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all geography including DSDP/ODP Sites and Legs
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Africa
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Central Africa
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Angola (3)
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Congo (2)
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Congo River (1)
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East Africa
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Zambia (1)
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Atlas Mountains
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Egypt (2)
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Southern Africa
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West Africa
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Canada
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Newfoundland and Labrador
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Ontario
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Quebec
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Western Canada
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British Columbia
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Northwest Territories
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Saskatchewan (38)
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Cape Ann (1)
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Caribbean region
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Antilles
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Central Basin (6)
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Orenburg Russian Federation (1)
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Russian Arctic
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Siberian Platform
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Sverdlovsk Russian Federation
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Ukraine
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South Dakota
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Terlingua Texas (3)
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Briscoe County Texas (4)
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Callahan County Texas (2)
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Dalhart Basin (7)
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Davis Mountains (9)
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Edwards Aquifer (8)
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Ellis County Texas (4)
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Quitman Mountains (2)
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
-
Llano Uplift (30)
-
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-
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Lubbock Lake (3)
-
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-
-
Lynn County Texas (6)
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-
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-
-
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-
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-
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Potter County Texas
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-
-
Presidio County Texas (23)
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-
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-
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-
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-
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-
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-
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-
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-
-
Taylor County Texas
-
Abilene Texas (1)
-
-
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-
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-
-
Trinity Aquifer (3)
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-
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Tombigbee River (1)
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Western U.S. (40)
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elements, isotopes
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boron
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alkali metals
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calcium
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radium (1)
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lead
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Pb-206/Pb-204 (11)
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nitrogen
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noble gases
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Ar-40/Ar-36 (2)
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helium
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He-4/He-3 (5)
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krypton (1)
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neon
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Ne-20 (1)
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radon
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Rn-222 (2)
-
-
-
oxygen
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dissolved oxygen (1)
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O-16 (1)
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O-17/O-16 (1)
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O-18 (4)
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O-18/O-16 (188)
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phosphorus (10)
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selenium (6)
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silicon (7)
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organic sulfur (2)
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S-33/S-32 (2)
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S-34 (1)
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S-34/S-32 (53)
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trace metals (12)
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fossils
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bacteria
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borings (40)
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Aves
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Mammalia
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Primates
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Prosimii
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Proboscidea
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Mastodontoidea
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Rodentia
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Reptilia
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Diapsida
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dinosaurs
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Ornithopoda
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Saurischia
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Theropoda
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Tyrannosaurus
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Tyrannosaurus rex (3)
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Pterosauria
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Pteranodon (2)
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Rhynchosauria (1)
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Synapsida
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Testudinata (1)
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coprolites (14)
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cyanobacteria
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Renalcis (1)
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ichnofossils
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Invertebrata
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Mandibulata
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Cirripedia (8)
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Cavellinidae (1)
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Cypridocopina
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Cytherocopina
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-
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Platycopida
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Cytherellidae
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Insecta
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Neoptera
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Exopterygota
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Palaeoptera (1)
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Myriapoda (2)
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Brachiopoda
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Articulata
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Inarticulata (4)
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Cnidaria
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Scleractinia (2)
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Favositida
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Favositidae
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Favosites (2)
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-
-
-
-
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Hydrozoa (2)
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Scyphozoa
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Conulariida (6)
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Echinodermata
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Asterozoa
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Stelleroidea
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Crinozoa
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Crinoidea
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Inadunata
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Cystoidea (3)
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Echinozoa
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Homalozoa
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Mollusca
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Chione (1)
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-
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Mytilus
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Crassostrea virginica (1)
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Ostrea (1)
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Pterioida
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Inocerami
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Pectinacea (1)
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Cephalopoda
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Scaphites (5)
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Coleoidea
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Nautiloidea
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Gastropoda
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Hexactinellida (6)
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Protista
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Foraminifera
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Fusulinina
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Triticites
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Triticites ventricosus (4)
