC Potomac Group 34 227BNTN Boonton Formation 34 227BRCK Brunswick Group 34 227BRCKS Brunswick Group Sedimentary 34 227BSLT Basalt 34 227CGLM Conglomerate 34 227DIBS Diabase 34 227FLVL Feltville Formation 34 227HKMN Hook Mountain Basalt 34 227NWRK Newark Supergroup 34 227ORGM Orange Mountain Basalt 34 227PRKS Preakness Basalt 34 227PSSC Passaic Formation 34 227TOWC Towaco Formation 34 230TRSC Triassic System 34 231CGLMU Unclassified Conglomerates 34 231HMCK Hammer Creek Formation 34 231LCKG Lockatong Formation 34 231LMCG Limestone Conglomerate 34 231QRCG Quartzite Formation 34 231SCKN Stockton Formation 34 300PLZC Paleozoic Erathem 34 300WICKG Wissahickon Gneiss 34 324KTTNL Lower Kittatiny Limestone 34 324KTTNM Middle Kittatiny Limestone 34 340DVNN Devonian System 34 341SKMK Skunnemunk Conglomerate 34 344BLVL Bellvale Sandstone 34 344CRNL Cornwall Shale 34 344ESPS Esopus Formation 34 344KNUS Kanouse Sandstone 34 344MRCL Marcellus Shale 34 344ONDG Onondaga Limestone 34 347COMS Coeymans Formation 34 347DEPU Depue Limestone Member of Coeymans Formation 34 347DNVL Duttonville Member of Rondout Formation 34 347FBKV Flatbrookville Member of New Scotland Formation 34 347KKBG Kalkberg Limestone 34 347MAKZ Maskenozha Member 34 347MNSK Minisink Limestone 34 347MPCG Mashipacong Member of Rondout Formation 34 347NESC New Scotland Formation 34 347ORSK Oriskany Formation 34 347PREN Port Ewen Shale 34 347PRVL Peters Valley Member of Coeymans Formation 34 347RNDT Rondout Formation 34 347RVEN Ravena Member of Coeymans Limestone 34 347SILD Shawnee Island Member of Coeymans Formation 34 347SMVL Stormville Member of Coeymans Formation 34 347TCKR Thacker Member of Manlius Limestone 34 347WTPR Whiteport Dolomite Member of Rondout Formation 34 350GRPD Green Pond Conglomerate 34 350HGFL High Falls Formation 34 350SLRN Silurian System 34 351BODV Bossardville Limestone 34 351CVBK Clove Brook Member of Decker Formation 34 351DCKR Decker Formation 34 351LNGD Longwood Shale 34 351PXID Poxono Island Formation 34 351WPKC Wallpack Center Member of Decker Formation 34 354SNGK Shawangunk Formation 34 360KTTN Kittatinny Limestone 34 360ODVC Ordovician System 34 361BUKL Bushkill Member of Martinsburg Shale 34 361MRBG Martinsburg Shale 34 361PAGL Pen Argyl Member of Martinsburg Shale 34 361RMBG Ramseyburg Member of Martinsburg Shale 34 364JAKB Jacksonburg Limestone 34 367EPLR Epler Formation 34 367KTTNU Upper Kittatiny Limestone 34 367RIKB Rickenbach Dolomite 34 370CMBR Cambrian System 34 371ALNN Allentown Dolomite 34 374LSVL Leithsville Formation 34 377HRDS Hardyston Quartzite 34 400BLMR Baltimore Gneiss 34 400FRKL Franklin Limestone 34 400PCMB Precambrian Erathem 34 BASEMENT Basement 34 BEDROCK Bedrock 35 000EXRV Extrusive Rocks 35 000ICRC Incarnacion Granite 35 000IRSV Intrusive Rocks 35 100LFVR Las Feveras Formation 35 110ALVM Quaternary Alluvium 35 110AVMB Alluvium, Bolson Deposits and Other Surface Deposits 35 110BLSN Bolson Fill 35 110CHCO Chico Phonolites 35 110CLTN Clayton Basalts 35 110CNJL Canjilon Till 35 110CNNS Canones Andesite 35 110GTUN Gatuna Formation 35 110JRND Jornadan Series 35 110LOBT Lobato Basaltic Lavas 35 110NTGU Naha and Tsegi alluvium deposits, undifferentiated 35 110OPTOD Pediment, Terrace, and Other Deposits of Gravel, Sand, and Caliche 35 110PLMS Palomasan Series 35 110PTODC Pediment, Terrace, and Other Deposits of Gravel, Sand and Caliche 35 110RDMN Red Mountain Dacites 35 110SCLR Santa Clara Pumice Bed 35 110SLGL Slagle Trachyte 35 110TRKM Turkey Mountain Andesite 35 110TURT Tuerto Gravel of Santa Fe Group 35 110UVRS University Beds 35 110VLCT Vallecito Basalt 35 111ALVM Holocene Alluvium 35 111CPLN Capulin Basalts 35 111CRMS Covered/Reclaimed Mine Spoil 35 111CRMSA Covered/Reclaimed Mine Spoil and Ash 35 111CRZZ Carrizozo Lava Flow 35 111GMRC Gamerco Formation 35 111LBKP Little Black Peak Basalt Flow 35 111MCCR Mc Cartys Basalt Flow 35 111MCLR Mescalero Sands 35 111MSOV Mined and Subsided Overburden 35 111NKBT Nakaibito Formation 35 111SPOL Spoil 35 111ZNCN Zuni Canyon Basalt Flow 35 112ANCH Ancha Formation, Upper Part of Santa Fe Group 35 112BDLR Bandelier Rhyolite Tuff of Tewa Group 35 112BKBK Broken Back Basalt Flow 35 112BLSP Battleship Rock Flow 35 112BLTR Blue Water Basalt Flow 35 112BNCB Banco Bonito Flows 35 112CLVS Clovis Beds 35 112CRRB Cerro Rubio Quartz Latite of Tewa Group 35 112CTLD Cerro Toledo Rhyolite of Tewa Group 35 112CURB Cuerbio Basalt 35 112ELCJ El Cajete Flow 35 112GUJE Guaje Member of Bandelier Tuff of Tewa Group 35 112LGUN Laguna Basalt Flow 35 112OTOW Otowi Member of Bandelier Tuff of Tewo Group 35 112PLMS Palomas Gravel 35 112SNDC Sand Canyon Formation 35 112SNJN San Jon Formation 35 112SNTF Santa Fe Group 35 112SNTFU Santa Fe Group, Upper Part 35 112SUWN Suwanee Basalt Flow 35 112TEWA Tewa Group 35 112TSRG Tshirege Member of Bandelier Tuff of Tewa Group 35 112VLLS Valles Rhyolite of Tewa Group 35 112WLND Wheatland Formation 35 120ABQQ Albuquerque Marl 35 120AMLI Amalia Formation 35 120ARBN Arriban Series 35 120BRLM Bearwallow Mountain Andesite 35 120CBBC Caballo Blanco Rhyolite Tuff 35 120CGLB Cieneguilla Limburgite 35 120CGLM Conglomerate of Tertiary Age 35 120CNJS Conejos Quartz Latite (Potosi Volcanic Series) 35 120CONY Cooney Quartz Latite 35 120CRNK Cranktown Sandstone 35 120CRSN Carson Conglomerate 35 120CRSNU Carson Conglomerate, Upper Part 35 120DDGC Deadwood Gulch Rhyolite Tuff 35 120DEZA Deza Formation 35 120DGGC Dog Gulch Formation 35 120DTIL Datil Formation 35 120DTILB Datil Formation (Latite Breccias, Flow-Banded Latite, Andesite, Rhyoli 35 120DTILC Datil Formation (Clastic Rocks of Volcanic Fragments) 35 120DTILD Datil Formation (Boulder Beds and Coarse Clastic Rocks, Mostly Volcani 35 120DTILP Datil Formation (Pumiceous Tuff and Breccia) 35 120DTILW Datil Formation (Welded and Crystal Rhyolite Tuffs, Flows and Breccias 35 120ELRT El Rito Formation 35 120ESPS Espinosa Volcanics 35 120FNNY Fanney Rhyolite 35 120HSTN Houston Andesite 35 120LFKN Lufkin Rhyolite 35 120LOBO Lobo Formation 35 120LRPK Latir Peak Latite 35 120LSCC Last Chance Andesite 35 120LVRC Love Ranch Formation of Kottlowski and Others 35 120MAYA Maya Conglomerate 35 120MBPK Mimbres Peak Formation 35 120MCHO Macho Pyroxene Andesites 35 120MCRE Mc Rae Formation 35 120MGLN Mogollon Andesite 35 120MLCK Mineral Creek Andesite 35 120MNGS Mangas Quartzite 35 120MNMN Monument Andesite 35 120PCFC Pacific Quartz Latite 35 120PLCK Pollack Quartz Latite 35 120POTS Potosi Volcanic Series 35 120PUYE Puye Conglomerate, Upper Part of Santa Fe Group 35 120RGRD Rio Grande Gravels 35 120RZBK Razorback Formation 35 120SBLC Sierra Blanca Volcanics 35 120SGMP Sugarlump Tuffs 35 120SLDN Selden Basalt Tongue 35 120WMVL Wimsattville Formation 35 120WRCK Whitewater Creek Rhyolite 35 121BDHC Bidahochi Formation 35 121BDHCL Bidahochi Formation, Lower 35 121BDHCM Bidahochi Formation, Middle 35 121BDHCU Bidahochi Formation, Upper 35 121BGTB Bridge Timber Gravel 35 121CHSK Chuska Sandstone 35 121CRDT Cordito Member of Los Pinos Formation 35 121CSRS Cisneros Basalt 35 121DORD Dorado Basalt 35 121EGLN Eagle Nest Formation 35 121GILA Gila Conglomerate (Group) 35 121JRIT Jarita Basalt of Las Pinas Formation 35 121LSPS Los Pinos Gravel Member of Hinsdale Formation 35 121MMBR Mimbres Conglomerate 35 121OGLL Ogallala Formation 35 121PLCT Placita Marl 35 121PUYEF Puye Conglomerate, Fanglomerate Member 35 121SRNG Sierra Negra Basalt 35 121TCCM Tschicoma Formation 35 121TOTV Totavi Lentil of Puye Conglomerate 35 121TSUQ Tesuque Formation, Undifferentiated Unit 35 122ABQU Abiquiu Tuff, Lower Part of Santa Fe Group 35 122BLTP Bell Top Formation 35 122BPLG Bishops Lodge Member of Tesuque Formation 35 122CHAM Chama Clays 35 122CMSM Chamisa Mesa Member of Santa Fe Formation 35 122HLSM Hells Mesa Member of Datil Formation 35 122KLGN Kneeling Nun Rhyolite Tuff 35 122LCKB Lucky Bill Formation 35 122LJPK La Jara Peak Member of Datil Formation 35 122PICR Picuris Tuff 35 122PPTS Popotosa Formation 35 122RTTO Ritito Conglomerate 35 122RUBO Rubio Peak Formation 35 122SNTFL Santa Fe Group, Lower Part 35 122SPRS Spears Member of Datil Formation 35 122TRMN Thurman Formation 35 122UVAS Uvas Basalt 35 123BLCB Blanco Basin Formation 35 123GLST Galisteo Formation 35 123PMPK Palm Park Formation 35 123SLDD Soledad Rhyolite 35 124ALMG Almagre Beds 35 124ANMS Animas Formation 35 124BACA Baca Formation 35 124CBMN Cub Mountain Formation 35 124CHCO Chaco Marl 35 124CLRG Canyon Largo Sandstone 35 124CUEV Cueva Rhyolite 35 124HUTN Houten Sandstone 35 124LLVS Llaves Member of San Jose Formation 35 124LRGO Largo Facies 35 124ORJN Orejon Andesite 35 124PNMS Pinyon Mesa Group 35 124PSNC Poison Canyon Formation 35 124RGIN Regina Member of San Jose Formation 35 124SNJS San Jose Formation 35 124TPCS Tapicitos Member of San Jose Formation 35 124TRJN Torrejon Formation 35 124WSTC Wasatch Formation 35 124YGCN Yegua Canyon Facies 35 124ZIA Zia Marl 35 125NCMN Nacimiento Formation 35 125NCMNS Nacimiento Formation, Sandy Shale Facies 35 125PURC Puerco Formation 35 125RTON Raton Formation 35 200RVLT Revuelto Shale 35 210CRCS Cretaceous System 35 210GLNS Gallinas Shale 35 210MCDK Mancos Shale, Lower Part, and Dakota Sandstone, Undivided 35 210MNCS Mancos Shale 35 210MORA Mora Sandstone 35 210PRMD Pyramid Shale 35 210SNST Sanastee Sandstone Member of Mancos Shale 35 210TCTO Tacito Sandstone Lentil of Mancos Shale 35 210TRHM Tres Hermanos Sandstone Member of Mancos Shale 35 211ACUL Archuleta Shale 35 211ALSN Allison Member of Menefee Formation of Mesaverde Group 35 211ATRQ Atarque Member of Mesaverde Formation 35 211BCTD Beechatuda Tongue of Cliff House Sandstone 35 211BLMN Bell Mountain Sandstone Member of Miguel Formation 35 211BRLB Bartlett Barren Member of Crevasse Canyon Formation 35 211CANO Cano Member of Mesaverde Formation 35 211CHCR Chacra Sandstone Member of Mesaverde Formation 35 211CLCN Cholla Canyon Tongue of Cliff House Sandstone 35 211CLFHV Cliff House Sandstone (Includes La Ventana Tongues In Nw Sandoval Co) 35 211CLRDH Colorado Shale 35 211CLRDN Colorado Formation, Shale Member 35 211CLRDS Colorado Formation, Sandstone Member 35 211CLRYC Cleary Coal Member 35 211CRLL Carlile Shale 35 211CRVC Crevasse Canyon Formation of Mesaverde Group 35 211DCRS D-Cross Tongue of Mancos Shale of Mesaverde Group 35 211DKOT Dakota Sandstone or Formation 35 211DLCO Dilco Coal Member of Crevasse Canyon Formation of Mesaverde Group 35 211DLTN Dalton Sandstone Member of Crevasse Canyon Formation of Mesaverde Grp 35 211FRHS Fort Hays Limestone Member of Niobrara Formation 35 211FRLD Fruitland Formation 35 211FRMG Farmington Sandstone Member of Kirtland Shale 35 211FRSN Fort Stanton Shale 35 211GBSNC Gibson Coal Member of Crevasse Canyon Formation of Mesaverde Group 35 211GLLG Gallego Sandstone Member of Gallup Sandstone 35 211GLLP Gallup Sandstone 35 211GRRG Greenhorn and Graneros Formations 35 211GRRS Graneros Shale 35 211HNVR Hanover Granodiorite Porphyry 35 211HOST Hosta Tongue of Point Lookout Sandstone of Mesaverde Group 35 211HRSD Horsehead Tongue of Pike, Mancos Shale 35 211JULP Juana Lopez Sandstone Member of Carlile Shale 35 211KRLD Kirtland Shale 35 211KRLDL Kirtland Shale, Lower Shale Member 35 211KRLDU Kirtland Shale, Upper Shale Member 35 211LAJR La Jara Shale 35 211LCZP La Cruz Peak Formation 35 211LVNN La Ventana Tongue of Cliff House Sandstone 35 211LWIS Lewis Shale 35 211MCDM Mcdermott Member of Animas Formation 35 211MENF Menefee Formation 35 211MGUL Miguel Formation 35 211MORD Madrid Formation 35 211MULT Mulatto Tongue 35 211MVRD Mesaverde Group 35 211NBRR Niobrara Formation 35 211NHBK North Hogback Tongue of Point Lookout Sandstone 35 211OJAM Ojo Alamo Sandstone 35 211PCCF Pictured Cliffs Sandstone 35 211PIRR Pierre Shale 35 211PLCM Placer Mountain Group 35 211PNLK Point Lookout Sandstone 35 211PNMS Punta De La Mesa Sandstone Member of Mesaverde Formation 35 211PNVS Pina Vititos Sandstone 35 211PRIT Prieta Sandstone 35 211PRMD Pyramid Conglomerate 35 211PSCD Pescado Tongue of Mancos Shale 35 211RLCN Rail Canyon Sandstone Member of Vermejo Formation 35 211SATN Satan Tongue of Mancos Shale 35 211SNTR Santa Rita Granodiorite Porphyry 35 211SOKH Smoky Hill Marl Member 35 211SRTN Sarten Sandstone 35 211THTC Tohachi Formation 35 211TLLS Twowells Sandstone Lentil of Pike of Dakota Sandstone 35 211UTCN Ute Canyon Tongue of Cliff House Sandstone 35 211VEJT Vermejo Formation and Trinidad Sandstone, Undivided 35 211VRDN Virden Formation 35 211WMHL Whim Hill Breccia 35 217BKJG Broken Jug Limestone of Bisbee Group 35 217CRBT Corbett Sandstone of Bisbee Group 35 217HDLG Hidalgo Volcanics of Bisbee Group 35 217HDLGS Hidalgo Volcanics, Sedimentary Member, of Bisbee Group 35 217HLFS Hell To Finish Formation 35 217HRDG Howells Ridge Formation of Bisbee Group 35 217HRDGL Howells Ridge Formation, Top Limestone Member 35 217HRDGV Howells Ridge Formation, Volcanic Member 35 217MOJD Mojado Formation of Zeller 35 217PJRT Pajarito Shale Member of Dakota Sandstone 35 217PLPK Playas Peak Formation 35 217PRGR Purgatoire Formation 35 217PRTC Puertocito Formation 35 217RNGB Ringbone Shale of Bisbee Group 35 217RNGBV Ringbone Shale, Volcanic Members, of Bisbee Group 35 217ROCKL Lower Cretaceous Rocks, Undivided 35 217SKKR Skunk Ranch Conglomerate of Bisbee Group 35 217SKKRV Skunk Ranch Conglomerate, Volcanic Member 35 217SPRF Suprareef Limestone Member of U-Bar Formation 35 217UBAR U-Bar Formation 35 218BISB Bisbee Group 35 218BRTT Beartooth Quartzite 35 218DKCK Duck Creek Formation 35 218KIAW Kiawa Mountain Formation 35 218KMCH Kiamichi Formation 35 218MSRC Mesa Rica Sandstone 35 218TCMC Tucumcari Shale 35 219GRRT Garrett Conglomerate 35 220AMRL Amarillo Sandstone 35 220ENRD Entrada Sandstone 35 220GLNC Glen Canyon Group 35 220JURC Jurassic 35 220NAVJ Navajo Sandstone 35 221AGZC Agua Zarca Sandstone Member of Sierra Naciemiento 35 221BLRC Bell Ranch Formation of San Rafael Group 35 221BLUF Bluff Sandstone of Morrison Formation 35 221BRSB Brushy Basin Shale Member of Morrison Formation 35 221CHQQ Chaquaqua Shale 35 221CHVZ Chavez Member of Morrison Formation 35 221COSP Cow Springs Sandstone of Morrison Formation 35 221CRML Carmel Formation of San Rafael Group 35 221ERADU Entrada Sandstone of San Rafael Group, Upper 35 221MRSN Morrison Formation 35 221PRTT Prewitt Sandstone Member of Morrison Formation 35 221RCPR Recapture Shale Member of Morrison Formation 35 221SLWS Salt Wash Sandstone Member of Morrison Formation 35 221SMVL Summerville Formation of San Rafael Group 35 221SRFL San Rafael Group 35 221SRFLL San Rafael Group, Lower Part 35 221TDLT Todilto Limestone of Morrison Formation of San Rafael Group 35 221THRU Thoreau Formation 35 221WHIT White Sandstone Member of Morrison Formation 35 221WNKH Wanakah Formation 35 221WSRC Westwater Canyon Sandstone Member of Morrison Formation 35 221ZUNI Zuni Shale 35 221ZUNIS Zuni Sandstone 35 224OCTE Ocate Sandstone 35 224TDLT Todilto Limestone Member of Wanakah Formation 35 224TRVR Travester Shale 35 230BLDH Baldy Hill Formation 35 230CPSP Camp Springs Conglomerate of Dockum Group 35 230ENDE Endee Shale 35 230HSKN Hoskinnini Member of Moenkopi Formation 35 230MNKP Moenkopi Formation 35 230NRNJ Naranjo Formation 35 231CHNL Chinle Formation 35 231CORR Correo Sandstone Member of Chinle Formation 35 231DCKM Dockum Group 35 231KYNT Kayenta Formation 35 231LKCK Lukachukai Member of Wingate Sandstone 35 231ORCK Owl Rock Member of Chinle Formation 35 231PFDFU Petrified Forest Member, Upper, of Chinle Formation 35 231POLO Poleo Sandstone Lentil of Chinle Formation 35 231RCKP Rock Point Member of Wingate Sandstone 35 231RDND Redonda Formation 35 231SLNC Sloan Canyon Formation of Dockum Group 35 231SLRL Salitral Shale Tongue of Chinle Formation 35 231SNRS Santa Rosa Sandstone 35 231SNRT Senorito Sandstone Lentil of Chinle Formation 35 231SNSL Sonsela Sandstone Bed of Petrified Forest Member of Chinle Formation 35 231SPPN Sheep Pen Sandstone 35 231SRMP Shinarump Member of Chinle Formation 35 231TCVS Tecovas Formation of Dockum Group 35 231WNGT Wingate Sandstone 35 310AQTR Aqua Torres Formation 35 310BLTR Bluewater Formation 35 310BRLL Bernalillo Shale 35 310CDRM Cedar Mesa Sandstone Member of Cutler Formation 35 310CHRC Chiricahua Limestone, Upper Part 35 310CHVS Chaves Shale 35 310CJGL Ceja Glorieta Sandstone 35 310CTLR Cutler Formation 35 310DCLL De Chelly Sandstone Member of Cutler Formation 35 310EARP Earp Formation 35 310EDDY Eddy Sandstone 35 310FRNR Forty-Niner Member of Rustler Formation 35 310FRRO Fierro Limestone 35 310GLOR Glorieta Sandstone Member of San Andres Formation of Manzano Group 35 310GYM Gym Limestone 35 310HALG Halgaito Member of Cutler Formation 35 310HKTL Honaker Trail Formation of Hermosa Group 35 310HOND Hondo Sandstone Member of San Andres Limestone 35 310HRMT Hermit Shale 35 310JCRL Jicarilla Monzonite 35 310KIBB Kaibab Limestone 35 310LSVL Los Vallos Member of Yeso Formation 35 310MBLC Meseta Blanca Sandstone Member of Yeso Formation 35 310MGNT Magenta Member of Rustler Formation 35 310MNZN Manzano Group 35 310NOGL Nogal Formation 35 310OGRK Organ Rock Member of Cutler Formation 35 310PCOS Pecos Formation 35 310PCSC Pecos Canyon Sandstone 35 310RICO Rico Formation 35 310RNVL Rainvalley Formation of Naco Group 35 310SGRC Sangre De Cristo Formation 35 310SUPIE Supai Formation, Evaporite Member 35 310SUPIL Supai Formation, Lower 35 310SYDR San Ysidro Member of Yeso Formation 35 310TRNC Torrance Shale 35 310TRRS Torres Member of Yeso Formation 35 310WTRM White Rim Sandstone Member of Cutler Formation 35 310YESOG Yeso Formation, Manzano Group 35 312CLBR Culebra Dolomite Member of Rustler Formation 35 312CSTL Castile Formation 35 312DYLK Dewey Lake Redbeds 35 312OCHO Ochoan Series 35 312RSLR Rustler Formation 35 312RSLRL Rustler Formation, Unnamed Lower Member 35 312SLDO Salado Formation 35 312TMRK Tamarisk Member of Rustler Formation 35 313ARTS Artesia Group 35 313AZOT Azotea Tongue of Seven Rivers Formation 35 313BLCN Bell Canyon Formation 35 313BRNL Bernal Formation of Artesia Group 35 313BRUC Brushy Canyon Formation of Delaware Mountain Group 35 313BRWN Brown Limestone Member of U-Bar Formation 35 313CABD Carlsbad Group 35 313CKBF Chalk Bluff Formation 35 313CLBD Carlsbad Limestone 35 313CNCH Concha Limestone of Naco Group 35 313CPTN Capitan Limestone 35 313CRCN Cherry Canyon Formation 35 313CTFF Cutoff Shaly Member of Bone Spring Limestone 35 313DGCN Dog Canyon Limestone 35 313DLRM Delaware Mountain Group 35 313GDLP Guadalupian Series 35 313GOSP Goat Seep Dolomite 35 313GRBG Grayburg Formation of Artesia Group 35 313LMSN Limestone Aquifer 35 313LVNG Lovington Sandstone Member of San Andres Formation 35 313OCTL Ocotillo Silt Member 35 313QUEN Queen Formation 35 313SADG San Andres Limestone and Glorieta Sandstone 35 313SADR San Andres Limestone 35 313SADRL San Andres Limestone, Lower Cherty Member 35 313SADRU San Andres Limestone, Upper Clastic Member 35 313SADY San Andres Limestone and Yeso Formation, Undivided 35 313STCK Shattuck Member of Queen Formation 35 313SVRV Seven Rivers Formation 35 313TNSL Tansill Formation 35 313TRTS Three Twins Member of Chalk Bluff Formation 35 313YATS Yates Formation, Guadalupe Group 35 317ABYS Abo and Yeso, Undifferentiated 35 317OTRO Otero Formation 35 318ABO L Abo Sandstone (Lower Tongue) 35 318ABO U Abo Sandstone (Upper Tongue) 35 318BSPG Bone Spring Limestone 35 318CANS Canas Gypsum Member of Yeso Formation 35 318CCNN Cocinino Sandstone 35 318CMRN Cimarron Formation 35 318CPDR Chupadera Formation 35 318EPTP Epitaph Dolomite of Naco Group 35 318JOYT Joyita Sandstone Member of Yeso Formation 35 318KIBB Kaibab Formation 35 318SCRR Scherrer Formation 35 318VCPK Victorio Peak Limestone 35 318YESO Yeso Formation 35 319BRSM Bursum Formation and Equivalent Rocks 35 319COLN Colina Limestone 35 319CTLRL Lower Cutler Group 35 319ELPC Elephant Canyon Formation 35 319HUCO Hueco Limestone 35 319PNDJ Pendejo Tongue of Hueco Formation 35 319PUEB Pueblo Quartzite 35 319SNAN Santa Ana Member of Santa Fe Formation 35 320ALMT Alamito Shale 35 320ANTN Antonito Limestone 35 320ARSD Atrasado Member of Madera Formation 35 320BARB Bar B Formation 35 320BLNG Bullington Member of Magdalena Formation 35 320CRTD Cortado Formation 35 320DON Don Limestone 35 320GRMS Gray Mesa Member of Madera Formation 35 320HMBD Humboldt Formation 35 320HRQLL Horquilla Limestone, Lower Part 35 320HRQLU Horquilla Limestone, Upper Part 35 320HSPG Hot Springs Formation 35 320ICRC Incarnacion Fire Clay 35 320MNHM Mountain Home Shale 35 320MNTS Montosa Limestone 35 320MOLS Molas Formation 35 320MOSC Mosca Limestone 35 320NACO Naco Group 35 320NAKY Nakaye Formation 35 320OSCR Oscuro Limestone 35 320OSLD Oswaldo Formation 35 320RDHS Red House Formation 35 320RDTK Red Tanks Member of Madera Formation 35 320SNDI Sandia Formation 35 320SYRN Syrena Formation 35 320TLLR Tellera Limestone 35 320WRMG Warmington Limestone Member of Elephant Butte Formation 35 321SGDC Sangre De Cristo Formation 35 322BRTN Bruton Formation 35 322DLCR Del Cuerto Formation 35 322FRSL Fresnal Group 35 322HLDR Holder Formation of Magdalena Group 35 322MOYA Moya Formation 35 322PRSP Panther Seep Formation 35 323ADOB Adobe Formation 35 323BEMN Beeman Formation of Magdalena Group 35 323BRRG Burrego Formation 35 323CONE Coane Formation 35 323CSPG Council Spring Limestone 35 323HBRG Hansonburg Group 35 323STRY Story Formation 35 323VRDS Veredas Group 35 324HRMS Hermosa Formation 35 325ARMD Armendaris Group 35 325BGSF Bug Scuffle Limestone Member of Gobbler Formation 35 325BLDR Bolander Group 35 325CNGL Cieneguilla Formation 35 325COYT Coyote Sandstone Member of Madera Limestone 35 325GBLR Gobbler Formation of Magdalena Group 35 325GRCI Garcia Formation 35 325MDER Madera Limestone 35 325MDERL Madera Limestone, Lower Gray Limestone Member 35 325MDERU Madera Limestone, Upper Arkosic Limestone Member 35 325WSKC Whiskey Canyon Limestone 35 326APDC Apodaca Formation 35 326ARRY Arrey Formation 35 326CCNG Cuchillo Negro Formation 35 326FCBL Fra Cristobal Formation 35 326GRNC Green Canyon Group 35 326MGDL Magdalena Group 35 326MSPG Mud Springs Group 35 327LGSP Log Springs Formation 35 330CLOS Caloso Formation 35 330CLRD Chloride Formation 35 330HLMS Helms Formation 35 330PRCH Percha Shale 35 330SIRR Sierra Limestone 35 330TRRR Tererro Formation 35 331LDVL Leadville Limestone 35 332PRDS Paradise Formation 35 333ARPC Arroyo Penasco Formation 35 333LCRC Las Cruces Formation 35 333RNCR Rancheria Formation 35 337BELL Bella Shale 35 337CWLS Cowles Member of Terrero Formation 35 337HNVR Hanover Limestone 35 337MCHO Macho Member of Terroro Formation 35 337MNLS Manuelitas Member of Terroro Formation 35 337RDYP Ready Pay Member of Percha Shale 35 337SLVR Silver Shale 35 338ADRC Andrecito Member of Lake Valley Limestone 35 338AMGD Alamgordo Member of Lake Valley Limestone 35 338ARCN Arcente Member of Lake Valley Limestone 35 338DNAN Dona Ana Member of Lake Valley Limestone 35 338GRND Grande Limestone 35 338KLLY Kelley Limestone 35 338LKVL Lake Valley Limestone 35 338NUNN Nunn Member of Lake Valley Limestone 35 338TBLC Tierra Blanca Member of Lake Valley Formation 35 339CBLR Caballero Formation 35 339ECBR Escabraso Limestone 35 340EPRS Espiritu Santo Formation 35 341BOX Box Member of Percha Shale Formation 35 341BRND Berenda Limestone 35 341CNDR Contadero Formation 35 341ELBR Elbert Formation 35 341SLGP Sly Gap Formation 35 344BSPG Bear Springs Basalt 35 344ONTE Onate Formation 35 344SNTR Santa Rita Limestone 35 350CBOL Cibola Limestone 35 350NAID Naiad Limestone 35 354FSLM Fusselman Dolomite 35 360ARMD Armendaris Limestone 35 360CRBL Cristobal Limestone 35 360FRDS Frondosa Limestone 35 361ALMN Aleman Formation 35 361CBLC Cable Canyon Sandstone 35 361CTTR Cutter Formation of Montoya Dolomite 35 361JRND Jornada Limestone 35 361MNTY Montoya Dolomite Group 35 361PRVL Par Value Member of Montoya Dolomite 35 361RVEN Raven Member of Montoya Dolomite 35 361SCDV Second Value Member of Montoya Dolomite 35 361UPHM Upham Dolomite 35 361VLMN Valmont Dolomite 35 367BTCV Bat Cave Limestone 35 367ELPA El Paso Limestone or Group 35 367SRRT Sierrite Limestone 35 370BURR Burro Quartzite 35 370DRGN Dragoonan Series 35 370HKNS Hawkins Limestone 35 371BLSS Bliss Sandstone 35 371CRSC Carrasco Limestone 35 371SNDN Shandon Quartzite 35 372IGNC Ignacio Quartzite 35 400AGCL Agua Caliente Gabbro 35 400ANTN Antonio Slate 35 400BDTO Badito Quartzite Member of Hopewell Series 35 400BGRK Big Rock Conglomerate of Kiawa Mountain Formation 35 400BRDM Burned Mountain Metarhyolite 35 400BSPG Blue Springs Muscovite Schist 35 400CBRS Cabresto Metaquartzite 35 400CBRSQ Cabresto Quartzite 35 400CSTL Costilla Granite 35 400CVGC Cleveland Gulch Quartzite Member of Hopewell Series 35 400DXON Dixon Granite 35 400EMBD Embudo Granite 35 400GRNN Garnuan Series 35 400GRPC Graphic Lavas 35 400HOND Hondo Slate 35 400HPLL Hopewell Series 35 400ICRC Incarnacion Granite 35 400JWBN Jawbone Conglomerate of Kiawa Mountain Formation 35 400LCRC Lacorocah Meta-Andesite Tuff Member of Greenstone Complex 35 400MPPN Moppin Metavolcanic Series 35 400MQNT Maquinita Granodiorite 35 400NNOS Ninos Schist 35 400ORTG Ortega Quartzite 35 400PCMB Precambrian Erathem 35 400PCRS Picuris Basalt 35 400PETC Petaca Schist 35 400PILR Pilar Phyllite Member of Ortega Formation 35 400PNSC Penasco Quartzite 35 400PRST Priest Granite 35 400ROCD Rociada Limestone 35 400SAIS Sais Quartzite 35 400SDVL Sandoval Granite 35 400SERN Serna