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-
-
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Miliolina
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Quinqueloculina (1)
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-
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Rotaliina
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Buliminacea
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Bolivinitidae
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Uvigerinidae
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Uvigerina
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Uvigerina peregrina (1)
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-
-
-
Globigerinacea
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Globigerinidae
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Globigerina (1)
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Globigerinoides
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Globigerinoides ruber (2)
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Globigerinoides sacculifer (2)
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Globorotaliidae
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Globotruncanidae
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Globotruncana (2)
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Hedbergella (1)
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Neogloboquadrina dutertrei (1)
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Rotalipora (5)
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Lagenidae (1)
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Orbitoidacea
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Ammonia (3)
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Elphidium
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Elphidium excavatum (1)
-
-
-
-
Textulariina
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Lituolacea
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Orbitolinidae
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Orbitolina (3)
-
-
-
-
-
Radiolaria (20)
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Thecamoeba (1)
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Tintinnidae
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-
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Vermes
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Annelida (7)
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scolecodonts (6)
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-
-
microfossils
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Charophyta
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Chitinozoa (6)
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Conodonta
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-
-
Fusulinina
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Fusulinidae
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Schwagerina (1)
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Triticites
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Triticites ventricosus (4)
-
-
-
-
problematic microfossils
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Tubiphytes (1)
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-
scolecodonts (6)
-
-
palynomorphs
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acritarchs
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Chitinozoa (6)
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Dinoflagellata
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Peridinium (1)
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megaspores (8)
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miospores
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Classopollis (2)
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pollen (45)
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Plantae
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algae
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calcareous algae (5)
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Chlorophyta
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Charophyta
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Characeae (2)
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Chlorophyceae
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diatoms (20)
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-
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Bryophyta
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Musci
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-
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Pteridophyta
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Filicopsida
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Lycopsida (5)
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Gymnospermae
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Coniferales
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Tsuga (1)
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Cordaitales
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Cordaites (1)
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Cycadales (2)
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Pteridospermae (4)
-
-
-
-
problematic fossils
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problematic microfossils
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Tubiphytes (1)
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-
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Pterobranchia (1)
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thallophytes (79)
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tracks (16)
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geochronology methods
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(U-Th)/He (5)
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exposure age (1)
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fission-track dating (12)
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tree rings (2)
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U/Pb (117)
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uranium disequilibrium (9)
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geologic age
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Cenozoic
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Blancan (8)
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middle Cenozoic (1)
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Quaternary
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Clovis (5)
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Holocene
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middle Holocene (7)
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Neoglacial
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upper Holocene
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Little Ice Age (1)
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-
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lower Quaternary (1)
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Pleistocene
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Aftonian (1)
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Bishop Tuff (2)
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Blackwater Draw Formation (8)
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Illinoian (2)
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Irvingtonian (4)
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Kansan (4)
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Lake Agassiz (22)
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Loveland Loess (3)
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lower Pleistocene (8)
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Matuyama Chron (2)
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middle Pleistocene (3)
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Pearlette Volcanic Ash (4)
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Peoria Loess (12)
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Roxana Silt (3)
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upper Pleistocene
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Rancholabrean (1)
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Sangamonian (3)
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Weichselian
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upper Weichselian
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Allerod (2)
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Bolling (1)
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Younger Dryas (6)
-
-
-
Wisconsinan
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middle Wisconsinan (1)
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upper Wisconsinan (13)
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Woodfordian (1)
-
-
-
-
upper Quaternary
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Brunhes Chron (3)
-
-
-
Stone Age
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Paleolithic (2)
-
-
Tertiary
-
Anahuac Formation (6)
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Arikaree Group (19)
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Arikareean (8)
-
Catahoula Formation (14)
-
Cypress Hills Formation (1)
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Florissant Lake Beds (1)
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John Day Formation (1)
-
lower Tertiary (17)
-
middle Tertiary (5)
-
Muddy Creek Formation (4)
-
Neogene
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Capistrano Formation (1)
-
Hemphillian (16)
-
Miocene
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Ash Hollow Formation (13)
-
Astoria Formation (1)
-
Barstovian (18)
-
Calvert Formation (1)
-
Clarendonian (13)
-
Fleming Formation (9)
-
lower Miocene
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Hemingfordian (8)
-
-
middle Miocene
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Choptank Formation (1)
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Serravallian (1)
-
-
Oakville Sandstone (5)
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Paintbrush Tuff (2)
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Saint Marys Formation (1)
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Stevens Sandstone (1)
-
upper Miocene (27)
-
Valentine Formation (11)
-
Wood Mountain Formation (1)
-
-
Ogallala Formation (38)
-
Pliocene
-
Citronelle Formation (3)
-
Goliad Sand (2)
-
lower Pliocene (9)
-
upper Pliocene
-
Rexroad Formation (4)
-
-
-
upper Neogene (2)
-
-
Paleogene
-
Calvert Bluff Formation (9)
-
Chadron Formation (10)
-
Eocene
-
Absaroka Supergroup (1)
-
Bridger Formation (1)
-
Bridgerian (1)
-
Castle Hayne Limestone (1)
-
Crystal River Formation (1)
-
Golden Valley Formation (4)
-
Green River Formation (1)
-
Jacksonian (1)
-
lower Eocene
-
Thebes Formation (1)
-
Wasatchian (1)
-
Willwood Formation (1)
-
-
middle Eocene
-
Aycross Formation (1)
-
Bartonian (4)
-
Carrizo Sand (12)
-
Claiborne Group (22)
-
Cockfield Formation (3)
-
Cook Mountain Formation (5)
-
Lisbon Formation (2)
-
Lutetian (1)
-
Queen City Formation (7)
-
Santee Limestone (1)
-
Sparta Sand (3)
-
Yegua Formation (22)
-
-
Uintan (2)
-
upper Eocene
-
Chadronian (10)
-
Jackson Group (25)
-
Moodys Branch Formation (6)
-
Piney Point Formation (1)
-
Tejon Formation (1)
-
Tepee Trail Formation (1)
-
Whitsett Formation (2)
-
Yazoo Clay (6)
-
-
-
lower Paleogene (5)
-
Oligocene
-
Brule Formation (29)
-
Fish Canyon Tuff (1)
-
Frio Formation (97)
-
Glendon Limestone (1)
-
Hackberry Formation (5)
-
lower Oligocene
-
Rupelian (1)
-
-
middle Oligocene
-
Bucatunna Formation (1)
-
Byram Formation (2)
-
Marianna Limestone (1)
-
-
upper Oligocene
-
Chickasawhay Formation (1)
-
-
Vicksburg Group (17)
-
-
Paleocene
-
Bullion Creek Formation (2)
-
Clayton Formation (4)
-
lower Paleocene
-
Danian (7)
-
K-T boundary (46)
-
Puercan (7)
-
Torrejonian (3)
-
-
Ludlow Member (11)
-
middle Paleocene (1)
-
Midway Group (12)
-
Porters Creek Formation (2)
-
Ravenscrag Formation (1)
-
Sentinel Butte Formation (2)
-
Tongue River Member (7)
-
Tullock Member (5)
-
upper Paleocene
-
Clarkforkian (1)
-
Tiffanian (2)
-
-
-
Paleocene-Eocene Thermal Maximum (5)
-
Renova Formation (2)
-
Sespe Formation (1)
-
upper Paleogene (1)
-
White River Group (26)
-
Wilcox Group (100)
-
-
upper Tertiary (1)
-
-
upper Cenozoic
-
Chesapeake Group (1)
-
-
-
Coal Measures (3)
-
Laurentide ice sheet (19)
-
Mesozoic
-
Cretaceous
-
Colorado Group (2)
-
Comanchean
-
Antlers Sands (3)
-
Buda Limestone (22)
-
Comanche Peak Limestone (2)
-
Edwards Formation (25)
-
Fredericksburg Group (7)
-
Georgetown Formation (5)
-
Glen Rose Formation (31)
-
Paluxy Formation (4)
-
Pearsall Formation (6)
-
Rodessa Formation (4)
-
Travis Peak Formation (14)
-
Trinity Group (11)
-
Washita Group (15)
-
-
Dakota Formation (42)
-
Graneros Shale (14)
-
Lower Cretaceous
-
Albian
-
upper Albian (10)
-
-
Antlers Sands (3)
-
Aptian (12)
-
Bear River Formation (1)
-
Berriasian (1)
-
Cedar Mountain Formation (1)
-
Cheyenne Sandstone (4)
-
Cloverly Formation (1)
-
Comanche Peak Limestone (2)
-
Cupido Formation (5)
-
Edwards Formation (25)
-
Fall River Formation (4)
-
Fredericksburg Group (7)
-
Gault Clay (1)
-
Georgetown Formation (5)
-
Glen Rose Formation (31)
-
Hosston Formation (5)
-
Inyan Kara Group (2)
-
Kiowa Formation (13)
-
Lakota Formation (2)
-
Mannville Group (1)
-
McMurray Formation (1)
-
Mesa Rica Sandstone (3)
-
Mowry Shale (10)
-
Muddy Sandstone (8)
-
Neocomian (2)
-
Newcastle Sandstone (4)
-
Paluxy Formation (4)
-
Pearsall Formation (6)
-
Rodessa Formation (4)
-
Skull Creek Shale (7)
-
Sligo Formation (13)
-
Travis Peak Formation (14)
-
Trinity Group (11)
-
Valanginian (1)
-
-
Mancos Shale (5)
-
Middle Cretaceous (19)
-
Potomac Group (1)
-
Santana Formation (1)
-
Upper Cretaceous
-
Almond Formation (2)
-
Bearpaw Formation (2)
-
Belle Fourche Shale (1)
-
Bridge Creek Limestone Member (5)
-
Buda Limestone (22)
-
Campanian
-
lower Campanian (3)
-
upper Campanian (7)
-
-
Carlile Shale (23)
-
Castlegate Sandstone (2)
-
Cenomanian
-
upper Cenomanian (3)
-
-
Codell Sandstone Member (13)
-
Coniacian (9)
-
Djadokhta Formation (1)
-
Eagle Sandstone (2)
-
Eutaw Formation (2)
-
Ferron Sandstone Member (2)
-
Fort Hays Limestone Member (8)
-
Fox Hills Formation (26)
-
Fruitland Formation (3)
-
Gammon Ferruginous Member (2)
-
Greenhorn Limestone (30)
-
Gulfian
-
Aguja Formation (14)
-
Austin Chalk (48)
-
Austin Group (25)
-
Eagle Ford Formation (104)
-
Escondido Formation (2)
-
Navarro Group (7)
-
Olmos Formation (2)
-
Prairie Bluff Chalk (3)
-
Taylor Marl (6)
-
Woodbine Formation (28)
-
-
Hell Creek Formation (42)
-
Hilliard Shale (1)
-
Javelina Formation (11)
-
Judith River Formation (3)
-
Kirtland Shale (6)
-
K-T boundary (46)
-
Lance Formation (13)
-
Laramie Formation (10)
-
Lewis Shale (5)
-
Maestrichtian
-
upper Maestrichtian (5)
-
-
Mesaverde Group (2)
-
Navesink Formation (1)
-
Niobrara Formation (72)
-
Ojo Alamo Sandstone (3)
-
Oldman Formation (2)
-
Parkman Sandstone (1)
-
Peedee Formation (1)
-
Pictured Cliffs Sandstone (2)
-
Pierre Shale (89)
-
Ripley Formation (3)
-
Santonian (10)
-
Saratoga Chalk (4)
-
Senonian (86)
-
Sharon Springs Member (7)
-
Smoky Hill Chalk Member (16)
-
Straight Cliffs Formation (1)
-
Tropic Shale (1)
-
Turonian
-
lower Turonian (1)
-
middle Turonian (1)
-
upper Turonian (1)
-
-
Tuscaloosa Formation (32)
-
Two Medicine Formation (1)
-
-
-
Franciscan Complex (1)
-
Glen Canyon Group (2)
-
Great Valley Sequence (1)
-
Jurassic
-
Bazhenov Formation (1)
-
Fort Dodge Gypsum (1)
-
Lower Jurassic
-
Hettangian (1)
-
Toarcian (1)
-
Triassic-Jurassic boundary (2)
-
-
Middle Jurassic
-
Bajocian (1)
-
Bathonian (1)
-
Callovian (3)
-
-
Norphlet Formation (7)
-
Oxford Clay (1)
-
Posidonia Shale (3)
-
San Rafael Group (1)
-
Solnhofen Limestone (1)
-
Twin Creek Limestone (1)
-
Upper Jurassic
-
Bossier Formation (12)
-
Brushy Basin Member (1)
-
Buckner Formation (5)
-
Cotton Valley Group (27)
-
Entrada Sandstone (2)
-
Haynesville Formation (21)
-
Kimmeridge Clay (1)
-
Kimmeridgian (3)
-
La Casita Formation (3)
-
Morrison Formation (9)
-
Oxfordian (7)
-
Salt Wash Sandstone Member (2)
-
Schuler Formation (5)
-
Smackover Formation (43)
-
Stump Formation (1)
-
Sundance Formation (7)
-
Swift Formation (1)
-
Tithonian (2)
-
-
-
Kayenta Formation (3)
-
lower Mesozoic (4)
-
Navajo Sandstone (1)
-
Newark Supergroup (1)
-
Nugget Sandstone (2)
-
Triassic
-
Lower Triassic
-
Permian-Triassic boundary (2)
-
-
Middle Triassic
-
Ladinian (1)
-
-
Moenkopi Formation (1)
-
Mole Granite (1)
-
Red Peak Formation (2)
-
Upper Triassic
-
Carnian (3)
-
Chinle Formation (10)
-
Dockum Group (16)
-
Lockatong Formation (2)
-
Norian (5)
-
Petrified Forest Member (1)
-
Redonda Formation (1)
-
Rhaetian (1)
-
Santa Rosa Sandstone (1)
-
Shinarump Member (1)
-
Triassic-Jurassic boundary (2)
-
-
-
upper Mesozoic (2)
-
-
MIS 2 (1)
-
MIS 5 (1)
-
MIS 7 (1)
-
Paleozoic
-
Arbuckle Group (51)
-
Bedford Shale (1)
-
Berea Sandstone (1)
-
Bird Spring Formation (2)
-
Cambrian
-
Acadian (1)
-
Glen Mountains Complex (1)
-
Lower Cambrian (6)
-
Middle Cambrian
-
Marjum Formation (2)
-
Mount Scott Granite (3)
-
-
Tapeats Sandstone (1)
-
Upper Cambrian
-
Bonneterre Formation (42)
-
Copper Ridge Dolomite (1)
-
Eau Claire Formation (5)
-
Franconia Formation (4)
-
Furongian
-
Jiangshanian (1)
-
-
Galesville Sandstone (2)
-
Lamotte Sandstone (18)
-
Maynardville Limestone (1)
-
Mount Simon Sandstone (7)
-
Orr Formation (1)
-
Reagan Sandstone (2)
-
Steptoean (3)
-
Timbered Hills Group (2)
-
Trempealeauan (4)
-
Wilberns Formation (11)
-
Wonewoc Formation (1)
-
-
-
Carboniferous
-
Bartlesville Sand (8)
-
Burbank Sand (4)
-
Diamond Peak Formation (1)
-
Hale Formation (7)
-
Jackfork Group (23)
-
Johns Valley Formation (9)
-
Lower Carboniferous
-
Dinantian (13)
-
-
Middle Carboniferous (6)
-
Mississippian
-
Barnett Shale (78)
-
Boone Formation (13)
-
Borden Group (3)
-
Chainman Shale (1)
-
Charles Formation (11)
-
Harrodsburg Limestone (4)
-
Lower Mississippian
-
Chappel Limestone (4)
-
Chouteau Limestone (4)
-
Cuyahoga Formation (1)
-
Fort Payne Formation (4)
-
Kinderhookian (15)
-
Lodgepole Formation (14)
-
Osagian
-
Burlington Limestone (47)
-
Keokuk Limestone (24)
-
-
Tournaisian
-
upper Tournaisian (2)
-
-
-
Madison Group (24)
-
Middle Mississippian
-
Visean
-
upper Visean (1)
-
-
-
Mission Canyon Limestone (29)
-
Ramp Creek Formation (2)
-
Stanley Group (18)
-
Upper Mississippian
-
Chesterian
-
Aux Vases Sandstone (1)
-
Golconda Formation (1)
-
Imo Formation (18)
-
Renault Formation (2)
-
-
Fayetteville Formation (26)
-
Greenbrier Limestone (1)
-
Hartselle Sandstone (1)
-
Heath Formation (3)
-
Meramecian
-
Saint Louis Limestone (10)
-
Sainte Genevieve Limestone (7)
-
Salem Limestone (6)
-
Warsaw Formation (14)
-
-
Parkwood Formation (2)
-
Pennington Formation (3)
-
Pitkin Limestone (7)
-
Pride Mountain Formation (1)
-
Serpukhovian (1)
-
-
Valmeyeran (1)
-
Windsor Group (1)
-
-
Namurian (5)
-
Pennsylvanian
-
Excello Shale (2)
-
Francis Creek Shale (1)
-
Hermosa Group (1)
-
Lower Pennsylvanian
-
Bashkirian (3)
-
Caseyville Formation (4)
-
Haymond Formation (10)
-
Morrowan
-
Bloyd Formation (8)
-
-
-
Mansfield Formation (1)
-
Marble Falls Group (17)
-
Middle Pennsylvanian
-
Atokan
-
Atoka Formation (37)
-
-
Breathitt Formation (1)
-
Carbondale Formation (5)
-
Desmoinesian
-
Boggy Shale (3)
-
Cabaniss Formation (2)
-
Cherokee Group (25)
-
Hartshorne Sandstone (3)
-
Krebs Group (3)
-
Labette Shale (1)
-
Marmaton Group (6)
-
Spiro Sandstone (3)
-
Wewoka Formation (5)
-
-
Dugger Formation (1)
-
Kanawha Formation (1)
-
Kewanee Group (1)
-
Moscovian (4)
-
Paradox Formation (1)
-
Spoon Formation (1)
-
Staunton Formation (2)
-
Tradewater Formation (2)
-
-
Morrow Formation (26)
-
Red Fork Sandstone (12)
-
Smithwick Shale (2)
-
Springfield Coal Member (1)
-
Strawn Series (22)
-
Upper Pennsylvanian
-
Canyon Group (16)
-
Cisco Group (20)
-
Gzhelian (5)
-
Holder Formation (3)
-
Kasimovian (4)
-
Missourian
-
Kansas City Group (20)
-
Lansing Group (22)
-
Plattsburg Limestone (6)
-
Pleasanton Group (1)
-
Rock Lake Shale Member (7)
-
Seminole Formation (2)
-
Stanton Formation (9)
-
Wann Formation (3)
-
Wyandotte Limestone (2)
-
-
Virgilian
-
Douglas Group (10)
-
Lawrence Formation (5)
-
Lecompton Limestone (2)
-
Oread Limestone (2)
-
Plattsmouth Limestone Member (5)
-
Shawnee Group (9)
-
Tonganoxie Sandstone (4)
-
Wabaunsee Group (5)
-
-
-
Wapanucka Limestone (5)
-
Westerly Granite (1)
-
-
Springer Formation (7)
-
Tesnus Formation (9)
-
Upper Carboniferous
-
Millstone Grit (1)
-
Stephanian (3)
-
Westphalian (7)
-
-
-
Casper Formation (2)
-
Chattanooga Shale (7)
-
Collier Shale (3)
-
Deadwood Formation (11)
-
Devonian
-
Cedar City Formation (4)
-
Guilmette Formation (1)
-
Lower Devonian
-
Emsian (2)
-
Gedinnian (1)
-
Helderbergian (1)
-
Lochkovian (3)
-
-
Middle Devonian
-
Cedar Valley Formation (8)
-
Couvinian (1)
-
Eifelian (2)
-
Givetian
-
upper Givetian (1)
-
-
Hamilton Group (1)
-
Jeffersonville Limestone (1)
-
Marcellus Shale (7)
-
Moscow Formation (1)
-
Onondaga Limestone (1)
-
Prairie Evaporite (3)
-
Saint Laurent Limestone (2)
-
Sylvania Formation (1)
-
Winnipegosis Formation (7)
-
-
Thirtyone Formation (10)
-
Traverse Group (1)
-
Upper Devonian
-
Birdbear Formation (3)
-
Duperow Formation (15)
-
Famennian
-
Wabamun Group (1)
-
-
Frasnian
-
Leduc Formation (1)
-
-
Lime Creek Formation (6)
-
Nisku Formation (1)
-
Ohio Shale (1)
-
Palliser Formation (1)
-
-
Waterways Formation (1)
-
-
Dunkard Group (1)
-
Hunton Group (28)
-
Knox Group (3)
-
Laborcita Formation (3)
-
lower Paleozoic
-
Cape Phillips Formation (2)
-
Conococheague Formation (1)
-
-
Magdalena Group (1)
-
Manhattan Formation (1)
-
middle Paleozoic (2)
-
Minnelusa Formation (14)
-
New Albany Shale (3)
-
Ordovician
-
Antelope Valley Limestone (1)
-
Eureka Quartzite (1)
-
Lexington Limestone (1)
-
Lower Ordovician
-
Arenigian (1)
-
Beekmantown Group (1)
-
El Paso Group (4)
-
Ellenburger Group (44)
-
Fillmore Formation (1)
-
Ibexian (3)
-
Kindblade Formation (5)
-
Manitou Formation (6)
-
Oneota Dolomite (2)
-
Prairie du Chien Group (3)
-
Shakopee Formation (2)
-
Smithville Formation (1)
-
-
Middle Ordovician
-
Bigfork Chert (1)
-
Blackriverian (3)
-
Bromide Formation (32)
-
Champlainian (3)
-
Chazyan (1)
-
Darriwilian (2)
-
Decorah Shale (20)
-
Deicke Bentonite Bed (6)
-
Everton Formation (3)
-
Galena Dolomite (20)
-
Glenwood Shale (3)
-
Millbrig Bentonite Bed (3)
-
Platteville Formation (16)
-
Saint Peter Sandstone (13)
-
Simpson Group (29)
-
Stones River Group (1)
-
Whiterockian (2)
-
Winnipeg Formation (5)
-
Woods Hollow Shale (3)
-
-
Montoya Group (9)
-
Trenton Group (5)
-
Upper Ordovician
-
Caradocian (3)
-
Cincinnatian
-
Maysvillian (2)
-
Richmondian (5)
-
-
Fernvale Formation (4)
-
Katian (4)
-
Kope Formation (1)
-