Schist 35 400SLTR Solitario Slate 35 400SPLL Sapello Quartzite 35 400SVLT Sevilleta Rhyolite 35 400TJRS Tijeras Quartzite 35 400TRCS Truchas Slate 35 400TUSS Tusas Granite 35 400VDTO Vadito Formation 35 400VLCS Vallecitos Rhyolite 35 400WRDG White Ridge Quartzite 35 400YSDR Ysidro Shale 35 BASEMENT Basement 35 BEDROCK Bedrock 36 100CNZC Cenozoic Erathem 36 110QRNR Quaternary System 36 111AFCF Artificial Fill 36 111ALVM Holocene Alluvium 36 111BBTM Bay-Bottom Deposits 36 111BECH Beach Deposits 36 111DUNED Dune Deposits 36 111FILL Fill 36 111HLCN Holocene Series 36 111LAKE Lake Deposits 36 111SLMR Salt-Marsh Deposits 36 111TRRC Terrace Deposits 36 11220CL 20-foot Clay 36 112GLCD Glacial Delta Deposits 36 112GLCLU Glacial Aquifer, Upper 36 112GRDR Gardiners Clay 36 112HBHD Harbor Hill Drift 36 112HBHO Harbor Hill Outwash 36 112HBHT Harbor Hill Till 36 112HHGM Harbor Hill Ground Moraine 36 112HHTM Harbor Hill Terminal Moraine 36 112ICCC Ice-Contact Deposits, Pleistocene 36 112JMCO Jameco Aquifer 36 112KMTC Kame Terrace Deposits 36 112LAKE Lake Deposits 36 112NTSR North Shore Aquifer 36 112NTSRC North Confining Unit 36 112OTSH Outwash 36 112PGFG Port Washington Confining Unit 36 112PGQF Port Washington Aquifer 36 112PLSC Pleistocene Series 36 112RKGM Ronkonkoma Ground Moraine 36 112RKKD Ronkonkoma Drift 36 112RKKO Ronkonkoma Outwash 36 112RKKT Ronkonkoma Till 36 112RKTM Ronkonkoma Terminal Moraine 36 112SAND Sand 36 112SDGV Sand and Gravel 36 112SMTN Smithtown Clay 36 112TILL Till 36 121MNNT Mannetto Gravel 36 200MSZC Mesozoic Erathem 36 210CRCS Cretaceous System 36 211CRCSU Upper Cretaceous Series 36 211LLYD Lloyd Aquifer 36 211MAGT Magothy Aquifer 36 211MMGD Monmouth Greensand 36 211MNMG Matawan Group-Magothy Formation 36 211MONM Monmouth Group 36 211MTWN Matawan Formation 36 211RCNF Raritan Confining Unit 36 211RRTN Raritan Formation 36 230TRSC Triassic System 36 231BRCK Brunswick Formation 36 231NWRK Newark Group 36 231PLSD Palisade Diabase 36 231STCN Stockton Formation 36 231TRSCU Upper Triassic Series 36 300CLSC Clastic Rocks 36 300PLZC Paleozoic Erathem 36 320PSLV Pennsylvanian System 36 324PSVL Pottsville Formation 36 330MSSP Mississippian System 36 337POCO Pocono Group 36 340DVNN Devonian System 36 341CAND Canadaway Group 36 341CNNG Conewango Group 36 341CONT Conneaut Group 36 341DVNNU Devonian, Upper 36 341GENS Genesee Formation 36 341JVWF Java-West Falls Formation 36 341SONY Sonyea Formation 36 344DVNNM Devonian, Middle 36 344ESPS Esopus Formation 36 344HMLN Hamilton Group 36 344ONDG Onondaga Limestone 36 344TLLY Tully Limestone 36 347DVNNL Devonian, Lower 36 347HDBG Helderberg Group 36 347ORSK Oriskany Formation 36 350GRPD Green Pond Conglomerate 36 350SLRN Silurian System 36 351ACBB Akron-Coblesville-Bertie Formations, Undifferentiated 36 351AKRN Akron Dolomite 36 351BNTR Binnewater Sandstone 36 351BRTI Bertie Limestone 36 351CBLK Cobleskill Limestone 36 351CMLS Camillus Shale 36 351ERMS Eromosa Dolomite of Lockport Group 36 351GILD Goat Island Dolomite of Lockport Group 36 351GLPH Guelph Dolomite of Lockport Group 36 351LCKP Lockport Dolomite 36 351LNGD Longwood Shale 36 351SALN Salina Group 36 351SLRNU Silurian, Upper 36 351SRCS Syracuse Salt 36 351VRNN Vernon Shale 36 354SLRNM Silurian, Middle 36 354SNGK Shawangunk Formation 36 357CLIN Clinton Group 36 357DECW Decew Dolomite of Clinton Group 36 357GAPR Gasport Dolomite of Lockport Group 36 357GRMB Grimsby Formation of Medina Group 36 357IRDQ Irondequoit Limestone of Clinton Group 36 357MDIN Medina Group 36 357NEHG Neahga Shale of Clinton Group 36 357RNLS Reynales Limestone of Clinton Group 36 357ROCR Rochester Shale of Clinton Group 36 357SLRNL Silurian, Lower 36 357TRLD Thorold Sandstone of Medina Group 36 357WRLP Whirlpool Sandstone of Medina Group 36 360ODVC Ordovician System 36 361LRRN Lorraine Shale 36 361ODVCU Ordovician, Upper 36 361OSWG Oswego Sandstone 36 361QNSN Queenston Shale 36 361UTIC Utica Shale 36 364BRKR Berkshire Schist 36 364CHZY Chazy Group 36 364CNJR Canajoharie Shale 36 364NMKL Normanskill Formation 36 364ODVCM Ordovician, Middle 36 364SKHL Snake Hill Formation 36 364TBRV Trenton-Black River Group 36 364TREN Trenton Group 36 364WLMC Walloomsac Slate 36 367BKMN Beekmantown Group 36 367ODVCL Ordovician, Lower 36 367PLTN Poultney Slate 36 367TBHL Tribes Hill Limestone 36 370CMBR Cambrian System 36 371CMBRM Middle Cambrian Series 36 371CMBRU Cambrian, Upper 36 371LLFL Little Falls Dolomite 36 371PSDM Potsdam Sandstone 36 371TCSQ Taconic Sequence 36 371THRS Theresa Dolomite 36 374CMBRM Cambrian, Middle 36 374SKBG Stockbridge Group 36 377BULL Bull Slate 36 377CMBRL Lower Cambrian Series 36 377DLTN Dalton Formation 36 377EZVB Elizaville and Berkshire Formations 36 377NSSU Nassau Formation 36 377PGQY Poughquay Quartzite 36 377SCCK Schodack Formation 36 377SSNG Stissing Dolomite 36 400BCPX Basement Complex 36 400PCMB Precambrian Erathem 36 BASEMENT Basement 36 BEDROCK Bedrock 37 000SPRL Saprolite 37 100BDRK Bedrock Undifferentiated 37 100CZMZ Cenozoic-Mesozoic Erathems 37 100RGLT Regolith 37 100TRNS Transition Zone 37 110ALVM Quaternary Alluvium 37 110QPLC Post Miocene (Quaternary + Pliocene) Rocks 37 110QRNR Quaternary System 37 110SPRL Saprolite 37 111FVDP Fluvial Deposits 37 111MRIN Marine Deposits 37 111SRFD Stratified Deposits, Undifferentiated 37 112FVDP Fluvial Deposits 37 112MRIN Marine Deposits 37 112SRFD Stratified Deposits, Undifferentiated 37 120TRTRL Tertiary Lower Aq Unit (Castle Hayne Limestone &beaufort Fms) 37 120TRTRU Tertiary Upper Aq Unit (Yorktown & Pungo River Fms) 37 122MCEC Miocene-Eocene Series 37 122MCEP Miocene-Eocene-Paleocene Series 37 122MOCN Miocene Series 37 122PGRV Pungo River Formation 37 122YRKN Yorktown Formation 37 122YRKNQ Yorktown Aquifer 37 122YRKNT Yorktown Aquitard 37 123OLGC Oligocene Series 37 124CSLH Castle Hayne Limestone 37 124CSLHL Lower Castle Hayne Aquifer 37 124CSLHU Upper Castle Hayne Aquifer 37 124ECPC Eocene-Paleocene Series 37 124EOCN Eocene Series 37 125BFRT Beaufort Formation 37 125BFRTQ Beaufort Aquifer 37 125BFRTT Beaufort Aquitard 37 125PLCN Paleocene Series 37 200MSZC Mesozoic Erathem 37 210CRTSL Cretaceous Lower Aq Unit (Lower Part Cape Fear Fm Sediments) 37 210CRTSM Cretaceous Middle Aq Unit (Black Creek &cape Fear Fms) 37 210CRTSU Cretaceous Upper Aq Unit (Mostly Peedee Formation) 37 211BAKC Black Creek Aquifer 37 211BAKCL Black Creek Aquifer, Lower 37 211BAKCM Black Creek Aquifer, Middle 37 211BAKCU Black Creek Aquifer, Upper 37 211CPFRL Lower Cape Fear Aquifer 37 211CPFRU Upper Cape Fear Aquifer 37 211CRAQU Upper Cretaceous Aquifer System 37 211CRCSU Upper Cretaceous Series 37 211PEED Peedee Formation 37 211TSCL Tuscaloosa Formation 37 217SDMS Lower Cretaceous Sediments Undifferentiated 37 220MIVI Mafic Intrusive Igneous Rock 37 230SDMR Triassic Sedimentary Rocks 37 300GRNT Granite 37 300IMMG Intermediate Metaigneous Rock 37 300MCGS Mica Gneiss 37 300MFMG Mafic Metaigneous Rock 37 300MGNS Metaigneous Rocks 37 300MMPC Metamorphic Rocks 37 300PZPB Paleozoic-Precambrian Erathems 37 300SCST Schist 37 300SLTE Slate 37 310CPBM Coastal Plain Basement 37 310FCMG Felsic Metaigneous Rock 37 310FIVI Felsic Intrusive Igneous Rock 37 330MFCG Mafic Gneiss 37 360IIVI Intermediate Intrusive Igneous Rock 37 370ARGL Argillite 37 370EPMV Epiclastic Metavolcanic Rock 37 370FCMV Felsic Metavolcanic Rock 37 370FLCG Felsic Gneiss 37 370IMMV Intermediate Metavolcanic Rock 37 370MFMV Mafic Metavolcanic Rock 37 370MVCC Metavolcanic Rock Undifferentiated 37 370PLLT Phyllite 37 370QRTZ Quartzite 37 370SCST Schist 37 400SCST Schist 37 410MRBL Marble 37 410SLTE Slate 37 BASEMENT Basement 37 BEDROCK Bedrock 38 000UMTL unknown material 38 100CNZC Cenozoic Erathem 38 110BNPR Bennie Peer Aquifer 38 110LLMR Little Missouri Aquifer 38 110QRNR Quaternary System 38 110YLMR Yellowstone-Missouri Aquifer 38 111ALVM Holocene Alluvium 38 111HLCN Holocene Series 38 112ADRN Adrian Aquifer 38 112ALCK Antler Creek Aquifer 38 112APCK Antelope Creek Aquifer 38 112APCKL Apple Creek Aquifer, Lower 38 112APCKU Apple Creek Aquifer, Upper 38 112BANL Bantel Aquifer 38 112BCK Bald Hill Creek Aquifer 38 112BDCK Braddock Aquifer 38 112BDVL Buried Valley Deposits 38 112BECH Beach Deposits 38 112BFCK Buffalo Creek Aquifer 38 112BGCL Big Coulee Aquifer 38 112BGFV Buried Glaciofluvial Deposits 38 112BLCK Brule Creek 38 112BLMN Belmont Aquifer 38 112BMCK Bismarck Aquifer 38 112BRCK Burnt Creek Aquifer 38 112BRDO Buried Outwash Deposits 38 112BRGD Brightwood Aquifer 38 112BRLG Burlington Aquifer 38 112BRMP Brampton Aquifer, Pleistocene 38 112BUTT Butte Aquifer 38 112BVCK Beaver Creek Aquifer 38 112BVLK Beaver Lake Aquifer, Pleistocene 38 112CBKC Cutbank Creek Aquifer 38 112CECK Cherry Creek Aquifer 38 112CLED Central Eddy Aquifer 38 112CLFX Colfax Aquifer 38 112COMB Columbus Aquifer 38 112CRLK Cherry Lake Aquifer 38 112CRNB Charbonneau Aquifer 38 112CRNG Carrington Aquifer 38 112CRSB Crosby Aquifer 38 112CRTN Courtnay Aquifer 38 112CRUS Crevasse Deposits 38 112CTHY Cathay Aquifer 38 112CTTL Cat Tail Aquifer 38 112DCKY Dickey Aquifer 38 112DELT Delta Deposits 38 112DGLS Douglas Aquifer 38 112DNBH Denbigh Aquifer 38 112DRLK Deer Lake Aquifer 38 112DUNED Dune Deposits 38 112DYLK Dry Lake Aquifer - Pleistocene 38 112ECLK Eric Lake Aquifer 38 112EDBG Edinburg Aquifer 38 112EDGL Edgeley Aquifer 38 112EDRL Enderlin Aquifer 38 112EGLV Englevale Aquifer 38 112ELDL Ellendale Aquifer 38 112ELKV Elk Valley Aquifer 38 112ELLT Elliot Aquifer, Pleistoecene 38 112EMCK Elm Creek Aquifer 38 112EMRD Emerado Aquifer 38 112ESKRD Esker Deposits 38 112ESMD Esmond Aquifer 38 112ESMN Eastman Aquifer 38 112FDVL Fordville Aquifer 38 112FRGO Fargo Aquifer 38 112FRMD Fort Mandan Aquifer 38 112FRMN Fairmount Aquifer 38 112FRRV Forest River Aquifer 38 112GBSG Glacial Buried Sand and/or Gravel 38 112GCDF Glacial Drift, Undifferentiated - Pleistocene 38 112GDFK Grand Forks Aquifer 38 112GECC Glenco Channel Aquifer 38 112GLBG Galesburg Aquifer 38 112GLCU Glacial Deposits, Undifferentiated 38 112GLNB Glenburn Aquifer, Pleistocene 38 112GLNV Glenview Aquifer 38 112GLON Goldwin Aquifer 38 112GLPH Guelph Aquifer 38 112GMCK Goodman Creek Aquifer 38 112GRNR Grenora Aquifer 38 112GRSN Garrison Aquifer 38 112GSSG Glacial Surficial Sand and/or Gravel 38 112GWNR Gwinner Aquifer, Pleistocene 38 112HAMR Hamar Aquifer 38 112HBRG Hillsburg Aquifer System, Pleistocene 38 112HDLK Hiddenwood Lake Aquifer 38 112HFLD Hofflund Aquifer 38 112HLBR Hillsboro Aquifer 38 112HMLN Hamilton Aquifer 38 112HNKS Hankinson Aquifer 38 112HOMR Homer Aquifer 38 112HRVL Horseshoe Valley Aquifer 38 112HSNB Horse Nose Butte Aquifer 38 112HTRV Heart River Aquifer 38 112ICCC Ice-Contact Deposits, Pleistocene 38 112ICDC Icelandic Aquifer 38 112IKSR Inkster Aquifer 38 112JMRV James River Aquifer 38 112JMSN Jamestown Aquifer 38 112JNLK Juanita Lake Aquifer 38 112JSLK Johnson Lake Aquifer 38 112KAMED Kame Deposits 38 112KDRC Kidder County Aquifer 38 112KFRV Knife River Aquifer 38 112KLDR Killdeer Aquifer 38 112KLGR Kilgore Aquifer 38 112KLRH Karlsruhe Aquifer 38 112KMTC Kame Terrace Deposits 38 112KNMR Kenmare Aquifer 38 112LCSR Lacustrine Deposits 38 112LEDS Leeds Aquifer 38 112LGLK Long Lake Aquifer 38 112LGNC Lignite City Aquifer 38 112LKFV Little Knife River Valley Aquifer 38 112LKNT Lake Nettie Aquifer System 38 112LKNTL Lake Nettie Aquifer System, Lower 38 112LKNTU Lake Nettie Aquifer System, Upper 38 112LKSO Lake Souris Aquifer 38 112LLMD Little Muddy Aquifer 38 112LMUR Lamoure Aquifer 38 112LRSR Lower Souris Aquifer 38 112LSLK Lost Lake Aquifer 38 112LTHR Little Heart Aquifer 38 112MCKZ Mc Kenzie Aquifer 38 112MCNS Mcintosh Aquifer - Pleistocene 38 112MCVL Mc Ville Aquifer 38 112MDCK Maddock Aquifer 38 112MDFD Medford Aquifer 38 112MDIN Medina Aquifer 38 112MDWY Midway Aquifer 38 112MFRD Manfred Aquifer 38 112MIRV Missouri River 38 112MLCL Milnor Channel Aquifer 38 112MMPL Marstonmoor Plain Aquifer 38 112MNCH Munich Aquifer 38 112MNKN Minnewaukan Aquifer 38 112MNMR Mount Moriah Aquifer 38 112MNOT Minot Aquifer 38 112MPLR Montpelier Aquifer 38 112MRCR Mercer Aquifer 38 112MRTN Martin Aquifer System 38 112NBDC Northwest Buried Channel Aquifer 38 112NBLG North Burleigh Aquifer 38 112NPLN Napoleon Aquifer 38 112NRED Northwest Eddy Aquifer 38 112NRHL North Hill Aquifer 38 112NRKF New Rockford Aquifer 38 112NRVL Nortonville Aquifer 38 112NWTN New Town Aquifer 38 112OBRN Oberon Aquifer 38 112OKES Oakes Aquifer 38 112OTRL Ottertail Aquifer 38 112OTSH Outwash 38 112PAGE Page Aquifer 38 112PLLK Pleasant Lake Aquifer 38 112PLSC Pleistocene Series 38 112PMBD Pembina Delta Aquifer 38 112PMBR Pembina River Aquifer 38 112PPCK Pipestem Creek Aquifer 38 112PPLR Poplar Aquifer 38 112PWCK Painted Woods Creek Aquifer, Pleistocene 38 112PWLK Painted Woods Lake Aquifer, Plesitocene 38 112RAY Ray Aquifer 38 112RCKR Rocky Run Aquifer 38 112RFLD Rosefield Aquifer 38 112RGBY Rugby Aquifer 38 112RLLK Russel Lake Aquifer 38 112RMCK Random Creek Aquifer 38 112ROLL Rolla Aquifer, Pleistocene 38 112RSLD Rusland Aquifer 38 112RVDL Riverdale Aquifer 38 112RYDR Ryder Aquifer 38 112SBLC Sibley Channel Aquifer 38 112SBLK Strawberry Lake Aquifer 38 112SBRG Strasburg Aquifer 38 112SCNL Soo Channel Aquifer 38 112SDBC Sundre Buried Channel Aquifer 38 112SDPR Sand Prairie Aquifer 38 112SFSD South Fessenden Aquifer 38 112SIMS Sims Aquifer 38 112SJMS St. James Aquifer 38 112SKCK Snake Creek Aquifer 38 112SKJL Skjermo Lake Aquifer 38 112SLCK Shell Creek Aquifer System 38 112SLDS Shields Aquifer 38 112SLVL Shell Valley Aquifer, Pleistocene 38 112SNCL Sheyenne Channel Aquifer 38 112SNDL Sheyenne Delta Aquifer 38 112SONA Sonora Aquifer 38 112SORV Souris Valley Aquifer 38 112SPCK Spring Creek Aquifer 38 112SPRD Spiritwood Aquifer 38 112SQBC Square Butte Creek Aquifer 38 112SRKH Starkweather Aquifer 38 112SSLG Stoney Slough Aquifer 38 112STHL South Hill Aquifer 38 112STRR Streeter Aquifer 38 112SVLG Sheyenne Village Aquifer 38 112SVMC Seven Mile Coulee Aquifer 38 112SYDN Sydney Aquifer 38 112TAPN Tappen Aquifer 38 112TBCG Tobacco Garden Aquifer 38 112TILLD Till Deposits 38 112TLGN Tolgen Aquifer 38 112TLLK Turtle Lake Aquifer System 38 112TMPS Thompson Aquifer 38 112TOKO Tokio Aquifer 38 112TRCT Tower City Aquifer 38 112TRNN Trenton Aquifer 38 112TRRC Terrace Deposits 38 112UBCK Upper Buffalo Creek Aquifer 38 112VANG Vang Aquifer 38 112VLCT Valley City Aquifer 38 112VLTRA Voltaire Aquifer 38 112WFCK Wolf Creek Aquifer 38 112WFRG West Fargo Aquifer 38 112WGCL Wing Channel Aquifer 38 112WGPR Wagonsport Aquifer 38 112WIDR Windsor Aquifer 38 112WLDR Wildrose Aquifer 38 112WLSG Weller Slough Aquifer 38 112WMBD Wimbledon Aquifer 38 112WNOA Winona Aquifer 38 112WPTN Wahpeton Aquifer 38 112WRCK Warwick Aquifer 38 112WSHK Wishek Aquifer System - Pleistocene 38 112WSLD White Shield Aquifer 38 112WWLD West Wildrose Aquifer 38 112YKCK Yanktonai Creek Aquifer 38 112YPSL Ypsilanti Aquifer, Pleistocene 38 112ZLND Zeeland Aquifer - Pleistocene 38 120TRTR Tertiary System 38 122MOCN Miocene Series 38 123WRVR White River Formation 38 124GLDV Golden Valley Formation 38 124GVSB Golden Vally Formation (Eocne-Paleocene) Butte Mem of Fort Union Form 38 125CBLD Cannonball-Ludlow Members of Fort Union Formation 38 125CLCI Coal Lake Coulee Interval 38 125CLKC Coal Lake Coulee Bed 38 125CNBL Cannonball Member of Fort Union Formation 38 125FRUN Fort Union Formation 38 125HGEL Hagel Bed 38 125HGIV Hagel Interval 38 125HRMN Harmon Lignite Aquifer, Paleocene 38 125HSLR Hensler Bed 38 125KCIV Kinneman Creek Interval 38 125LDLW Ludlow Member of Fort Union Formation 38 125LHCK Ludlow Member of Fort Union Formation-Hell Creek Formation 38 125SBLG Sentinel Butte Lignite Aquifer, Paleocene 38 125SBTR Sentinel Butte-Tongue River Members of Fort Union Formation 38 125SNLB Sentinel Butte Member of Fort Union Formation 38 125TGRV Tongue River Member of Fort Union Formation 38 125TGRVL Tongue River Member of Fort Union Formation, Lower 38 125TGRVS Tongue River Spoils Piles 38 125TRVC Tongue River-Cannonball Members of Fort Union Formation Paleocene 38 125TRVL Tongue River-Ludlow Members of Fort Union Formation 38 125TVCI Travis Creek Interval 38 125TVCK Travis Creek Bed 38 125UDDB Underwood B Bed 38 125UDDC Underwood C Bed 38 125UDDS Underwood Sheet Sand 38 125UDRD Underwood Sand 38 125WLSG Weller Slough Bed 38 125WSIV Weller Slough Interval 38 200MSZC Mesozoic Erathem 38 210CRCS Cretaceous System 38 211BLFC Belle Fourche Formation 38 211CLRD Colorado Group 38 211CRCSU Upper Cretaceous Series 38 211CRLL Carlile Shale 38 211EAGL Eagle Formation 38 211FXHL Fox Hills Formation 38 211GRNR Greenhorn Formation 38 211GRRS Graneros Shale 38 211HCFH Hell Creek Formation-Fox Hills Sandstone 38 211HLCK Hell Creek Formation 38 211JURV Judith River Formation 38 211MNTN Montana Group 38 211NBRR Niobrara Formation 38 211PIRR Pierre Shale 38 217CRCSL Lower Cretaceous Series 38 217DKOT Dakota Group or Formation or Aquifer 38 217FLRV Fall River Formation 38 217LKOT Lakota Formation 38 217MWRY Mowry Shale 38 217NCSL Newcastle Sandstone 38 217SKCK Skull Creek Shale 38 220JRSC Jurassic System 38 220RDBD Jurassic Red Beds 38 221JRSCU Upper Jurassic Series 38 221MRSN Morrison Formation 38 221RRDN Rierdon Formation 38 221SNDC Sundance Formation 38 221SWFT Swift Formation 38 224JRSCM Middle Jurassic Series 38 224PIPR Piper Formation 38 230SPRF Spearfish Formation (Triassic-Permian) 38 230TRSC Triassic System 38 300PLZC Paleozoic Erathem 38 310MNKT Minnekahta Limestone 38 310MNLS Minnelusa Formation (Permian andPennsylvanian) 38 310PRMN Permian System 38 317OPCH Opeche Shale 38 320AMSD Amsden Formation 38 320PSLV Pennsylvanian System 38 320TYLR Tyler Formation 38 330BKKN Bakken Formation (Mississippian and Devonian) 38 330MSSP Mississippian System 38 331BGSN Big Snowy Group 38 331CRLS Charles Formation 38 331HETH Heath Formation or Shale of Big Snowy Group 38 331KBBY Kibbey Sandstone 38 331MDSN Madison Group (Upper and Lower Mississippian) 38 331MSNC Mission Canyon Limestone 38 331MSSPU Mississippian, Upper 38 331OTTR Otter Formation of Big Snowy Group 38 337LDGP Lodgepole Limestone of Madison Group 38 337MSSPL Mississippian, Lower 38 340DVNN Devonian System 38 341BRDB Birdbear Formation 38 341DUPR Duperow Formation 38 341DVNNU Devonian, Upper 38 341JFRS Jefferson Group 38 341SRRV Souris River Formation 38 341TRFK Three Forks Shale 38 344DDNB Dawson Bay Formation 38 344DVNNM Devonian, Middle 38 344ELKP Elk Point Group 38 344PRIR Prairie Formation 38 344WPGS Winnipegosis Formation 38 347BRTB Beartooth Butte Formation 38 347DVNNL Devonian, Lower 38 350IRLK Interlake Formation 38 354SLRNM Silurian, Middle 38 357SLRNL Silurian, Lower 38 360DDWD Deadwood Formation 38 360ODUC Ordovician System 38 361ODVCU Ordovician, Upper 38 361RDRV Red River Formation 38 361SNMN Stony Mountain Formation 38 361STNL Stonewall Formation 38 364ODVCM Ordovician, Middle 38 364WNPG Winnipeg Formation 38 370CMBR Cambrian System 38 371CMBRU Cambrian, Upper 38 400PCMB Precambrian Erathem 38 400PCMBG Precambrian Granite 38 BASEMENT Basement 38 BEDROCK Bedrock 39 100CNZC Cenozoic Erathem 39 110QRNR Quaternary System 39 111ALVM Holocene Alluvium 39 111CLVM Colluvium 39 111TRRC Terrace Deposits 39 112LAKE Lake Deposits 39 112OTSH Outwash 39 112TILL Till 39 300PLZC Paleozoic Erathem 39 310PRMN Permian System 39 317GREN Greene Formation 39 317WSNG Washington Formation 39 320PSLV Pennsylvanian System 39 321CNMG Conemaugh Formation 39 321MNGL Monongahela Formation 39 324ALGN Allegheny Formation 39 324PSVL Pottsville Formation 39 327SHRN Sharon Formation 39 327SHRNC Sharon Conglomerate 39 330BDFD Bedford Shale 39 330BERE Berea Sandstone 39 330CYHG Cuyahoga Formation 39 330MSSP Mississippian System 39 330MSSPD Mississippian-Devonian Systems 39 330SNBR Sunbury Shale 39 331LOGN Logan Formation 39 331MXVL Maxville Limestone 39 337CUSG Cussewago Sandstone 39 340DVNN Devonian System 39 341BDFD Bedford Shale 39 341DVNNU Devonian, Upper 39 341OHIO Ohio Shale 39 341OLNG Olentangy Shale 39 344AMBG Amherstburg Formation 39 344CLMB Columbus Limestone 39 344DLWR Delaware Limestone 39 344DRVR Detroit River Group 39 344DVNNM Devonian, Middle 39 344LUCA Lucas Limestone 39 344MRCL Marcellus Shale 39 344NIAG Niagara Dolomite 39 347HLBR Hillsboro Sandstone 39 347ORIS Oriskany Sandstone 39 350SLRN Silurian System 39 351BILD Bass Islands Dolomite 39 351BILDG Bass Islands Group 39 351GFLD Greenfield Dolomite 39 351PINB Put-In-Bay Dolomite 39 351RRVR Raisin River Dolomite 39 351SLIN Salina Formation 39 351SLRNU Silurian, Upper 39 351TMCT Tymochtee Formation 39 354CDVL Cedarville Dolomite 39 354DYTN Dayton Limestone 39 354EPHM Euphemia Dolomite 39 354OSGD Osgood Formation 39 354SLRNM Silurian, Middle 39 354SPGF Springfield Limestone 39 355LCKP Lockport Dolomite 39 357BFLD Brassfield Limestone 39 357SLRNL Silurian, Lower 39 360ODVC Ordovician System 39 361ARNM Arnheim Shale 39 361EDEN Eden Group 39 361ELKR Elkhorn Formation 39 361FLTN Fulton Shale 39 361FRVW Fairview Formation 39 361KOPE Kope Formation 39 361LBRT Liberty Formation 39 361LTON Latonia Shale 39 361MCML Mc Millan Formation 39 361MSVL Maysville Group 39 361ODVCU Ordovician, Upper 39 361RCMD Richmond Group 39 361UTIC Utica Shale 39 361WSVL Waynesville Shale 39 361WTTR Whitewater Formation 39 364PPLS Point Pleasant Formation 39 364SNPR Saint Peter Sandstone 39 364TRNN Trenton Limestone 39 365BKRV Black River Formation 39 370CMBR Cambrian System 39 400PCMB Precambrian Erathem 39 BASEMENT Basement 39 BEDROCK Bedrock 40 100CNZC Cenozoic Erathem 40 110ALVM Quaternary Alluvium 40 110CMTA Cimarron Terrace and Alluvial Aquifer 40 110EFRT Elm Fork Red River Terrace Aquifer 40 110EFTA Elm Fork Red River Terrace & Alluvial Aquifer 40 110LCSR Lacustrine Deposits 40 110NFDA North Fork Red River Dune Sand and Alluvial 40 110NFDT North Fork Red River Dune Sand & Terrace Aquifer 40 110NFRD North Fork Red River Dune Sand Aquifer 40 110NFRT North Fork Red River Terrace Aquifer 40 110NFTA North Fork Red River Terrace & Alluvial Aquifer 40 110QRNR Quaternary System 40 110RRTA Red River Terrace and Alluvial Aquifer 40 110RRVT Red River Terrace Aquifer 40 110SFRT Salt Fork Red River Terrace Aquifer 40 110SFTA Salt Fork Red River Terrace & Alluvial Aquifer 40 110TRRC Terrace Deposits 40 110TRRCL Terrace, Low, Deposits 40 111EFRR Elm Fork Red River Alluvial Aquifer 40 111NFRR North Fork Red River Alluvial Aquifer 40 111RRVA Red River Alluvial Aquifer 40 111SFRR Salt Fork Red River Alluvial Aquifer 40 112DUNES Dune Sand 40 112ODEE Odee Formation 40 112PLSC Pleistocene Series 40 112TRRCH Terrace, High, Deposits 40 120TRTR Tertiary System 40 121LVRN Laverne Formation 40 121OGLL Ogallala Formation 40 121PLCN Pliocene Series 40 200MSZC Mesozoic Erathem 40 210CRCS Cretaceous System 40 211DKCN Dakota Formation-Cheyenne Sandstone 40 211DKOT Dakota Sandstone or Formation 40 211EAGF Eagle Ford Formation 40 211GRNR Greenhorn Formation 40 211GRRS Graneros Shale 40 212BRNS Brownstown Marl 40 212CLRD Colorado Formation 40 212GLFN Gulfian Series 40 212OZAN Ozan Formation 40 212TOKO Tokio Formation 40 212WDBN Woodbine Formation 40 217CENN Cheyenne Sandstone 40 217KIOW Kiowa Shale 40 217PRGR Purgatoire Formation 40 218ALRS Antlers Sandstone 40 218BKCT Bokchito Formation 40 218BNNG Bennington Limestone 40 218CDDO Caddo Limestone 40 218CMNC Comanchean Series 40 218DKCK Duck Creek Formation 40 218DNTN Denton Clay 40 218DQUN De Queen Limestone 40 218FKBG Fredericksburg Group 40 218FRWR Fort Worth Limestone 40 218GDLD Goodland Limestone 40 218GRSN Grayson Formation 40 218HLCK Holly Creek Formation 40 218KMCH Kiamichi Formation 40 218PLXY Paluxy Sand 40 218PWPW Pawpaw Formation 40 218TRNT Trinity Group 40 218WENO Weno Limestone 40 218WLNT Walnut Clay 40 218WSHT Washita Group 40 220JRSC Jurassic System 40 221EXTR Exeter Sandstone 40 221JRSCU Upper Jurassic Series 40 221MDKM Morrison-Dockum Formations 40 221MRSN Morrison Formation 40 230TRSC Triassic System 40 231DCKM Dockum Group 40 231TRSCU Upper Triassic Series 40 281HLCK Holly Creek Formation 40 300PLZC Paleozoic Erathem 40 300PMPV Permian and Pennsylvanian Systems Undifferentiated 40 310GLRT Glorieta Sandstone 40 310NOLS Nolans Limestone of the Chase Group 40 310PRMN Permian System 40 310WLNG Wellington Formation 40 310WTRS Whitehorse Sandstone or Group 40 311CDCF Cloud Chief Formation 40 311DACK Day Creek Dolomite Member of Cloud Chief Formation 40 311MCCK Moccasin Creek Gypsum Member of Cloud Chief Formation 40 311PRMNU Upper Permian Series 40 311WRFD Weatherford Member of Cloud Chief Formation 40 312DOXY Doxey Member of Quartermaster Formation 40 312ELKC Elk City Member of Quartermaster Formation 40 312OCHO Ochoan Series 40 312QRRM Quartermaster Formation 40 313ACME Acme Dolomite Member of Blaine Formation 40 313BLIN Blaine Gypsum 40 313CDRP Cedartop Gypsum Member of Blaine Formation 40 313CLGR Collingsworth Gypsum Member of Blaine Formation 40 313CRET Creta Dolomite Member of Blaine Formation 40 313DCKB Dog Creek Shale and Blaine Gypsum Aquifer 40 313DCRL Doe Creek Lentil of Marlow Formation 40 313DGCK Dog Creek Shale 40 313ELRN El Reno Group 40 313EMFK Elm Fork Member of Blaine Formation 40 313EMNL Emanuel Dolomite Bed of Marlow Formation 40 313FLRP Flowerpot Shale 40 313GDLP Guadalupian Series 40 313GPCK Gypsum Creek Dolomite Bed (Unformal Usage) of Blaine Fm 40 313GRCM Gracemont Shale Bed of Marlow Formation 40 313GTHR Guthrie Bed (Informal Usage) of Dog Creek Formation 40 313HLLS Hollis Bed (Informal Usage) of Dog Creek Formation 40 