Maquoketa Formation (36)
-
Mohawkian (1)
-
Red River Formation (20)
-
Sandbian (3)
-
Trentonian (7)
-
Whitewater Formation (1)
-
-
Utica Shale (2)
-
Viola Limestone (25)
-
Womble Shale (2)
-
-
Permian
-
Americus Limestone Member (3)
-
Blaine Formation (12)
-
Castile Formation (14)
-
Chase Group (6)
-
Cottonwood Limestone (3)
-
Council Grove Group (11)
-
Cutler Formation (5)
-
Eskridge Shale (2)
-
Fort Riley Limestone (2)
-
Glorieta Sandstone (3)
-
Guadalupian
-
Bell Canyon Formation (20)
-
Brushy Canyon Formation (15)
-
Capitan Formation (23)
-
Capitanian (2)
-
Cherry Canyon Formation (14)
-
Delaware Mountain Group (10)
-
Grayburg Formation (16)
-
Queen Formation (6)
-
Roadian (2)
-
Seven Rivers Formation (7)
-
Tansill Formation (14)
-
Wordian (3)
-
-
Hennessey Formation (10)
-
Hughes Creek Shale (5)
-
Hutchinson Salt Member (5)
-
Kaibab Formation (3)
-
Lower Permian
-
Abo Formation (6)
-
Cherry Canyon Formation (14)
-
Cisuralian
-
Artinskian (3)
-
Asselian (6)
-
Kungurian (7)
-
Sakmarian (3)
-
-
Leonardian
-
Bone Spring Limestone (16)
-
Clear Fork Group (22)
-
-
Opeche Shale (1)
-
Wichita Group (11)
-
Wolfcampian
-
Hueco Limestone (4)
-
-
-
Lyons Sandstone (5)
-
Middle Permian (23)
-
Newcastle Coal Measures (1)
-
Park City Formation (1)
-
Phosphoria Formation (2)
-
Red Eagle Limestone (1)
-
Rotliegendes (1)
-
Rustler Formation (6)
-
Stearns Shale (2)
-
Stone Corral Formation (5)
-
Upper Permian
-
Kazanian (2)
-
Lopingian (2)
-
Permian-Triassic boundary (2)
-
Salado Formation (17)
-
Tatarian (2)
-
Zechstein (3)
-
-
Wellington Formation (21)
-
Wreford Limestone (2)
-
Yates Formation (13)
-
Yeso Formation (6)
-
-
Read Bay Formation (3)
-
Sauk Sequence (5)
-
Shoo Fly Complex (1)
-
Silurian
-
Bainbridge Formation (4)
-
Fusselman Dolomite (4)
-
Henryhouse Formation (10)
-
Lockport Formation (3)
-
Lower Silurian
-
Alexandrian (2)
-
Brassfield Formation (1)
-
Llandovery
-
Interlake Formation (6)
-
Rhuddanian (2)
-
-
Tuscarora Formation (1)
-
Wenlock
-
Sheinwoodian (1)
-
-
-
Middle Silurian
-
Clinton Group (2)
-
Keefer Sandstone (1)
-
Racine Dolomite (3)
-
Roberts Mountains Formation (1)
-
Waldron Shale (3)
-
-
Niagaran (9)
-
Upper Silurian
-
Ludlow (6)
-
Pridoli (1)
-
Salina Group (1)
-
Wristen Formation (2)
-
-
-
Tensleep Sandstone (2)
-
Tippecanoe Sequence (1)
-
upper Paleozoic
-
Admire Group (5)
-
Antrim Shale (1)
-
Arkansas Novaculite (9)
-
Bakken Formation (58)
-
Fountain Formation (9)
-
Kaskaskia Sequence (4)
-
-
Weber Sandstone (1)
-
Woodford Shale (71)
-
-
Phanerozoic (20)
-
Precambrian
-
Animikie Group (6)
-
Archean
-
Mesoarchean (1)
-
Neoarchean (14)
-
Paleoarchean (2)
-
Timiskaming Group (1)
-
Vermilion granitic complex (1)
-
-
Biwabik Iron Formation (19)
-
Carrizo Mountain Formation (3)
-
Eocambrian (2)
-
Gunflint Iron Formation (8)
-
Hazel Formation (2)
-
Laramie anorthosite complex (1)
-
middle Precambrian (5)
-
Nonesuch Shale (4)
-
North Shore Volcanics (9)
-
Osler Series (1)
-
Sioux Quartzite (3)
-
Stillwater Complex (2)
-
Uinta Mountain Group (1)
-
upper Precambrian
-
Proterozoic
-
Algonkian
-
Baraboo Quartzite (3)
-
-
Great Oxidation Event (1)
-
Huronian (4)
-
Keweenawan
-
Copper Harbor Conglomerate (1)
-
-
Lewisian (1)
-
Mesoproterozoic
-
Belt Supergroup (1)
-
Fordham Gneiss (1)
-
Freda Sandstone (3)
-
Gawler Range Volcanics (1)
-
Stenian (1)
-
-
Negaunee Iron Formation (1)
-
Neoproterozoic
-
Ediacaran (1)
-
-
Oronto Group (4)
-
Ortega Group (1)
-
Paleoproterozoic
-
Thomson Formation (6)
-
Virginia Formation (13)
-
-
Sinian (1)
-
-
-
Vadito Group (1)
-
-
-
igneous rocks
-
igneous rocks
-
carbonatites (9)
-
granophyre (3)
-
hypabyssal rocks (2)
-
kimberlite (11)
-
plutonic rocks
-
anorthosite (10)
-
diabase (15)
-
diorites
-
microdiorite (2)
-
tonalite (1)
-
-
gabbros
-
alkali gabbros (1)
-
norite (1)
-
olivine gabbro (1)
-
troctolite (13)
-
-
granites
-
aplite (3)
-
A-type granites (3)
-
felsite (1)
-
leucogranite (4)
-
rapakivi (2)
-
S-type granites (4)
-
two-mica granite (1)
-
-
granodiorites (3)
-
ijolite (2)
-
lamproite (12)
-
lamprophyres
-
minette (2)
-
-
monzodiorite (1)
-
monzonites (1)
-
pegmatite (49)
-
quartz monzonite (1)
-
syenites
-
nepheline syenite
-
agpaite (1)
-
-
syenite porphyry (1)
-
-
ultramafics
-
chromitite (1)
-
peridotites
-
dunite (1)
-
harzburgite (1)
-
lherzolite (1)
-
spinel lherzolite (1)
-
spinel peridotite (1)
-
-
pyroxenite (2)
-
-
-
porphyry (3)
-
volcanic rocks
-
andesites (2)
-
basalts
-
alkali basalts
-
hawaiite (2)
-
mugearite (2)
-
nepheline basalt (1)
-
-
columnar basalt (1)
-
flood basalts (1)
-
mid-ocean ridge basalts (1)
-
olivine basalt (1)
-
olivine tholeiite (1)
-
tholeiite (2)
-
-
basanite (1)
-
benmoreite (1)
-
glasses
-
palagonite (1)
-
volcanic glass (4)
-
-
komatiite (2)
-
nephelinite
-
olivine nephelinite (1)
-
-
phonolites (5)
-
pyroclastics
-
ash-flow tuff (4)
-
ignimbrite (6)
-
pumice (1)
-
tuff (36)
-
welded tuff (2)
-
-
quartz latite (1)
-
rhyolites
-
rhyolite porphyry (1)
-
-
trachyandesites (1)
-
trachytes (6)
-
-
-
ophiolite (2)
-
volcanic ash (26)
-
-
metamorphic rocks
-
K-bentonite (7)
-
metamorphic rocks
-
amphibolites (6)
-
eclogite (3)
-
gneisses
-
biotite gneiss (1)
-
granite gneiss (1)
-
-
granulites (3)
-
hornfels (4)
-
impactites
-
impact breccia (2)
-
-
marbles (2)
-
metaigneous rocks
-
meta-andesite (1)
-
metabasalt (6)
-
metabasite (2)
-
metadiabase (1)
-
metagabbro (1)
-
metagranite (5)
-
metakomatiite (1)
-
metaperidotite (1)
-
metarhyolite (1)
-
metatuff (1)
-
serpentinite (4)
-
-
metaplutonic rocks (6)
-
metasedimentary rocks
-
metaconglomerate (1)
-
metagraywacke (2)
-
metapelite (8)
-
metasandstone (1)
-
-
metasomatic rocks
-
greisen (2)
-
serpentinite (4)
-
skarn (4)
-
-
metavolcanic rocks (10)
-
migmatites (8)
-
mylonites
-
pseudotachylite (2)
-
-
phyllites (1)
-
quartzites (12)
-
schists
-
biotite schist (1)
-
greenschist (1)
-
greenstone (7)
-
tourmalinite (2)
-
-
slates (10)
-
-
ophiolite (2)
-
turbidite (62)
-
-
meteorites
-
meteorites
-
iron meteorites (3)
-
stony irons
-
pallasite
-
Brenham Meteorite (1)
-
-
-
stony meteorites
-
achondrites
-
aubrite
-
Norton County Meteorite (3)
-
-
-
chondrites
-
enstatite chondrites
-
EH chondrites
-
Abee Meteorite (1)
-
-
-
ordinary chondrites
-
L chondrites (1)
-
-
-
-
-
-
minerals
-
alloys (1)
-
arsenates
-
scorodite (1)
-
-
arsenides
-
arsenopyrite (2)
-
cobaltite (1)
-
gersdorffite (1)
-
lollingite (3)
-
maucherite (1)
-
nickeline (1)
-
rammelsbergite (1)
-
safflorite (1)
-
sperrylite (1)
-
-
borates (2)
-
carbonates
-
ankerite (7)
-
aragonite (28)
-
bastnaesite (2)
-
calcite (129)
-
dawsonite (1)
-
dolomite (81)
-
huntite (1)
-
magnesian calcite (5)
-
magnesite (3)
-
norsethite (1)
-
rhodochrosite (1)
-
siderite (11)
-
sphaerosiderite (2)
-
spurrite (1)
-
strontianite (1)
-
witherite (1)
-
-
halides
-
bromides (2)
-
chlorides
-
carnallite (2)
-
halite (31)
-
kainite (1)
-
pyromorphite (1)
-
sylvite (3)
-
vanadinite (1)
-
-
fluorides
-
bastnaesite (2)
-
cryolite (1)
-
fluorite (9)
-
topaz (4)
-
triplite (1)
-
villiaumite (1)
-
-
-
hydrates (3)
-
K-bentonite (7)
-
manganese minerals (1)
-
minerals (178)
-
molybdates
-
wulfenite (1)
-
-
native elements
-
diamond (7)
-
graphite (5)
-
-
nitrates (1)
-
organic minerals
-
amber (1)
-
-
oxides
-
aluminum oxides (4)
-
anatase (4)
-
baddeleyite (2)
-
boehmite (1)
-
brucite (2)
-
cassiterite (3)
-
chrome spinel (1)
-
chromite (2)
-
corundum (3)
-
cryptomelane (1)
-
diaspore (4)
-
gibbsite (6)
-
goethite (14)
-
groutite (1)
-
hematite (21)
-
hollandite (1)
-
hydroxides
-
iron hydroxides (2)
-
-
ilmenite (7)
-
iron oxides (12)
-
leucoxene (2)
-
limonite (3)
-
maghemite (1)
-
magnetite (32)
-
manganese oxides (4)
-
niobates
-
euxenite (1)
-
fergusonite (1)
-
loparite (1)
-
samarskite (2)
-
tapiolite (1)
-
-
periclase (1)
-
perovskite (3)
-
pitchblende (1)
-
priderite (1)
-
ramsdellite (1)
-
rutile (6)
-
spinel (2)
-
spinel group (1)
-
tantalates
-
euxenite (1)
-
microlite (1)
-
tantalite (2)
-
wodginite (1)
-
-
uraninite (2)
-
-
phosphates
-
apatite (30)
-
barbosalite (1)
-
cacoxenite (1)
-
carbonate apatite (1)
-
crandallite (1)
-
fluorapatite (2)
-
francolite (1)
-
goyazite (3)
-
graftonite (1)
-
hureaulite (2)
-
monazite (11)
-
pyromorphite (1)
-
rhabdophane (1)
-
rockbridgeite (1)
-
sarcopside (1)
-
strengite (2)
-
torbernite (1)
-
triphylite (2)
-
triplite (1)
-
variscite (1)
-
vivianite (2)
-
wavellite (2)
-
xenotime (5)
-
-
platinum minerals (1)
-
silicates
-
aluminosilicates (1)
-
chain silicates
-
aenigmatite group
-
sapphirine (1)
-
-
amphibole group
-
clinoamphibole
-
actinolite (3)
-
cummingtonite (3)
-
grunerite (1)
-
hornblende (7)
-
kaersutite (1)
-
pargasite (1)
-
richterite (1)
-
riebeckite (2)
-
-
orthoamphibole
-
anthophyllite (1)
-
gedrite (3)
-
holmquistite (1)
-
-
-
pyroxene group
-
clinopyroxene
-
aegirine (2)
-
diopside (5)
-
salite (1)
-
spodumene (4)
-
-
orthopyroxene
-
enstatite (4)
-
-
-
wollastonite group
-
pectolite (1)
-
wollastonite (2)
-
-
xonotlite (1)
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
adularia (2)
-
anorthoclase (1)
-
cryptoperthite (3)
-
hyalophane (1)
-
K-feldspar (23)
-
microcline (5)
-
perthite (1)
-
sanidine (12)
-
-
barium feldspar
-
hyalophane (1)
-
-
plagioclase
-
albite (7)
-
anorthite (2)
-
bytownite (1)
-
-
-
scapolite group
-
scapolite (1)
-
-
silica minerals
-
chalcedony (3)
-
jasper (1)
-
opal
-
opal-A (1)
-
opal-CT (3)
-
-
quartz (91)
-
-
sodalite group
-
genthelvite (2)
-
sodalite (1)
-
-
zeolite group
-
analcime (3)
-
clinoptilolite (3)
-
erionite (1)
-
offretite (1)
-
pollucite (1)
-
thomsonite (1)
-
-
-
orthosilicates
-
nesosilicates
-
andalusite (2)
-
braunite (1)
-
datolite group
-
gadolinite (1)
-
-
dumortierite (1)
-
garnet group
-
almandine (2)
-
andradite (3)
-
grossular (4)
-
melanite (1)
-
pyrope (2)
-
schorlomite (1)
-
uvarovite (1)
-
-
olivine group
-
fayalite (1)
-
olivine (5)
-
-
sillimanite (7)
-
spurrite (1)
-
staurolite (3)
-
titanite group
-
titanite (7)
-
-
topaz (4)
-
zircon group
-
coffinite (1)
-
zircon (120)
-
-
-
sorosilicates
-
axinite group (1)
-
bertrandite (1)
-
epidote group
-
allanite (3)
-
epidote (4)
-
-
thortveitite group
-
yttrialite (1)
-
-
-
-
ring silicates
-
beryl (2)
-
tourmaline group (10)
-
-
sheet silicates
-
chlorite group
-
chamosite (4)
-
chlorite (37)
-
cookeite (1)
-
-
clay minerals
-
allophane (2)
-
beidellite (2)
-
dickite (9)
-
halloysite (4)
-
hisingerite (1)
-
kaolinite (63)
-
montmorillonite (22)
-
nacrite (1)
-
nontronite (3)
-
saponite (2)
-
smectite (85)
-
stevensite (1)
-
vermiculite (7)
-
-
corrensite (2)
-
illite (89)
-
magadiite (1)
-
margarite (1)
-
mica group
-
biotite (15)
-
celadonite (1)
-
glauconite (19)
-
muscovite (11)
-
paragonite (1)
-
phlogopite (4)
-
-
palygorskite (2)
-
pyrophyllite (2)
-
rectorite (5)
-
sepiolite (2)
-
sericite (1)
-
serpentine group
-
antigorite (1)
-
berthierine (4)
-
lizardite (1)
-
serpentine (6)
-
-
stilpnomelane (4)
-
talc (1)
-
-
-
sulfates
-
alunite (3)
-
anhydrite (61)
-
barite (9)
-
bassanite (1)
-
celestine (4)
-
ettringite (1)
-
glauberite (1)
-
gypsum (40)
-
halotrichite (1)
-
jarosite (4)
-
kainite (1)
-
kieserite (1)
-
langbeinite (1)
-
natroalunite (2)
-
polyhalite (2)
-
rozenite (1)
-
-
sulfides
-
arsenopyrite (2)
-
bornite (1)
-
bravoite (1)
-
chalcocite (1)
-
chalcopyrite (2)
-
cinnabar (6)
-
cobaltite (1)
-
copper sulfides (1)
-
covellite (1)
-
cubanite (1)
-
digenite (1)
-
galena (22)
-
genthelvite (2)
-
gersdorffite (1)
-
iron sulfides (6)
-
kesterite (1)
-
marcasite (9)
-
mawsonite (1)
-