313HSCK Haystack Gypsum Member of Blaine Formation 40 313JSTR Jester Dolomite Member of Blaine Formation 40 313MCQN Mcqueen Bed (Informal Usage)of Dog Creek Formation 40 313MNGM Mangum Dolomite Member of Blaine Formation 40 313MRLW Marlow Formation 40 313OLDC Old Crow Bed of Rush Springs Formation 40 313RLCK Relay Creek Dolomite Beds of Marlow Formation 40 313RSPG Rush Springs Formation 40 313STRD Southard Dolomite Bed of Dog Creek Shale 40 313VRDN Verden Sandstone Member of Marlow Formation 40 313VVCR Van Vacter Member of Blaine Formation 40 313VVCR1 Gypsum Bed 1 of Van Vacter Member of Blaine Formation 40 313VVCR2 Gypsum Bed 2 of Van Vacter Member of Blaine Formation 40 313VVCR3 Gypsum Bed 3 of Van Vacter Member of Blaine Formation 40 313VVCR4 Gypsum Bed 4 of Van Vacter Member of Blaine Formation 40 313VVCR5 Gypsum Bed 5 of Van Vacter Member of Blaine Formation 40 313VVCR6 Gypsum Bed 6 of Van Vacter Member of Blaine Formation 40 313WRFD Weatherford Gypsum Bed of Rush Springs Formation 40 313WTNG Watonga Dolomite Bed of Dog Creek Shale 40 317ADMR Admire Group 40 317BRNS Barneston Limestone 40 317CCKS Chickasha Formation of the El Reno Group 40 317CMRN Cimarronian Stage 40 317FORL Fort Riley Limestone Member of the Chase Group 40 317GBWG Garber-Wellington Aquifer 40 317HERG Herington Limestone Member of the Chase Group 40 317WFLD Winfield Limestone 40 317WRFD Wreford Limestone 40 318BSON Bison Banded Member of Hennessey Shale 40 318CCGA Chase, Council Grove, and Admire Groups (undifferentiated) 40 318CDHL Cedar Hills Sandstone Member of Hennessey Shale 40 318CLFK Clear Fork Group 40 318FRMN Fairmont Shale Member of Hennessey Shale 40 318GRBR Garber Sandstone 40 318HNSS Hennessey Shale 40 318KIGM Kingman Sandstone Member of Harper Siltstone 40 318LERD Leonard Formation 40 318OSCR Oscar Sandstone 40 318PRCL Purcell Sandstone Lens In Hennessey Shale 40 318PSOK Post Oak Conglomerate Member of Wichita Formation 40 318SLPL Salt Plain Formation 40 318WICT Wichita Group 40 319ADMR Admire Group 40 319CCGV Council Grove Group 40 319CHSE Chase Group 40 319FRKR Foraker Limestone 40 319GRNL Grenola Limestone 40 319PNTC Pontotoc Group 40 319WOFP Wolfcamp Formation 40 320PSLV Pennsylvanian System 40 321CSCO Cisco Group 40 321TRNT Toronto Limestone Member of Oread Limestone 40 322ADA Ada Formation 40 322CGRC Collings Ranch Conglomerate 40 322DGLS Douglas Group 40 322DRCK Deer Creek Limestone 40 322ELGN Elgin Sandstone Member of Vamoosa Formation 40 322ORED Oread Limestone 40 322SHWN Shawnee Group 40 322STRN Strawn Group 40 322TOPK Topeka Limestone 40 322VMOS Vamoosa Formation 40 322VNSS Vanoss Formation 40 322VRGL Virgilian Series 40 322WBNS Wabaunsee Group 40 323BRDL Barnsdall Formation 40 323CCKB Checkerboard Limestone 40 323CFVL Coffeyville Formation 40 323CHNT Chanute Formation of Ochelata Group 40 323DEWY Dewey Limestone 40 323FRCS Francis Formation 40 323HGSR Hogshooter Limestone 40 323HXBR Hoxbar Formation 40 323IOLA Iola Limestone 40 323KSSC Kansas City Group 40 323LNSG Lansing Group 40 323MSSR Missourian Series 40 323NLBL Nellie Bly Formation 40 323NOXIE Noxie Sandstone Member of Chanute Formation 40 323PLSN Pleasanton Group 40 323SMNL Seminole Formation 40 323TLNT Tallant Formation 40 323TRPD Torpedo Sandstone Member of Wann Formation 40 323WANN Wann Formation 40 324BLCT Belle City Limestone 40 324FRKS Franks Conglomerate 40 324HLTP Hilltop Formation 40 324PSLVM Middle Pennsylvanian Series 40 325ALMN Altamont Limestone 40 325BGGY Boggy Shale 40 325BJCK Bluejacket Sandstone Member of Boggy Shale 40 325BNDR Bandera Shale 40 325CBNS Cabaniss Subgroup 40 325CHLS Chelsea Sandstone Member of Senora Formation 40 325CHRK Cherokee Group 40 325CLVN Calvin Sandstone 40 325DEES Deese Formation 40 325DSMS Des Moinesian Series 40 325FRSC Fort Scott Limestone 40 325HLDV Holdenville Shale 40 325HRSR Hartshorne Sandstone 40 325KRBS Krebs Group 40 325LBTT Labette Shale 40 325LNPH Lenapah Limestone 40 325MCAL McAlester Shale 40 325MRMN Marmaton Group 40 325NOWT Nowata Shale 40 325OLGH Oologah Limestone 40 325PWNE Pawnee Limestone 40 325SNOR Senora Formation 40 325STRT Stuart Shale 40 325SVNN Savanna Sandstone 40 325TRMN Thurman Sandstone 40 325WTMK Wetumka Shale 40 325WWOK Wewoka Formation 40 326ATOK Atoka Formation 40 327PSLVL Lower Pennsylvanian Series 40 327UNVL Union Valley Formation 40 328BLYD Bloyd Shale 40 328CCKC Chickachoc Chert 40 328DCKH Dornick Hills Formation 40 328HALE Hale Formation 40 328JKFK Jackfork Sandstone 40 328JSVL Johns Valley Shale 40 328MRRN Morrowan Series 40 328SPRG Springer Group 40 328WPCK Wapanucka Limestone 40 330MSSP Mississippian System 40 330STNL Stanley Shale 40 331BOON Boone Formation 40 331HDVL Hindsville Limestone 40 331MFLD Moorefield Formation 40 331PTKN Pitkin Limestone 40 332BSVL Batesville Sandstone 40 332CKCK Chickasaw Creek Formation 40 332CSTR Chesterian Series 40 332FTVL Fayetteville Shale 40 332GDRD Goddard Shale Member of Springer Formation 40 332MYRS Moyers Formation 40 332TMCK Tenmile Creek Formation 40 333DLCK Delaware Creek Member of Caney Shale 40 333MRMC Meramecian Series 40 333SGVV Ste. Genevieve Limestone 40 333SPRG Spergen Formation 40 333STLS St. Louis Limestone 40 333WRSW Warsaw Formation 40 337STJO St Joe Limestone Member of Boone Formation 40 338FRGL Fern Glen Limestone 40 338KKUK Keokuk Limestone 40 338OGKK Osagean-Kinderhookian Series 40 338OSGN Osagean Series 40 338RSPG Reeds Spring Limestone 40 338SCMR Sycamore Limestone 40 338SOCK Short Creek Oolite Member of Boone Formation 40 339KDRK Kinderhookian Series 40 339KKCQ Kinderhookian-Chautauquan Series 40 339NRTV Northview Shale 40 340DVNN Devonian System 40 340HNTN Hunton Group 40 340MSNR Misener Sandstone Member of Chattanooga Shale 40 341ARKS Arkansas Novaculite 40 341CTNG Chattanooga Shale 40 341DVNNU Devonian, Upper 40 341WDFD Woodford Chert 40 347DVNNL Devonian, Lower 40 350BLCK Blaylock Sandstone 40 350MSRM Missouri Mountain Slate 40 350SCLR St Clair Limestone 40 350SLRN Silurian System 40 352CYGN Cayugan Series 40 357CMNL Chimney Hill Dolomite 40 357SLRNL Silurian, Lower 40 360ODVC Ordovician System 40 361FRVL Fernvale Limestone 40 361ODVCU Ordovician, Upper 40 361PKCK Polk Creek Shale 40 361SLVN Sylvan Shale 40 361VIOL Viola Limestone 40 361WMBL Womble Formation 40 364BGFK Bigfork Chert 40 364BRGN Burgen Sandstone 40 364BRMD Bromide Formation 40 364EVRN Everton Formation 40 364JONS Joins Formation 40 364MCLS McLish Formation 40 364ODVCM Ordovician, Middle 40 364OLCK Oil Creek Formation 40 364SMPS Simpson Group 40 364TPCK Tulip Creek Formation 40 364TYNR Tyner Formation 40 367ABCK Arbuckle Group 40 367ABCKU Arbuckle Limestone, Upper 40 367BLKL Blakely Sandstone 40 367CLCK Cool Creek Formation 40 367CRLM Crystal Mountain Sandstone 40 367CTJF Cotter-Jefferson City Dolomites 40 367CTTR Cotter Dolomite 40 367GNTR Gunter Sandstone Member of Gasconade Dolomite 40 367GSCD Gasconade Dolomite 40 367GSCDL Gasconade Dolomite, Lower 40 367GSCDU Gasconade Dolomite, Upper 40 367KDBD Kindblade Formation 40 367MKZH Mckenzie Hill Formation 40 367MZRN Mazarn Shale 40 367ODVCL Ordovician, Lower 40 367RBDX Roubidoux Formation 40 367WSCK West Spring Creek Formation 40 368CNDN Canadian Series 40 368JFRC Jefferson City Dolomite 40 368PWLL Powell Dolomite 40 368SACK Swan Creek Sandstone (Informal Unit At Base of Cotter Dolomite) 40 370CLLR Collier Shale 40 370CMBR Cambrian System 40 371ABCKL Arbuckle Formation, Lower 40 371BNTR Bonneterre Dolomite 40 371BTRL Butterly Dolomite 40 371CMBRU Cambrian, Upper 40 371CMGR Upper Cambrian Granite Wash 40 371DBDR Derby-Doerun Dolomites 40 371EMNC Eminence Dolomite 40 371EMPT Eminence-Potosi Dolomites 40 371FRSL Fort Sill Limestone 40 371LKFT Lukfata Sandstone 40 371LMTT Lamotte Sandstone 40 371POTS Potosi Dolomite 40 371REGN Reagan Sandstone 40 371ROYR Royer Dolomite 40 371SGLM Signal Mountain Formation 40 371TMBH Timbered Hills Group 40 400PCGR Precambrian Granite 40 400PCMBV Precambrian Undivided 40 BASEMENT Basement 40 BEDROCK Bedrock 41 100CNZC Cenozoic Erathem 41 100VLFL Valley Fill 41 110ALVF Alluvial Fan Deposits 41 110ALVM Quaternary Alluvium 41 110ALVMO Alluvium, Older 41 110ALVMY Alluvium, Younger 41 110BSLT Basalt 41 110CLVM Colluvium 41 110DUNE Dune Sand 41 110LOSS Loess 41 110QRNR Quaternary System 41 110VLCC Volcanic Rocks 41 110VLFL Valley Fill 41 111ALVM Holocene Alluvium 41 111ALVMY Alluvium, Younger 41 111DUNE Dune Sand 41 111HLCN Holocene Series 41 111MAZM Mazama Pumice 41 111MRSD Marine Sand 41 112ADSCP Andesitic Lava 41 112ALVM Alluvium 41 112ALVMO Alluvium, Older 41 112BRNG Boring Lava 41 112CGLM Conglomerate 41 112FLVC Fluviolacustrine Deposits 41 112LCSR Lacustrine Deposits 41 112MRIN Marine Deposits 41 112PCPC Pleistocene-Pliocene Series 41 112PDMN Piedmont Deposits 41 112PLSC Pleistocene Series 41 112PLUS Palouse Formation 41 112PULNP Paulina Basalt 41 112SGMF Sand and Gravel of Missoula Flood Deposits 41 112SPIG Springwater Formation 41 112TCHT Touchet Beds 41 112TRRC Terrace Deposits 41 112WLMT Willamette Silt 41 120FLVC Fluviolacustrine Deposits 41 121ALKC Alkali Canyon Formation of Dalles Group 41 121BSLT Basalt 41 121CHNT Chenoweth Formation of Dalles Group 41 121DLLS Dalles Group 41 121DNFT Danforth Formation 41 121DSCS Deschutes Formation of Dalles Group 41 121FGLM Fanglomerate Deposits 41 121FRCK Fort Rock Formation 41 121HSBT Haynes Butte Basalt 41 121MCKY Mckay Formation of Dalles Group 41 121PIRK Picture Rock Basalt 41 121SDRV Sandy River Mudstone 41 121SRBR Strawberry Volcanics 41 121TFBC Tuff and Breccia 41 121TGVL Tygh Valley Formation of Dalles Group 41 121TRDL Troutdale Formation 41 121VPSM Volcanic Pyroclastic and Sedimentary Rocks 41 121YONN Yonna Formation 41 122ARMG Armstrong Canyon Unit of Grande Ronde Basalt 41 122ASTR Astoria Formation 41 122BARC Basalt Andesite and Rhyodacite 41 122CBRV Columbia River Basalt Group 41 122DDGE Basalt of Dodge of Eckler Mtn Member of Wanapum Basalt 41 122DNYG Downey Gulch Unit of Grande Ronde Basalt 41 122EGCK Eagle Creek Formation 41 122EKLR Eckler Mountain Member of Wanapum Basalt 41 122ELBG Ellensburg Formation 41 122ELPM Elephant Mountain Member of Saddle Mountains Basalt 41 122FDSP Field Springs Unit of Grande Ronde Basalt 41 122FRDG Fern Ridge Tuff of Sardine Formation 41 122FSPG Frenchman Springs Member of Wanapum Basalt Formation 41 122GDRD Grande Ronde Basalt Formation 41 122GNKG Basalt of Ginkgo of Frenchman Springs Member of Wanapum Basalt 41 122GRCK Grouse Creek Unit of Grande Ronde Basalt 41 122ICHB Ice Harbor Member of Saddle Mountains Basalt 41 122IMNH Imnaha Basalt of Columbia River Basalt Group 41 122JNDY John Day Formation 41 122LKGS Basalt of Lookingglass of Eckler Mountain Member of Wanapum Basalt 41 122LOLO Basalt of Lolo of Priest Rapids Member of Wanapum Basalt 41 122LRML Lower Monumental Member of Saddle Mountains Basalt 41 122LTLBO Little Butte Volcanic Series 41 122LVEY Levey Interbed (Informal Usage) of Ellensburg Formation 41 122LYFY Basalt of Lyons Ferry of Frenchman Springs Member of Wanapum Basalt 41 122MBTN Mabton Member (Informal Usage) of Ellensburg Formation 41 122MOCN Miocene Series 41 122MRDL Basalt of Martindale of Ice Harbor Member of Saddle Mountains Basalt 41 122MRINE Marine Sediments 41 122MSCL Mascall Formation 41 122ORTL Ortley Unit of Grande Ronde Basalt 41 122PCGG Picture Gorge Basalt of Columbia River Basalt Group 41 122PDRV Powder River Volcanics 41 122POMN Pomona Member of Saddle Mountains Basalt 41 122PRPD Priest Rapids Member of Wanapum Basalt Formation 41 122RKRG Rattlesnake Ridge Member (Informal Usage) of Ellensburg Formation 41 122RLSK Rattlesnake Formation 41 122ROZA Roza Member of Wanapum Basalt Formation 41 122RSLA Basalt of Rosalia of Priest Rapids Member of Wanapum Basalt 41 122SDHW Basalt of Sand Hollow of Frenchman Springs Member of Wanapum Basalt 41 122SDLM Saddle Mountains Basalt Formation 41 122SELH Selah Member (Informal Usage) of Ellensburg Formation 41 122SGMF Sand and Gravel of Missoula Flood Deposits 41 122SLKC Slack Canyon Unit of Grande Ronde Basalt 41 122SLSI Basalt of Sillusi of Umatilla Member of Saddle Mtns Basalt 41 122SQCK Squaw Creek Diatomite Bed of Ellensburg Formation 41 122SRDN Sardine Formation 41 122STLB Sentinel Bluffs Unit of Grande Ronde Basalt 41 122STLG Basalt of Sentinel Gap of Frenchman Springs Member of Wanapum Basalt 41 122SVFL Basalt of Silver Falls of Frenchman Springs Member of Wanapum Basalt 41 122TCHT Touchet Beds 41 122UMTL Umatilla Member of Saddle Mountains Basalt 41 122UMUM Basalt of Umatilla of Umatilla Member of Saddle Mtns Basalt 41 122UTNM Umtanum Unit of Grande Ronde Basalt 41 122VNTG Vantage Member of Ellensburg Formation 41 122WNPM Wanapum Basalt Formation 41 122WPSL Wapshilla Ridge Unit of Grande Ronde Basalt 41 122WTRW Winter Water Unit of Grande Ronde Basalt 41 122YKIM Yakima Basalt Subgroup of Columbia River Basalt Group 41 123EOCN Eocene Series 41 123EUGNE Eugen Formation 41 123FSHRE Fisher Formation 41 123KESY Keasey Formation 41 123MRINO Marine Rocks, Older 41 123OGCE Oligocene-Eocene Series 41 123OLGC Oligocene Series 41 123ROXY Roxy Formation 41 123YQUN Yaquina Formation 41 124BSLT Basalt 41 124CLRN Clarno Formation 41 124CLSN Colestin Formation 41 124COLD Coaledo Formation 41 124EOCN Eocene Series 41 124NMSM Nonmarine Sedimentary Rocks 41 124NSTC Nestucca Formation 41 124SPCR Spencer Formation 41 124SZRV Siletz River Volcanic Series 41 124TMKV Tillamook Volcanic Series 41 124TYEE Tyee Formation 41 124UMPQ Umpqua Formation 41 124VLCC Volcanic Rocks 41 124YMHL Yamhill Formation 41 200MEZC Mesozoic Rocks 41 200SDMR Sedimentary Rocks 41 200SERP Serpentine 41 200VLCC Volcanic Rocks 41 211HRBK Hornbrook Formation 41 217GCIVJ Granitic Intrusive Rocks 41 217GRDR Granodiorite 41 217QRZD Quartz Diorite 41 220DTHN Dothan Formation 41 221GLIC Galice Formation 41 221UFIV Ultramafic Intrusive Rocks 41 231APLG Applegate Group 41 231FDCK Fields Creek Formation of Aldrich Mountains Group 41 231LCCK Laycock Graywacke of Aldrich Mountains Group 41 300PLZC Paleozoic Erathem 41 311CNNM Canyon Mountain Complex 41 BASEMENT Basement 41 BEDROCK Bedrock 42 000AMPB Amphibolite 42 000ANRS Anorthosite 42 000GBBR Gabbro and Gabbroic Gneiss 42 000GRDR Granodiorite 42 000GRGS Granite Gneiss 42 000GRNS Greenstone Schist 42 000GRNT Granite 42 000GRPC Graphitic Gneiss 42 000HBLD Hornblende Gneiss 42 000MBSL Metabasalt 42 000MDBS Metadiabase 42 000MFCG Mafic Gneiss 42 000MFCGH Mafic Gneiss, Hornblende-Bearing 42 000MFCGP Mafic Gneiss, Pyroxene-Bearing 42 000MGBR Metagabbro 42 000MTRL Metarhyolite 42 000PGMT Pegmatite 42 000QZMZ Quartz Monzonite 42 000SRPN Serpentinite 42 100CNZC Cenozoic Erathem 42 110BECH Beach Deposits 42 110QRNR Quaternary System 42 111ALVM Holocene Alluvium 42 111BECH Beach Deposits 42 111CLVM Colluvium 42 111FILL Fill 42 111HLCN Holocene Series 42 111SWMP Swamp Deposits 42 111TRRC Terrace Deposits 42 112ALVM Alluvium 42 112BECH Beach Deposits 42 112CLVM Colluvium 42 112CMCL Carmichaels Formation 42 112DRFT Drift 42 112DRML Drumlins 42 112ESKR Eskers 42 112FLVL Fluvial Deposits 42 112ICCC Ice-Contact Deposits, Pleistocene 42 112KAMED Kame Deposits 42 112KMTC Kame Terrace Deposits 42 112LAKE Lake Deposits 42 112LOSS Loess 42 112MORN Moraine 42 112OTSH Outwash 42 112PLSC Pleistocene Series 42 112PNSK Pensauken Formation 42 112SFDF Stratified Drift 42 112TILL Till 42 112TMLM Terminal Moraine Deposits 42 112TMRP Trenton-Magothy-Raritan-Potomac Aquifer System 42 112TREN Trenton Gravel 42 112TRRC Terrace Deposits 42 120TRTR Tertiary System 42 121BRMR Bryn Mawr Formation 42 121PLCN Pliocene Series 42 200MSZC Mesozoic Erathem 42 210CRCS Cretaceous System 42 211CRCSU Upper Cretaceous Series 42 211MGTY Magothy Formation 42 211MRPA Magothy-Raritan-Potomac Aquifer System, Undifferentiated 42 211MRPAL Magothy-Raritan-Potomac Aquifer System, Lower Aquifer 42 211MRPAM Magothy-Raritan-Potomac Aquifer System, Middle Aquifer 42 211MRPAU Magothy-Raritan-Potomac Aquifer System, Upper Aquifer 42 217CRCSL Lower Cretaceous Series 42 217PPSC Patapsco Formation 42 230TRSC Triassic System 42 231BRCK Brunswick Formation 42 231BRCKF Brunswick, Limestone Fanglomerate 42 231BRCKQ Brunswick, Quartz Fanglomerate 42 231BSLT Basalt 42 231DIBS Diabase Dikes and Sills 42 231GBRG Gettysburg Shale 42 231GBRGL Gettysburg Shale, Lower Member 42 231GBRGU Gettysburg Shale, Upper Member 42 231HDBG Heidlersburg Member 42 231HMCK Hammer Creek Formation 42 231LCKG Lockatong Formation 42 231NOXF New Oxford Formation 42 231SCKN Stockton Formation 42 231SCKNL Stockton Formation, Lower Member 42 231SCKNM Stockton Formation, Middle Member 42 231SCKNU Stockton Formation, Upper Member 42 231TRSCU Upper Triassic Series 42 300BLDR Boulder Gneiss of Wissahickon Formation 42 300CCKV Cockeysville Marble 42 300GLRM Glenarm Series 42 300MABG Marburg Schist 42 300MCGM Metaconglomerate of Wissahickon Formation 42 300MGCK Metagraywacke of Wissahickon Formation 42 300OCRR Octararo Phyllite 42 300PLTCL Pelitic Schist, Lower, of Wissahickon Formation 42 300PLTCU Pelitic Schist, Upper, of Wissahickon Formation 42 300PLZC Paleozoic Erathem 42 300PLZCL Paleozoic Erathem, Lower 42 300PRCK Peters Creek Schist 42 300STRS Setters Formation 42 300WKFD Wakefield Marble 42 300WSCK Wissahickon Formation 42 300WSCK1 Wissahickon Formation, Informal Subunit Was-1 42 300WSCK2 Wissahickon Formation, Informal Subunit Was-2 42 300WSCK3 Wissahickon Formation, Informal Subunit Was-3 42 300WSCK4 Wissahickon Formation, Informal Subunit Was-4 42 300WSCK5 Wissahickon Formation, Informal Subunit Was-5 42 300WSCKA Wissahickon Formation, Albite Chlorite Schist 42 300WSCKO Wissahickon Formation, Oligoclase Mica Schist 42 300WSCKV Wissahickon Formation, Metavolcanics 42 310PRMN Permian System 42 317CSVL Cassville Shale Member 42 317DKRD Dunkard Group 42 317GREN Greene Formation 42 317JLTN Jollytown Coal 42 317LLWG Little Washington Coal 42 317NNVHN Nineveh Limestone Member 42 317NNVHS Nineveh Sandstone Member 42 317PRMNL Lower Permian Series 42 317TNML Ten Mile Coal 42 317WBRG Waynesburg Formation 42 317WBRGA Waynesburg A Coal 42 317WBRGB Waynesburg B Coal 42 317WBRGC Waynesburg Coal 42 317WBRGL Waynesburg Formation, Lower Member 42 317WBRGM Waynesburg Formation, Middle Member 42 317WBRGU Waynesburg Formation, Upper Member 42 317WSNG Washington Formation 42 317WSNGC Washington Coal 42 317WSNGL Washington Formation, Lower Member 42 317WSNGM Washington Formation, Middle Member 42 317WSNGU Washington Formation, Upper Member 42 320PSLV Pennsylvanian System 42 321ADBG Arnoldsburg Sandstone 42 321ALBG Albright Limestone 42 321AMES Ames Coal 42 321AMESN Ames Limestone 42 321BFFL Buffalo Sandstone Member of Conemaugh Formation 42 321BKRSL Bakerstown Coal, Lower 42 321BMGM Birmingham Redbed 42 321BNWD Benwood Limestone 42 321BRCK Brush Creek Limestone 42 321BRCKC Brush Creek Coal 42 321BRTN Barton Limestone 42 321BRTNC Barton Coal 42 321CKBG Clarksburg Limestone 42 321CLVL Connellsville Sandstone Member of Conemaugh Formation 42 321CLVLC Clarysville Coal 42 321CMBG Cambridge Limestone 42 321CNMG Conemaugh Formation 42 321CRNT Corinth Sandstone 42 321CSLM Casselman Formation 42 321DQSN Duquesne Coal 42 321EWNG Ewing Limestone 42 321FDLH Federal Hill Coal 42 321FDVL Friendsville Shale 42 321FRKL Franklin Coal 42 321FSPT Fishpot Member of Pittsburgh Formation 42 321FSPTC Fishpot Coal 42 321FSPTN Fishpot Limestone 42 321GLBY Gilboy Sandstone 42 321GLNS Glenshaw Formation 42 321GRFN Grafton Sandstone 42 321HFMN Hoffman Coal Group 42 321HMBR Humbert Coal 42 321IRDL Irondale Limestone 42 321LLLN Llewellyn Formation 42 321LNCG Lonaconing Coal 42 321LPBG Little Pittsburgh Coal 42 321LVVL Lavansville Limestone 42 321LWBG Little Waynesburg Coal 42 321MNNG Mahoning Sandstone Member of Conemaugh Formation 42 321MNNGC Mahoning Coal 42 321MNNGL Mahoning Sandstone, Lower Member 42 321MNNGR Mahoning Redbed 42 321MNNGU Mahoning Sandstone, Upper Member 42 321MOGL Monongahela Group 42 321MRDL Meyersdale Redbed 42 321MRGN Morgantown Sandstone Member of Conemaugh Formation 42 321MRGNC Morgantown Coal 42 321NVRN Niverton Shale 42 321PBRG Pittsburgh Formation 42 321PBRGC Pittsburgh Coal 42 321PBRGL Pittsburgh Formation, Lower Member 42 321PBRGN Pittsburg Limestone, Lower 42 321PBRGR Pittsburgh Redbed 42 321PBRGS Pittsburgh Sandstone 42 321PBRGU Pittsburgh Formation, Upper Member 42 321PCRK Pine Creek Limestone 42 321PSLVU Upper Pennsylvanian Series 42 321RDSN Redstone Member of Pittsburgh Formation 42 321RDSNC Redstone Coal 42 321RDSNN Redstone Limestone 42 321SCKL Sewickley Member 42 321SCKLC Sewickley Coal 42 321SCKLS Sewickley Sandstone 42 321SLBG Saltsburg Sandstone 42 321SMRL Summerhill Sandstone Member of Conemaugh Formation 42 321THMS Thomas Clay 42 321TRNN Thornton Clay 42 321UFNG Uffington Shale 42 321UNNN Uniontown Formation 42 321UNNNC Uniontown Coal 42 321UNNNL Uniontown Formation, Lower Member 42 321UNNNN Uniontown Limestone 42 321UNNNS Uniontown Sandstone 42 321UNNNU Uniontown Formation, Upper Member 42 321UPBK Upper Bakerstown Coal 42 321WDSR Woods Run Limestone 42 321WLBG Wellersburg Limestone 42 321WLBGC Wellersburg Coal 42 321WLMR Wilmore Sandstone Member of Conemaugh Formation 42 324ALEG Allegheny Group 42 324ALPV Allegheny and Pottsville Groups, Indiff. 42 324BKVL Brookville Coal 42 324BLVR Bolivar Clay 42 324BTLR Butler Sandstone 42 324CFCK Clearfield Creek Formation 42 324CLMB Columbiana Shale 42 324CLRN Clarion Formation 42 324CLRNL Clarion Coal, Lower 42 324CLRNS Clarion Sandstone Member 42 324CLRNU Clarion Coal, Upper 42 324CRVL Curwensville Formation 42 324FRPR Freeport Formation 42 324FRPRA Freeport Coal, Upper 42 324FRPRB Freeport Coal, Middle 42 324FRPRC Freeport Coal, Lower 42 324FRPRL Freeport Limestone 42 324FRPRS Freeport Sandstone 42 324GLRC Glen Richey Formation 42 324HMWD Homewood Formation 42 324HMWDS Homewood Sandstone Member 42 324JNSN Johnstown Limestone 42 324KNNG Kittanning Formation 42 324KNNGA Kittanning Coal Group, Upper 42 324KNNGB Kittanning Coal Group, Middle 42 324KNNGC Kittanning Coal Group, Lower 42 324KNNGL Kittanning Formation or Member, Lower 42 324KNNGM Kittanning Formation or Member, Middle 42 324KNNGN Kittanning Limestone 42 324KNNGS Kittanning Sandstone Member of Allegheny Formation 42 324KNNGU Kittanning Formation or Member, Upper 42 324LRLR Laurel Run Formation 42 324MLSR Millstone Run Formation 42 324MRCR Mercer Formation 42 324MRCRC Mercer Coal Group 42 324MSPG Mineral Springs Formation 42 324PSLVM Middle Pennsylvanian Series 42 324PSVL Pottsville Formation 42 324SCBG Scrubgrass Coal 42 324SRPM Sharp Mountain 42 324VNPR Vanport Limestone Member of Allegheny Formation 42 324WGVL Washingtonville Shale 42 324WRNGL Worthington Sandstone Member, Lower 42 324WRNGU Worthington Sandstone Member, Upper 42 324WRPR Westernport Sandstone 42 327CQSG Connoquenessing Formation 42 327CQSGL Connoquenessing Formation, Lower Member 42 327CQSGM Connoquenessing Formation, Middle Member 42 327CQSGU Connoquenessing Formation, Upper Member 42 327ELPK Elliot Park Formation 42 327MCCK Mauch Chunk Formation 42 327MCCKU Mauch Chunk Formation, Upper Member 42 327NRVR New River Formation 42 327OLEN Olean Sandstone Member of Pottsville Formation 42 327PNVL Pineville Sandstone Member of New River Formation 42 327PSLVL Lower Pennsylvanian Series 42 327QKRN Quakertown Member of Connoquenessing Formation 42 327QKRNC Quakertown Coal 42 327SCLK Schuylkill Member of Pottsville Formation 42 327SHRN Sharon Formation 42 327SHRNC Sharon Conglomerate 42 327TBGR Tumbling Run Member of Pottsville Formation 42 330MSSP Mississippian System 42 331DRVL Deer Valley Limestone 42 331GRBR Greenbrier Limestone 42 331MCCK Mauch Chunk Formation 42 331MCCKL Mauch Chunk Formation, Lower Member 42 331MCCKM Mauch Chunk Formation, Middle Member 42 331MSSPU Mississippian, Upper 42 331TGCK Trough Creek Limestone 42 331WPGP Wymps Gap Limestone 42 337BBCR Berea, Bedford, Cussewago, and Riceville Fm., Undiff. 42 337BCKV Beckville Member 42 337BCRV Berea, Bedford, Cussewago, Riceville, and Venango Fm., Undiff. 42 337BDFD Bedford Shale 42 337BERE Berea Sandstone 42 337BGIJ Big Injun Sand 42 337BRGN Burgoon Member of Pocono Formation 42 337CBCR Corry, Bedford, Cussewago, and Riceville Fm., Undiff. 42 337CRRY Corry Formation 42 337CSSG Cussewago Formation 42 337CYHG Cuyahoga Group 42 337HMPF Hempfield Shale 42 337HNLM Huntley Mountain Formation 42 337KNPP Knapp Formation 42 337LLNN Loyalhanna Limestone 42 337MCRB Mount Carbon Member of Pocono Formation 42 337MDVL Meadville Formation 42 337MRVL Murrysville Formation 42 337MSSPL Mississippian, Lower 42 337MYRS Myers Shale 42 337OGVL Orangeville Shale or Formation 42 337PNKR Pinkerton Sandstone 42 337POCN Pocono Formation 42 337PTTN Patton Shale 42 337RCKL Rockwell Formation 42 337RDBG Riddlesburg Shale Member of Pocono Formation 42 337SLMH Shellhammer Hollow Formation 42 337SNNG Shenango Formation 42 337SNNGL Shenango Formation, Lower Member 42 337SNNGU Shenango Formation, Upper Member 42 337SPKP Spechty Kopf Formation 42 337SPVL Sharpsville Formation 42 337SQUW Squaw Sand 42 340DVNN Devonian System 42 341ALGP Allegrippis Sandstone Member of Chemung Formation 42 341AMTY Amity Shale 42 341BDSR Buddys Run Member of Catskill Formation 42 341BLHL Brallier, Harrel Formations Undifferentiated 42 341BRKT Burkett Member of Rush Formation 42 341BRLR Brallier Formation 42 341BRRN Berry Run Member of Catskill Formation 42 341BRSR Berry Run and Sawmill Run Mbrs of Catskill Formation, Undivided 42 341BVMR Beaverdam Run Member of Catskill Formation 42 341CDKN Chadakoin Formation 42 341CLKF Clarks Ferry 42 341CMNG Chemung Formation 42 341CMNGB Chemung Formation, Marine Beds 42 341CMNGR Marine Beds of Chemung Formation 42 341CNDY Canadaway Formation 42 341CNNG Conewango Group 42 341CNNT Conneaut Formation 42 341CRDG Cherry Ridge Formation or Member 42 341CRGS Cattaraugus Formation 42 341CSKL Catskill Formation 42 341CSKLL Catskill Formation, Lower Redbeds Member 42 341CSKLS Catskill Formation, Upper Sandstone Member 42 341CSKLU Catskill Formation, Upper Redbeds Member 42 341DKRK Dunkirk Formation 42 341DLRV Delaware River Formation 42 341DNCN Duncannon Member of Catskill Formation 42 341DVNNU Devonian, Upper 42 341FKLD Franklindale Limestone Member of Chemung Formation 42 341FLCK Fall Creek Conglomerate Member of Chemung Formation 42 341FRKB Foreknobs Formation 42 341GRDU Gardeau Formation 42 341GRRD Girard Formation 42 341HMPR Hampshire Formation 42 341HRRL Harrell Shale 42 341HSDL Honesdale Formation or Member of Catskill Formation 42 341IRVL Irish Valley Member of Catskill Formation 42 341JNGS Jennings Formation 42 341KGML Kings Mill Member of Catskill Formation 42 341LCKX Lackawaxen Formation 42 341LKHV Lock Haven Formation 42 341LNGR Long Run Member of Catskill Formation 42 341LRBW Long Run, Beaverdam Run, Walckville Mbrs of Catskill Fm, Undivided 42 341MDLX Middlesex Formation 42 341MLRF Millrift Formation 42 341MPLS Mount Pleasant Formation 42 341NMFD New Milford Formation 42 341NRTS Northeast Shale 42 341NUND Nunda Formation 42 341OSWY Oswayo Formation 42 341PCKR Packerton Member of Catskill Formation 42 341PGPK Poplar Gap and Packerton Mbrs of Catskill Formation, Undivided 42 341PLGP Poplar Gap Member of Catskill Formation 42 341PPCK Pipe Creek Formation 42 341PRDG Piney Ridge Sandstone Memeber of Chemung Formation 42 341RCVL Riceville Formation 42 341RNSR Rhinestreet Formation 42 341RUSH Rush Formation 42 341SCRR Scherr Formation 42 341SHHL Shohola Formation 42 341SLBK Sloat Brook Formation 42 341SLMC Salamanca Formation 42 341SMCK Sherman Creek Member of Catskill Formation 42 341SMLR Sawmill Run Member of Catskill Formation 42 341SNFS Sunfish Formation 42 341SONY Sonyea Formation 42 341SSQN Susquehanna Group 42 341SXTN Saxton Conglomerate Member of Chemung Formation 42 341TMRK Trimmers Rock Formation 42 341TMSG Towamensing Member of Catskill Formation 42 341TRKH Trimmers Rock and Harrell Formations, Undifferentiated 42 341TWND Towanda Formation 42 341VNNG Venango Formation 42 341WCKV Walcksville Member of Catskill Formation 42 341WDMN Woodmont Formation 42 341WLTN Walton Group 42 341WSCY Wiscoy Formation 42 344BMKF Buttermilk Falls Formation 42 344BVDM Beaver Dam Black Shale Member of Needmore Shale 42 344CFLD Centerfield Zone 42 344DLMT Dalmatia Member 42 344DVNNM Devonian, Middle 42 344ESPS Esopus Formation 42 344FCRG Fischer Ridge Member 42 344HMLN Hamilton Group 42 344KNKL Kunkeltown Zone 42 344LLGP Little Gap Zone 42 344MNBL Montebello Sandstone Member of Mahantango Formation 42 344MNNG Mahantango Formation 42 344MRCL Marcellus Shale 42 344NDMR Needmore Shale 42 344NSHL Nis Hollow Member 42 344ODOP Onondaga, Old Port Formations Undifferentiated 42 344ONDG Onondaga Limestone 42 344ROMN Romney Shale 42 344SCEP Schoharie and Esopus Formations, Undifferentiated 42 344SLGV Selinsgrove Member or Limestone of Onondaga Limestone 42 344SMRG Sherman Ridge Formation or Member of Mahantango Formation 42 344SPRB Sparrow Bush Formation 42 344TKRG Turkey Ridge Member of Marcellus Shale 42 344TLLY Tully Limestone 42 347ADRS Andreas Red Beds 42 347BCRF Becraft Limestone 42 347CMNS Coeymans Limestone 42 347DEPU Depue Limestone Member of Coeymans Formation 42 347DNVL Duttonville Member of Rondout Formation 42 347DVNNL Devonian, Lower 42 347FBKV Flatbrookville Member of New Scotland Formation 42 347HDBG Helderberg Group 42 347KKBG Kalkberg Limestone 42 347KRTL Keyser, Tonoloway Formations Undifferentiated 42 347KTWC Keyser, Tonoloway, Wills Creek, Bloomsburg, Mifflintown Fms and Clinto 42 347KTWM Keyser, Tonoloway, Wills Creek, Bloomsburg, Mifflintown Formations, Un 42 347KYSR Keyser Limestone 42 347MNDT Mandata Member of Helderberg Formation 42 347MNLS Manlius Formation 42 347MNSK Minisink Limestone 42 347MPCG Mashipacong Member of Rondout Formation 42 347MSKZ Maskenozha Member of New Scotland Formation 42 347NSCD New Scotland Limestone 42 347OLDP Old Port Formation 42 347ORIS Oriskany Sandstone 42 347PLMR Palmerton Formation 42 347PREN Port Ewen Shale 42 347PRVL Peters Valley Member of Coeymans Formation 42 347RDGL Ridgeley Sandstone 42 347RNDT Rondout Formation 42 347SCHR Schoharie Formation 42 347SILD Shawnee Island Member of Coeymans Formation 42 347SMVL Stormville Member of Coeymans Formation 42 347SRVR Shriver Chert 42 347WTPR Whiteport Dolomite Member of Rondout Formation 42 350SLRN Silurian System 42 351BBGM Bloomsburg, Mifflintown Formations Undifferentiated 42 351BDGP Bridgeport Member of Bloomsburg Formation 42 351BDVL Bossardville Formation 42 351BMBG Bloomsburg Formation 42 351CYUG Cayuga Group 42 351DCKR Decker Formation 42 351PXID Poxono Island Formation 42 351SLRNU Silurian, Upper 42 351TNLY Tonoloway Limestone 42 351WLCK Wills Creek Formation 42 351WLCKL Wills Creek Formation, Lower Member 42 351WLCKU Wills Creek Formation, Upper Member 42 351WPKC Wallpack Center Member of Decker Formation 42 354CBHL Cabin Hill Member of Rose Hill Formation 42 354CLNN Clinton Formation 42 354CNTR Center Member of Rose Hill Formation 42 354KEFR Keefer Sandstone Member of Clinton Formation 42 354MCKZ Mc Kenzie Formation 42 354MFLN Mifflintown Formation 42 354RCSR Rochester Member of Mufflintown Formation 42 354RSHL Rose Hill Formation 42 354RSHLL Rose Hill Formation, Lower Member 42 354RSHLM Rose Hill Formation, Middle Member 42 354RSHLU Rose Hill Formation, Upper Member 42 354SLRNM Silurian, Middle 42 354SNGK Shawangunk Formation 42 354SNGKM Shawangunk Formation, Middle Member 42 354SNGKU Shawangunk Formation, Upper Member 42 357CSTN Castanea Member of Tuscarora Formation 42 357SLRNL Silurian, Lower 42 357SNGKL Shawangunk Formation, Lower Member 42 357TCRR Tuscarora Sandstone 42 360CRDF Cardiff Metaconglomerate 42 360PCBM Peach Bottom Slate 42 361BDEG Bald Eagle Formation 42 361BSKL Bushkill Member of Martinsburg Formation 42 361CCLC Cocalico Formation 42 361CCLCP Cocalico Phyllite 42 361JBEG Juniata and Bald Eagle Formations 42 361JUNT Juniata Formation 42 361LSRN Lost Run Member of Bald Eagle Formation 42 361MLHL Mill Hill Slate Formation 42 361MRBG Martinsburg Shale 42 361MRBGA Martinsburg Shale, A Unit 42 361MRBGB Martinsburg Shale, B Unit 42 361MRBGC Martinsburg Shale, C Unit 42 361MRBGD Martinsburg Shale, D Unit 42 361MRBGE Martinsburg Shale, E Unit 42 361MRBGF Martinsburg Shale, F Unit 42 361MRBGG Martinsburg Shale, G Unit 42 361MRBGH Martinsburg Shale, H Unit 42 361MRBGL Martinsburg Shale, Lower Member 42 361MRBGM Martinsburg Shale, Middle Member 42 361MRBGN Martinsburg Formation, Basal Limestone 42 361MRBGU Martinsburg Shale, Upper Member 42 361ODVCU Ordovician, Upper 42 361PAGL Pen Argyl Member of Martinsburg Shale 42 361RDVL Reedsville Formation 42 361RMBG Ramseyburg Member of Martinsburg Shale 42 361SCRY Shochary Sandstone 42 361SHLE Shale 42 364ANTS Antes Formation 42 364ANVL Annville Formation 42 364BKMN Beekmantown Group 42 364BNNR Benner Formation 42 364BSHL Benner, Snyder, Hatter, Loysburg Formations Undifferentiated 42 364CBBG Chambersburg Formation 42 364CBRN Coburn Formation 42 364CBSN Coburn, Salona, Nealmont Formations Undifferentiated 42 364CRHL Center Hall Member of Nealmont Formation 42 364CRTN Curtin Formation 42 364CSNL Coburn, Salona, Nealmont, Benner, Snyder, Hatter, Loysburg Fms. 42 364EYER Eyer Member of Hatter Formation 42 364GRZR Grazier Member of Hatter Formation 42 364HMBG Hamburg Sequence 42 364HMBG1 Hamburg Sequence, Subunit 1 42 364HMBG2 Hamburg Sequence, Subunit 2 42 364HMBG3 Hamburg Sequence, Subunit 3 42 364HMBG4 Hamburg Sequence, Subunit 4 42 364HMBG5 Hamburg Sequence, Subunit 5 42 364HMBG6 Hamburg Sequence, Subunit 6 42 364HMBG7 Hamburg Sequence, Subunit 7 42 364HMBG8 Hamburg Sequence, Subunit 8 42 364HMBG9 Hamburg Sequence, Subunit 9 42 364HMBGA Hamburg Sequence, Subunit 2a 42 364HMBGB Hamburg Sequence, Subunit 2b 42 364HNTR Hunter Formation 42 364HRMA Hershey-Myerstown-Annville Aquifer 42 364HRMR Hershey and Myerstown Formations, Undifferentiated 42 364HRSY Hershey Formation 42 364HSLR Hostler Member of Hatter Formation 42 364HTTR Hatter Formation 42 364JKBG Jacksonburg Formation 42 364JKBGC Jacksonburg Formation, Cement Limestone 42 364JKBGR Jacksonburg Formation, Cement Rock 42 364LDHL Linden Hall Formation 42 364LVLL Lowville Formation 42 364MRSN Myerstown Formation 42 364NLMN Nealmont Formation 42 364ODVCM Ordovician, Middle 42 364OKHL Oak Hall Member of Nealmont Formation 42 364ONLN Ontelaunee Formation 42 364RDMN Rodman Limestone or Member of Nealmont Formation 42 364SLON Salona Formation 42 364SNDR Snyder Member of Benner Formation 42 364STPL St Paul Group 42 364STVR Stover Member of Benner Formation 42 364TRNN Trenton Limestone 42 364VLLV Valley View Member of Curtin Formation 42 364VLNN Valentine Member of Curtin Formation 42 365BKRV Black River Formation 42 367AXMN Axemann Formation 42 367BFAX Axemann, Bellefonte Formations 42 367BLFN Bellefonte Formation 42 367CALM Carlim Limestone 42 367CLVR Clover Member of Loysburg Formation 42 367CNSG Conestoga Formation 42 367EPLR Epler Formation 42 367LBRG Loysburg Formation 42 367LRKE Larke Formation 42 367MLRY Milroy Member of Loysburg Formation 42 367NNLK Nittany Larke Formations 42 367NTTN Nittany Formation 42 367ODVCL Ordovician, Lower 42 367PBGS Pinesburg Station Dolomite 42 367RCKB Rickenbach Formation 42 367RCKR Rockdale Run Formation 42 367SFRS Stoufferstown Formation 42 367SNNG Stonehenge Formation 42 367TGSP Tiger-Striped Member 42 370CMBR Cambrian System 42 371ALNN Allentown Formation 42 371CCCGG Conococheague Group 42 371CMBRU Cambrian, Upper 42 371ELBK Elbrook Formation 42 371GBRG Gatesburg Formation 42 371GBRGL Gatesburg Formation, Lower Sandy Member 42 371GBRGU Gatesburg Formation, Upper Sandy Member 42 371LMPR Limeport Formation 42 371MDCK Maiden Creek Member of Allentown Formation 42 371MINS Mines Formation or Member of Gatesburg Formation 42 371MLBC Milbach Formation 42 371MLBG Muhlenberg Member of Allentown Formation 42 371ORHL Ore Hill Member of Gatesburg Formation 42 371PSDM Potsdam Sandstone 42 371RCLD Richland Formation 42 371SCFR Schaefferstown Formation 42 371SDGV Shadygrove Formation 42 371STCY Stacy Member of Gatesburg Formation 42 371SZCK Snitz Creek Formation 42 371TCKR Tuckerton Member of Allentown Formation 42 371WRRR Warrior Formation 42 371ZLGR Zullinger Formation 42 374BSPG Buffalo Springs Formation 42 374CMBRM Cambrian, Middle 42 374LSVL Leithsville Formation 42 374PLHL Pleasant Hill Formation 42 374ZKCR Zooks Corner Formation 42 377AMHP Antietam, Harpers Formation 42 377ANTM Antietam Formation 42 377CCKS Chickies Formation 42 377CHLH Chilhowee Group 42 377CMBRL Lower Cambrian Series 42 377HLLM Hellam Member of Chickies Formation 42 377HRDS Hardyston Quartzite 42 377HRPR Harpers Formation 42 377KZRS Kinzers Formation 42 377LDGR Ledger Formation 42 377LUDN Loudoun Formation 42 377MNTL Montalto Member of Harpers Formation 42 377TMSN Tomstown Dolomite 42 377VNTG Vintage Formation 42 377WSBR Waynesboro Formation 42 377WVRN Weverton Formation 42 400AMPB Amphibolite 42 400ANRS Anorthosite 42 400BLMR Baltimore Gneiss 42 400BMFGA Banded Mafic Gneiss, Amphibolite Facies 42 400BYRM Byram Gneiss 42 400FCIGA Felsic and Intermediate Gneiss, Amphibolite Facies 42 400FLCG Felsic Gneiss 42 400FLCGA Felsic Gneiss, Amphibolite Facies 42 400FLCGG Felsic Gneiss, Granulite Facies 42 400FLCGH Felsic Gneiss, Hornblende-Bearing 42 400FLCGP Felsic Gneiss, Pyroxene-Bearing 42 400FMFG Felsic and Mafic Gneiss 42 400FRKL Franklin Limestone 42 400GPCGA Graphitic Gneiss, Amphibolite Facies 42 400GPCGG Graphitic Gneiss, Granulite Facies 42 400GRCG Granitic Gneiss 42 400GRLGB Granulite Gneiss, Mafic 42 400GRLGF Granulite Gneiss, Felsic 42 400LOSE Losee Diorite Gneiss 42 400MFCG Mafic Gneiss 42 400MFCGG Mafic Gneiss, Granulite Facies 42 400MFCGH Mafic Gneiss, Hornblende-Bearing 42 400MFCGP Mafic Gneiss, Pyroxene-Bearing 42 400MRVN Moravian Heights Formation 42 400PCCK Pochuck Gneiss 42 400PCKG Pickering Gneiss 42 400PCMB Precambrian Erathem 42 400SPGF Springfield Granodiorite 42 BASEMENT Basement 42 BEDROCK Bedrock 44 111ALVM Holocene Alluvium 44 111BECH Beach Deposits 44 111CLVM Colluvium 44 111EOLN Eolian Deposits 44 111FILL Fill 44 111MRIN Marine Deposits 44 111SDMN Sediments, Undifferentiated 44 111SWMP Swamp Deposits 44 112DELT Delta Deposits 44 112ICCCE Ice-Contact Deposits, Including Eskers and Kames 44 112LCSR Lacustrine Deposits 44 112MORND Moraine Deposits, Except Ground Moraine and Drumlins 44 112MRIN Marine Deposits 44 112OTSH Outwash 44 112SRFD Stratified Deposits, Undifferentiated 44 112TILL Till 44 120SDMS Sediments 44 200CRSL Crystalline Rocks 44 210SDMS Sediments, Undifferentiated 44 230IGNSE Igneous Rocks, Extrusive 44 230IGNSI Igneous Rocks, Intrusive 44 230SDMR Triassic Sedimentary Rocks 44 231EBRL East Berlin Formation 44 231HLYK Holyoke Basalt 44 231HMPD Hampden Basalt 44 231NHVN New Haven Formation 44 231PRLD Portland Formation 44 300CRSL Crystalline Rocks, Undifferentiated 44 300CRSLC Crystalline Rocks, Carbonate 44 300CRSLN Crystalline Rocks, Noncarbonate 44 320CRSL Crystalline Rocks 44 320SDMR Sedimentary Rocks 44 330CRSL Crystalline Rocks 44 330SDMR Sedimentary Rocks 44 340CRSL Crystalline Rocks, Undifferentiated 44 340CRSLC Crystalline Rocks, Carbonate 44 340CRSLN Crystalline Rocks, Noncarbonate 44 350CRSL Crystalline Rocks, Undifferentiated 44 350CRSLC Crystalline Rocks, Carbonate 44 350CRSLN Crystalline Rocks, Noncarbonate 44 360CRSL Crystalline Rocks, Undifferentiated 44 360CRSLC Crystalline Rocks, Carbonate 44 360CRSLN Crystalline Rocks, Noncarbonate 44 370CRSL Crystalline Rocks, Undifferentiated 44 370CRSLC Crystalline Rocks, Carbonate 44 370CRSLN Crystalline Rocks, Noncarbonate 44 400CRSL Crystalline Rocks, Undifferentiated 44 400CRSLC Crystalline Rocks, Carbonate 44 400CRSLN Crystalline Rocks, Noncarbonate 44 BASEMENT Basement 44 BEDROCK Bedrock 45 100CLTC Coastal Terrace Deposits 45 100RGLT Regolith 45 100TRNS Transition Zone 45 110QRNR Quaternary System 45 111ALVM Holocene Alluvium 45 111HLCN Holocene Series 45 111SANDD Sand Deposits 45 112CNPC Canepatch Formation 45 112LDSN Ladson Formation 45 112PLSC Pleistocene Series 45 112PMLC Pamlico Formation 45 112PNLY Penholoway Formation 45 112SANDD Sand Deposits 45 112SVBF Silver Bluff Formation 45 112TMLH Ten Mile Hill Beds (Informal) 45 112WNDO Wando Formation 45 120FDDB Floridan, Millers Pond, and Dublin Aquifers (Multiaquifer) 45 120FDMP Floridan, and Millers Pond Aquifers (Multiaquifer) 45 120FDMV Floridan, Millers Pond, Dublin and Midville Aquifers (Multiaquifer) 45 120FLRD Floridan Aquifer System 45 120FLRDM Middle Floridan Aquifer 45 120FLRDU Upper Floridan Aquifer 45 120TRSD Tertiary Sand Aquifer 45 120TRTR Tertiary System 45 121BBLF Bear Bluff Formation 45 121GCRK Goose Creek Limestone 45 121PLCN Pliocene Series 45 121RYSR Raysor Formation 45 121WCCM Waccamaw Formation 45 121YRKN Yorktown Formation 45 122CSTC Coosawhatchie Clay Member of Hawthorn Formation 45 122DPLN Duplin Formation 45 122EDST Edisto Formation 45 122HTRN Hawthorn Formation 45 122MKHD Marks Head Formation 45 122MOCN Miocene Series 45 122TAMP Tampa Limestone 45 123ASLY Ashley Formation of Cooper Group 45 123CDBG Chandler Bridge Formation 45 123COOP Cooper Marl Group 45 123FLRV Flint River Formation 45 123OLGC Oligocene Series 45 124AIKN Aiken Formation 45 124BKMG Black Mingo Formation 45 124BMBG Bamberg Formation 45 124BRNL Barnwell Formation 45 124CNGR Congaree Formation 45 124CRSS Cross, Member of Santee Limestone 45 124CSLH Castle Hayne Limestone 45 124EOCN Eocene Series 45 124FSBR Fishburne Formation 45 124GDDB Gordon, Millers Pond, and Dublin Aquifers (Multiaquifer) 45 124GDMP Gordon and Millers Pond Aquifers (Multiaquifer) 45 124GDMV Gordon, Millers Pond, Dublin and Midville Aquifers (Multiaquifer) 45 124GRDN Gordon Aquifer System 45 124HLVL Harleyville Formation of Cooper Group 45 124HUBR Huber Formation 45 124MCBN Mc Bean Formation 45 124MLTR Moultrie Member of Santee Limestone 45 124NESS Neeses Formation 45 124OCAL Ocala Limestone 45 124OGBG Orangeburg Group 45 124PRKF Parkers Ferry Formation of Cooper Group 45 124SNTE Santee Limestone 45 124UPTR Upper Three Runs Aquifer 45 124WLHL Warley Hill Marl 45 125BFRT Beaufort Formation 45 125BKMG Black Mingo Formation 45 125BRFR Browns Ferry Member of Rhems Formation 45 125CHCR Chicora Member of Williamsburg Formation 45 125DBLN Dublin Aquifer System 45 125DBLNL Dublin Aquifer System, Lower Aquifer 45 125DBLNU Dublin Aquifer System, Upper Aquifer 45 125DBMV Dublin-Midville Aquifer System 45 125ELNN Ellenton Formation 45 125LDBG Lower Bridge Member of Williamsburg Formation 45 125LNGS Lang Syne Member of Rhems Formation 45 125MPDB Millers Pond and Dublin Aquifers (Multiaquifer) 45 125MPMV Millers Pond, Dublin, and Midville Aquifers (Multiaquifer) 45 125MRBC Meyers Branch Confining System 45 125MSPD Millers Pond Aquifer 45 125PKMS Perkins Bluff Member of Rhems Formation 45 125PLCN Paleocene Series 45 125RHMS Rhems Formation 45 125SDLG Sawdust Landing Member of Rhems Formation 45 125WMBG Williamsburg Formation 45 200MSZC Mesozoic Erathem 45 210CRCS Cretaceous System 45 211BKCK Black Creek Formation 45 211CCHB Crouch Branch Aquifer 45 211CHRL Charleston Aquifer 45 211CPFR Cape Fear Formation 45 211CRCSU Upper Cretaceous Series 45 211EUTW Eutaw Formation 45 211GMLG Gramling Aquifer 45 211MCQB McQueen Branch Aquifer 45 211MDDF Middendorf Formation 45 211MDVL Midville Aquifer System 45 211MDVLL Midville Aquifer System, Lower Aquifer 45 211MDVLU Midville Aquifer System, Upper Aquifer 45 211PEED Peedee Formation 45 211SNHL Snow Hill Marl Member of Black Creek Formation 45 211TSCL Tuscaloosa Formation 45 217CRAQL Lower Cretaceous Aquifer System, Undifferentiated 45 220JRSC Jurassic System 45 230TRSC Triassic System 45 231NWRK Newark Group 45 300AGGS Augen Gneiss 45 300ALSK Alaskite 45 300ANDS Andesite 45 300APIB Amphibolite 45 300ARGL Argillite 45 300BRCC Breccia 45 300BSLT Basalt 45 300CGLM Conglomerate 45 300DCIT Dacite 45 300DIBS Diabase 45 300DLMT Dolomite 45 300DLRT Dolerite (Diabase) 45 300DORT Diorite 45 300DUNT Dunite 45 300GBBR Gabbro 45 300GNSS Gneiss 45 300GRCK Graywacke 45 300GRDR Granodiorite 45 300GRGS Granite Gneiss 45 300GRNT Granite 45 300HBDG Hornblende Gneiss 45 300MCGS Mica Gneiss 45 300MCSC Mica Schist 45 300MGRK Metaigneous 45 300MMRK Metasedimentary Rocks 45 300MNZN Monzonite 45 300MPRK Metamorphic Rocks 45 300MRBL Marble 45 300MVRK Metavolcanic Rocks 45 300PEGM Pegmatite 45 300PLLT Phyllite 45 300PLZC Paleozoic Erathem 45 300PZPB Paleozoic-Precambrian Erathems 45 300QRTZ Quartzite 45 300RYLT Rhyolite 45 300SCST Schist 45 300SHLE Shale 45 300SLSN Siltstone 45 300SLTE Slate 45 300SNDS Sandstone 45 300SYNT Syenite 45 300TRCT Trachyte 45 300TUFF Tuff 45 310PRMV Permian System 45 310YKVL Yorkville Quartz Monzonite 45 400AGGS Augen Gneiss 45 400ALSK Alaskite 45 400AMPB Amphibolite 45 400ANDS Andesite 45 400ARGL Argillite 45 400BRCC Breccia 45 400BSLT Basalt 45 400CGLM Conglomerate 45 400DCIT Dacite 45 400DLMT Dolomite 45 400DLRT Dolerite (Diabase) 45 400DORT Diorite 45 400DUNT Dunite 45 400GBBR Gabbro 45 400GNSS Gneiss 45 400GRCK Graywacke 45 400GRDR Granodiorite 45 400GRGS Granite Gneiss 45 400GRNT Precambrian Granite 45 400HBDG Hornblende 45 400MCGS Mica Gneiss 45 400MCSC Mica Schist 45 400MGRK Metaigneous Rocks 45 400MMRK Metasedimentary Rocks 45 400MNZN Monzonite 45 400MPRK Metamorphic Rocks 45 400MRBL Marble 45 400MVRK Metavolcanic Rocks 45 400PGMT Pegmatite 45 400PLLT Phyllite 45 400QRTZ Quartzite 45 400RYLT Rhyolite 45 400SCST Schist 45 400SHLE Shale 45 400SLSN Siltstone 45 400SLTE Slate 45 400SNDS Sandstone 45 400SYNT Syenite 45 400TRCT Trachyte 45 400TUFF Tuff 45 BASEMENT Basement 45 BEDROCK Bedrock 46 100CNZC Cenozoic Erathem 46 110ALVM Quaternary Alluvium 46 110AVTN Alluvium, Terrace, Non-Glacial 46 110QRNR Quaternary System 46 111ALVM Holocene Alluvium 46 112ALMN Altamont Aquifer 46 112ALMNL Altamont Aquifer 3 46 112ALMNM Altamont Aquifer 2 46 112ALMNU Altamont Aquifer 1 46 112ALPV Antelope Valley 46 112AURR Aurora Aquifer 46 112BCRK Battle Creek Aquifer 46 112BDCN Bad Cheyenne 46 112BGSX Big Sioux Aquifer 46 112BLCK Brule Creek 46 112BRND Brandon Aquifer 46 112BVCK Beaver Creek Aquifer 46 112BWDL Bowdle Aquifer 46 112CCRK Cow Creek 46 112CHTU Choteau Aquifer 46 112CLKS Coteau-Lakes Aquifer 46 112CLTN Colton Aquifer 46 112COBB Cobb Aquifer 46 112COLK Crow Lake Aquifer 46 112COTU Coteau Aquifer 46 112CPCK Chapelle Creek 46 112CRCK Crow Creek Aquifer 46 112CRSC Corsica Aquifer 46 112DELM Delmont Aquifer 46 112DLTN Dolton 46 112DRCT Dry Choteau Aquifer 46 112EDEN Eden Aquifer 46 112ELM Elm Aquifer 46 112EMCK Elm Creek Aquifer 46 112ETHN Ethan Aquifer 46 112FICK Firesteel Creek Aquifer 46 112FLYD Floyd Aquifer 46 112FMCK Four Mile Creek Aquifer 46 112FRMN Fairmount Aquifer 46 112GARY Gary Aquifer 46 112GEDS Geddes Aquifer 46 112GENO Greenwood Aquifer 46 112GRGS Gray Goose 46 112GRND Grand Aquifer 46 112HBMX Hubonmix Aquifer 46 112HDWD Hidewood Aquifer 46 112HGMB Highmore Blunt 46 112HGMR Highmore Aquifer 46 112HLSV Hillsview 46 112HRBG Harrisburg 46 112HWRD Howard 46 112IRMD Intermediate 46 112JAVA Java Aquifer 46 112JMES James Aquifer 46 112JMESD James Aquifer, Deep 46 112JMESM James Aquifer, Middle 46 112JMMRL Lower James Missouri 46 112LGLK Long Lake Aquifer 46 112LKDK Lake Dakota Aquifer 46 112LNNX Lennox 46 112LRVL Lesterville 46 112MORU Moreau Gravels 46 112MRDY Marday Aquifer 46 112MSSR Missouri 46 112NHLS Newton Hills 46 112NORD North Andes Aquifer 46 112NSKC North Skunk Creek Aquifer 46 112OBJC Okobojo Creek 46 112ONAK Onaka 46 112ORTN Orton Gravels 46 112OTSH Outwash 46 112PCRK Pipestone Creek Aquifer 46 112PESE Pease Aquifer 46 112PKCV Parker Centerville 46 112PLSC Pleistocene Series 46 112PLTT Platte Aquifer 46 112PMCK Plum Creek Aquifer 46 112PRRC Prairie Coteau Aquifer 46 112PRRCL Prairie Coteau Aquifer 3 46 112PRRCM Prairie Coteau Aquifer 2 46 112PRRCU Prairie Coteau Aquifer 1 46 112RLND Rutland Aquifer 46 112RMON Ramona Aquifer 46 112RSLN Roslyn Aquifer 46 112RVLL Revillo 46 112SDLR Shindler 46 112SKKC Skunk Creek 46 112SLBY Selby Aquifer 46 112SLGR Slaughter Aquifer 46 112SPCK Spring Creek Aquifer 46 112SPRG Spring Aquifer 46 112SUCK Slip Up Creek Aquifer 46 112TDLC Tyndall-Scotland Aquifer 46 112TKRC Turkey Ridge Creek 46 112TKRG Turkey Ridge 46 112TNLS Twin Lakes Aquifer 46 112TOWR Tower Aquifer 46 112TULR Tulare Aquifer 46 112VBLN Veblen Aquifer 46 112VEFK Vermillion East Fork 46 112VLTRA Voltaire Aquifer 46 112VMLMU Upper Vermillion Missouri 46 112VRML Lower Vermillion-Missouri Aquifer 46 112VSPG Valley Springs Aquifer 46 112VWFK Vermillion West Fork 46 112WILM Wilmot 46 112WKND Wakonda Aquifer 46 112WLLK Wall Lake 46 112WMLK Wilmarth Lake Aquifer 46 112WNFK Whetstone North Fork 46 112WRRN Warren Aquifer 46 112WSFK Whetstone South Fork 46 112WSPG Wessington Springs Aquifer 46 112WTLK White Lake Aquifer 46 112WTSN Whetstone 46 120IBKH Igneous Rocks of Black Hills 46 120TRTR Tertiary System 46 121ASHL Ash Hollow Formation 46 121BJOU Bijou Formation 46 121OGLL Ogallala Formation 46 121PLCN Pliocene Series 46 121VLNN Valentine Formation 46 122ARKR Arikaree Formation 46 122HRSN Harrison Sandstone 46 122MLLT Mellette Formation 46 122MOCN Miocene Series 46 122MRCK Monroe Creek Formation 46 122RCKF Rockyford Ash Member of Sharps Formation 46 122RSBD Rosebud Formation 46 122SRPS Sharps Formation 46 123AHRN Ahearn Member of Chadron Formation 46 123BRUL Brule Formation of White River Group 46 123CRDN Chadron Formation 46 123CRZJ Crazy Johnson Member of Chadron Formation 46 123OLGC Oligocene Series 46 123PLSD Poleslide Member of Brule Formation 46 123PNPK Peanut Peak Member of Chadron Formation 46 123REE Ree Beds 46 123SCNC Scenic Member of Brule Formation 46 123SLMB Slim Buttes Formation 46 123WIRV White River Formation or Group 46 125CNBL Cannonball Member of Fort Union Formation 46 125FRUN Fort Union Formation 46 125LDLW Ludlow Member of Fort Union Formation 46 125PLCN Paleocene Series 46 125SCCP Scotch Cap Sandstone 46 125TGRV Tongue River Member of Fort Union Formation 46 200MSZC Mesozoic Erathem 46 210CRCS Cretaceous System 46 211ARDM Ardmore Bentonite Bed of Pierre Shale 46 211BEFC Belle Fourche Shale 46 211BLLD Bullhead Lithofacies of Iron Lightning Member of Fox Hills Formation 46 211BRIN Breien Member of Hell Creek Formation 46 211CDLL Codell Sandstone Member of Carlile Shale 46 211CLRD Colorado Group 46 211COLG Colgate Lithofacies of Iron Lightning Member of Fox Hills Formation 46 211CRCK Crow Creek Member of Pierre Shale 46 211CRCSU Upper Cretaceous Series 46 211CRLL Carlile Shale 46 211DGRY Degrey Member of Pierre Shale 46 211DKOT Dakota Sandstone or Formation 46 211EKBU Elk Butte Member of Pierre Shale 46 211FXHL Fox Hills Formation 46 211GMMN Gammon Ferruginous Member of Pierre Shale 46 211GRER Greenhorn Limestone 46 211GRGR Gregory Member of Pierre Shale 46 211GROT Groat Sandstone Bed of Gammon Ferruginous Member of Pierre Shale 46 211GRRS Graneros Shale 46 211HLCK Hell Creek Formation 46 211IBLF Isabel-Firesteel Coal Member of Hell Creek