molybdenite (4)
-
nickel sulfides (1)
-
pentlandite (1)
-
pyrite (31)
-
pyrrhotite (6)
-
sphalerite (27)
-
stibnite (2)
-
troilite (1)
-
wurtzite (2)
-
zinc sulfides (1)
-
-
sulfosalts
-
sulfantimonites
-
tetrahedrite (1)
-
-
sulfarsenates
-
enargite (2)
-
-
sulfostannates
-
stannite (3)
-
-
-
tellurides (1)
-
uranium minerals (2)
-
vanadates
-
carnotite (1)
-
vanadinite (1)
-
-
-
Primary terms
-
absolute age (322)
-
academic institutions (4)
-
Africa
-
Central Africa
-
Angola (3)
-
Congo (2)
-
Congo River (1)
-
-
East Africa
-
Ethiopia (1)
-
Kenya
-
Kenya Rift valley (1)
-
-
Tanzania (2)
-
Zambia (1)
-
-
North Africa
-
Algeria (6)
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Anti-Atlas (1)
-
-
-
Egypt (2)
-
Illizi Basin (1)
-
Libya (2)
-
Morocco
-
Bou Azzer (1)
-
Moroccan Atlas Mountains
-
Anti-Atlas (1)
-
-
Tafilalt (1)
-
Tarfaya Morocco (1)
-
-
Tunisia
-
El Kef Tunisia (3)
-
-
-
Southern Africa
-
Namibia (1)
-
South Africa
-
Bushveld Complex (2)
-
Merensky Reef (1)
-
Transvaal region (1)
-
-
Zimbabwe
-
Great Dyke (1)
-
-
-
West Africa
-
Ghana (3)
-
Guinea (1)
-
Ivory Coast (1)
-
Niger (1)
-
Niger River (2)
-
Nigeria
-
Niger Delta (4)
-
-
Senegal (2)
-
-
-
Antarctica
-
Antarctic ice sheet (1)
-
Antarctic Peninsula (1)
-
East Antarctica (2)
-
Victoria Land
-
Allan Hills (1)
-
-
-
Arctic Ocean
-
Barents Sea (1)
-
Chukchi Sea (1)
-
Norwegian Sea (2)
-
-
Arctic region
-
Greenland
-
East Greenland (2)
-
Ivittuut Greenland (1)
-
Jameson Land (2)
-
Northern Greenland (1)
-
Peary Land (1)
-
Skaergaard Intrusion (1)
-
-
Russian Arctic
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Novaya Zemlya (1)
-
-
Svalbard (1)
-
-
Asia
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Arabian Peninsula
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Arabian Shield (1)
-
Kuwait (2)
-
Oman (1)
-
Saudi Arabia (5)
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United Arab Emirates
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Abu Dhabi (3)
-
-
-
Central Asia (1)
-
Far East
-
Borneo
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Brunei (1)
-
-
China
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Guangxi China (1)
-
Guizhou China (1)
-
Henan China (1)
-
Huang He (1)
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Hubei China (1)
-
Jilin China (1)
-
Kunlun Mountains (1)
-
Liaoning China (1)
-
Loess Plateau (1)
-
Qilian Mountains (1)
-
Qinghai China (2)
-
Sichuan Basin (1)
-
Sichuan China (1)
-
Xinjiang China
-
Junggar (1)
-
Tarim Basin (1)
-
-
Yangtze River (1)
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Yunnan China (1)
-
-
Indonesia
-
Java (2)
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Sumatra (1)
-
-
Japan
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Honshu
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Aomori Japan
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Shimokita Peninsula (1)
-
-
-
-
Korea
-
South Korea (3)
-
-
Laos (1)
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Lesser Sunda Islands
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Timor (1)
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Mongolia (2)
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Philippine Islands (1)
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Taiwan
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Taipei Taiwan (1)
-
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Thailand (1)
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Vietnam (1)
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Gobi Desert (1)
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Himalayas (3)
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Indian Peninsula
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Afghanistan (3)
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India
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Andhra Pradesh India
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Cuddapah Basin (1)
-
-
Northeastern India
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Meghalaya India (1)
-
-
Orissa India (1)
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-
Pakistan
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Baluchistan Pakistan (1)
-
-
-
Indus River (1)
-
Middle East
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Dead Sea (1)
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Iran
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Elburz (1)
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Tehran Iran (1)
-
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Iraq (1)
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Israel (3)
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Turkey (1)
-
Zagros (2)
-
-
Siberia (3)
-
Siberian Platform
-
Vilyuy Syneclise (1)
-
-
Tyumen Russian Federation (1)
-
Uzbekistan (2)
-
West Siberia (1)
-
Yakutia Russian Federation (1)
-
-
associations (10)
-
asteroids (2)
-
Atlantic Ocean
-
North Atlantic
-
Blake Plateau
-
Blake Nose (2)
-
-
Caribbean Sea (2)
-
Celtic Sea (1)
-
English Channel (1)
-
Faeroe-Shetland Basin (1)
-
Great Bahama Bank (2)
-
Gulf of Cadiz (1)
-
Gulf of Guinea (1)
-
Gulf of Maine (1)
-
Gulf of Mexico
-
Alaminos Canyon (2)
-
Atwater Valley (2)
-
De Soto Canyon (4)
-
Eugene Island Block 330 Field (7)
-
Ewing Bank (7)
-
Florida Bay (4)
-
Garden Banks (18)
-
Mississippi Canyon (7)
-
Mississippi Fan (7)
-
Orca Basin (1)
-
Pigmy Basin (3)
-
Sigsbee Escarpment (9)
-
Yucatan Shelf (2)
-
-
Little Bahama Bank (1)
-
North Sea
-
Viking Graben (1)
-
-
Northeast Atlantic (1)
-
Northwest Atlantic
-
Demerara Rise (1)
-
-
Porcupine Basin (1)
-
Rockall Trough (1)
-
Scotian Shelf (1)
-
-
South Atlantic
-
Espirito Santo Basin (1)
-
Maurice Ewing Bank (1)
-
Rio Grande Rise (1)
-
Southeast Atlantic (1)
-
-
-
Atlantic Ocean Islands
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Bermuda (3)
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Falkland Islands (1)
-
-
atmosphere (7)
-
Australasia
-
Australia
-
Bass Strait
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Bass Basin (1)
-
-
Lachlan fold belt (1)
-
New South Wales Australia (4)
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Northern Territory Australia
-
Pine Creek Geosyncline (1)
-
-
Queensland Australia (2)
-
South Australia
-
Beltana Australia (1)
-
Gawler Craton (1)
-
-
Tanami Desert (1)
-
Victoria Australia
-
Gippsland Basin (1)
-
-
Western Australia
-
Canning Basin (1)
-
Hamersley Basin (1)
-
Yilgarn (1)
-
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ijolite (2)
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Insecta
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Echinodermata
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Miliolina
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Globigerinacea
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Textulariina
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Vermes
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Re-187/Os-188 (1)
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S-33/S-32 (2)
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S-34 (1)
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S-34/S-32 (53)
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Sr-87/Sr-86 (62)
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land subsidence (39)
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Mesozoic
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Cretaceous
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Colorado Group (2)
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Antlers Sands (3)
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Buda Limestone (22)
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Comanche Peak Limestone (2)
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Edwards Formation (25)
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Fredericksburg Group (7)
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Georgetown Formation (5)
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Glen Rose Formation (31)
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Paluxy Formation (4)
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Pearsall Formation (6)
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Rodessa Formation (4)
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Travis Peak Formation (14)
-
Trinity Group (11)
-
Washita Group (15)
-
-
Dakota Formation (42)
-
Graneros Shale (14)
-
Lower Cretaceous
-
Albian
-
upper Albian (10)
-
-
Antlers Sands (3)
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Aptian (12)
-
Bear River Formation (1)
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Berriasian (1)
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Cedar Mountain Formation (1)
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Cheyenne Sandstone (4)
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Cloverly Formation (1)
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Comanche Peak Limestone (2)
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Cupido Formation (5)
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Edwards Formation (25)
-
Fall River Formation (4)
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Fredericksburg Group (7)
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Gault Clay (1)
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Georgetown Formation (5)
-
Glen Rose Formation (31)
-
Hosston Formation (5)
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Inyan Kara Group (2)
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Kiowa Formation (13)
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Lakota Formation (2)
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Mannville Group (1)
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McMurray Formation (1)
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Mesa Rica Sandstone (3)
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Mowry Shale (10)
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Muddy Sandstone (8)
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Neocomian (2)
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Newcastle Sandstone (4)
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Paluxy Formation (4)
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Pearsall Formation (6)
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Rodessa Formation (4)
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Skull Creek Shale (7)
-
Sligo Formation (13)
-
Travis Peak Formation (14)
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Trinity Group (11)
-
Valanginian (1)
-
-
Mancos Shale (5)
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Middle Cretaceous (19)
-
Potomac Group (1)
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Santana Formation (1)
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Upper Cretaceous
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Almond Formation (2)
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Bearpaw Formation (2)
-
Belle Fourche Shale (1)
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Bridge Creek Limestone Member (5)
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Buda Limestone (22)
-
Campanian
-
lower Campanian (3)
-
upper Campanian (7)
-
-
Carlile Shale (23)
-
Castlegate Sandstone (2)
-
Cenomanian
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upper Cenomanian (3)
-