Formation 46 211IRLG Iron Lightning Member of the Fox Hills Formation 46 211MBDG Mobridge Member of Pierre Shale 46 211MMHL Monument Hill Bentonitic Member of Pierre Shale 46 211MNTN Montana Group 46 211MTTN Mitten Black Shale Member of Pierre Shale 46 211NBCD Aquifer In Niobrara Formation & Codell Sandstone Member Carlile Shale 46 211NBRR Niobrara Formation 46 211OMLK Orman Lake Limestone Member of Greenhorn Formation 46 211PIRR Pierre Shale 46 211PLCK Pool Creek Shale Member of Carlile Shale 46 211RDBD Red Bird Silty Member of Pierre Shale 46 211SGBK Sage Breaks Shale Member of Carlile Shale 46 211SNVL Stoneville Member of Fox Hills Sandstone 46 211SRKC Split Rock Creek 46 211SSPG Sharon Springs Member of Pierre Shale 46 211TBLK Timber Lake Member of the Fox Hills Formation 46 211TRLC Trail City Member of the Fox Hills Formation 46 211TRNR Turner Sandy Member of Carlile Shale 46 211VGCK Virgin Creek Member of Pierre Shale 46 211VRDR Verendrye Member of Pierre Shale 46 217CLSN Chilson Member of Lakota Formation 46 217CLSP Clay Spur Bentonite Bed of Mowry Shale 46 217CRCSL Lower Cretaceous Series 46 217D D Sand 46 217DNSN Dynneson Sandstone Member of Mowry Shale 46 217FLRV Fall River Formation 46 217FUSN Fuson Member of Lakota Formation 46 217INKR Inyan Kara Group 46 217J J Sand 46 217KYHL Keyhole Sandstone Member of Fall River Formation 46 217LKOT Lakota Formation 46 217MNST Minnewaste Limestone Member of Lakota Formation 46 217MWRY Mowry Shale 46 217NCSL Newcastle Sandstone 46 217SKCK Skull Creek Shale 46 220JRSC Jurassic System 46 221CSPGS Canyon Springs Sandstone Member of Sundance Formation 46 221HLTT Hulett Sandstone Member of Sundance Formation 46 221ILAK Lak Member of Sundance Formation 46 221JRSCU Upper Jurassic Series 46 221LAK Lak Member of Sundance Formation 46 221MRSN Morrison Formation 46 221RDTR Redwater Shale Member of Sundance Formation 46 221SKBV Stockade Beaver Shale Member of Sundance Formation 46 221SNDC Sundance Formation 46 221UKPP Unkpapa Sandstone Member of Morrison Formation 46 224GPSP Gypsum Spring Formation 46 224JRSCM Middle Jurassic Series 46 224PIPR Piper Formation 46 230PNSL Pine Salt Member of Spearfish Formation (Triassic-Permian) 46 230SPRF Spearfish Formation (Triassic-Permian) 46 300PLZC Paleozoic Erathem 46 310BMCK Broom Creek Member of Minnelusa Formation 46 310CASS Cassa Member of Minnelusa 46 310MNKT Minnekahta Limestone 46 310MNLS Minnelusa Formation (Permian andPennsylvanian) 46 310OLCN Owl Canyon Formation 46 310PRMN Permian System 46 317OPCH Opeche Shale 46 322WVMK Wendover-Meek Member of Minnelusa Formation 46 325HYDN Hayden Member of Minnelusa Formation 46 326RCLM Reclamation Member of Minnelusa Formation 46 326RNDP Roundtop Member of Minnelusa Formation 46 328FRBK Fairbank Member of Minnelusa Formation 46 330BKKN Bakken Formation (Mississippian and Devonian) 46 330EGED Englewood Formation (Mississippian and Devonian) 46 330MSSP Mississippian System 46 331BGSN Big Snowy Group 46 331CRLS Charles Formation 46 331KBBY Kibbey Sandstone 46 331MDSM Madison Group 46 331MDSN Madison Group (Upper and Lower Mississippian) 46 331MSNC Mission Canyon Limestone 46 331MSSPU Mississippian, Upper 46 337LDGP Lodgepole Limestone of Madison Group 46 337MSSPL Mississippian, Lower 46 337PHSP Pahasapa Limestone 46 340DVNN Devonian System 46 341BRDB Birdbear Formation 46 341DPRW Duperow Formation 46 341DVNNU Devonian, Upper 46 341JFRS Jefferson Group 46 341SRRV Souris River Formation 46 341TRFK Three Forks Shale 46 344ASRN Ashern Formation 46 344DVNNM Devonian, Middle 46 350IRLK Interlake Formation 46 360DDWD Deadwood Formation 46 360ODVC Ordovician System 46 361BGRN Bighorn Dolomite 46 361GNTN Gunton Member of Stony Mountain Formation 46 361ODVCU Ordovician, Upper 46 361PNNR Penitentiary Member of Stony Mountain Format 46 361RDRV Red River Formation 46 361SNMN Stony Mountain Formation 46 361STGN Stoughton Member of Stony Mountain Formation 46 361STNL Stonewall Formation 46 361WHTD Whitewood Dolomite 46 364ALDN Aladdin Sandstone Member of Winnipeg Formation 46 364ICBX Icebox Shale Member of Winnipeg Formation 46 364ODVCM Ordovician, Middle 46 364ROGK Roughlock Siltstone Member of Winnipeg Formation 46 364WGSL Winnipeg Shale of Winnipeg Formation 46 364WGSS Winnipeg Sandstone of Winnipeg Formation 46 364WNPG Winnipeg Formation 46 364WPGS Winnipeg Silt of Winnipeg Formation 46 371DDWD Deadwood Formation (Outcrop) 46 400BGTN Bugtown Formation 46 400CROW Crow Formation 46 400MAYO Mayo Formation 46 400MBGW Milbank Granite Wash 46 400MLBK Milbank Granite 46 400PCMB Precambrian Erathem 46 400SOUX Sioux Quartzite 46 400SXWS Sioux Quartzite Wash Aquifer 46 BASEMENT Basement 46 BEDROCK Bedrock 47 100ALVM Alluvium 47 100CLVM Colluvium 47 100CNZC Cenozoic Erathem 47 100FILL Fill 47 100RGLT Regolith 47 100RSDM Residuum 47 100SPRL Saprolite 47 110QRNR Quaternary System 47 111ALVM Holocene Alluvium 47 111HLCN Holocene Series 47 112LOSS Loess 47 112PLSC Pleistocene Series 47 112TRRC Terrace Deposits 47 120TRTR Tertiary System 47 12405MP 500-foot Sand (Memphis Aquifer) 47 12414MP 1400-foot Sand of Memphis Area 47 124CCKFJ Cockfield Through Jackson, Undivided 47 124CKMN Cook Mountain Formation 47 124CLBR Claiborne Group 47 124EOCN Eocene Series 47 124EOCNU Eocene Series, Upper 47 124FLID Flour Island Formation of Wilcox Group 47 124FRPL Fort Pillow Sand of Wilcox Group 47 124JCKS Jackson Group 47 124MMPS Memphis Sand 47 124ODBK Old Breastworks Formation 47 124SPRT Sparta Sand 47 124WLCXG Wilcox Group 47 125CLTN Clayton Formation 47 125MDWY Midway Group 47 125PLCN Paleocene Series 47 125PRCK Porters Creek Clay 47 200MSZC Mesozoic Erathem 47 210CRCS Cretaceous System 47 211CCRK Coon Creek Tongue of Ripley Formation 47 211COCK Coon Creek Formation 47 211COFF Coffee Sand 47 211CRCSU Upper Cretaceous Series 47 211DEMP Demopolis Formation 47 211EUTW Eutaw Formation 47 211MCNR McNairy Formation 47 211OLCK Owl Creek Formation 47 211RPLY Ripley Formation 47 211SRDS Sardis Formation 47 211TSCL Tuscaloosa Formation 47 224CCKFJ Cockfield-Jackson Formations 47 300PLZC Paleozoic Erathem 47 320PSLV Pennsylvanian System 47 324CRSM Cross Mountain Group 47 324GVGP Graves Gap Group 47 324IDBF Indian Bluff Group 47 324PSLVM Middle Pennsylvanian Series 47 324RDKM Redoak Mountain Group 47 324SLSN Slatestone Group 47 324VLMN Vowell Mountain Group 47 327BRML Burnt Mill Shale 47 327CBOM Crab Orchard Mountains Formation 47 327CKFK Crooked Fork Group 47 327CLFD Coalfield Sandstone 47 327CRVL Crossville Sandstone 47 327DRTN Dorton Shale 47 327FNRS Fentress Formation 47 327GLMR Glenmary Shale 47 327GZRD Gizzard Formation 47 327NWTN Newton Sandstone 47 327PSLVL Lower Pennsylvanian Series 47 327RCKC Rockcastle Conglomerate 47 327RCNM Raccoon Mountain Member of Gizzard Formation 47 327SEWN Sewanee Conglomerate 47 327SGLP Signal Point Shale 47 327VDVR Vandever Member of Lee Formation 47 327WRBG Wartburg Sandstone 47 327WRNP Warren Point Sandstone Member of Lee Formation 47 327WTLL Whitwell Shale 47 330CTNG Chattanooga Shale 47 330GRGR Grainger Formation 47 330MSSP Mississippian System 47 330NWMN Newman Limestone 47 331BNGR Bangor Limestone 47 331HRSL Hartselle Sandstone 47 331MNGL Monteagle Limestone 47 331MSSPU Mississippian, Upper 47 331PNNG Pennington Formation 47 333SGVV Ste. Genevieve Limestone 47 333STLS St. Louis Limestone 47 333WRSW Warsaw Formation 47 337FRPN Fort Payne Chert/formation 47 337MSSPL Mississippian, Lower 47 337MURY Maury Formation 47 340DVNN Devonian System 47 344CMDN Camden Chert 47 344DVNNM Devonian, Middle 47 344PGRM Pegram Formation 47 347DVNNL Devonian, Lower 47 347FLGP Flat Gap Limestone 47 347HRMN Harriman Formation 47 347ROSS Ross Formation 47 350SLRN Silurian System 47 354BROP Brownsport Group 47 354CLNC Clinch Sandstone 47 354DCTR Decatur Limestone 47 354RCKD Rockwood Formation 47 354SLRNM Silurian, Middle 47 354WYNE Wayne Group 47 357BFLD Brassfield Limestone 47 357SLRNL Silurian, Lower 47 360ODVC Ordovician System 47 361CKMG Chickamauga Limestone 47 361EDEN Eden Group 47 361JUNT Juniata Formation 47 361LPIC Leipers-Inman-Catheys Formations Undifferentiated 47 361MRBG Martinsburg Shale 47 361MSVL Maysville Group 47 361ODVCU Ordovician, Upper 47 361RCMD Richmond Group 47 361SQTC Sequatchie Formation 47 364ATNS Athens Shale 47 364BAYS Bays Formation 47 364BGBC Bigby and Cannon Limestones 47 364CRRS Carters Limestone 47 364HLSN Holston Formation 47 364HRMG Hermitage Formation 47 364LBNN Lebanon Limestone 47 364LNOR Lenoir Limestone 47 364MRFB Murfreesboro Limestone 47 364NSVL Nashville Group 47 364ODVCM Ordovician, Middle 47 364OTTS Ottosee Shale 47 364PIRC Pierce Limestone 47 364RDLY Ridley Limestone 47 364SRVR Stones River Group 47 364SVIR Sevier Shale 47 367CPPC Chepultepec Dolomite 47 367JSBR Jonesboro Limestone 47 367KGPR Kingsport Formation 47 367KNOX Knox Dolomite 47 367LOGV Longview Dolomite 47 367MSCT Mascot Dolomite 47 367NEWLF Newala Formation 47 367ODVCL Ordovician, Lower 47 367WLCK Wells Creek Formation 47 370CMBR Cambrian System 47 371CMBRU Cambrian, Upper 47 371CONG Conococheague Limestone 47 371COSG Conasauga Group 47 371CPRG Copper Ridge Dolomite 47 371MDVL Maynardville Limestone 47 371NCCK Nolichucky Shale 47 374CMBRM Cambrian, Middle 47 374HNKR Honaker Dolomite 47 374MRVL Maryville Limestone 47 374PPKV Pumpkin Valley Shale 47 374RGVL Rogersville Shale 47 374RLDG Rutledge Limestone 47 377CHLH Chilhowee Group 47 377CMBRL Lower Cambrian Series 47 377ERWN Erwin Formation 47 377HESS Hesse Sandstone 47 377HMPN Hampton Shale or Formation 47 377MRRY Murray Shale 47 377NCLS Nichols Shale 47 377NEBO Nebo Sandstone 47 377ROME Rome Formation 47 377SHDY Shady Dolomite 47 377UNCO Unicoi Formation 47 400BECH Beech Granite 47 400BKVL Bakersville Gabbro 47 400CDES Cades Sandstone 47 400CRBR Cranberry Granite 47 400GSMK Great Smoky Group 47 400IVIG Intrusive Rocks 47 400MRGR Mount Rogers Volcanic Group 47 400OCOE Ocoee Series 47 400PCMB Precambrian Erathem 47 400RCBT Rich Butt Sandstone 47 400ROAN Roan Gneiss 47 400SBRD Snowbird Group 47 400SDCK Sandsuck Formation 47 400WDCK Walden Creek Group 47 BASEMENT Basement 47 BEDROCK Bedrock 48 100ALVM Alluvium 48 100AVSR Alluvium and Santa Rosa Sandstone 48 100CNZC Cenozoic Erathem 48 100PCOS Pecosian Series 48 110ABDC Alluvial Channel and Plain Deposits, Ogallala Formation, and Dockum Gr 48 110ACOD Alluvial, Channel and Plain Deposits, Ogallala Formation and Dockum Gr 48 110ACPA Alluvial Channel and Plain Deposits, and Artesia Group 48 110ACPD Alluvial Channel and Plain Deposits, and Dockum Group 48 110ACPO Alluvial Channel and Plain Deposits, and Ochoa Series 48 110ACSR Alluvium, Cretaceous Rocks and Santa Rosa Sandstone 48 110ADCB Alluvial Terrace and Channel Deposits, Dog Creek Shale, Blaine Gypsum 48 110AFTA Alluvium, Fluvial Terrace Deposits, and Artesia Group 48 110AFTP Alluvium, Fluvial Terrace Deposits, and Pease River Group 48 110AHTP Alluvium and High Terrace Plain Deposits 48 110AHTW Alluvium, High Terrace Deposits, and Whitehorse Group 48 110ALRS Allurosa Aquifer 48 110ALTC Alluvium, Low Terrace and Channel Fill Deposits 48 110ALTD Alluvium, Low Terrace and Channel Fill Deposits, and Dune Sand 48 110ALTO Alluvium, Low Terrace and Channel Fill Deposits, and Ogallala Formatio 48 110ALTW Alluvium, Low Terrace and Channel Fill Deposits, and Whitehorse Group 48 110ALVM Quaternary Alluvium 48 110ALVP Alluvial Plain Deposits 48 110ALWX Alluvium, Leona Formation, and Wilcox Group 48 110ASCF Alluvium, Terrace Deposits and Seymour Formation, and Clear Creek Grou 48 110ASCR Alluvium, Cretaceous Rocks, and Santa Rosa Sandstone 48 110ASRR Alluvium, Cretaceous Rocks, Santa Rosa Sandstone, and Rustler Formatio 48 110ASSA Alluvium, Terrace Deposits and Seymour Formation, and San Angelo Ss. 48 110ATCF Alluvial Terrace and Channel Deposits, and Flowerpot Shale 48 110ATCO Alluvial Terrace and Channel Deposits, and Ogallala Formation 48 110ATCW Alluvial Terrace and Channel Deposits, and Whitehorse Group 48 110ATSB Alluvium, Terrace Deposits and Seymour Formation, and Blaine Formation 48 110ATSF Alluvium, Terrace Deposits and Seymour Formation, and Flowerpot Shale 48 110AVBT Alluvium, Beach Sand and Terrace Deposits 48 110AVCC Alluvium and Cretaceous Rocks 48 110AVCF Alluvium and Clear Fork Group 48 110AVCM Alluvium and Cook Mountain Formation 48 110AVCP Alluvial Channel and Plain Deposits 48 110AVEL Alluvial, Eolian, and Littoral Deposits 48 110AVEV Alluvium and Evangeline Aquifer 48 110AVFP Alluvium, Flood Plain 48 110AVFV Alluvium and Fluviatile Terrace Deposits 48 110AVJK Alluvium and Jackson Group 48 110AVLA Alluvium, Leona Formation, and Austin Chalk 48 110AVMA Alluvium and Artesia Group 48 110AVMC Alluvium and Chinle Formation Equivalent 48 110AVME Alluvium and Edwards and Associated Limestones 48 110AVML Alluvium and Leona Formation 48 110AVMT Alluvium and Triassic System 48 110AVMW Alluvium and Wichita Group 48 110AVOG Alluvium and Ogallala Formation 48 110AVOV Alluvium and Oakville Sandstone 48 110AVPR Alluvium and Pease River Group 48 110AVPW Alluvial Plain Deposits and Whitehorse Group 48 110AVPX Alluvium and Paluxy Sand 48 110AVSR Alluvium and Santa Rosa Sandstone 48 110AVTC Alluvial Terrace and Channel Deposits 48 110AVTR Alluvium and Trinity Sand 48 110AVTS Alluvium, Terrace Deposits, and Seymour Formation 48 110AVYG Alluvium and Yegua Formation 48 110BIBC Barrier Island and Beach Deposits 48 110BILD Barrier Island Deposits 48 110DOGL Dune Sand and Ogallala Formation 48 110DUNE Dune Sand 48 110GRVL Gravel 48 110KKRN Kokernot Formation 48 110MNNS Monahans Formation 48 110QODV Quaternary-Ordovician Systems 48 110QRNR Quaternary System 48 110STEP South Texas Eolian Plain Deposits 48 110TBLC Terra Blanca Formation 48 110TRRC Terrace Deposits 48 111ABZR Alluvium, Brazos River 48 111AGHC Alluvial Deposits, Glen Rose Limestone, Hensell and Cow Creek Members 48 111ALVM Holocene Alluvium 48 111AVBD Alluvium, Beach and Dune Sand 48 111AVCR Alluvium, Colorado River 48 111AVFP Alluvium, Flood Plain 48 111AVMT Alluvium and Terrace Deposits 48 111EOLN Eolian Deposits 48 111FPTC Flood-Plain and Terrace Deposits 48 111HLCN Holocene Series 48 111HPPA Holocene, Pleistocene, and Pliocene? Alluvial Deposits 48 111IGLD Ingleside Formation 48 111NCRV Nueces River Alluvium 48 111PCRV Pecos River Alluvium 48 111RDRV Red River Alluvium 48 111RGRD Rio Grande Alluvium 48 111STGV Stream and Terrace Gravel 48 111TRRV Trinity River Alluvium 48 112ALLM Alta Loma Sand 48 112BMLG Beaumont Clay, Lissie Formation and Goliad Sand 48 112BMLS Beaumont Clay and Lissie Formation 48 112BMNT Beaumont Clay 48 112BNTL Bentley Formation 48 112CEVG Chicot and Evangeline Aquifers 48 112CHCT Chicot Aquifer 48 112CHCTL Chicot Aquifer, Lower 48 112CHCTM Chicot Aquifer, Middle 48 112CHCTU Chicot Aquifer, Upper 48 112CLEV Chicot Aquifer and Lower Unit of Evangeline Aquifer 48 112DVLL Deweyville Formation 48 112GDLG Goliad and Younger Rocks, and Lagarto Clay 48 112GLFC Gulf Coast Aquifer 48 112GOLD Goliad and Younger Rocks, Undifferentiated 48 112HCBL Hueco Bolson Deposits 48 112LACC Leona Formation and Anacacho Limestone 48 112LBLG Leona Formation and Bullwagon Dolomite 48 112LEDD Leona Formation and Edwards and Associated Limestones 48 112LEGF Leona Formation and Eagle Ford Shale 48 112LEON Leona Formation 48 112LFSV Linn-Faysville Aquifer 48 112LGLD Lissie Formation and Goliad Sand 48 112LGLR Leona Formation and Glen Rose Limestone 48 112LISS Lissie Formation 48 112LMBL La Mesa Bolson Deposits 48 112LNAS Leona Formation and Austin Chalk 48 112LNBD Leona Formation and Buda Limestone 48 112LNBL Leona Formation and Blaine Gypsum 48 112LNCZ Leona Formation and Choza Formation 48 112LNID Leona Formation and Indio Formation 48 112LNTR Leona Formation and Trinity Group 48 112LRGD Lower Rio Grande Aquifer 48 112LSRP Leona Formation and Serpentine 48 112LWCX Leona Formation and Wilcox Formation 48 112LWGD Lissie Formation, Willis Sand and Goliad Sand 48 112MCSB Mercedes-Sebastian Aquifer 48 112MSBL Mesilla Bolson Aquifer 48 112MTGM Montgomery Formation 48 112PCPC Pleistocene-Pliocene Series 48 112PLSC Pleistocene Series 48 112PRIR Prairie Formation 48 112SACZ San Angelo Sandstone and Choza Formation 48 112SANF Santa Fe Formation 48 112SCFK Seymour Formation and Clear Fork Group 48 112SYMR Seymour Formation 48 112THOK Tahoka Clay 48 112TRCL Terrace Gravel, Including Leona Formation 48 112TRRC Terrace Deposits 48 112TULE Tule Formation 48 112WLLN Williana Formation 48 112WLLS Willis Sand 48 120BLSN Bolson Deposits 48 120BSLT Basalt 48 120CSPG Cottonwood Spring Basalt 48 120DUFF Duff Formation 48 120GDNG Goodnight Formation 48 120IGNS Igneous Rocks 48 120IRSV Intrusive Rocks 48 120MCCC Mccutcheon Volcanic Series 48 120MCLM Mitchell Mesa Rhyolite 48 120PRTT Pruett Formation 48 120PTHL Potato Hill Andesite 48 120SNDS Sandstone 48 120SPCN Sheep Canyon Basalt 48 120SRPN Serpentine 48 120TRTR Tertiary System 48 120VLCC Volcanic Rocks 48 121BLCC Blanco Canyon Beds 48 121BLNC Blanco Formation 48 121BOCK Blounts Creek Member of Fleming Formation 48 121CLRD Clarendon Beds 48 121COTS Coetas Formation 48 121EVBV Evangeline Aquifer and Burkeville Aquiclude 48 121EVGL Evangeline Aquifer 48 121EVJP Evangeline and Jasper Aquifers 48 121EVJPU Evangeline Aquifer and Upper Unit of Jasper Aquifer 48 121FOLY Foley Formation 48 121GDLG Goliad Sand and Lagarto Clay 48 121GDYG Goliad and Younger Rocks, Undifferentiated 48 121GOLD Goliad Sand 48 121HVPP Heavily-Pumped Layer 48 121LAPR Lapara Sand Member of the Goliad Sand 48 121LBHI Labahia Member of the Goliad Sand 48 121OGDO Ogallala Formation and Dockum Group 48 121OGLL Ogallala Formation 48 121OGLW Ogallala Formation and Whitehorse Group 48 121PLCN Pliocene Series 48 121PLDR Palo Duro Beds 48 121UVDA Uvalde Gravel and Austin Chalk 48 121UVLD Uvalde Gravel 48 122BKVL Burkeville Aquiclude 48 122CHUS Chusa Tuff Member of Catahoula Formation 48 122CJCK Catahoula Tuff and Jackson Group 48 122CRCK Castor Creek Member of Fleming Formation 48 122CRNB Carnahan Bayou Member of Fleming Formation 48 122CTHL Catahoula Formation 48 122DGHL Dough Hills Member of Fleming Formation 48 122FANT Fant Tuff Member of Catahoula Formation 48 122FBKV Fleming Formation and Burkeville Aquiclude 48 122FLMG Fleming Formation 48 122JBKV Jasper Aquifer and Burkeville Aquiclude 48 122JPCL Jasper Aquifer and Catahoula Sandstone 48 122JPJK Jasper Aquifer and Jackson Group 48 122JSPR Jasper Aquifer 48 122JSPRL Jasper Aquifer, Lower Unit 48 122JSPRU Jasper Aquifer, Upper Unit 48 122LENA Lena Member of Fleming Formation 48 122LGRT Lagarto Clay 48 122LOKV Lagarto Clay and Oakville Sandstone 48 122LOVC Lagarto Clay, Oakville Sandstone, and Catahoula Formation 48 122MOCN Miocene Series 48 122OKVC Oakville Sandstone and Catahoula Tuff 48 122OKVL Oakville Sandstone 48 122OVCJ Oakville Sandstone, Catahoula Tuff and Jackson Group 48 122RWLS Rawls Basalt 48 122SLDD Soledad Volcanic Conglomerate Member of Catahoula Formation 48 122WMCK Williamson Creek Member of Fleming Formation 48 123ANHC Anahuac Formation 48 123FRIO Frio Clay 48 123OLGC Oligocene Series 48 123TSCL Tascotal Formation 48 123VKBG Vicksburg Group 48 124ARP Arp Sand Member of Reklaw Formation 48 124BGDF Bigford Formation of Claiborne Group 48 124BGFD Bigford Formation Claiborne Group 48 124CCKF Cockfield Formation of Claiborne Group 48 124CDLL Cadell Formation 48 124CKMN Cook Mountain Formation 48 124CKMS Cook Mountain Formation and Sparta Sand 48 124CLBR Claiborne Group 48 124CLLM Callaham Sand 48 124CPRS Cypress Aquifer 48 124CRRZ Carrizo Sand 48 124CRSN Crosson Trachyte 48 124CRVR Cane River Formation 48 124CZRK Carrizo Sand and Reklaw Formation 48 124CZSB Carrizo Sand and Simsboro Sand Member of Rockdale Formation 48 124CZSP Carrizo Sand and Sparta Sand 48 124CZWX Carrizo Sand and Wilcox Group, Undifferentiated 48 124CZWXA Carrizo-Wilcox Aquifer 48 124DBLL Diboll Member of Jackson Formation 48 124DLRT Dillworth Sand 48 124DUBS Dubose Sands and Clays 48 124ELPC El Pico Clay 48 124EOCN Eocene Series 48 124FSNG Fashing Clay 48 124GPSH Glen Rose (Lower), Pearsall (Hensell, Cow Creek Mbrs), Sligo, Hosston 48 124IDEC Indio Formation and Escondido Formation 48 124INDO Indio Formation 48 124JCKS Jackson Group 48 124JKYG Jackson Group and Yegua Formation 48 124LRDO Laredo Formation 48 124MCEL Mc Elroy Formation 48 124MNNG Manning Formation of Jackson Group 48 124MRQZ Marquez Shale Member of Reklaw Formation 48 124NWBY Newby Glauconitic Sand Member of Reklaw Formation 48 124OLMS Olmos Sand 48 124OMEN Omen Member of Mount Selman Formation 48 124PBGF Post-Bigford Beds of Mount Selman Formation 48 124QCCW Queen City Sand, Carrizo Sand and Wilcox Group 48 124QCCZ Queen City Sand and Carrizo Sand 48 124QCSP Queen City Sand and Sparta Sand 48 124QNCT Queen City Sand of Claiborne Group 48 124RCKD Rockdale Formation 48 124RKCZ Reklaw Formation and Carrizo Sand 48 124RKLW Reklaw Formation of Claiborne Group 48 124SBNN Sabinetown Formation 48 124SGUN Seguin Formation 48 124SMBR Simsboro Sand Member of Rockdale Formation 48 124SNSC Stone Switch Sand 48 124SPLR Spiller Sand Member of Cook Mountain Formation 48 124SPQC Sparta Sand and Queen City Sand 48 124SPRT Sparta Sand 48 124SPSP Sparta Sand and Spiller Sand Member of Cook Mountain Formation 48 124TRLL Therrill Clay Member of Weches Formation 48 124TYLR Tyler Greensand Member of Sparta Sand 48 124WCHS Weches Formation of Claiborne Group 48 124WLBR Wellborn Sandstone 48 124WLCXG Wilcox Group 48 124WTST Whitsett Formation 48 124WXSB Wilcox Group and Simsboro Sand Member of Rockdale Formation 48 124YCMS Yegua Formation, Cook Mountain Formation and Sparta Sand 48 124YEGU Yegua Formation 48 124YGJK Yegua Formation and Jackson Group 48 124YGSP Yegua Formation and Sparta Sand 48 125KNCD Kincaid Formation 48 125KRNS Kerens Member of Wills Point Formation 48 125LTTG Littig Glauconitic Member of Kincaid Formation 48 125MDWY Midway Group 48 125MEXI Mexia Member of Wills Point Formation 48 125PLCN Paleocene Series 48 125PSGH Pisgah Member of Kincaid Formation 48 125THCN Tehuacana Member of Kincaid Formation 48 125WLSP Wills Point Formation 48 200MSZC Mesozoic Erathem 48 210CCSR Cretaceous Rocks and Santa Rosa Sandstone 48 210CRCS Cretaceous System 48 211ACCE Anacacho Limestone and Escondido Formation 48 211AEDD Austin Chalk and Edwards and Associated Limestones 48 211AEFB Austin Chalk, Eagle Ford Shale and Buda Limestone 48 211AGUJ Aguja Formation 48 211ANCC Anacacho Limestone 48 211ANNN Annona Chalk 48 211ASTN Austin Chalk 48 211BEGF Buda Limestone and Eagle Ford Shale 48 211BLSM Blossom Sand 48 211BNHM Bonham Marl 48 211BQLS Boquillas Formation 48 211BUDA Buda Limestone 48 211CHSS Chisos Volcanics 48 211CRCSU Upper Cretaceous Series 48 211CRSC Corsicana Marl 48 211DKOT Dakota Sandstone or Formation 48 211DLRO Del Rio Clay 48 211DRNG Durango Sand Member of Taylor Marl 48 211DXTR Dexter Member of Woodbine Sand 48 211ECDD Escondido Formation 48 211ECTR Ector Tongue of Austin Chalk 48 211EFSP Eagle Ford Shale and Serpentine 48 211EGFA Eagle Ford Shale and Austin Chalk 48 211EGFD Eagle Ford Shale 48 211ELSS Euless Member of Woodbine Sand 48 211GOBR Gober Tongue of Austin Chalk 48 211GRRS Graneros Shale 48 211GRSN Grayson Shale 48 211KEMP Kemp Clay 48 211LSVL Lewisville Member of Woodbine Sand 48 211NCTC Nacatoch Sand 48 211NLDV Neylandville Marl 48 211NVRR Navarro Group 48 211PCGP Pecan Gap Chalk Member of Taylor Marl 48 211PPPR Pepper Shale 48 211RDBC Red Branch Member of Woodbine Sand 48 211SCRL San Carlos Formation 48 211SMGL San Miguel Formation 48 211TMPL Templeton Member of Woodbine Sand 48 211TRLG Terlingua Clay 48 211TRNL Tornillo Clay 48 211TYLR Taylor Marl 48 211UPSN Upson Clay 48 211VIEJ Vieja Series 48 211WLFC Wolfe City Sand Member of Taylor Marl 48 212BRNS Brownstown Marl 48 212GLFN Gulfian Series 48 212OLMS Olmos Formation 48 212WDBT Woodbine Sand and Trinity Group 48 212WODB Woodbine Sand 48 217CRCSL Lower Cretaceous Series 48 217HSTN Hosston Formation 48 217PRGR Purgatoire Formation 48 217SLGO Sligo Formation 48 218ALER Antlers Sand 48 218CCRK Cow Creek Limestone 48 218CMNC Comanchean Series 48 218CMPK Comanche Peak Limestone 48 218COX Cox Sandstone 48 218DLCM Del Carmen Limestone 48 218DNTN Denton Clay 48 218DUKC Duck Creek Limestone 48 218DVRV Devils River Limestone 48 218EBEF Edwards and Associated Limestones, Buda Limestone, and Eagle Ford Shal 48 218EDDH Edwards and Associated Limestones, and Hosston Formation 48 218EDDT Edwards and Associated Limestones, and Trinity Group 48 218EDGR Edwards and Associated Limestones, and Glen Rose Limestone 48 218EDGRU Edwards and Associated Limestones, and Upper Member of Glen Rose Ls. 48 218EDPM Edwards and Associated Limestones, and Permian System 48 218EDRD Edwards Limestone 48 218EDRDA Edwards and Associated Limestones 48 218EEGF Edwards and Associated Limestones, and Eagle Ford Shale 48 218FKBG Fredericksburg Group 48 218FKBT Fredericksburg and Trinity Groups 48 218FKBW Limestones of Fredericksburg and Washita Groups 48 218FNLY Finlay Limestone 48 218FRWR Fort Worth Limestone 48 218FWGR Limestone of Fredericksburg and Washita Groups and Glen Rose Ls (Upper 48 218GDLD Goodland Limestone 48 218GLRH Glen Rose Limestone and Hensell Member of Pearsall Foramtion 48 218GLRP Glen Rose Limestone and Pearsall Formation 48 218GLRS Glen Rose Limestone 48 218GLRSL Glen Rose Limestone, Lower Member 48 218GLRSU Glen Rose Limestone, Upper Member 48 218GPSH Glen Rose (Lower), Pearsall (Hensell, Cow Creek Mbrs), Sligo & Hosston 48 218GRGN Georgetown Limestone 48 218GRHC Glen Rose Ls. and Hensell Sh and Cow Creek Ls Members of Pearsall Fm 48 218GRHCU Glen Rose Ls, Upper Mbr, Hensell Mbr and Cow Creek Ls Mbr of Pearsall 48 218GRHCV Glen Rose Ls, and Upper, Hensell Sh, and Cow Creek Ls Mbrs of Pearsall 48 218GRLH Glen Rose Ls, and Lower and Hensell Sh Members of Pearsall Formation 48 218GRUH Glen Rose Ls, and Upper and Hensell Shale Members of Pearsall Formatio 48 218HCSH Hensell and Cow Creek Mbrs of Pearsall Fm, and Sligo and Hosston Fms 48 218HMMT Hammett Shale 48 218HNSL Hensell Sand Member of Travis Peak Formation 48 218KMCH Kiamichi Formation 48 218MCKG Mc Knight Beds 48 218MNSR Main Street Limestone 48 218MXON Maxon Sandstone 48 218PILD Pine Island Shale 48 218PLXY Paluxy Sand 48 218PRSL Pearsall Formation 48 218PSGH Pearsall, Sligo, and Hosston Formations 48 218PTPH Paluxy Sand, Travis Peak and Hosston Formations 48 218PWPW Pawpaw Formation 48 218PXGR Paluxy Sand and Glen Rose Limestone 48 218SCMR Sycamore Sand Member of Travis Peak Formation 48 218SNEL Santa Elena Limestone 48 218TGHC Trinity Sand, Graham Formation and Home Creek Limestone 48 218THCK Trinity Sand and Home Creek Limestone 48 218TNMS Twin Mountains Formation 48 218TPLX Trinity and Paluxy Sand 48 218TPPX Travis Peak Formation and Paluxy Sand 48 218TRBL Trinity Group and Blaine Gypsum 48 218TRCL Trinity Sand and Chinle Formation Equivalent 48 218TRGM Trinity Sand and Graham Formation 48 218TRNT Trinity Group 48 218TVPH Travis Peak and Hosston Formations 48 218TVPK Travis Peak Formation 48 218WENO Weno Limestone 48 218WLNT Walnut Clay 48 218WSHT Washita Group 48 219CHUL Coahuilan Series 48 219SLGH Sligo and Hosston Formations 48 220JRSC Jurassic System 48 221JRSCU Upper Jurassic Series 48 221MLON Malone Formation 48 230BSST Bissett Conglomerate 48 230CAPS Camp Springs Conglomerate 48 230CHNLE Chinle Formation Equivalent 48 230DCKO Dockum Group and Ochoa Series 48 230PRCC Pierce Canyon Redbeds 48 230TRJL Trujillo Formation 48 230TRSC Triassic System 48 231CHNL Chinle Formation 48 231CHNLE Chinle Formation Equivalent 48 231DCKM Dockum Group 48 231SNRS Santa Rosa Sandstone 48 231SRSA Santa Rosa Sandstone and San Andres Limestone 48 231TECV Tecovas Formation 48 300PLZC Paleozoic Erathem 48 300PLZCL Paleozoic Erathem, Lower 48 300PLZCU Paleozoic Erathem, Upper 48 300PVMD Pennsylvanian-Mississippian-Devonian Systems 48 310GLRT Glorieta Sandstone 48 310PRMN Permian System 48 310QRMW Quartermaster Formation and Whitehorse Group 48 310QRRM Quartermaster Formation 48 311ALBS Alibates Dolomite 48 312CASL Castile Gypsum 48 312DYLK Dewey Lake Redbeds 48 312OCAR Ochoan Series and Artesia Group 48 312OCHO Ochoan Series 48 312RSLR Rustler Formation 48 312SLDO Salado Formation 48 312TSSY Tessey Limestone 48 313ALBS Alibates Dolomite Lentil of Quartermaster Formation 48 313ALTD Altuda Formation 48 313ARTS Artesia Group 48 313BLCN Bell Canyon Formation 48 313BLIN Blaine Gypsum 48 313BRSC Brushy Canyon Formation 48 313BSAG Blaine Gypsum and San Angelo Sandstone 48 313CLBD Carlsbad Limestone 48 313CLDR Childress Dolomite Member of Grayburg Formation 48 313CPTN Capitan Limestone 48 313CRCN Cherry Canyon Formation 48 313CRCX Capitan Reef Complex and Associated Limestones 48 313DBLM Double Mountain Group 48 313DCBF Dog Creek Shale, Blaine Gypsum and Flowerpot Shale 48 313DELM Delaware Mountain Formation or Group 48 313DGCK Dog Creek Shale 48 313DOCB Dog Creek Shale and Blaine Gypsum 48 313DOZR Dozier Sandstone Member of Rush Springs Formation 48 313FLRP Flowerpot Shale 48 313FPSA Flowerpot Shale and San Angelo Sandstone 48 313GABG Grayburg Formation 48 313GDLP Guadalupian Series 48 313GLLM Gilliam Limestone 48 313GLLMT Gilliam Thin-Bedded Member of Capitan Limestone 48 313GTSP Goat Seep Limestone 48 313GTWY Getaway Limestone Member of Cherry Canyon Formation 48 313HGLR Hegler Limestone Member of Cherry Canyon Formation 48 313LAMR Lamar Limestone Member of Bell Canyon Formation 48 313MCMB Mc Combs Limestone Member of Bell Canyon 48 313MNZN Manzanita Limestone Member of Cherry Canyon Formation 48 313PNRY Pinery Limestone Member of Cherry Canyon Formation 48 313QUEN Queen Formation 48 313RDER Rader Limestone Member of Cherry Canyon Formation 48 313SADR San Andres Limestone 48 313SDLR Saddlehorse Gypsum Lintel of Quartermaster Formation 48 313SVRV Seven Rivers Formation 48 313SWLS South Wells Limestone Member of Cherry Canyon Formation 48 313TNSL Tansill Formation 48 313VDRO Vidrio Limestone Member of Word Formation 48 313WDCB Whitehorse, Dog Creek and Blaine Formations 48 313WORD Word Formation 48 313YTES Yates Formation 48 318ACME Acme Dolomite 48 318ADML Admiral Formation 48 318ARRY Arroyo Formation 48 318BLGN Bullwagon Dolomite Member of Vale Formation 48 318BLPL Belle Plains Formation 48 318BSPG Bone Spring Limestone 48 318BSVP Bone Spring and Victoria Peak Limestones 48 318CDLM Cathedral Mountain Formation 48 318CHOZ Choza Formation 48 318CLFK Clear Fork Group 48 318CLGR Collingsworth Gypsum Member of Blaine Formation 48 318CLYD Clyde Formation 48 318CTFF Cutoff Shaly Member of Bone Spring Limestone 48 318HESS Hess Limestone Member of Leonard Formation 48 318LDRS Lueders Limestone 48 318LNRD Leonardian Series 48 318MRKL Merkel Dolomite Member of Choza Formation 48 318PRVR Pease River Group 48 318RINY Rainey Limestone Member of Arroyo Formation 48 318SAGL San Angelo Sandstone 48 318SDPP Standpipe Limestone Member of Arroy Formation 48 318VALE Vale Formation 48 318VCPK Victorio Peak Limestone 48 318WCCC Wichita and Cisco Groups 48 318WCHT Wichita Formation or Group 48 319CMJC Coleman Junction Limestone Member of Putnam Formation 48 319HUCO Hueco Limestone 48 319MORN Moran Formation 48 319PTNM Putnam Formation 48 319PUBL Pueblo Formation 48 319WOFP Wolfcamp Formation 48 320BEND Bend Group 48 320DMPL Dimple Limestone 48 320MBLF Marble Falls Limestone 48 320PSLV Pennsylvanian System 48 320SMCK Smithwick Shale 48 321CCRP Colony Creek Shale, Ranger Limestone and Placid Shale 48 321CLCK Colony Creek Shale 48 321CNYN Canyon Group 48 321CSCO Cisco Group 48 321GPNK Gaptank Formation 48 321GRFD Grayford Formation 48 321GRHM Graham Formation 48 321HMCK Home Creek Limestone 48 321HPVL Harpersville Formation 48 321PLCD Placid Shale 48 321PLPN Palo Pinto Limestone 48 321PSDN Posideon Shale 48 321PSLVU Upper Pennsylvanian Series 48 321PWWM Placid Shale, Winchell Limestone, and Wolf Mountain Shale 48 321RNGR Ranger Limestone 48 321TFGM Thrifty and Graham Formations 48 321TRFT Thrifty Formation 48 321WFMP Wolf Mountain Shale and Posideon Shale 48 321WLFM Wolf Mountain Shale 48 321WMPP Wolf Mountain Shale, Posideon Shale, and Palo Pinto Limestone 48 321WNCL Winchell Limestone 48 324BZRVL Brazos River Conglomerate Member, Lower Part of Garner Formation 48 324BZRVU Brazos River Conglomerate Member, Upper Part of Garner Formation 48 324ESMN East Mountain Shale Member of Mineral Wells Formation 48 324GRNR Garner Formation 48 324LKPN Lake Pinto Sandstone Member of Mineral Wells Formation 48 324MLWL Mineral Wells Formation 48 324PSLVM Middle Pennsylvanian Series 48 324STRN Strawn Group 48 327HMND Haymond Formation 48 327PSLVL Lower Pennsylvanian Series 48 327TSNS Tesnus Formation 48 330BRNT Barnett Shale 48 330CPPL Chappel Formation 48 330HLMS Helms Formation 48 330MSSP Mississippian System 48 340CBLS Caballos Novaculite 48 340DVNN Devonian System 48 350SLRN Silurian System 48 354FSLM Fusselman Dolomite 48 360ODVC Ordovician System 48 361BRNM Burnam Limestone 48 361MONT Montoya Limestone 48 361MRVL Maravillas Chert 48 361ODVCU Ordovician, Upper 48 364FRPM Fort Pena Formation and Marathon Limestone 48 364FRPN Fort Pena Formation 48 364ODVCM Ordovician, Middle 48 364WDHL Woods Hollow Shale 48 367ALST Alstate Shale 48 367EBPH Ellenburger Group and Post-Hickory Sandstone Cambrian Rocks 48 367EBSS Ellenburger Group and San Saba Aquifer 48 367ELBG Ellenburger Group 48 367ELPS El Paso Limestone 48 367GRMN Gorman Formation 48 367HNCT Honeycut Formation 48 367MRTN Marathon Limestone 48 367ODVCL Ordovician, Lower 48 367SDBC Staendebach Member of Tanyard Formation 48 367TDGL Threadgill Member of Tanyard Formation 48 367TNRD Tanyard Formation 48 370CMBR Cambrian System 48 371BLSS Bliss Sandstone 48 371CMBRU Cambrian, Upper 48 371CPMN Cap Mountain Limestone Member of Riley Formation 48 371DGFL Dagger Flat Sandstone 48 371GRNT Granite Wash 48 371HCKR Hickory Sandstone 48 371LNMN Lion Mountain Sandstone 48 371MGCK Morgan Creek Limestone Member of Wilberns Formation 48 371PHCK Post-Hickory Sandstone Rocks 48 371PNPK Point Peak Shale Member of Wilberns Formation 48 371RESH Rocks Between Ellenberger-San Saba Aquifer and Hickory Ss Mbr Riley Fm 48 371RILY Riley Formation 48 371SNSB San Saba Limestone 48 371WELG Welge Sandstone 48 371WLBR Wilberns Formation 48 400ALMR Allamoore Limestone 48 400CRZM Carrizo Mountain Schist 48 400GRNT Precambrian Granite 48 400HZEL Hazel Sandstone 48 400LLNO Llano Series 48 400PCKD Packsaddle Schist 48 400PCMB Precambrian Erathem 48 400VNHR Van Horn Sandstone 48 400VSPG Valley Spring Gneiss 48 BASEMENT Basement 48 BEDROCK Bedrock 49 100ALVF Alluvial Fan Deposits 49 100ALVM Alluvium 49 100VLFL Valley Fill 49 110ALVM Quaternary Alluvium 49 110BSLT Basalt 49 110COVM Colluvium, Quaternary (Holocene or Pleistocene, Unknown) 49 110PTOD Pediment, Terrace, and Other Deposits of Gravel and Sand 49 110QRNR Quaternary System 49 110TRRCL Terrace, Low, Deposits 49 110UCDD Unconsolidated Deposits 49 110VLFL Valley Fill 49 111ALVM Holocene Alluvium 49 111BVRB Beaver Basin Formation (Holocene-Pleistocene) 49 111CLVM Colluvium 49 111GLDB Gold Basin Formation 49 111HLCN Holocene Series 49 111ISPG Ice Springs Craters Flow 49 111LDLD Landslide Deposits 49 112ALPN Alpine Formation 49 112ALVM Alluvium 49 112AXTL Axtell Formation 49 112BNVL Bonneville Formation of Lake Bonneville Group 49 112DRPR Draper Formation of Lake Bonneville Group 49 112EGML Eight Mile Dacite (Pleistocene-Pliocene) 49 112FMLB Fumarole Butte Basalt 49 112HPLM Harpole Mesa Formation 49 112LAKE Lake Deposits 49 112LKBV Lake Bonneville Group 49 112LLCD Little Cottonwood Formation of Lake Bonneville Group 49 112OTSH Outwash 49 112PCCK Placer Creek Formation 49 112PLSC Pleistocene Series 49 112PROV Provo Formation of Lake Bonneville Group 49 112PVNT Pavant Flow 49 112SALK Salt Creek Fanglomerate 49 112SVRV Sevier River Formation (Pleistocene-Pliocene) 49 112TBCL Tabernacle Flow 49 120BVHL Beaver Hill Tuff of Mount Belknap Volcanic Group 49 120CBCK Crab Creek Formation 49 120CCHL Crescent Hill Rhyolite of Mount Belknap Volcanic Group 49 120CVMN Cove Mountain Formation 49 120FLPM Flattop Mountain Suite 49 120GLDM Gold Mountain Tuff of Mount Belknap Volcanic Group 49 120GRHL Gray Hills Arkose of Mount Belknap Volcanic Group 49 120HSLV Horn Silver Andesite 49 120IDHL Indian Hollow Rhyolite of Mount Belknap Volcanic Group 49 120IRSV Intrusive Rocks 49 120JDCK Judd Creek Latite 49 120KGMN Keg Mountain Ignimbrites 49 120KGSP Keg Spring Andesite, Latite 49 120KMBL Kimberly Rhyolite of Mount Belknap Volcanic Group 49 120KOLB Kolob Latite 49 120MAFC Mafic Rocks 49 120MBKP Mount Belknap Rhyolite of Mount Belknap Volcanic Group 49 120MORN Moroni Formation 49 120MPRG Maple Ridge Porphyry 49 120PNVL Pine Valley Latite 49 120RLCN Raul Canyon Basalt 49 120RNCR Rencher Formation 49 120SLCK Shoal Creek Breccia 49 120STLY Staley Pasture Tuff of Mount Belknap Volcanic Group 49 120TBBL Tibble Formation 49 120TPZM Topaz Mountain Rhyolite 49 120TRTR Tertiary System 49 120VLCC Volcanic Rocks 49 121BRPK Browns Park Formation (Pliocene-Miocene) 49 121CCVL Cache Valley Group (Pliocene-Miocene) 49 121CMPW Camp Williams Unit of Salt Lake Formation 49 121CODC Cottonwood Canyon Formation (Pliocene-Miocene) 49 121DRHL Dry Hollow Formation 49 121GRPK Geyser Peak Fanglomerate 49 121HRKR Harkers Fanglomerate Member of Salt Lake Formation 49 121HSVL Huntsville Fanglomerate 49 121JLTT Joe Lott Tuff 49 121MDCK Muddy Creek Formation 49 121MKCK Mink Creek Conglomerate of Salt Lake Formation 49 121PATT Payette Formation (Pliocene-Miocene) 49 121PLCN Pliocene Series 49 121PRNP Parunuweap Formation 49 121RGPK Roger Peak Basaltic Breccia 49 121SLLK Salt Lake Formation 49 121TPZM Topaz Mountain Tuff 49 122AXTL Axtell Formation (Pleistocene-Pliocene) 49 122BLNC Bullion Canyon Volcanics 49 122BRHD Brian Head Formation 49 122BRVL Bear Valley Formation 49 122DLPK Delano Peak Latite Member of Bullion Canyon Volcanics 49 122JRDN Jordan Narrows Unit of Salt Lake Formation (Miocene-Oligocene) 49 122MOCN Miocene Series 49 122PGRC Page Ranch Formation (Miocene-Oligocene) 49 122RCKC Rock Candy Agglomerate and Latite of Bullion Canyon Volcanics 49 122TRVR Traverse Volcanics of Salt Lake Formation (Miocene-Oligocene) 49 123BLDK Bald Knoll Formation 49 123BLDL Baldhills Member of Isom Formation 49 123CKCK Chicken Creek Tuff (Oligocene-Eocene) 49 123CZHL Crazy Hollow Formation 49 123DCRV Duchesne River Formation 49 123FLCK Fool Creek Conglomerate 49 123ISOM Isom Formation 49 123NDRG Needles Range Formation 49 123NRWD Norwood Tuff of Salt Lake Formation 49 123OLGC Oligocene Series 49 123PEOA Peoa Tuff 49 123PRKC Park City Volcanics 49 123QCHP Quichapa Formation 49 123RSCN Rose Canyon Latite-Andesite Volcanics 49 123SMNN South Mountain Andesite Flows 49 123WRDS Wanrhodes Volcanics 49 124APEX Apex Conglomerate 49 124CLAR Claron Limestone or Formation 49 124CLTN Colton Formation 49 124DGCK Douglas Creek Member of Green River Formation 49 124DPGV Dipping Vat Formation 49 124EGLH Eagle Hill Rhyolite 49 124EOCN Eocene Series 49 124FCVC Felsic Volcanic Rocks 49 124FLGF Flagstaff Limestone (Eocene-Paleocene) 49 124FRNW Fernow Quartz Latite 49 124GDGC Garden Gulch Member of Green River Formation 49 124GDRC Goldens Ranch Formation 49 124GRRV Green River Formation 49 124HRBC Horse Bench Sandstone Bed of Uinta Formation 49 124LGUN Laguna Latite 49 124PCCK Parachute Creek Member of Green River Formation 49 124PCKO Packard Quartz Latite 49 124SGPK Shaggy Peak Rhyolite 49 124TCKV Tickville Rhyolite 49 124TPTN Tipton Shale Member of Green River Formation 49 124UINT Uinta Formation 49 124WSTC Wasatch Formation 49 124WTSG White Sage Formation 49 125CDBK Cedar Breaks Formation 49 125EVAS Evanston Formation (Paleocene-Upper Cretaceous) 49 125FRUN Fort Union Formation 49 125NRHR North Horn Formation (Paleocene-Upper Cretaceous) 49 125PLCN Paleocene Series 49 200BCKT Beckwith Formation 49 200MNCS Mancos Shale 49 200MSZC Mesozoic Erathem 49 200SGCF Straight Cliffs Sandstone 49 210CRCS Cretaceous System 49 210DKOT Dakota Sandstone or Formation or Group 49 210TSHR Tushar Conglomerate 49 211ABRD Aberdeen Sandstone Member of Blackhawk Formation 49 211ACRM Anchor Mine Tongue of Mancos Shale 49 211ALVL Allen Valley Shale of Indianola Group 49 211APRG Asphalt Ridge Sandstone of Mesaverde Group 49 211BCKK Blackhawk Formation of Mesaverde Group 49 211BCRK Bennion Creek Formation 49 211BLCL Bluecastle Sandstone Member 49 211BLGT Blue Gate Shale Member of Mancos Shale 49 211BLIR Blair Formation of Mesaverde Group 49 211BUCK Buck Tongue of Mancos Shale 49 211CSLG Castlegate Sandstone of Mesaverde Group 49 211CTCK Currant Creek Formation 49 211ECCN Echo Canyon Conglomerate 49 211EMRY Emery Sandstone Member of Mancos Shale 49 211ERCS Ericson Sandstone or Formation of Mesaverde Group 49 211FKVL Funk Valley Formation of Indianola Group 49 211FRNR Frontier Formation 49 211FRRN Ferron Sandstone Member of Mancos Shale 49 211FRRR Farrer Formation 49 211GRLC Garley Canyon Sandstone Member of Mancos Shale 49 211HLRD Hilliard Shale or Formation 49 211HNFR Henefer Formation 49 211ISPG Iron Springs Formation 49 211KPRS Kaiparowits Formation 49 211MSUK Masuk Member of Mancos Shale 49 211MVRD Mesaverde Group 49 211NSLN Neslen Formation of Mesaverde Group 49 211PCRV Price River Formation of Mesaverde Group 49 211RKSP Rock Springs Formation of Mesaverde Group 49 211SEGO Sego Sandstone of Mesaverde Group 49 211SNPT Sanpete Formation of Indianola Group 49 211SRPN Star Point Sandstone of Mesaverde Group 49 211SXMC Sixmile Canyon Formation of Indianola Group 49 211TNNK Tununk Shale Member of Mancos Shale 49 211TRPC Tropic Shale or Formation 49 211TSCR Tuscher Formation of Mesaverde Group 49 211WHWP Wahweap Sandstone 49 211WNSP Wanship Formation 49 217ASPE Aspen Shale Member of Mancos Shale 49 217BCKR Buckhorn Conglomerate Member of Cedar Mountain Formation 49 217BRCN Burro Canyon Formation 49 217BRRV Bear River Formation 49 217CDRM Cedar Mountain Formation 49 217CLVL Cloverly Formation 49 217KLVN Kelvin Formation 49 217MWRY Mowry Shale 49 220GLEC Glen Canyon Formation or Group (Jurassic-Triassic) 49 220JRSC Jurassic System 49 220NVJO Navajo Sandstone of Glen Canyon Group 49 221ARPN Arapien Shale 49 221BLUFS Bluff Sandstone of San Rafael Group 49 221BRUB Brushy Basin Member of Morrison Formation 49 221CRML Carmel Formation of San Rafael Group 49 221CRTS Curtis Formation of San Rafael Group 49 221CSPG Cow Springs Sandstone 49 221DBDG Dewey Bridge Member of Entrada Sandstone 49 221ERAD Entrada Sandstone of San Rafael Group 49 221JCCK Junction Creek Sandstone of San Rafael Group 49 221MRSN Morrison Formation 49 221PRSS Preuss Sandstone or Redbeds 49 221RECP Recapture Member of Morrison Formation 49 221SALW Salt Wash Member of Morrison Formation 49 221SMVL Summerville Formation of San Rafael Group 49 221SRFL San Rafael Group 49 221STMP Stump Sandstone 49 221TGLC Twist Gulch Member of Arapien Shale 49 221TVMC Twelvemile Canyon Member of Arapien Shale 49 221WERC Westwater Canyon Member of Morrison Formation 49 221WNSR Winsor Formation of San Rafael Group 49 227GLNC Glen Canyon Group (Jurassic) 49 227NGGT Nugget Sandstone 49 227NVJO Navajo Sandstone (Jurassic) 49 230HSKN Hoskinnini Member of Moenkopi Formation 49 230MNKP Moenkopi Formation 49 230TDRF Tenderfoot Member of Moenkopi Formation 49 230TRSC Triassic System 49 231ANKR Ankareh Shale, Formation, or Redbeds 49 231CCRK Church Rock Member of Chinle Formation 49 231CDRC Cedar City Tongue of Kayenta Formation 49 231CHNL Chinle Formation 49 231DSCR Dinosaur Canyon Member of Moenave Formation 49 231DSRC Dinosaur Canyon Sandstone Member of Moenave Formation 49 231GRTR Gartra Member of Chinle Formation 49 231KAYN Kayenta Formation of Glen Canyon Group 49 231LKCK Lukachukai Member of Wingate Sandstone 49 231MBCK Moss Back Member of Chinle Formation 49 231MNRB Monitor Butte Member of Chinle Formation 49 231MONV Moenave Formation of Glen Canyon Group 49 231PFDF Petrified Forest Member of Chinle Formation 49 231SBKB Shnabkaib Member of Moenkopi Formation 49 231SPGD Springdale Sandstone Member of Moenave Formation 49 231SRMP Shinarump Member of Chinle Formation 49 231SUCD Suicide Grit of Ankareh Formation 49 231TMPM Temple Mountain Member of Chinle Formation 49 231WIGT Wingate Sandstone of Glen Canyon Group 49 231WMRP Whitmore Point Member of Moenave Formation 49 234PRTT Pariott Member of Moenkopi Formation 49 234SWMP Sewemup Member of Moenkopi Formation 49 237AGTL Agathla Sandstone 49 237ALBB Ali Baba Member of Moenkopi Formation 49 237DNDY Dinwoody Formation 49 237HRNG Harrington Formation 49 237MGNY Mahogany Formation 49 237SNBD Sinbad Limestone Member of Moenkopi Formation 49 237TMPP Timpoweap Member of Moenkopi Formation 49 237TYNS Thaynes Limestone, Formation or Group 49 237VRGN Virgin Limestone Member of Moenkopi Formation 49 237WDSD Woodside Formation, Siltstone and/or Redbeds 49 300CRSL Crystalline Rocks, Undifferentiated 49 300DVCK Dove Creek Formation or Group 49 300MOLS Molas Formation (Pennsylvanian-Mississippian) 49 300PLZC Paleozoic Erathem 49 300RICO Rico Formation 49 300SUPI Supai Formation of Aubrey Group (Permian-Pennsylvanian) 49 300WLLS Wells Formation (Permian-Pennsylvanian) 49 310ABRY Aubrey Group (Permian-Pennsylvanian) 49 310ARCU Arcturus Limestone or Formation 49 310BSPG Bird Spring Formation (Permian-Pennsylvanian-Mississippian) 49 310CDRM Cedar Mesa Sandstone Member of Cutler Formation 49 310CLVL Callville Limestone (Permian-Pennsylvanian-Mississippian) 49 310COCNA Coconino Sandstone of Aubrey Group 49 310CTLR Cutler Formation 49 310DCLL De Chelly Sandstone Member of Cutler Formation 49 310DMCK Diamond Creek Sandstone 49 310GERR Gerster Formation 49 310HERM Hermit Shale of Aubrey Group 49 310HLGTC Halgaito Tongue or Member of Cutler Formation 49 310INDC Indian Canyon Formation of Park City Group 49 310KIBB Kaibab Limestone 49 310KRKM Kirkman Limestone 49 310LORY Loray Formation 49 310OARKC Organ Rock Tongue or Member of Cutler Formation 49 310OQRR Oquirrh Group (Permian-Pennsylvanian-Mississippian) 49 310PKON Pakoon Limestone 49 310PRKC Park City Formation or Group 49 310PRMN Permian System 49 310PSPR Phosphoria Formation 49 310PYMP Plympton Formation of Park City Group 49 310RIPS Riepe Spring Limestone 49 310RPTN Riepetown Sandstone 49 310TORP Toroweap Formation of Aubrey Group 49 310WEBR Weber Quartzite or Sandstone (Permian-Pennsylvanian) 49 310WTRM White Rim Sandstone Member of Cutler Formation 49 317QNTP Queantoweap Sandstone 49 319ELPC Elephant Canyon Formation 49 320ELPN Elephant Limestone 49 320ELY Ely Limestone 49 320MNGC Manning Canyon Shale (Pennsylvanian-Mississippian) 49 320PSLV Pennsylvanian System 49 320TLDN Tilden Limestone Lentil 49 320TLSM Talisman Quartzite 49 321BGMM Bingham Mine Formation of Oquirrh Group 49 321HKTL Honaker Trail Member of Hermosa Formation 49 321KLRC Kessler Canyon Formation of Oquirrh Group 49 324ERDA Erda Formation of Oquirrh Group 49 324HOGN Hogan Formation 49 324HRMS Hermosa Formation 49 324MRGN Morgan Formation 49 324PRDX Paradox Member of Hermosa Formation 49 327LKPN Lake Point Limestone of Oquirrh Group 49 327PKRT Pinkerton Trail Limestone Member of Hermosa Formation 49 327WSCN West Canyon Limestone of Oquirrh Group 49 330BRZR Brazer Limestone or Dolomite 49 330DSRT Deseret Limestone 49 330LDVL Leadville Limestone 49 330MDSN Madison Group 49 330MSSP Mississippian System 49 330RDLL Redwall Limestone 49 330SSBR Stansbury Formation (Mississippian-Devonian) 49 330TPCH Topache Limestone (Mississippian-Devonian) 49 331CFDR Chesterfield Range Group 49 331CNMN Chainman Shale 49 331DGNT Doughnut Formation 49 331DMPK Diamond Peak Formation 49 331GRBL Great Blue Limestone or Formation 49 331GRRV Green Ravine Formation 49 331HMBG Humbug Formation 49 331OCRM Ochre Mountain Limestone 49 331WDMN Woodman Formation 49 337FCVL Fitchville Formation 49 337GRDS Gardison Limestone 49 337JOAN Joana Limestone 49 337LDGP Lodgepole Limestone of Madison Group 49 337LTHM Leatham Formation 49 337NRCN Narrow Canyon Limestone (Lower Mississippian-Upper Devonian) 49 337PILT Pilot Shale (Lower Mississippian-Upper Devonian) 49 337PNPK Pinyon Peak Limestone (Lower Mississippian-Upper Devonian) 49 340BLBL Bluebell Dolomite (Devonian-Silurian-Ordovician) 49 340DVNN Devonian System 49 340KGSC Kings Canyon Dolomite 49 340RDWR Red Warrior Limestone (Devonian-Silurian-Ordovician) 49 341ANTH Aneth Formation 49 341BRDN Beirdneau Formation 49 341CVFR Cove Fort Quartzite 49 341EGLM Engelmann Formation (Upper-Middle Devonian) 49 341ELBR Elbert Formation 49 341GLMT Guilmette Formation 49 341GLSN Gilson Dolomite 49 341GSHT Goshoot Formation 49 341HNUR Hanauer Formation 49 341HYRM Hyrm Dolomite (Upper-Middle Devonian) 49 341JEFF Jefferson Limestone, Dolomite, Formation or Group 49 341MWTZ Mowitza Shale 49 341OURY Ouray Limestone 49 341VCTR Victoria Formation 49 344MDPK Muddy Peak Limestone 49 344SMNS Simonson Dolomite 49 347SEVY Sevy Dolomite (Lower Devonian-Upper Silurian) 49 350BVLK Beaver Lake Dolomite (Silurian-Upper Ordovician) 49 350DCTN Decathon Dolomite 49 350FLRD Floride Dolomite 49 350JCKV Jack Valley Formation 49 350LMMN Lime Mountain Dolomite 49 350LNMN Lone Mountain Dolomite 49 350SLRN Silurian System 49 354BLHL Bell Hill Dolomite 49 354HRST Harrisite Dolomite 49 354LSSP Lost Sheep Dolomite 49 354ROBM Roberts Mountain Formation or Limestone 49 354TRSD Thursday Dolomite 49 360CKCR Chokecherry Dolomite (Ordovician-Upper Cambrian) 49 360GRMP Grampian Limestone (Ordovician-Cambrian) 49 360HOUS House Limestone of Pogonip Group (Ordovician-Cambrian) 49 360ODVC Ordovician System 49 360PGNP Pogonip Group (Ordovician-Cambrian) 49 361EURK Eureka Quartzite 49 361FSHV Fish Haven Dolomite 49 364GADC Garden City Formation or Limestone (Middle-Lower Ordovician) 49 364KNSH Kanosh Shale of Pogonip Group 49 364LHMN Lehman Formation of Pogonip Group 49 364SNPK Swan Peak Formation 49 367FLMR Fillmore Limestone of Pogonip Group 49 367JUAB Juab Limestone of Pogonip Group 49 367OPNG Opohonga Limestone 49 367WHWH Wahwah Limestone of Pogonip Group 49 370CMBR Cambrian System 49 370MRHS Morehouse Quartzite 49 370NUNN Nounan Limestone (Upper-Middle Cambrian) 49 370PNVL Pine Valley Quartzite 49 371AJAX Ajax Dolomite 49 371CSPG Corset Spring Shale 49 371DDBG Dunderburg Shale 49 371DGRG Dugway Ridge Dolomite 49 371FERA Fera Limestone 49 371HCKS Hicks Formation 49 371LAMB Lamb Dolomite (Upper-Middle Cambrian) 49 371LODR Lodore Formation or Shale 49 371LYNC Lynch Dolomite (Upper-Middle Cambrian) 49 371NCPK Notch Peak Limestone 49 371OPEX Opex Formation 49 371ORR Orr Formation 49 371SCRL St Charles Limestone 49 371SRGC Straight Canyon Formation 49 374ABMB Abercrombie Formation 49 374BCKM Blacksmith Dolomite or Limestone 49 374BIGM Brigham Quartzite (Middle Cambrian-Upper Precambrian) 49 374BLBD Bluebird Dolomite 49 374BLMG Bloomington Formation 49 374BWMN Bowman Limestone 49 374CLCN Cole Canyon Dolomite 49 374CSLM Chisholm Shale 49 374DGMR Dagmar Dolomite 49 374DOME