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Codell Sandstone Member (13)
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Coniacian (9)
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Djadokhta Formation (1)
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Eagle Sandstone (2)
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Eutaw Formation (2)
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Ferron Sandstone Member (2)
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Fort Hays Limestone Member (8)
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Fox Hills Formation (26)
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Fruitland Formation (3)
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Gammon Ferruginous Member (2)
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Greenhorn Limestone (30)
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Gulfian
-
Aguja Formation (14)
-
Austin Chalk (48)
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Austin Group (25)
-
Eagle Ford Formation (104)
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Escondido Formation (2)
-
Navarro Group (7)
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Olmos Formation (2)
-
Prairie Bluff Chalk (3)
-
Taylor Marl (6)
-
Woodbine Formation (28)
-
-
Hell Creek Formation (42)
-
Hilliard Shale (1)
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Javelina Formation (11)
-
Judith River Formation (3)
-
Kirtland Shale (6)
-
K-T boundary (46)
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Lance Formation (13)
-
Laramie Formation (10)
-
Lewis Shale (5)
-
Maestrichtian
-
upper Maestrichtian (5)
-
-
Mesaverde Group (2)
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Navesink Formation (1)
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Niobrara Formation (72)
-
Ojo Alamo Sandstone (3)
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Oldman Formation (2)
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Parkman Sandstone (1)
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Peedee Formation (1)
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Pictured Cliffs Sandstone (2)
-
Pierre Shale (89)
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Ripley Formation (3)
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Santonian (10)
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Saratoga Chalk (4)
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Senonian (86)
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Sharon Springs Member (7)
-
Smoky Hill Chalk Member (16)
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Straight Cliffs Formation (1)
-
Tropic Shale (1)
-
Turonian
-
lower Turonian (1)
-
middle Turonian (1)
-
upper Turonian (1)
-
-
Tuscaloosa Formation (32)
-
Two Medicine Formation (1)
-
-
-
Franciscan Complex (1)
-
Glen Canyon Group (2)
-
Great Valley Sequence (1)
-
Jurassic
-
Bazhenov Formation (1)
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Fort Dodge Gypsum (1)
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Lower Jurassic
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Hettangian (1)
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Toarcian (1)
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Triassic-Jurassic boundary (2)
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Middle Jurassic
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Bajocian (1)
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-
-
Norphlet Formation (7)
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Oxford Clay (1)
-
Posidonia Shale (3)
-
San Rafael Group (1)
-
Solnhofen Limestone (1)
-
Twin Creek Limestone (1)
-
Upper Jurassic
-
Bossier Formation (12)
-
Brushy Basin Member (1)
-
Buckner Formation (5)
-
Cotton Valley Group (27)
-
Entrada Sandstone (2)
-
Haynesville Formation (21)
-
Kimmeridge Clay (1)
-
Kimmeridgian (3)
-
La Casita Formation (3)
-
Morrison Formation (9)
-
Oxfordian (7)
-
Salt Wash Sandstone Member (2)
-
Schuler Formation (5)
-
Smackover Formation (43)
-
Stump Formation (1)
-
Sundance Formation (7)
-
Swift Formation (1)
-
Tithonian (2)
-
-
-
Kayenta Formation (3)
-
lower Mesozoic (4)
-
Navajo Sandstone (1)
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Newark Supergroup (1)
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Nugget Sandstone (2)
-
Triassic
-
Lower Triassic
-
Permian-Triassic boundary (2)
-
-
Middle Triassic
-
Ladinian (1)
-
-
Moenkopi Formation (1)
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Mole Granite (1)
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Red Peak Formation (2)
-
Upper Triassic
-
Carnian (3)
-
Chinle Formation (10)
-
Dockum Group (16)
-
Lockatong Formation (2)
-
Norian (5)
-
Petrified Forest Member (1)
-
Redonda Formation (1)
-
Rhaetian (1)
-
Santa Rosa Sandstone (1)
-
Shinarump Member (1)
-
Triassic-Jurassic boundary (2)
-
-
-
upper Mesozoic (2)
-
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metal ores
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metals
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Am-241 (1)
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uranium
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U-238 (1)
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U-238/Pb-204 (1)
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-
-
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alkali metals
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cesium
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Cs-137 (9)
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rubidium (5)
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Be-10 (6)
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Be-7 (1)
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calcium
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Mg/Ca (3)
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Sr/Ca (1)
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magnesium
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Mg/Ca (3)
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radium (1)
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strontium
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Sr/Ca (1)
-
Sr-87/Sr-86 (62)
-
Sr-90 (1)
-
-
-
aluminum
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Al-26 (2)
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Al-27 (1)
-
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antimony (1)
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arsenic (7)
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Cr-51 (1)
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cobalt (2)
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gallium (1)
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gold (10)
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hafnium
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Hf-177/Hf-176 (5)
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iron
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Fe-56/Fe-54 (2)
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-
ferrous iron (1)
-
-
lead
-
Pb-206/Pb-204 (11)
-
Pb-207/Pb-204 (9)
-
Pb-207/Pb-206 (1)
-
Pb-208/Pb-204 (7)
-
Pb-210 (5)
-
U-238/Pb-204 (1)
-
-
manganese (24)
-
mercury (16)
-
molybdenum (16)
-
nickel (9)
-
niobium (5)
-
platinum group
-
iridium (11)
-
osmium
-
Os-188/Os-187 (5)
-
Re-187/Os-188 (1)
-
-
palladium (1)
-
palladium ores (3)
-
platinum (2)
-
platinum ores (10)
-
-
precious metals (1)
-
rare earths
-
cerium (6)
-
dysprosium (1)
-
europium (3)
-
lanthanum (3)
-
lutetium (1)
-
neodymium
-
Nd-144/Nd-143 (21)
-
Sm-147/Nd-144 (3)
-
-
promethium (1)
-
samarium
-
Sm-147/Nd-144 (3)
-
-
scandium (1)
-
terbium (1)
-
ytterbium (3)
-
yttrium (5)
-
-
rhenium
-
Re-187/Os-188 (1)
-
-
silver (6)
-
tantalum (3)
-
technetium (1)
-
thallium (1)
-
tin (3)
-
titanium (16)
-
tungsten (1)
-
vanadium (6)
-
zinc (20)
-
zirconium (9)
-
-
metamorphic rocks
-
amphibolites (6)
-
eclogite (3)
-
gneisses
-
biotite gneiss (1)
-
granite gneiss (1)
-
-
granulites (3)
-
hornfels (4)
-
impactites
-
impact breccia (2)
-
-
marbles (2)
-
metaigneous rocks
-
meta-andesite (1)
-
metabasalt (6)
-
metabasite (2)
-
metadiabase (1)
-
metagabbro (1)
-
metagranite (5)
-
metakomatiite (1)
-
metaperidotite (1)
-
metarhyolite (1)
-
metatuff (1)
-
serpentinite (4)
-
-
metaplutonic rocks (6)
-
metasedimentary rocks
-
metaconglomerate (1)
-
metagraywacke (2)
-
metapelite (8)
-
metasandstone (1)
-
-
metasomatic rocks
-
greisen (2)
-
serpentinite (4)
-
skarn (4)
-
-
metavolcanic rocks (10)
-
migmatites (8)
-
mylonites
-
pseudotachylite (2)
-
-
phyllites (1)
-
quartzites (12)
-
schists
-
biotite schist (1)
-
greenschist (1)
-
greenstone (7)
-
tourmalinite (2)
-
-
slates (10)
-
-
metamorphism (122)
-
metasomatism (90)
-
meteorites
-
iron meteorites (3)
-
stony irons
-
pallasite
-
Brenham Meteorite (1)
-
-
-
stony meteorites
-
achondrites
-
aubrite
-
Norton County Meteorite (3)
-
-
-
chondrites
-
enstatite chondrites
-
EH chondrites
-
Abee Meteorite (1)
-
-
-
ordinary chondrites
-
L chondrites (1)
-
-
-
-
-
meteorology (3)
-
Mexico
-
Baja California (2)
-
Baja California Mexico (3)
-
Chiapas Mexico (1)
-
Chihuahua Mexico
-
Sierra Pena Blanca (1)
-
-
Coahuila Mexico
-
Parras Basin (1)
-
-
Colorado River delta (3)
-
Durango Mexico (2)
-
Jalisco Mexico (1)
-
La Popa Basin (3)
-
Nuevo Leon Mexico (4)
-
Sabinas Basin (6)
-
San Luis Potosi Mexico (1)
-
Sierra Madre Occidental (1)
-
Sierra Madre Oriental (2)
-
Sonora Mexico (3)
-
Tabasco Mexico (1)
-
Tamaulipas Mexico (1)
-
Zacatecas Mexico (1)
-
-
micropaleontology (11)
-
mineral deposits, genesis (271)
-
mineral exploration (73)
-
mineral resources (7)
-
mineralogy (316)
-
minerals (178)
-
mining geology (20)
-
Mohorovicic discontinuity (8)
-
Moon (2)
-
mud volcanoes (1)
-
museums (9)
-
nitrogen
-
N-15/N-14 (4)
-
-
noble gases
-
argon
-
Ar-40/Ar-36 (2)
-
-
helium
-
He-3 (1)
-
He-4 (1)
-
He-4/He-3 (5)
-
-
krypton (1)
-
neon
-
Ne-20 (1)
-
Ne-21 (2)
-
Ne-22/Ne-20 (1)
-
-
radon
-
Rn-222 (2)
-
-
-
nodules (10)
-
North America
-
Appalachian Basin (22)
-
Appalachians
-
Appalachian Plateau (1)
-
Blue Ridge Province (1)
-
Cumberland Plateau (1)
-
Northern Appalachians (1)
-
Piedmont (1)
-
Southern Appalachians (4)
-
-
Basin and Range Province
-
Great Basin (6)
-
-
Canadian Shield
-
Churchill Province
-
Hearne Province (2)
-
-
Grenville Province (5)
-
Southern Province (8)
-
Superior Province
-
English River Belt (1)
-
Quetico Belt (14)
-
Uchi Subprovince (1)
-
Wabigoon Belt (17)
-
Wawa Belt (7)
-
-
-
Chihuahua tectonic belt (1)
-
Chihuahuan Desert (6)
-
Dakota Aquifer (3)
-
Detroit River (1)
-
Eastern Overthrust Belt (1)
-
Great Lakes
-
Lake Michigan (1)
-
Lake Superior (14)
-
-
Great Lakes region (47)
-
Great Plains
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Northern Great Plains (36)
-
Southern Great Plains (37)
-
-
Grenville Front (4)
-
Gulf Coastal Plain (791)
-
Hueco Bolson (4)
-
Keweenawan Rift (34)
-
Lake of the Woods (1)
-
Lake of the Woods region (1)
-
Lake Superior region (37)
-
Mexicali Valley (1)
-
Michigan Basin (12)
-
Mississippi River basin (5)
-
Missouri River basin (2)
-
Niagara Falls (1)
-
North American Cordillera
-
Canadian Cordillera (2)
-
-
North American Craton (8)
-
Pedregosa Basin (4)
-
Rainy River (5)
-
Red River of the North (1)
-
Rio Grande Depression (2)
-
Rio Grande Rift (12)
-
Rocky Mountains
-
Central Rocky Mountains (2)
-
Northern Rocky Mountains (15)
-