Dome Limestone 49 374FDGL Fandangle Limestone 49 374HRKM Herkimer Limestone 49 374HRMN Hartmann Limestone 49 374HWLL Howell Formation 49 374LNDN Lyndon Limestone 49 374LNGS Langston Limestone 49 374MRJM Marjum Limestone 49 374MXFD Maxfield Limestone 49 374OPHR Ophir Formation or Shale 49 374PIOC Pioche Shale (Middle-Lower Cambrian) 49 374SDCL Shadscale Formation 49 374SWSY Swasey Formation 49 374TNTC Tintic Quartzite (Middle-Lower Cambrian) 49 374TRLR Trailer Limestone 49 374TRPP Trippe Limestone 49 374TTNC Teutonic Limestone 49 374UTE Ute Limestone 49 374WEKS Weeks Limestone (Upper-Middle Cambrian) 49 374WHLR Wheeler Formation 49 374WRLD Whirlwind Formation 49 374YGPK Young Peak Dolomite 49 377BSBY Busby Quartzite 49 377CBIN Cabin Shale 49 377POPM Prospect Mountain Quartzite (Lower Cambrian-Upper Precambrian) 49 400ABRG Albion Range Group 49 400ASCN Auts Canyon Formation of Sheeprock Group 49 400BGCD Big Cottonwood Formation 49 400BLDM Bald Mountain Formation 49 400EKKR Ekker Formation of Sheeprock Group 49 400FMGC Farmington Canyon Complex 49 400GECK Green Creek Complex 49 400HRSC Horse Canyon Formation 49 400LLWL Little Willow Series 49 400MCCK Mc Coy Creek Group 49 400MLFK Mineral Fork Tillite 49 400MUTL Mutual Formation 49 400PCMB Precambrian Erathem 49 400RDCK Red Creek Quartzite 49 400RDPN Red Pine Shale of Uinta Mountain Group 49 400SPCK Sheeprock Group or Series 49 400UNMN Uinta Mountain Group 49 400WLDC Wildhorse Canyon Series 49 BASEMENT Basement 49 BEDROCK Bedrock 50 111ALVM Holocene Alluvium 50 111BECH Beach Deposits 50 111CLVM Colluvium 50 111EOLN Eolian Deposits 50 111FILL Fill 50 111MRIN Marine Deposits 50 111SDMN Sediments, Undifferentiated 50 111SWMP Swamp Deposits 50 112DELT Delta Deposits 50 112ICCCE Ice-Contact Deposits, Including Eskers and Kames 50 112LCSR Lacustrine Deposits 50 112MORND Moraine Deposits, Except Ground Moraine and Drumlins 50 112MRIN Marine Deposits 50 112OTSH Outwash 50 112SRFD Stratified Deposits, Undifferentiated 50 112TILL Till 50 120SDMS Sediments 50 200CRSL Crystalline Rocks 50 210SDMS Sediments, Undifferentiated 50 230IGNSE Igneous Rocks, Extrusive 50 230IGNSI Igneous Rocks, Intrusive 50 230SDMR Triassic Sedimentary Rocks 50 231EBRL East Berlin Formation 50 231HLYK Holyoke Basalt 50 231HMPD Hampden Basalt 50 231NHVN New Haven Formation 50 231PRLD Portland Formation 50 300CRSL Crystalline Rocks, Undifferentiated 50 300CRSLC Crystalline Rocks, Carbonate 50 300CRSLN Crystalline Rocks, Noncarbonate 50 320CRSL Crystalline Rocks 50 320SDMR Sedimentary Rocks 50 330CRSL Crystalline Rocks 50 330SDMR Sedimentary Rocks 50 340CRSL Crystalline Rocks, Undifferentiated 50 340CRSLC Crystalline Rocks, Carbonate 50 340CRSLN Crystalline Rocks, Noncarbonate 50 350CRSL Crystalline Rocks, Undifferentiated 50 350CRSLC Crystalline Rocks, Carbonate 50 350CRSLN Crystalline Rocks, Noncarbonate 50 360CRSL Crystalline Rocks, Undifferentiated 50 360CRSLC Crystalline Rocks, Carbonate 50 360CRSLN Crystalline Rocks, Noncarbonate 50 370CRSL Crystalline Rocks, Undifferentiated 50 370CRSLC Crystalline Rocks, Carbonate 50 370CRSLN Crystalline Rocks, Noncarbonate 50 400CRSL Crystalline Rocks, Undifferentiated 50 400CRSLC Crystalline Rocks, Carbonate 50 400CRSLN Crystalline Rocks, Noncarbonate 50 BASEMENT Basement 50 BEDROCK Bedrock 51 000AARF Amphibolite and Amphibolite Rich Foliats 51 000CLMB Columbia Granite 51 000EVRN Everona Limestone 51 000GHBG Granite and Hornblend Gneiss 51 000GRGS Granite Gneiss 51 000GRNT Granite 51 000GVCC Greenstone Volcanics 51 000HGGT Hornblend Gabbro and Gneiss Talc 51 000IRSV Intrusive Rocks 51 000LMMB Limestone and Marble 51 000MMPS Metamorphosed Sedimentary Rocks 51 000MPVS Metamorphosed Volcanic and Sedimentary Rocks 51 000QRZD Quartz Diorite 51 000SAND Sand (Unknown Age) 51 100CNZC Cenozoic Erathem 51 110QRNR Quaternary System 51 111DMMP Dismal Swamp Peat 51 111HLCN Holocene Series 51 111SDMN Sediments, Undifferentiated 51 112BCCL Bacons Castle Formation 51 112CLMB Columbia Group 51 112GBDG Great Bridge Formation 51 112KPVL Kempsville Formation 51 112LDBG Londonbridge Formation 51 112MORG Moorings Unit 51 112NFLK Norfolk Formation 51 112PLSC Pleistocene Series 51 112SDBG Sandbridge Formation 51 112SDLY Sedley Formation 51 112WDSR Windsor Formation 51 120TRTR Tertiary System 51 121CSPKU Upper Chesapeake Group 51 121PCMC Pliocene-Miocene Series 51 121PLCN Pliocene Series 51 122CLVR Calvert Formation 51 122CPNK Choptank Formation 51 122CSPK Chesapeake Group 51 122CSPKL Lower Chesapeake Group 51 122MOCN Miocene Series 51 122SMRS St Marys Formation 51 122YRKN Yorktown Formation 51 123OLGC Oligocene Series 51 124CCKM Chickahominy Formation 51 124ECPC Eocene-Paleocene Series 51 124EOCN Eocene Series 51 124MRLB Marlboro Clay 51 124NNJM Nanjemoy Formation 51 124PMNK Pamunkey Group 51 125AQUI Aquia Formation 51 125BRGS Brightseat Formation 51 125MTPN Mattaponi Formation 51 125PLCN Paleocene Series 51 200MSZC Mesozoic Erathem 51 210CRCS Cretaceous System 51 211CRAQU Upper Cretaceous Aquifer System 51 211CRCSU Upper Cretaceous Series 51 217CRCSL Lower Cretaceous Series 51 217POMC Potomac Group 51 217PPSC Patapsco Formation 51 217PTXN Patuxent Formation 51 220JRSC Jurassic System 51 230CDRF Cedar Forest Formation 51 230DRFK Dry Fork Formation 51 230IGNS Igneous Rocks 51 230LKVL Leaksville Formation 51 230TRSC Triassic System 51 231BLBF Balls Bluff Formation 51 231BLRN Bull Run Formation 51 231MNSS Manassas Formation 51 231NWRK Newark Group 51 231ORDL Otterdale Sandstone 51 231TRSCU Upper Triassic Series 51 231VINT Vinta Formation 51 300AGBK Alligator Back Formation, Finely Laminated Gneiss (Main Part) 51 300AGBKS Alligator Back Formation, Mica Schist 51 300AGRKA Alligator Back Formation, Amphibolite and Greenstone 51 300ARCH Arch Marble 51 300BGVL Big Valley Formation 51 300CCKV Cockeysville Marble 51 300CDLR Candler Formation 51 300CPMC Chopawamsic Formation 51 300EVNG Evington Group 51 300JSHU Joshua Schist 51 300MNAS Mount Athos Formation 51 300PLIR Pelier Schist 51 300PLZC Paleozoic Erathem 51 300PRBG Petersburg Granite 51 300PZPB Paleozoic-Precambrian Erathems 51 300SNGP Stoney Gap Sandstone Member of Hinton Formation 51 300SPCK Slippery Creek Greenstone 51 300UFRK Ultramafic Rock, Clorite-Tremolite, Magnetite Schist 51 300WICKS Wissahickon Schist 51 310PRMN Permian System 51 320PSLV Pennsylvanian System 51 324GDVN Gladeville Sandstone and Norton Formation 51 324GLDV Gladeville Sandstone 51 324HRLN Harlan Group 51 324NRTN Norton Formation 51 324PRBG Petersburg Formation 51 324PSLVM Middle Pennsylvanian Series 51 324WISE Wise Formation 51 327LEE Lee Formation 51 327PSLVL Lower Pennsylvanian Series 51 330CVCK Cove Creek Limestone 51 330GRGR Grainger Formation 51 330MCCD Maccrady Shale 51 330MCCP Mac Crady and Price Formation 51 330MSSP Mississippian System 51 330NWMN Newman Limestone 51 330PRIC Price Formation 51 331BFGB Bluefield Formation and Greenbrier Limestone 51 331BLFD Bluefield Formation 51 331BLPR Bluestone and Princeton Formations 51 331BLSN Bluestone Formation 51 331FIDO Fido Sandstone 51 331GRBR Greenbrier Limestone 51 331HNTN Hinton Formation 51 331LLVL Little Valley Limestone 51 331MSSPU Mississippian, Upper 51 331PENG Pennington Group 51 331PRNS Prinston Formation 51 337MPDV Mississippian-Devonian System 51 337MSSPL Mississippian, Lower 51 337POCN Pocono Formation 51 340DVNN Devonian System 51 340HRVL Hunterville Chert 51 341BRLR Brallier Formation 51 341CMNG Chemung Formation 51 341DVNNU Devonian, Upper 51 341GENS Genesee Formation 51 341HMPR Hampshire Formation 51 341MLBR Millboro Shale 51 344DVNML Middle-Lower Devonian Series 51 344DVNNM Devonian, Middle 51 344HAML Hamilton Formation 51 344MRCL Marcellus Shale 51 344NDMR Needmore Shale 51 344ONDG Onondaga Limestone 51 347BCRF Becraft Limestone 51 347CMNS Coeymans Limestone 51 347DVNNL Devonian, Lower 51 347DVSL Devonian-Silurian Systems 51 347HDBG Helderberg Group 51 347KYSR Keyser Limestone 51 347LKCK Licking Creek Limestone 51 347NSCD New Scotland Limestone 51 347RDGL Ridgeley Sandstone 51 350SLRN Silurian System 51 350SOVC Silurian-Ordovician Systems 51 351SLRNU Silurian, Upper 51 351TNLY Tonoloway Limestone 51 351WLCK Wills Creek Formation 51 352BMBG Bloomsburg Formation 51 352CYUG Cayuga Group 51 352HCCK Hancock Dolomite 51 354CLNC Clinch Sandstone 51 354CLNN Clinton Formation 51 354CLTC Clinton and Tuscarora Formations 51 354MCKZ Mc Kenzie Formation 51 354MSNN Massanutten Sandstone 51 354SLRNM Silurian, Middle 51 357SLRNL Silurian, Lower 51 357TCRR Tuscarora Sandstone 51 360ODVC Ordovician System 51 361ARVN Arvonia Formation 51 361JUNT Juniata Formation 51 361MRBG Martinsburg Shale 51 361ODVCU Ordovician, Upper 51 361ODVUM Upper-Middle Ordovician Series 51 361OSWG Oswego Sandstone 51 361QNTC Quantico Slate 51 361SQTC Sequatchie Formation 51 364BCKF Blackford Formation 51 364BNBL Benbolt Limestone 51 364BNHR Ben Hur Limestone 51 364BOWN Bowen Limestone 51 364CLRS Collierstown Limestone 51 364DOT Dot Limestone 51 364EDBG Edinburg Formation 51 364EFFN Effna Limestone 51 364EGLS Eggleston Formation 51 364ELWY Elway Limestone 51 364FVOK Five Oak Limestone 51 364GRTN Gratton Limestone 51 364HCBG Hurricane Bridge Limestone 51 364HDCK Hardy Creek Limestone 51 364LCLR Lincolnshire Formation 51 364LRCH Lurich Formation 51 364MCGL Mc Glone Formation 51 364MCSN Moccasin Formation 51 364MRCK Martin Creek Limestone 51 364NMRK New Market Limestone 51 364ODVCM Ordovician, Middle 51 364ORND Oranda Formation 51 364POTT Poteet Formation 51 364RBCP Rob Camp Limestone 51 364RCKD Rockdell Limestone 51 364RYCV Rye Cove Formation 51 364TRNN Trenton Limestone 51 364WDWY Woodway Limestone 51 364WLCK Whistlecreek Limestone 51 364WRDL Wardell Limestone 51 364WTTN Witten Limestone 51 367BKCP Beekmantown and Chepultepec Formations 51 367BKMN Beekmantown Group 51 367BLFN Bellefonte Formation 51 367CPPC Chepultepec Dolomite 51 367KNOX Knox Dolomite 51 367MKLV Mascot, Kingsport and Longview Formations 51 367NTTN Nittany Formation 51 367ODVCL Ordovician, Lower 51 367OVCB Ordovician-Cambrian Systems 51 370CMBR Cambrian System 51 370CNSG Coansauga Group 51 371CBBRU Upper Cambrian Series 51 371CCCG Conococheague Formation 51 371CCCGG Conococheague Group 51 371CMBRU Cambrian, Upper 51 371COSG Conasauga Group 51 371CPRG Copper Ridge Dolomite 51 371ELBK Elbrook Formation 51 371MADV Maynardville Formation 51 371NCCK Nolichucky Shale 51 374CMBRM Cambrian, Middle 51 374HNKR Honaker Dolomite 51 374MRVL Maryville Limestone 51 374PPKV Pumpkin Valley Shale 51 374RGVL Rogersville Shale 51 374RLDG Rutledge Limestone 51 377CHLH Chilhowee Group 51 377CMBRL Lower Cambrian Series 51 377ERWN Erwin Formation 51 377FDCK Frederick Limestone 51 377HMPN Hampton Shale or Formation 51 377LUDN Loudoun Formation 51 377ROME Rome Formation 51 377SHDY Shady Dolomite 51 377UNCO Unicoi Formation 51 377WVRN Weverton Formation 51 400ALUM Alum Phillite 51 400ASHE Ashe Formation, Thinly Layered Gneiss (Main Part) 51 400ASHEA Ashe Formation, Amphibolite 51 400BVCK Beaverdam Creek Augen Gneiss 51 400CLVL Charlottesville Formation 51 400CMRS Comers Granite Gneiss 51 400CRVL Carsonville Granite 51 400CTCN Catoctin Formation 51 400CTRN Cattron Gneiss 51 400GRAS Grayson Granodiorite Gneiss 51 400GRGS Granite Gneiss 51 400LCBG Lynchburg Formation 51 400LLRV Little River Gneiss of Dietrich, of Elk Park Plutonic Group 51 400LTRD Leatherwood Granite 51 400LVGS Lovingston Formation 51 400MLRS Melrose Granite 51 400MMRV Mechums River Formation 51 400MONT Moneta Gneiss 51 400MRGR Mount Rogers Volcanic Group 51 400MRHL Marshall Formation 51 400ODRG Old Rag Formation 51 400PCMB Precambrian Erathem 51 400PDLR Pedlar Formation 51 400RBRV Robertson River Formation 51 400RCKF Rockfish Conglomerate 51 400RDOK Redoak Granite 51 400RSLD Roseland Anorthosite 51 400SDDL Saddle Gneiss 51 400SFRN Swift Run Formation 51 400SHOL Shoal Gneiss 51 400SLTN Shelton Granite Gneiss 51 400SPRK Striped Rock Granite 51 400VGBG Virginia Blueridge Complex 51 400VRGL Virgilina Group 51 400WLLS Willis Phyllite 51 BASEMENT Basement 51 BEDROCK Bedrock 53 000FILL Unclassified Fill 53 000HKNS Hawkins Formation 53 000LCHR Leecher Metamorphics 53 000MNSR Mount Stuart Granodiorite 53 000MTHW Methow Gneiss 53 000NWKM Newaukum Series 53 000ORCS Orcas Group 53 000OVBD Unclassified Overburden 53 000PSSN Peshastin Formation 53 000SPCK Sheep Creek Conglomerate 53 000TLBK Turtleback Complex 53 100GVWWO Gravel of Walla Walla, Older 53 100PRPH Plio-Pleistocene, Post-Ringold-Pre-Hanford Formations 53 110ALVM Quaternary Alluvium 53 110BSLT Basalt 53 110CLVM Colluvium 53 110DGHD Dogs Head Andesites 53 110DRML Drumheller Silts 53 110DUNE Dune Sand 53 110GCPK Glacier Peak Volcanics 53 110GRCK Goat Rock Pyroclastic Deposits 53 110LOSS Loess 53 110MBKR Mount Baker Lava 53 110MNRR Mount Rainier Lavas 53 110MSHS Mount St Helens Lavas 53 111ALVM Holocene Alluvium 53 111CLWD Colwood Formation 53 111DUNE Dune Sand 53 111ELCR Electron Mudflow 53 111OSCL Osceola Mudflow 53 112ADML Admiralty Drift or Clay 53 112ALVM Alluvium 53 112ARLG Arlington Gravel Member of Vashon Drift 53 112BRNG Boring Lava 53 112CLVM Colluvium 53 112COLV Colvos Sand 53 112CRSN Carson Lava 53 112CWCH Cowiche Gravel 53 112EPRC Esperance Sand Member of Vashon Drift 53 112EVCK Evans Creek Drift of Fraser Glaciation 53 112EVRS Everson Interstade of Fraser Glaciation 53 112FLVC Fluviolacustrine Deposits 53 112GALE Gale Sand 53 112GLCV Glacio-Fluviatile 53 112KTSP Kitsap Formation 53 112LCSR Lacustrine Deposits 53 112LGHL Logan Hill Formation 53 112LLCK Lily Creek Formation 53 112LWTN Lawton Clay Member of Vashon Drift 53 112MDLD Midland Sand 53 112MNRR Mount Rainier Volcanics 53 112MRIN Marine Deposits 53 112MRVL Marysville Sand Member of Vashon Drift 53 112NPLM Nespelem Silt 53 112OKNG Okanogan Till 53 112ORNG Orting Drift or Glaciation 53 112PICK Pilchuck Clay Member of Vashon Drift 53 112PLLP Puyallup Formation or Interglaciation 53 112PLUS Palouse Formation 53 112PSCO Pasco Gravels 53 112QUTS Queets Beds 53 112RGLD Ringold Formation 53 112SASP Salmon Springs Drift 53 112SCBD Scabland Flood Deposits 53 112SKKM Skokomish Gravel 53 112SLCM Steilacoom Gravel 53 112SLGM Stillaguamish Sand Member of Vashon Drift 53 112STCK Stuck Drift 53 112STSP Satsop Formation 53 112SUMS Sumas Drift of Fraser Glaciation 53 112TCHT Touchet Beds 53 112TFLS Tiflis Member of Wahluke Formation 53 112THLH Taholah Formation 53 112TILL Till 53 112TRHL Trout Hill Lava Flows 53 112TRRC Terrace Deposits 53 112TTON Tieton Andesite 53 112VSHN Vashon Drift of Fraser Glaciation 53 112WGHL Wingate Hill Drift 53 112WHLK Wahluke Formation 53 112WLLP Willapa Clays 53 120CAMS Camas Basalt 53 120CDRL Cathedral Granite 53 120CLDP Cloudy Pass Diorite 53 120KRGR Kruger Alkaline Syenites 53 120PLLK Phalen Lake Volcanics 53 120PLMR Palmer Volcanics 53 120RSLD Rossland Group 53 120SDCK Soleduck Formation 53 120SPRD Sheppard Granite 53 120TIGR Tiger Formation 53 120TSSR Twin Sisters Dunite 53 120UDRD Underwood Lava 53 121BVRL Beverly Member of Ellensburg Formation 53 121ELPM Elephant Mountain Flow 53 121HARO Haro Formation 53 121HOKO Hoko Formation 53 121HWSN Howson Andesite 53 121MNSN Montesano Formation 53 121QLLT Quillayute Formation 53 121QNLT Quinault Formation 53 121RFRV Raft River Formation 53 121RGLD Undifferentiated Ringold Formation 53 121RGLDB Basal Part of Ringold Formation 53 121RGLDL Lower Part of Ringold Formation 53 121RGLDM Middle Part of Ringold Formation 53 121RGLDU Upper Part of Ringold Formation 53 121SELH Selah Tuff Member of Ellensburg Formation 53 121SGLF Sugarloaf Andesite 53 121SLBT Selah Butte Flow 53 121SMMT Summit Conglomerate 53 121SNPS Snipes Conglomerates 53 121SQLM Snoqualmie Granodiorite 53 121TRDL Troutdale Formation 53 121UDDM Underwood Mountain Lava 53 122BRNP Browns Point Formation 53 122CBRV Columbia River Basalt Group 53 122CLLM Clallam Formation 53 122DGLC Douglas Canyon Formation 53 122EGCK Eagle Creek Formation 53 122ELBG Ellensburg Formation 53 122EMCL Enumclaw Volcanic Series 53 122FFPK Fifes Peak Formation 53 122FSPG Frenchman Springs Member of Wanapum Basalt Formation 53 122GDRD Grande Ronde Basalt Formation 53 122HMBF Hammer Bluff Formation 53 122HOH Hoh Formation 53 122HWRD Howard Arkose 53 122IMNH Imnaha Basalt of Columbia River Basalt Group 53 122LATH Latah Formation 53 122LCCK Lincoln Creek Formation 53 122LKVG Lake Vantage Lavas 53 122MBTN Mabton Member (Informal Usage) of Ellensburg Formation 53 122MSHL Mashel Formation 53 122OCDP Orchard Point Conglomerate of Blakeley Formation 53 122PCGG Picture Gorge Basalt of Columbia River Basalt Group 53 122PDOV Pend Oreille Valley Andesite 53 122PRPD Priest Rapids Member of Wanapum Basalt Formation 53 122QNCY Quincy Diatomite Bed of Priest Rapids Mbr of Yakima Basalt 53 122ROZA Roza Member of Wanapum Basalt Formation 53 122RSRP Restoration Point Member of Blakeley Formation 53 122SDLM Saddle Mountains Basalt Formation 53 122SELH Selah Member (Informal Usage) of Ellensburg Formation 53 122SKMN Skamania Volcanic Series 53 122SLVS Silver Star Granodiorite 53 122SQCK Squaw Creek Diatomite Bed of Ellensburg Formation 53 122SVRG Steves Ridge Formation 53 122TNUM Taneum Andesite 53 122VNTG Vantage Member of Ellensburg Formation 53 122WIDX West Index Andesitic Series 53 122WNPM Wanapum Basalt Formation 53 122YKIM Yakima Basalt Subgroup of Columbia River Basalt Group 53 123BLKL Blakeley Formation 53 123GROM Gerome Volcanics 53 123GRRC Gries Ranch Formation 53 123KDKM Klondike Mountain Formation 53 123LNCL Lincoln Formation 53 123MRSN Marrowstone Shale 53 123OPCS Ohanapecosh Formation 53 123PRTR Porter Shale 53 123PUGT Puget Group 53 123QMPR Quimper Sandstone 53 123RNTN Renton Formation of Puget Group 53 123RSRP Restoration Point Horizon 53 123SKCK Skate Creek Laharic Breccia 53 123STTL Seattle Formation 53 123TKWL Tukwila Formation of Puget Group 53 123TMTB Tom Thumb Tuff Member of Klondike Mountain Formation 53 123TNSD Townsend Shale 53 123TRVR Twin River Formation 53 123TUTL Toutle Formation 53 123WKKM Wahkiakum Formation 53 124BLGM Bellingham Beds 53 124BNDR Boundary Shale 53 124BYNE Bayne Series 53 124CBRV Carbon River Coal Series 53 124CCKN Chuckanut Formation 53 124CHLS Chehalis Sandstone 53 124CLTZ Cowlitz Formation 53 124CRBD Carbonado Formation of Puget Group 53 124CRSC Crescent Formation 53 124EVCK Evans Creek Coal Series 53 124FRFX Fairfax Coal Bearing Rocks 53 124FRKL Franklin Sandstone 53 124FRKLS Franklin Series 53 124GUYE Guye Formation 53 124KBHL Knob Hill Andestie 53 124KCSS Kachess Rhyolite 53 124KMMR Kummer Series 53 124KMMRF Kummer Formation 53 124LYRE Lyre Formation 53 124MCIS Mc Intosh Formation 53 124MCSN Metchosin Volcanic Series 53 124MLMN Melmont Coal Bearing Rocks 53 124MNSS Manastash Formation 53 124NCHS Naches Formation 53 124NRCF Northcraft Formation of Puget Group 53 124NTPC Natapoc Formation 53 124OBCK Obrien Creek Formation 53 124OLQU Olequa Formation 53 124OQCK Olequa Creek Member of Cowlitz Formation 53 124PELL Pe Ell Volcanics Member of Cowlitz Formation 53 124PPNC Pipestone Canyon Formation 53 124PUYR Puyer Formation 53 124RGRV Raging River Formation 53 124RSLN Roslyn Formation 53 124SCCK Scatter Creek Rhyodacite or Formation 53 124SKKK Skookumchuck Formation 53 124SLCK Stillwater Creek Member of Cowlitz Formation 53 124SNPL Sanpoil Volcanics 53 124SPKN Spiketon Formation of Puget Group 53 124SPRR South Prairie Formation 53 124SUMS Sumas Shale In Chuckanut Formation 53 124SWUK Swauk Formation 53 124TGRM Tiger Mountain Formation of Puget Group 53 124TNWY Teanaway Basalt 53 124WLKS Wilkeson Coal Series 53 125EGLE Eagle Greenschist 53 125ESTN Easton Schist 53 200JUMB Jumbo Volcanics 53 200KRGM Kruger Mountain Malignite 53 200OSYS Osoyoos Granodiorite 53 200WSKM Whiskey Mountain Granodiorite 53 210BGCL Bogachiel Formation 53 210CLEM Cle Elum Formation 53 210LCRV Leech River Group 53 210LNLK Loon Lake Granite 53 210VGRG Virginian Ridge Formation 53 211MGPK Midnight Peak Formation 53 211WNRP Winthrop Sandstone 53 217PSTN Pasayten Formation 53 217SPDN Spieden Formation 53 220EGCF Eagle Cliff Porphyrite 53 220INDX Index Granodiorite 53 220NWBY Newby Formation 53 220RMML Remmel Granodiorite 53 220TYE Tye Granite 53 221CHLN Chelan Granodiorite 53 221MTOR Meteor Granodiorite 53 221SKSN Shuksan Formation 53 230COVD Covada Group 53 230FDLG Fidalgo Formation 53 230VNTR Ventura Formation 53 300CLGS Clugston Limestone 53 300DRLK Deer Lake Argillite 53 300EGLM Eagle Mountain Quartzite 53 300FCRK Fish Creek Argillite 53 300LDPN Lead Point Argillite 53 300SNJN San Juan Series 53 310GRFL Granite Falls Limestone 53 320CHPKB Chopaka Basic Intrusives 53 320CHPKS Chopaka Schist 53 320GNPK Gunn Peak Formation 53 320HZMN Hozomeen Series 53 320KRGR Kruger Schist 53 330CLVL Colville Quartzite 53 331CHLH Chewelah Argillite 53 350SVNS Stevens Series 53 360LDBR Ledbetter Slate 53 360MLNY Maloney Metamorphic Series 53 370BCKK Buckskin Schist 53 370BNDR Boundary Argillite 53 370CDCK Cedar Creek Argillite 53 370CHKM Chiwaukum Schist 53 370DPLK Deep Lake Argillite 53 370FRNW Fernow Gneiss 53 370GYPS Gypsy Quartzite 53 370REVS Reeves Limestone Member of Maitlen Phyllite 53 370SWKN Swakane Biotite Gneiss 53 370TONG Tonga Formation 53 374MSSN Mission Argillite 53 374MTLN Metaline Limestone or Formation 53 374NRPR Northport Limestone 53 374RBCK Republican Creek Limestone 53 374RDTP Red Top Limestone 53 377ADDY Addy Quartzite 53 377MTLN Maitlen Phyllite 53 377ODDM Old Dominion Limestone 53 400BDLK Bead Lake Formation 53 400BFHP Buffalo Hump Formation of Deer Trail Group 53 400DRTL Deer Trail Group 53 400EDNA Edna Dolomite of Deer Trail Group 53 400HCKB Huckleberry Formation 53 400LEOL Leola Volcanics 53 400MCHL Mc Hale Slate of Deer Trail Group 53 400MNHL Moon Hill Quartzite Member of Skookum Formation 53 400MRDG Martin Ridge Schist 53 400MRSL Marshall Diorite 53 400NONM No Name Argillite 53 400NPRT Newport Group 53 400ORNT Orient Gneiss 53 400RBBN Ribbon Gneiss 53 400SDRF Shedroof Conglomerate 53 400SKKM Skookum Formation 53 400SSGR Stensgar Dolomite of Deer Trail Group 53 400TOGO Togo Formation of Deer Trail Group 53 BASEMENT Basement 53 BEDROCK Bedrock 54 100CNZC Cenozoic Erathem 54 110QRNR Quaternary System 54 111ALVM Holocene Alluvium 54 111HLCN Holocene Series 54 200MSZC Mesozoic Erathem 54 230IRSV Intrusive Rocks 54 230TRSC Triassic System 54 300PLZC Paleozoic Erathem 54 310PRMN Permian System 54 317DKRD Dunkard Group 54 317PRMNL Lower Permian Series 54 320PSLV Pennsylvanian System 54 321CNMG Conemaugh Formation 54 321MNGL Monongahela Formation 54 321PSLVU Upper Pennsylvanian Series 54 324ALGN Allegheny Formation 54 324PSLVM Middle Pennsylvanian Series 54 327KNWH Kanawha Formation 54 327NEWR New River Formation 54 327PCNS Pocahontas Formation 54 327PSLVL Lower Pennsylvanian Series 54 327PSVL Pottsville Formation 54 330MSSP Mississippian System 54 330PRIC Price Formation 54 331BLFD Bluefield Formation 54 331BLPR Bluestone and Princeton Formations 54 331BLSN Bluestone Formation 54 331HNTN Hinton Formation 54 331MCCK Mauch Chunk Formation 54 331MSSPU Mississippian, Upper 54 332ALDR Alderson Limestone of Greenbrier Group 54 332DNMR Denmar Formation of Greenbrier Group 54 332GRVL Greenville Shale of Greenbrier Group 54 332PCKY Pickaway Limestone of Greenbrier Group 54 332TGRD Taggard Formation of Greenbrier Group 54 332UNON Union Limestone of Greenbrier Group 54 333HLDL Hillsdale Limestone of Greenbrier Group 54 334GRBR Greenbrier Limestone 54 337MCCD Maccrady Shale 54 337MSSPL Mississippian, Lower 54 337POCN Pocono Formation 54 340DVNN Devonian System 54 341BRLR Brallier Formation 54 341CMNG Chemung Formation 54 341DVNUM Upper-Middle Devonian Series 54 341HMPR Hampshire Formation 54 341HRRL Harrell Shale 54 341MRCL Marcellus Shale 54 344HUNT Huntersville Chert 54 344MNMR Mahantango and Marcellus Formations 54 344MNNG Mahantango Formation 54 344MRCL Marcellus Shale 54 344NDMR Needmore Shale 54 344NHNN Needmore and Huntersville and Onondaga and Onesquethaw Formations 54 344ONDG Onondaga Limestone 54 344SQTW Onesquethaw Formation 54 347DVNNL Devonian, Lower 54 347HDBG Helderberg Group 54 347NSCD New Scotland Limestone 54 347NWCK New Creek Formation 54 347ORSK Oriskany Formation 54 347SRVR Shriver Chert 54 350SLRN Silurian System 54 351SLRNU Silurian, Upper 54 351TNLY Tonoloway Limestone 54 351TNWL Tonoloway and Wills Creek Formations 54 351WLCK Wills Creek Formation 54 351WLMP Williamsport Sandstone 54 354CLNN Clinton Formation 54 354MCKZ Mc Kenzie Formation 54 354RKRH Rochester and Keefer and Rose Hill Formations 54 354RSHL Rose Hill Formation 54 354SLRNM Silurian, Middle 54 357SLRNL Silurian, Lower 54 357TCRR Tuscarora Sandstone 54 360ODVC Ordovician System 54 361JOSG Juniata and Oswego 54 361JUNT Juniata Formation 54 361MRBG Martinsburg Shale 54 361ODVCU Ordovician, Upper 54 364CABB Chambersburg Limestone 54 364NMRK New Market Limestone 54 364ODVCM Ordovician, Middle 54 364STPL St Paul Group 54 364TRNN Trenton Limestone 54 365BKRV Black River Formation 54 367BKMN Beekmantown Group 54 367KNOX Knox Dolomite 54 367ODVCL Ordovician, Lower 54 367PBGS Pinesburg Station Dolomite 54 367RCKR Rockdale Run Formation 54 367SNNG Stonehenge Formation 54 370CMBR Cambrian System 54 371CCCGG Conococheague Group 54 371CMBRU Cambrian, Upper 54 374CMBRM Cambrian, Middle 54 374ELBK Elbrook Formation 54 377ANTM Antietam Formation 54 377CHLH Chilhowee Group 54 377CMBRL Lower Cambrian Series 54 377CTSW Catoctin and Swift Run Formations 54 377HRWV Harpers and Weverton Formations 54 377TMSN Tomstown Dolomite 54 377WSBR Waynesboro Formation 54 400CTCN Catoctin Formation 54 400PCMB Precambrian Erathem 54 400SWFT Swift Run Formation 54 BASEMENT Basement 54 BEDROCK Bedrock 55 100CNZC Cenozoic Erathem 55 100SDGV Sand and Gravel Aquifer 55 110CLAY Clay (Holocene and/or Pleistocene) 55 110EOLI Eolian Deposits 55 110GRAV Gravel (Holocene and/or Pleistocene) 55 110GVCL Gravel and Clay (Holocene and/or Pleistocene) 55 110HRDP Hardpan (Holocene and/or Pleistocene) 55 110MARL Marl (Holocene and/or Pleistocene) 55 110PEAT Peat (Holocene and/or Pleistocene) 55 110QRNR Quaternary System 55 110SANDP Sand (Holocene and/or Pleistocene) 55 110SDCL Sand Clay (Holocene and/or Pleistocene) 55 110SDGVP Sand and Gravel (Holocene and/or Pleistocene) 55 110SGVC Sand, Gravel, and Clay (Holocene and/or Pleistocene) 55 110SILT Silt (Holocene and/or Pleistocene) 55 111ALVM Holocene Alluvium 55 111FILL Fill 55 111HLCN Holocene Series 55 111SOIL Soil 55 112BDWD Buried Waterlaid Deposits 55 112BUDC Buried Channel Deposits 55 112DFUD Drift, Unsorted 55 112ICCC Ice-Contact Deposits, Pleistocene 55 112LCSR Lacustrine Deposits 55 112OTSH Outwash 55 112PLSC Pleistocene Series 55 112TILL Till 55 112VLTR Valley Trains, Pleistocene 55 300NEDA Neda Formation 55 300PLZC Paleozoic Erathem 55 300SDSL Sandstone-Silurian Dolomite Aquifer 55 300SNDSA Sandstone Aquifer 55 300SODV Silurian-Ordovician Systems 55 340DVNN Devonian System 55 341ANRM Antrim Shale 55 341DVNNU Devonian, Upper 55 341KNWD Kenwood Formation 55 344DVNNM Devonian, Middle 55 344LKCC Lake Church Formation 55 344MLWK Milwaukee Formation 55 344TSVL Thiensville Formation 55 347DVSL Devonian-Silurian Systems 55 350SLDL Silurian Dolomite Aquifer 55 350SLRN Silurian System 55 352CYGN Cayugan Series 55 352WUBK Waubakee Formation 55 354WKSA Waukesha Formation 55 355BBLF Burnt Bluff Group 55 355BYRN Byron Dolomite 55 355CRDL Cordell Dolomite 55 355HDCK Hendricks Dolomite 55 355MASQ Manistique Formation 55 355MNSQ Manistique Dolomite 55 355NGRN Niagaran Series 55 355RCIN Racine Formation 55 355SCCF Schoolcraft Dolomite 55 358ALXD Alexandrian Series 55 358MVLL Mayville Limestone 55 360ODVC Ordovician System 55 362BRAD Brainard Member of Maquoketa Shale 55 362CNCN Cincinnatian Series 55 362FOAK Fort Atkinson Limestone Member of Maquoketa Shale 55 362MQKS Maquoketa Shale 55 362MQKTG Maquoketa Group 55 362SCLS Scales Member of Maquoketa Shale 55 365ANCL Ancell Group 55 365CMPL Champlainian Series 55 365DCRH Decorah Formation 55 365DUBQ Dubuque Member of Galena Dolomite 55 365DUNL Dunleith Member of Galena Dolomite 55 365GAPV Galena-Platteville Aquifer 55 365GLEN Galena Formation 55 365GLND Glenwood Formation 55 365GUBG Guttenberg Limestone Member of Decorah Formation 55 365MCGG Mcgregor Member of Platteville Formation 55 365PCNC Pecatonica Dolomite Member of Platteville Formation 55 365PLVL Platteville Formation 55 365QUBM Quimbys Mill Member of Platteville Formation 55 365RDSN Readstown Member of St. Peter Sandstone 55 365SNNP Sinnipee Group 55 365SPEF Spechts Ferry Shale Member of Decorah Formation 55 365STPR St. Peter Sandstone 55 365TONT Tonti Member of St. Peter Sandstone 55 365WILK Wise Lake Member of Galena Dolomite 55 367KNKK Kankakee Formation 55 367OVCB Ordovician-Cambrian Systems 55 368CNDN Canadian Series 55 368GENO Genoa Member of Oneota Dolomite 55 368HKRG Hickory Ridge Member of Oneota Dolomite 55 368MDRG Mound Ridge Member of Oneota Dolomite 55 368NERM New Richmond Member of Shakopee Formation 55 368ONOT Oneota Dolomite 55 368PRDC Prairie Du Chien Group 55 368SDRD Stoddard Member of Oneota Dolomite 55 368SHKP Shakopee Formation 55 368WLRV Willow River Dolomite Member of Shakopee Formation 55 370CMBR Cambrian System 55 372BCKE Black Earth Member of St. Lawrence Formation 55 372BRKM Birkmose Member of Lone Rock Formation 55 372CNVL Coon Valley Member of the Jordan Formation 55 372DRBC Dresbach Group 55 372ECLR Eau Claire Formation 55 372EKMD Elk Mound Group 55 372FRAC Franconia Sandstone 55 372GALV Galesville Member of Wonewoc Formation 55 372IRNN Ironton Member of Wonewoc Formation 55 372JRDN Jordan Sandstone 55 372LODI Lodi Member of St. Lawrence Formation 55 372LRCK Lone Rock Formation 55 372MNSN Mount Simon Sandstone 55 372MZMN Mazomanie Formation 55 372NRLK Norwalk Member of Jordan Formation 55 372RENO Reno Member of Mazomanie Formation 55 372SCRX St. Croixan Series 55 372SLRC St. Lawrence Formation 55 372SNSP Sunset Point Member of Jordan Formation 55 372TNLC Tunnel City Group 55 372TOMH Tomah Member of Mazomanie Formation 55 372TRMP Trempealeau Formation 55 372VOSR Van Oser Member of Jordan Formation 55 372WNWC Wonewoc Formation 55 372WUKN Waukon Member of the Jordan Formation 55 400ALDZ Altered or Weathered Zone 55 400BCPXA Basement Complex Aquifer 55 400BRBO Baraboo Formation 55 400CGLM Conglomerate 55 400DORT Diorite 55 400EXIG Extrusive Igneous Rock 55 400FLSC Felsic Rocks 55 400GBBR Gabbro 55 400GNSS Gneiss 55 400GRNS Greenstone 55 400GRNT Precambrian Granite 55 400GRSC Greenstone Schist 55 400IRON Iron-Formation 55 400MFIC Mafic Rocks 55 400MIVI Metamorphic or Intrusive Igneous Rock 55 400PCMB Precambrian Erathem 55 400PFGL Parfrey's Glen Formation 55 400QRTZ Quartzite 55 400RYLT Rhyolite 55 400SLTE Slate 55 400SMMM Sedimentary or Metasedimentary Rocks 55 420 Precambrian Precambrian Y 55 420BFLD Bayfield Group 55 420CEQG Chequamegon Formation of Bayfield Group 55 420CPHB Copper Harbor Conglomerate 55 420CQMG Chequamegon Sandstone 55 420DEVI Devils Island Formation of Bayfield Group 55 420DVID Devils Island Sandstone 55 420FRDA Freda Formation of Oronto Group 55 420FRED Freda Sandstone 55 420KWNN Keweenawan Supergroup 55 420LASS Lake Superior Sedimentary Rock 55 420LKSS Lake Superior Sandstone Aquifer 55 420LVFL Lava Flow Aquifer 55 420NNSC Nonesuch Shale 55 420NOSC Nonesuch Formation of Oronto Group 55 420ORNT Orienta Formation 55 420ORON Oronto Group 55 BASEMENT Basement 55 BEDROCK Bedrock 56 100CNZC Cenozoic Erathem 56 110QRNR Quaternary System 56 111ALVM Holocene Alluvium 56 111EOLN Eolian Deposits 56 111FILL Fill 56 111HLCN Holocene Series 56 111HTML Hydrothermal Deposits 56 111KYCE Kaycee Formation 56 111LCTN Lacustrine Deposits 56 111LDLD Landslide Deposits 56 111LGNG Lighting Formation 56 111SNDD Sand Dune Deposits 56 111SPOL Spoil 56 111TRRC Terrace Deposits 56 111UCRS Ucross Formation 56 112ARVD Arvada Formation 56 112BLKO Bull Lake Outwash 56 112BLLK Bull Lake Drift 56 112BSLT Basalt 56 112CDRG Cedar Ridge Till 56 112DDLK Dinwoody Lake Till 56 112EOLN Eolian Deposits 56 112FNPS Fenton Pass Formation 56 112GCLO Glacial Outwash 56 112GLCL Glacial Deposits 56 112LIDY Leidy Formation 56 112LVCK Lava Creek Tuff 56 112PDLO Pinedale Outwash 56 112PLSC Pleistocene Series 56 112PNDL Pinedale Drift 56 112RYLT Rhyolite Flows 56 112SCGR Sacagewea Ridge Till 56 112SDRY Sedimentary Rocks 56 112TRRC Terrace Deposits 56 112YLSN Yellowstone Group 56 120BSLT Basalt 56 120EXTV Extrusive Rock 56 120IRSV Intrusive Rocks 56 120TRTR Tertiary System 56 121BGLC Burnt Gulch Conglomerate 56 121CCRK Conant Creek Tuff 56 121CNYN Canyon Basalt 56 121GLCL Glacial Deposits 56 121GSBR Gooseberry Member of Fowkes Formation 56 121HKBR Huckleberry Ridge Tuff 56 121OGLL Ogallala Formation 56 121PLCN Pliocene Series 56 121SGIR Shooting Iron Formation 56 121SLLK Salt Lake Formation 56 121SPNB Spoon Butte Beds 56 122ARKR Arikaree Formation 56 122BRPK Browns Park Formation 56 122CLDC Caldwell Canyon Volcanics 56 122CLTR Colter Formation 56 122CPDV Camp Davis Formation 56 122MNSN Moonstone Formation 56 122MOCN Miocene Series 56 122NRPK North Park Formation 56 122SRMN Sherman Diorite 56 122TWNT Teewinot Formation 56 123BGSD Big Sand Draw Sandstone Lentil of White River Formation 56 123BRUL Brule Formation of White River Group 56 123BSHP Bishop Conglomerate 56 123BVDV Beaver Divide Conglomerate Member of White River Formation 56 123CDRN Chadron Formation of White River Group 56 123HCRK Hat Creek Beds 56 123OLGC Oligocene Series 56 123STTR Sweetwater Member of White River Formation 56 123TMNM Tateman Mountain Gravel 56 123WIRV White River Formation or Group 56 123YODR Yoder Formation 56 124ABRK Absaroka Volcanic Supergroup 56 124ACRS Aycross Formation 56 124AKCK Alkali Creek Stratum of Wind River Formation 56 124AKCT Alkali Creek Tongue of Wasatch Formation 56 124ANGL Angelo Member of Green River Formation 56 124BDGH Bulldog Hollow Member of Fowkes Formation 56 124BKFK Blacks Fork Member of Bridger Formation 56 124BKRK Black Rock Coal Group 56 124BLPN Bullpen Member of Wasatch Formation 56 124BRDG Bridger Formation 56 124BRFK Burnt Fork White Layer 56 124BSHL Bates Hole Formation 56 124BSPG Battle Spring Formation 56 124CDBF Cathedral Bluffs Tongue of Wasatch Formation 56 124CDDR Cottonwood Draw Banded Layers of Wind River Formation 56 124CHPP Chappo Member of Wasatch Formation 56 124CKGP Crooks Gap Conglomerate 56 124CLCK Clear Creek Gravels 56 124CLMN Coalmont Formation 56 124CLPK Continental Peak Formation 56 124CNDW Cottonwood White Layers 56 124EOCN Eocene Series 56 124FRSO Farson Sandstone Member of Green River Formation 56 124FSLB Fossil Butte Member of Green River Formation 56 124FWKS Fowkes Formation 56 124GRCV Green Cove Beds 56 124GRNN Greenian Series 56 124GRRV Green River Formation 56 124HANN Hanna Formation 56 124HRRC Henry Ranch Member of Tepee Trail Formation 56 124HWTH Hiawatha Member of Wasatch Formation 56 124KGBR Kingsbury Conglomerate Member of Wasatch Formation 56 124LBRG La Barge Member of Wasatch Formation 56 124LNEY Laney Shale Member of Green River Formation 56 124LSCB Lost Cabin Member of Wind River Formation 56 124LTGC Lone Tree Gulch Ash 56 124LUMN Luman Tongue of Green River Formation 56 124LYST Lysite Member of Wind River Formation 56 124MCRF Moncrief Member of Wasatch Formation 56 124NBRG Newberger Sand (Subsurface) 56 124NLND Niland Tongue of Wasatch Formation 56 124PCFK Pitchfork Formation 56 124PSPK Pass Peak Conglomerate 56 124RDDR Red Desert Tongue of Wasatch Formation 56 124RMSR Ramshorn Volcanic Series 56 124SLLM Sillem Member of Fowkes Formation 56 124TNBS Twin Buttes Member of Bridger Formation 56 124TPTL Tepee Trail Formation 56 124TPTN Tipton Shale Member of Green River Formation 56 124TTMN Tatman Formation 56 124TUNP Tunp Member of Wasatch Formation 56 124UINT Uinta Formation 56 124ULM Ulm Coal Group of Wasatch Formation 56 124WDRV Wind River Formation 56 124WGBD Wagon Bed Formation 56 124WGND Wagonhound Member of Uinta Formation 56 124WGNS Wiggins Formation 56 124WKPK Wilkins Peak Member of Green River Formation 56 124WLWD Willwood Formation 56 124WSHK Washakie Formation 56 124WSTC Wasatch Formation 56 125EVNS Evanston Formation 56 125FRRS Ferris Formation 56 125FRUN Fort Union Formation 56 125HBCK Hoback Formation 56 125LEBO Lebo Member of Fort Union Formation 56 125MNTU Mantua Lentil of Polecat Bench Formation 56 125PCBC Polecat Bench Formation 56 125PLCN Paleocene Series 56 125PNYN Pinyon Conglomerate 56 125RKBQ Rock Bench Quarry Beds of Polecat Bench Formation 56 125SLVC Silver Coulee Beds of Polecat Bench Formation 56 125STGN Shotgun Member of Fort Union Formation 56 125TGRV Tongue River Member of Fort Union Formation 56 125TULK Tullock Member of Fort Union Formation 56 125WLMN Waltman Shale Member of Fort Union Formation 56 200MSZC Mesozoic Erathem 56 210CRCS Cretaceous System 56 210SOHR Sohare Formation 56 211ADVL Adaville Formation 56 211ALMD Almond Formation of Mesaverde Group 56 211ARDG Allen Ridge Formation of Mesaverde Group 56 211ASPN Aspen Shale 56 211BCKB Black Buttes Coal Group 56 211BCRG Bacon Ridge Sandstone 56 211BEFCS Belle Fourche Shale Member of Graneros Shale 56 211BLDB Blind Bull Formation 56 211BLIR Blair Formation of Mesaverde Group 56 211BOW Bow Formation or Group 56 211BSIN Basin Shale 56 211BXTR Baxter Shale 56 211CLGG Claggett Shale of the Montana Group 56 211CLSP Clay Spur Bentonite Bed of Mowry Shale 56 211CMRK Chimney Rock Tongue of Blair Formation 56 211CODY Cody Shale 56 211CRCSU Upper Cretaceous Series 56 211CRLL Carlile Shale 56 211DKOT Dakota Sandstone or Formation 56 211EGLE Eagle Sandstone 56 211ELKB Elk Basin Sandstone Member of Telegraph Creek Formation 56 211ERCS Ericson Sandstone or Formation of Mesaverde Group 56 211EVRS Everts Formation 56 211FRNR Frontier Formation 56 211FTZG Fitzhugh Sand (Subsurface) 56 211FXHL Fox Hills Formation 56 211GMMN Gammon Ferruginous Member of Pierre Shale 56 211GRER Greenhorn Limestone 56 211GRRS Graneros Shale 56 211HCKM Haystack Mountains Formation of Mesaverde Group 56 211HILY Hailey Shale 56 211HLRD Hilliard Shale or Formation 56 211HMFK Hams Fork Conglomerate Member of Evanston Formation 56 211HRBL Harebell Formation 56 211HYGN Hygiene Sandstone Member of Pierre Shale 56 211ILES Iles Formation 56 211KARA Kara Bentonitic Member of Pierre Shale 56 211KBCK Knobs-Cherokee Coal Group 56 211KMBL Kimball Sand (Subsurface) 56 211LDCK Landslide Creek Formation 56 211LNCE Lance Formation 56 211LRMI Laramie Formation 56 211LWIS Lewis Shale 56 211LZRT Lazeart Sandstone Member of Adaville Formation 56 211MDCB Medicine Bow Formation 56 211MEVD Mesaverde Formation or Group 56 211MMHL Monument Hill Bentonitic Member of Pierre Shale 56 211MNCS Mancos Shale 56 211MTTN Mitten Black Shale Member of Pierre Shale 56 211MTTS Meeteetse Formation 56 211MWRY Mowry Shale 56 211NBRR Niobrara Formation 56 211OCTL Octh Louie Sand (Subsurface) 56 211ORDG Oyster Ridge Sandstone Member of Frontier Formation 56 211PDRO Pedro Bentonite Bed of Pierre Shale 56 211PEAY Peay Sandstone Member of Frontier Formation 56 211PINY Piney Formation 56 211PIRR Pierre Shale 56 211PLCK Pool Creek Shale Member of Carlile Shale 56 211PRDG Pine Ridge Sandstone of Mesaverde Group 56 211PRKM Parkman Sandstone of Montana Group 56 211QULY Quealy Formation 56 211RDBD Red Bird Silty Member of Pierre Shale 56 211RKSP Rock Springs Formation of Mesaverde Group 56 211RLNS Rawlins Sandstone 56 211SNNN Shannon Sandstone Member of Cody Shale 56 211SSSX Sussex Sandstone Member of Cody Shale 56 211STEL Steele Shale 56 211TCLG Torchlight Sandstone Member of Frontier Formation 56 211TPCK Telegraph Creek Formation 56 211TPOT Teapot Sandstone Member of Mesaverde Formation 56 211TRNG Torrington Member of Lance Formation 56 211TRNR Turner Sandy Member of Carlile Shale 56 211WLCK Wall Creek Sandstone Member of Frontier Formation 56 217BECL Bechler Conglomerate of Gannett Group 56 217BRDD Birdhead Sandstone Member of Cloverly Formation 56 217BRRT Barrett Shale 56 217BRRV Bear River Formation 56 217CKVL Cokeville Formation 56 217CLSN Chilson Member of Lakota Formation 56 217CLVL Cloverly Formation 56 217CRCSL Lower Cretaceous Series 56 217DRNY Draney Limestone of Gannett Group 56 217EPRM Ephraim Conglomerate of Gannett Group 56 217FLRV Fall River Formation 56 217FUSN Fuson Member of Lakota Formation 56 217GNNT Gannett Group 56 217GRBL Greybull Sandstone Member of Cloverly Formation 56 217HCRK Hay Creek Formation 56 217INKR Inyan Kara Group 56 217KYHL Keyhole Sandstone Member of Fall River Formation 56 217LKOT Lakota Formation 56 217MDDY Muddy Sandstone Member of Thermopolis Shale 56 217MNST Minnewaste Limestone Member of Lakota Formation 56 217NCSL Newcastle Sandstone 56 217PRSN Peterson Limestone of Gannett Group 56 217QULY Quealy Formation 56 217SBLT Sublette Formation 56 217SGJC Sage Junction Formation 56 217SKCK Skull Creek Shale 56 217SMTS Smiths Formation 56 217TMFK Thomas Fork Formation 56 217TMPL Thermopolis Shale 56 220JRSC Jurassic System 56 221CRML Carmel Formation of San Rafael Group 56 221CRTS Curtis Formation of San Rafael Group 56 221CSPGS Canyon Springs Sandstone Member of Sundance Formation 56 221HLTT Hulett Sandstone Member of Sundance Formation 56 221JRSCU Upper Jurassic Series 56 221LAK Lak Member of Sundance Formation 56 221MRSN Morrison Formation 56 221SKBV Stockade Beaver Shale Member of Sundance Formation 56 221SNDC Sundance Formation 56 221STMP Stump Sandstone 56 221SWIF Swift Formation of Ellis Group 56 221TCRK Twin Creek Limestone or Formation 56 224GPSP Gypsum Spring Formation 56 224JRSCM Middle Jurassic Series 56 224PRSS Preuss Sandstone or Redbeds 56 224RRDN Rierdon Formation of Ellis Group 56 224STTH Sawtooth Formation of Ellis Group 56 227JRSCL Lower Jurassic Series 56 227NGGT Nugget Sandstone 56 230ALCV Alcova Limestone Member of Chugwater Formation 56 230CGTRG Chugwater Formation or Group 56 230CRMN Crow Mountain Sandstone Member of Chugwater Formation 56 230GSEG Goose Egg Formation 56 230RDPK Red Peak Member of Chugwater Formation 56 230TRSC Triassic System 56 231ANKR Ankareh Shale, Formation, or Redbeds 56 231JELM Jelm Formation 56 231PPAG Popo Agie Member of Chugwater Formation 56 231TRSCU Upper Triassic Series 56 231WYOP Wyopo Formation 56 237DNDY Dinwoody Formation 56 237ERVY Ervay Member of Goose Egg Formation 56 237FRZT Freezeout Shale Member of Goose Egg Formation 56 237LMDC Little Medicine Member of Goose Egg Formation 56 237SPRF Spearfish Formation 56 237TRSCL Lower Triassic Series 56 237TYNS Thaynes Limestone, Formation or Group 56 237WDSD Woodside Formation, Siltstone and/or Redbeds 56 300PLZC Paleozoic Erathem 56 310FRNS Franson Member or Tongue of Park City Formation 56 310GPKC Grandeur Member or Tongue of Park City Formation 56 310MDPK Meade Peak Phosphatic Shale Member or Tongue of Phosphoria Formation 56 310MNKT Minnekahta Limestone 56 310MNLS Minnelusa Formation (Permian andPennsylvanian) 56 310PRKC Park City Formation or Group 56 310PRMN Permian System 56 310PSPR Phosphoria Formation 56 310REX Retort Phosphatic Shale Member or Tongue of Phosphoria Formation 56 310RPHP Retort Phosphatic Shale Member of Phosphoria Formation 56 310RXPP Rex Chert Member of Phosphoria Formation 56 310SDRN Shedhorn Sandstone 56 310TOSI Tosi Chert Member or Tongue of Phosphoria Formation 56 311DFCL Difficulty Shale Member of Goose Egg Formation 56 311FRLL Forelle Limestone 56 311FRZT Freezeout Tongue of Chugwater Formation 56 311GLED Glendo Shale Member of Goose Egg Formation 56 311PRMNU Upper Permian Series 56 317CSPR Casper Formation 56 317CVRS Converse Sandstone Bed of Hartville Formation 56 317FNTN Fountain Formation 56 317HRVL Hartville Formation 56 317IGLD Ingleside Formation 56 317MRON Maroon Formation 56 317OPCH Opeche Shale 56 317PPSP Pope Springs Sandstone 56 317PRMNL Lower Permian Series 56 317SBLL Sybille Tongue of Phosphoria Formation 56 317STNK Satanka Shale 56 317TOSI Tosi Chert Member or Tongue of Phosphoria Formation 56 317TSLP Tensleep Sandstone 56 317WLLS Wells Formation 56 320AMSD Amsden Formation 56 320DRWN Darwin Sandstone Member of Amsden Formation 56 320PSLV Pennsylvanian System 56 320QDRN Quadrant Quartzite or Formation 56 324MRGN Morgan Formation 56 324PSLVM Middle Pennsylvanian Series 56 327BELL Bell Sand (Subsurface) 56 327PSLVL Lower Pennsylvanian Series 56 327RDVL Round Valley Limestone 56 330EGED Englewood Formation (Mississippian and Devonian) 56 330MSSP Mississippian System 56 331MDSN Madison Group (Upper and Lower Mississippian) 56 331MSNC Mission Canyon Limestone 56 331MSSPU Mississippian, Upper 56 337GRNS Guernsey Formation 56 337LOGP Lodgepole Limestone 56 337MSSPL Mississippian, Lower 56 337PHSP Pahasapa Limestone 56 340DVNN Devonian System 56 341DRBY Darby Formation 56 341DVNNU Devonian, Upper 56 341TRFK Three Forks Shale 56 344BRTB Beartooth Butte Formation 56 344JEFR Jefferson Formation 56 347DVNNL Devonian, Lower 56 350LKTN Laketown Dolomite 56 360DDWD Deadwood Formation 56 360ODVC Ordovician System 56 361BGRN Bighorn Dolomite 56 361LIGH Leigh Dolomite Member of Bighorn Dolomite 56 361LNDR Lander Sandstone Member of Bighorn Dolomite 56 361ODVCU Ordovician, Upper 56 361RDRV Red River Formation 56 361SNMN Stony Mountain Formation 56 361WHTD Whitewood Dolomite 56 364ALDN Aladdin Sandstone Member of Winnipeg Formation 56 364ICBX Icebox Shale Member of Winnipeg Formation 56 364ODVCM Ordovician, Middle 56 364ROGK Roughlock Siltstone Member of Winnipeg Formation 56 364WNPG Winnipeg Formation 56 367ODVCL Ordovician, Lower 56 370BKSP Buck Spring Formation 56 370CMBR Cambrian System 56 371BYSN Boysen Formation 56 371CMBRU Cambrian, Upper 56 371GLTN Gallatin Limestone or Formation 56 371OPDR Open Door Limestone 56 371PLGM Pilgrim Limestone 56 371SNRG Snowy Range Formation 56 374CMBRM Cambrian, Middle 56 374DCNN Death Canyon Member of Gros Ventre Formation 56 374DPSS Depass Formation 56 374FLTD Flathead Quartzite or Sandstone 56 374GRVR Gros Ventre Formation 56 374MGHR Meagher Limestone 56 374PARK Park Shale 56 374WLSY Wolsey Shale or Formation 56 400PCMB Precambrian Erathem 56 BASEMENT Basement 56 BEDROCK Bedrock 60 100CLRB Coralline Rubble Deposits 60 100CNZC Cenozoic Erathem 60 100LMSN Limestone 60 110QRNR Quaternary System 60 111ALVM Holocene Alluvium 60 111ALVT Alluvial and Talus Deposits 60 111AUNU Aunuu Tuff 60 111BECH Beach Deposits 60 111CSRB Calcareous Sand and Rubble Deposits 60 111LEON Leone Volcanics, Undifferentiated 60 111LNAS Leone Volcanics, Ash Deposits 60 111LNCC Leone Volcanics, Cinder Cones 60 111LNLF Leone Volcanics, Lava Flows 60 111LNTF Leone Volcanics, Tuff Deposits 60 111OFTF Ofu Volcanic Rocks, Tuff Deposits 60 111SWMP Swamp Deposits 60 111TULF Tua Volcanic Rocks, Lava Flows 60 111TUTF Tua Volcanic Rocks, Tuff Deposits 60 112AFON Afono Trachyte 60 112LEIL Leila Trachyte 60 112LFLF Lefulufulua Trachyte 60 112MTFO Matafao Trachyte 60 112OFLF Ofu Volcanic Rock, Lava Flows 60 112OGLF Olosega Volcanic Rock, Lava Flows 60 112PIOA Pioa Trachyte 60 112PLSC Pleistocene Series 60 112PPTL Papatele Trachyte 60 112TAU Tau Trachyte 60 112VATI Vatia Trachyte 60 120TRTR Tertiary System 60 121ALFU Alofau Volcanics, Undifferentiated 60 121MSFU Masefau Dike Complex 60 121OLMN Olomoana Volcanics, Undifferentiated 60 121PAGOE Pago Volcanic Series, Extra-Caldera Volcanics, Undifferentiated 60 121PAGOI Pago Volcanic Series, Intra-Caldera Volcanics, Undifferentiated 60 121PLCN Pliocene Series 60 121TPTP Taputapu Volcanics, Undifferentiated, Lava Flows, Tuff and Cinder Cone 60 BASEMENT Basement 60 BEDROCK Bedrock 66 100LMSN Limestone 66 100VLCC Volcanic Rocks 68 100CLRB Coralline Rubble Deposits 71 100CLRB Coralline Rubble Deposits 71 100CNZC Cenozoic Erathem 71 100LMSN Limestone 71 111BECH Beach Deposits 71 BASEMENT Basement 71 BEDROCK Bedrock 72 100ALVT Alluvium and Talus 72 100CNZC Cenozoic Erathem 72 110CEBP Coastal Embayment Aquifers, Puerto Rico 72 110CGJV Caguas-Juncos Valley Alluvial Aquifer 72 110CYVL Cayey Valley Alluvial Aquifer 72 110EPRZ Esperanza Alluvial Aquifer 72 110GUNC Guanica Alluvial Aquifer 72 110GYNL Guayanilla Alluvial Aquifer 72 110HNGB Humacao-Naguabo Alluvial Aquifer 72 110LJVL Lajas Vallay 72 110MUNB Maunabo Alluvial Aquifer 72 110QRNR Quaternary System 72 110RCBV Rio Culebrinas Valley Aquifer 72 110RGAV Rio Grande De Anasco Valley Alluvial Aquifer 72 110RGJV Rio Guanajibo Valley Aquifer 72 110RSRD Rio Espiritu Santo To Rio Demajagua Alluvial Valley Aquifers 72 110RYZV Rio Yaguez Valley Alluvial Aquifer 72 110SCPL South Coastal Plain Alluvial Aquifer 72 110TLLB Tallaboa Alluvial Aquifer 72 110YBCV Yabucoa Valley Alluvial Aquifer 72 110YCVL Yauco Valley Alluvial Aquifer 72 111AVMC Alluvium, Coastal 72 111AVMV Alluvium, Valley 72 111HLCN Holocene Series 72 111VLAV Valley Alluvium 72 120TRTR Tertiary System 72 122AGUD Aguada Limestone 72 122ALMS Almirante Sur Sand Lentil of Cibao Formation 72 122AMMN Aymamon Limestone 72 122CIBO Cibao Formation 72 122CMUY Camuy Limestone 72 122GJTC Guajataca Member of Cibao Formation 72 122ISLM Isla Mona Dolomite (Mono Island) 72 122JNDZ Juana Diaz Formation 72 122LIRO Lirio Limestone (Mono Island) 72 122MCOG Miocene-Oligocene Series 72 122MCRB Mucarabones Sand 72 122MNBL Montebello Limestone Member of Cibao Formation 72 122MOCN Miocene Series 72 122NRCSL North Coast Limestone Aquifer, Lower 72 122NRCSU North Coast Limestone Aquifer, Upper 72 122PONC Ponce Limestone 72 122QBDA Quebrada Arenas Limestone Member of Cibao Formation 72 122RIND Rio Indio Limestone Member of Cibao Formation 72 122UPPR Upper Member of Cibao Formation 72 123LRES Lares Limestone of Rio Guatemala Group 72 123OLGC Oligocene Series 72 123SSBS San Sabastian Formation of Rio Guatemala Group 72 124EOCN Eocene Series 72 124PLNC Plutonic Rocks, Including Dioritic Rocks and Intrusives 72 124RPDR Rio Piedras Siltstone 72 124VOLCD Volcanic Rocks, Including Limestone and Detrital Material 72 210BJUR Bajura Limestone Aquifer 72 210VLCC Volcanic Rocks Aquifer 72 BASEMENT Basement 72 BEDROCK Bedrock 77 111HLCN Holocene Series 77 112AGAN Agana Argillaceous Member of Mariana Limestone 77 BASEMENT Basement 77 BEDROCK Bedrock 78 100CNZC Cenozoic Erathem 78 110CEBV Coastal Embayment Aquifers, Virgin Islands 78 110QRNR Quaternary System 78 111ALVM Holocene Alluvium 78 111HLCN Holocene Series 78 120IRSV Intrusive Rocks 78 120IVVC Intrusive Volcanics (Includes Diorite) 78 120TRTR Tertiary System 78 121KGSLA Kingshill Aquifer 78 122KGSL Kingshill Marl 78 122MOCN Miocene Series 78 123JLSY Jealousy Formation 78 123OLGC Oligocene Series 78 200MSZC Mesozoic Erathem 78 210CRCS Cretaceous System 78 210VLCC Volcanic Rocks Aquifer 78 211CRCSU Upper Cretaceous Series 78 211LSNJ Luisenhoj Formation 78 211MEGL Mount Eagle Group 78 211ORBR Outer Brass Limestone 78 211TUTU Tutu Formation 78 217CRCSL Lower Cretaceous Series 78 217WILD Water Island Formation 78 BASEMENT Basement 78 BEDROCK Bedrock 96 112EVRS Everson Interstade of Fraser Glaciation 96 112GLCV Glacio-Fluviatile 96 112SUMS Sumas Drift of Fraser Glaciation