Southern Rocky Mountains (8)
-
U. S. Rocky Mountains
-
Absaroka Range
-
Beartooth Mountains (2)
-
-
Bighorn Mountains (2)
-
Laramie Mountains (6)
-
Little Belt Mountains (1)
-
Medicine Bow Mountains (3)
-
Sangre de Cristo Mountains (9)
-
Sawatch Range (1)
-
Spanish Peaks (5)
-
Uinta Mountains (1)
-
Wasatch Range (2)
-
Wet Mountains (4)
-
Wind River Range (1)
-
-
-
Rocky Mountains foreland (2)
-
Saganaga Lake (1)
-
Saint Elias Mountains (1)
-
Sonoran Desert (4)
-
Sweetgrass Arch (3)
-
Transcontinental Arch (11)
-
Western Canada Sedimentary Basin (5)
-
Western Interior
-
Western Interior Seaway (63)
-
-
Western Overthrust Belt (6)
-
Williston Basin (160)
-
Yakutat Terrane (1)
-
Yukon River (1)
-
Yukon-Tanana Terrane (1)
-
-
Northern Hemisphere (1)
-
nuclear facilities (4)
-
ocean basins (5)
-
ocean circulation (3)
-
Ocean Drilling Program
-
Leg 171B
-
ODP Site 1050 (1)
-
ODP Site 1052 (1)
-
-
-
ocean floors (23)
-
ocean waves (7)
-
Oceania
-
Melanesia (1)
-
Micronesia
-
Caroline Islands
-
Palau (1)
-
-
Mariana Islands
-
Northern Mariana Islands (1)
-
-
Marshall Islands
-
Enewetak Atoll (1)
-
-
-
Polynesia
-
Hawaii
-
Honolulu County Hawaii
-
Oahu (1)
-
-
-
-
-
oceanography (57)
-
oil and gas fields (788)
-
orogeny (103)
-
oxygen
-
dissolved oxygen (1)
-
O-16 (1)
-
O-17/O-16 (1)
-
O-18 (4)
-
O-18/O-16 (188)
-
-
Pacific Ocean
-
Central Pacific (1)
-
East Pacific
-
Northeast Pacific
-
Cascadia Basin (1)
-
Clarion fracture zone (1)
-
Gulf of Alaska (1)
-
Gulf of California (2)
-
-
-
Equatorial Pacific (1)
-
North Pacific
-
Northeast Pacific
-
Cascadia Basin (1)
-
Clarion fracture zone (1)
-
Gulf of Alaska (1)
-
Gulf of California (2)
-
-
-
South Pacific
-
Southwest Pacific
-
Coral Sea
-
Great Barrier Reef (2)
-
-
-
-
West Pacific
-
Southwest Pacific
-
Coral Sea
-
Great Barrier Reef (2)
-
-
-
-
-
paleobotany (76)
-
paleoclimatology (247)
-
paleoecology (399)
-
paleogeography (310)
-
paleomagnetism (88)
-
paleontology (1341)
-
Paleozoic
-
Arbuckle Group (51)
-
Bedford Shale (1)
-
Berea Sandstone (1)
-
Bird Spring Formation (2)
-
Cambrian
-
Acadian (1)
-
Glen Mountains Complex (1)
-
Lower Cambrian (6)
-
Middle Cambrian
-
Marjum Formation (2)
-
Mount Scott Granite (3)
-
-
Tapeats Sandstone (1)
-
Upper Cambrian
-
Bonneterre Formation (42)
-
Copper Ridge Dolomite (1)
-
Eau Claire Formation (5)
-
Franconia Formation (4)
-
Furongian
-
Jiangshanian (1)
-
-
Galesville Sandstone (2)
-
Lamotte Sandstone (18)
-
Maynardville Limestone (1)
-
Mount Simon Sandstone (7)
-
Orr Formation (1)
-
Reagan Sandstone (2)
-
Steptoean (3)
-
Timbered Hills Group (2)
-
Trempealeauan (4)
-
Wilberns Formation (11)
-
Wonewoc Formation (1)
-
-
-
Carboniferous
-
Bartlesville Sand (8)
-
Burbank Sand (4)
-
Diamond Peak Formation (1)
-
Hale Formation (7)
-
Jackfork Group (23)
-
Johns Valley Formation (9)
-
Lower Carboniferous
-
Dinantian (13)
-
-
Middle Carboniferous (6)
-
Mississippian
-
Barnett Shale (78)
-
Boone Formation (13)
-
Borden Group (3)
-
Chainman Shale (1)
-
Charles Formation (11)
-
Harrodsburg Limestone (4)
-
Lower Mississippian
-
Chappel Limestone (4)
-
Chouteau Limestone (4)
-
Cuyahoga Formation (1)
-
Fort Payne Formation (4)
-
Kinderhookian (15)
-
Lodgepole Formation (14)
-
Osagian
-
Burlington Limestone (47)
-
Keokuk Limestone (24)
-
-
Tournaisian
-
upper Tournaisian (2)
-
-
-
Madison Group (24)
-
Middle Mississippian
-
Visean
-
upper Visean (1)
-
-
-
Mission Canyon Limestone (29)
-
Ramp Creek Formation (2)
-
Stanley Group (18)
-
Upper Mississippian
-
Chesterian
-
Aux Vases Sandstone (1)
-
Golconda Formation (1)
-
Imo Formation (18)
-
Renault Formation (2)
-
-
Fayetteville Formation (26)
-
Greenbrier Limestone (1)
-
Hartselle Sandstone (1)
-
Heath Formation (3)
-
Meramecian
-
Saint Louis Limestone (10)
-
Sainte Genevieve Limestone (7)
-
Salem Limestone (6)
-
Warsaw Formation (14)
-
-
Parkwood Formation (2)
-
Pennington Formation (3)
-
Pitkin Limestone (7)
-
Pride Mountain Formation (1)
-
Serpukhovian (1)
-
-
Valmeyeran (1)
-
Windsor Group (1)
-
-
Namurian (5)
-
Pennsylvanian
-
Excello Shale (2)
-
Francis Creek Shale (1)
-
Hermosa Group (1)
-
Lower Pennsylvanian
-
Bashkirian (3)
-
Caseyville Formation (4)
-
Haymond Formation (10)
-
Morrowan
-
Bloyd Formation (8)
-
-
-
Mansfield Formation (1)
-
Marble Falls Group (17)
-
Middle Pennsylvanian
-
Atokan
-
Atoka Formation (37)
-
-
Breathitt Formation (1)
-
Carbondale Formation (5)
-
Desmoinesian
-
Boggy Shale (3)
-
Cabaniss Formation (2)
-
Cherokee Group (25)
-
Hartshorne Sandstone (3)
-
Krebs Group (3)
-
Labette Shale (1)
-
Marmaton Group (6)
-
Spiro Sandstone (3)
-
Wewoka Formation (5)
-
-
Dugger Formation (1)
-
Kanawha Formation (1)
-
Kewanee Group (1)
-
Moscovian (4)
-
Paradox Formation (1)
-
Spoon Formation (1)
-
Staunton Formation (2)
-
Tradewater Formation (2)
-
-
Morrow Formation (26)
-
Red Fork Sandstone (12)
-
Smithwick Shale (2)
-
Springfield Coal Member (1)
-
Strawn Series (22)
-
Upper Pennsylvanian
-
Canyon Group (16)
-
Cisco Group (20)
-
Gzhelian (5)
-
Holder Formation (3)
-
Kasimovian (4)
-
Missourian
-
Kansas City Group (20)
-
Lansing Group (22)
-
Plattsburg Limestone (6)
-
Pleasanton Group (1)
-
Rock Lake Shale Member (7)
-
Seminole Formation (2)
-
Stanton Formation (9)
-
Wann Formation (3)
-
Wyandotte Limestone (2)
-
-
Virgilian
-
Douglas Group (10)
-
Lawrence Formation (5)
-
Lecompton Limestone (2)
-
Oread Limestone (2)
-
Plattsmouth Limestone Member (5)
-
Shawnee Group (9)
-
Tonganoxie Sandstone (4)
-
Wabaunsee Group (5)
-
-
-
Wapanucka Limestone (5)
-
Westerly Granite (1)
-
-
Springer Formation (7)
-
Tesnus Formation (9)
-
Upper Carboniferous
-
Millstone Grit (1)
-
Stephanian (3)
-
Westphalian (7)
-
-
-
Casper Formation (2)
-
Chattanooga Shale (7)
-
Collier Shale (3)
-
Deadwood Formation (11)
-
Devonian
-
Cedar City Formation (4)
-
Guilmette Formation (1)
-
Lower Devonian
-
Emsian (2)
-
Gedinnian (1)
-
Helderbergian (1)
-
Lochkovian (3)
-
-
Middle Devonian
-
Cedar Valley Formation (8)
-
Couvinian (1)
-
Eifelian (2)
-
Givetian
-
upper Givetian (1)
-
-
Hamilton Group (1)
-
Jeffersonville Limestone (1)
-
Marcellus Shale (7)
-
Moscow Formation (1)
-
Onondaga Limestone (1)
-
Prairie Evaporite (3)
-
Saint Laurent Limestone (2)
-
Sylvania Formation (1)
-
Winnipegosis Formation (7)
-
-
Thirtyone Formation (10)
-
Traverse Group (1)
-
Upper Devonian
-
Birdbear Formation (3)
-
Duperow Formation (15)
-
Famennian
-
Wabamun Group (1)
-
-
Frasnian
-
Leduc Formation (1)
-
-
Lime Creek Formation (6)
-
Nisku Formation (1)
-
Ohio Shale (1)
-
Palliser Formation (1)
-
-
Waterways Formation (1)
-
-
Dunkard Group (1)
-
Hunton Group (28)
-
Knox Group (3)
-
Laborcita Formation (3)
-
lower Paleozoic
-
Cape Phillips Formation (2)
-
Conococheague Formation (1)
-
-
Magdalena Group (1)
-
Manhattan Formation (1)
-
middle Paleozoic (2)
-
Minnelusa Formation (14)
-
New Albany Shale (3)
-
Ordovician
-
Antelope Valley Limestone (1)
-
Eureka Quartzite (1)
-
Lexington Limestone (1)
-
Lower Ordovician
-
Arenigian (1)
-
Beekmantown Group (1)
-
El Paso Group (4)
-
Ellenburger Group (44)
-
Fillmore Formation (1)
-
Ibexian (3)
-
Kindblade Formation (5)
-
Manitou Formation (6)
-
Oneota Dolomite (2)
-
Prairie du Chien Group (3)
-
Shakopee Formation (2)
-
Smithville Formation (1)
-
-
Middle Ordovician
-
Bigfork Chert (1)
-
Blackriverian (3)
-
Bromide Formation (32)
-
Champlainian (3)
-
Chazyan (1)
-
Darriwilian (2)
-
Decorah Shale (20)
-
Deicke Bentonite Bed (6)
-
Everton Formation (3)
-
Galena Dolomite (20)
-
Glenwood Shale (3)
-
Millbrig Bentonite Bed (3)
-
Platteville Formation (16)
-
Saint Peter Sandstone (13)
-
Simpson Group (29)
-
Stones River Group (1)
-
Whiterockian (2)
-
Winnipeg Formation (5)
-
Woods Hollow Shale (3)
-
-
Montoya Group (9)
-
Trenton Group (5)
-
Upper Ordovician
-
Caradocian (3)
-
Cincinnatian
-
Maysvillian (2)
-
Richmondian (5)
-
-
Fernvale Formation (4)
-
Katian (4)
-
Kope Formation (1)
-
Maquoketa Formation (36)
-
Mohawkian (1)
-
Red River Formation (20)
-
Sandbian (3)
-
Trentonian (7)
-
Whitewater Formation (1)
-
-
Utica Shale (2)
-
Viola Limestone (25)
-
Womble Shale (2)
-
-
Permian
-
Americus Limestone Member (3)
-
Blaine Formation (12)
-
Castile Formation (14)
-
Chase Group (6)
-
Cottonwood Limestone (3)
-
Council Grove Group (11)
-
Cutler Formation (5)
-
Eskridge Shale (2)
-
Fort Riley Limestone (2)
-
Glorieta Sandstone (3)
-
Guadalupian
-
Bell Canyon Formation (20)
-
Brushy Canyon Formation (15)
-
Capitan Formation (23)
-
Capitanian (2)
-
Cherry Canyon Formation (14)
-
Delaware Mountain Group (10)
-
Grayburg Formation (16)
-
Queen Formation (6)
-
Roadian (2)
-
Seven Rivers Formation (7)
-
Tansill Formation (14)
-
Wordian (3)
-
-
Hennessey Formation (10)
-
Hughes Creek Shale (5)
-
Hutchinson Salt Member (5)
-
Kaibab Formation (3)
-
Lower Permian
-
Abo Formation (6)
-
Cherry Canyon Formation (14)
-
Cisuralian
-
Artinskian (3)
-
Asselian (6)
-
Kungurian (7)
-
Sakmarian (3)
-
-
Leonardian
-
Bone Spring Limestone (16)
-
Clear Fork Group (22)
-
-
Opeche Shale (1)
-
Wichita Group (11)
-
Wolfcampian
-
Hueco Limestone (4)
-
-
-
Lyons Sandstone (5)
-
Middle Permian (23)
-
Newcastle Coal Measures (1)
-
Park City Formation (1)
-
Phosphoria Formation (2)
-
Red Eagle Limestone (1)
-
Rotliegendes (1)
-
Rustler Formation (6)
-
Stearns Shale (2)
-
Stone Corral Formation (5)
-
Upper Permian
-
Kazanian (2)
-
Lopingian (2)
-
Permian-Triassic boundary (2)
-
Salado Formation (17)
-
Tatarian (2)
-
Zechstein (3)
-
-
Wellington Formation (21)
-
Wreford Limestone (2)
-
Yates Formation (13)
-
Yeso Formation (6)
-
-
Read Bay Formation (3)
-
Sauk Sequence (5)
-
Shoo Fly Complex (1)
-
Silurian
-
Bainbridge Formation (4)
-
Fusselman Dolomite (4)
-
Henryhouse Formation (10)
-
Lockport Formation (3)
-
Lower Silurian
-
Alexandrian (2)
-
Brassfield Formation (1)
-
Llandovery
-
Interlake Formation (6)
-
Rhuddanian (2)
-
-
Tuscarora Formation (1)
-
Wenlock
-
Sheinwoodian (1)
-
-
-
Middle Silurian
-
Clinton Group (2)
-
Keefer Sandstone (1)
-
Racine Dolomite (3)
-
Roberts Mountains Formation (1)
-
Waldron Shale (3)
-
-
Niagaran (9)
-
Upper Silurian
-
Ludlow (6)
-
Pridoli (1)
-
Salina Group (1)
-
Wristen Formation (2)
-
-
-
Tensleep Sandstone (2)
-
Tippecanoe Sequence (1)
-
upper Paleozoic
-
Admire Group (5)
-
Antrim Shale (1)
-
Arkansas Novaculite (9)
-
Bakken Formation (58)
-
Fountain Formation (9)
-
Kaskaskia Sequence (4)
-
-
Weber Sandstone (1)
-
Woodford Shale (71)
-
-
palynology (11)
-
palynomorphs
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-
Pierce County North Dakota (1)
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Ramsey County North Dakota (1)
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-
Renville County North Dakota (7)
-
Richland County North Dakota (2)
-
Rolette County North Dakota (1)
-
Sargent County North Dakota (1)
-
Sheridan County North Dakota (1)
-
Sioux County North Dakota (2)
-
Slope County North Dakota (18)
-
Stark County North Dakota (8)
-
Steele County North Dakota (1)
-
Stutsman County North Dakota (1)
-
Towner County North Dakota (1)
-
Traill County North Dakota (1)
-
Ward County North Dakota (3)
-
Williams County North Dakota (4)
-
-
Ogallala Aquifer (8)
-
Ohio
-
Coshocton County Ohio (1)
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Hamilton County Ohio
-
Cincinnati Ohio (5)
-
-
Jackson County Ohio (1)
-
Lawrence County Ohio (1)
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Morrow County Ohio (1)
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Muskingum County Ohio (2)
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Perry County Ohio (1)
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Ross County Ohio (1)
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Warren County Ohio (1)
-
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Ohio River (5)
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Ohio River valley (4)
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Oklahoma
-
Adair County Oklahoma (5)
-
Alfalfa County Oklahoma (2)
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Arbuckle Anticline (2)
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Arbuckle Mountains (71)
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Arbuckle Uplift (1)
-
Atoka County Oklahoma (4)
-
Beaver County Oklahoma (6)
-
Beckham County Oklahoma (8)
-
Blaine County Oklahoma (14)
-
Bryan County Oklahoma (3)
-
Caddo County Oklahoma (28)
-
Canadian County Oklahoma (9)
-
Carter County Oklahoma (43)
-
Cherokee County Oklahoma (6)
-
Cimarron County Oklahoma (7)
-
Cleveland County Oklahoma
-
Norman Oklahoma (5)
-
-
Coal County Oklahoma (6)
-
Comanche County Oklahoma (31)
-
Cotton County Oklahoma (1)
-
Craig County Oklahoma (5)
-
Creek County Oklahoma (4)
-
Criner Hills (10)
-
Custer County Oklahoma (7)
-
Delaware County Oklahoma (2)
-
Dewey County Oklahoma (5)
-
Ellis County Oklahoma (1)
-
Garfield County Oklahoma (8)
-
Garvin County Oklahoma (8)
-
Grady County Oklahoma (14)
-
Grant County Oklahoma (4)
-
Greer County Oklahoma (4)
-
Harmon County Oklahoma (1)
-
Harper County Oklahoma (1)
-
Haskell County Oklahoma (1)
-
Hughes County Oklahoma (1)
-
Jackson County Oklahoma (4)
-
Johnston County Oklahoma (9)
-
Kay County Oklahoma (17)
-
Kingfisher County Oklahoma (6)
-
Kiowa County Oklahoma (18)
-
Latimer County Oklahoma (7)
-
Le Flore County Oklahoma (5)
-
Lincoln County Oklahoma (8)
-
Logan County Oklahoma (13)
-
Love County Oklahoma (3)
-
Major County Oklahoma
-
Ames Structure (1)
-
-
Marshall County Oklahoma (3)
-
Mayes County Oklahoma (5)
-
McClain County Oklahoma (3)
-
McCurtain County Oklahoma (4)
-
McIntosh County Oklahoma (3)
-
Meers Fault (14)
-
Murray County Oklahoma (28)
-
Muskogee County Oklahoma (1)
-
Noble County Oklahoma (7)
-
Nowata County Oklahoma (3)
-
Okfuskee County Oklahoma (2)
-
Oklahoma County Oklahoma (6)
-
Oklahoma Panhandle (13)
-
Okmulgee County Oklahoma (5)
-
Ottawa County Oklahoma
-
Picher Oklahoma (3)
-
-
Pawnee County Oklahoma (14)
-
Payne County Oklahoma
-
Stillwater Oklahoma (1)
-
-
Pittsburg County Oklahoma (12)
-
Pontotoc County Oklahoma (27)
-
Pottawatomie County Oklahoma (4)
-
Pushmataha County Oklahoma (3)
-
Roger Mills County Oklahoma (4)
-
Rogers County Oklahoma (2)
-
Seminole County Oklahoma (7)
-
Sequoyah County Oklahoma (1)
-
Stephens County Oklahoma (6)
-
Texas County Oklahoma (4)
-
Tillman County Oklahoma (8)
-
Tulsa County Oklahoma
-
Tulsa Oklahoma (5)
-
-
Wagoner County Oklahoma (2)
-
Washington County Oklahoma (10)
-
Washita County Oklahoma (7)
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Wichita Mountains (51)
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Wichita Uplift (11)
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Woods County Oklahoma (4)
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Woodward County Oklahoma (5)
-
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Oregon
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Willamette Valley (1)
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Orogrande Basin (2)
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Ozark Mountains (60)
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Palo Duro Basin (44)
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Pennsylvania
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Allegheny County Pennsylvania (1)
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Dauphin County Pennsylvania
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Harrisburg Pennsylvania (1)
-
-
Fayette County Pennsylvania (1)
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Fulton County Pennsylvania (1)
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Lancaster County Pennsylvania (1)
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Lycoming County Pennsylvania (1)
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Perry County Pennsylvania (1)
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Potomac River (1)
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Powder River basin (29)
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Reelfoot Rift (29)
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Sabine Uplift (14)
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Sevier orogenic belt (6)
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South Carolina
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Charleston County South Carolina
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Charleston South Carolina (5)
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-
-
South Dakota
-
Badlands National Park (20)
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Brule County South Dakota (6)
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Buffalo County South Dakota (7)
-
Butte County South Dakota (7)
-
Charles Mix County South Dakota (3)
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Clay County South Dakota (1)
-
Corson County South Dakota (7)
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Custer County South Dakota (42)
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Davison County South Dakota (1)
-
Dewey County South Dakota (6)
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Fall River County South Dakota (12)
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Grant County South Dakota (2)
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Gregory County South Dakota (4)
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Harding County South Dakota (6)
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Harney Peak Granite (12)
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Hughes County South Dakota (5)
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Hyde County South Dakota (3)
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Jackson County South Dakota (1)
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Lake County South Dakota (1)
-
Lawrence County South Dakota (23)
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Lyman County South Dakota (6)
-
Meade County South Dakota (8)
-
Mellette County South Dakota (1)
-
Minnehaha County South Dakota (1)
-
Moody County South Dakota (1)
-
Pennington County South Dakota
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Rapid City South Dakota (3)
-
-
Roberts County South Dakota (1)
-
Shannon County South Dakota (7)
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Stanley County South Dakota (1)
-
Todd County South Dakota (1)
-
Tripp County South Dakota (2)
-
Union County South Dakota (3)
-
Walworth County South Dakota (1)
-
Yankton County South Dakota (3)
-
Ziebach County South Dakota (2)
-
-
South Platte River (2)
-
South Platte River valley (2)
-
Southern Oklahoma Aulacogen (8)
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Southern U.S. (14)
-
Southwestern U.S. (116)
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Tennessee
-
Benton County Tennessee (1)
-
Davidson County Tennessee
-
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-
-
Decatur County Tennessee (1)
-
Dyer County Tennessee (1)
-
Grundy County Tennessee (1)
-
Hamilton County Tennessee (1)
-
Haywood County Tennessee (1)
-
Jefferson County Tennessee (1)
-
Lake County Tennessee (1)
-
Lauderdale County Tennessee (1)
-
Madison County Tennessee (1)
-
Obion County Tennessee (2)
-
Reelfoot Lake (2)
-
Rutherford County Tennessee (1)
-
Shelby County Tennessee
-
Memphis Tennessee (36)
-
-
Tipton County Tennessee (3)
-
Wilson County Tennessee (1)
-
-
Tennessee River (1)
-
Texas
-
Amarillo Uplift (7)
-
Anderson County Texas (3)
-
Andrews County Texas (20)
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Angelina County Texas (1)
-
Aransas County Texas (4)
-
Archer County Texas (8)
-
Armstrong County Texas (3)
-
Atascosa County Texas (7)
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Balcones fault zone (12)
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Bandera County Texas (1)
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Bastrop County Texas (15)
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Baylor County Texas (19)
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Bee County Texas (8)
-
Bell County Texas (7)
-
Bexar County Texas
-
San Antonio Texas (8)
-
-
Blanco County Texas (9)
-
Borden County Texas (6)
-
Bosque County Texas (1)
-
Brazoria County Texas (27)
-
Brazos County Texas (17)
-
Brazos River (37)
-
Brewster County Texas
-
Big Bend National Park (46)
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Terlingua Texas (3)
-
-
Briscoe County Texas (4)
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Brown County Texas (13)
-
Burleson County Texas (10)
-
Burnet County Texas (23)
-
Caldwell County Texas (8)
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Calhoun County Texas
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Matagorda Island (1)
-
-
Callahan County Texas (2)
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Cameron County Texas (1)
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Camp County Texas (1)
-
Cass County Texas (2)
-
Chambers County Texas (15)
-
Cherokee County Texas (4)
-
Christmas Mountains (4)
-
Clay County Texas (1)
-
Cochran County Texas (4)
-
Coke County Texas (9)
-
Coleman County Texas (2)
-
Collin County Texas (4)
-
Colorado County Texas (2)
-
Comal County Texas (14)
-
Comanche County Texas (2)
-
Concho County Texas (6)
-
Cooke County Texas (1)
-
Coryell County Texas (1)
-
Cottle County Texas (1)
-
Crane County Texas (17)
-
Crockett County Texas (8)
-
Crosby County Texas (6)
-
Culberson County Texas
-
Van Horn Texas (1)
-
-
Dalhart Basin (7)
-
Dallam County Texas (1)
-
Dallas County Texas
-
Dallas Texas (28)
-
-
Davis Mountains (9)
-
Dawson County Texas (4)
-
Deaf Smith County Texas (7)
-
Delta County Texas (1)
-
Denton County Texas (15)
-
DeWitt County Texas (9)
-
Dickens County Texas (1)
-
Dimmit County Texas (4)
-
Donley County Texas (4)
-
Duval County Texas (12)
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East Texas (53)
-
East Texas Basin (39)
-
East Texas Field (7)
-
Eastland County Texas (7)
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Ector County Texas
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Odessa Craters (1)
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Odessa Texas (3)
-
-
Edwards Aquifer (8)
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Edwards County Texas (1)
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Edwards Plateau (17)
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El Paso County Texas
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El Paso Texas (1)
-
-
Ellis County Texas (4)
-
Erath County Texas (1)
-
Falls County Texas (8)
-
Fannin County Texas (3)
-
Fayette County Texas (4)
-
Fisher County Texas (2)
-
Floyd County Texas (3)
-
Foard County Texas (5)
-
Fort Bend County Texas (3)
-
Fort Worth Basin (75)
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Franklin County Texas (1)
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Freestone County Texas (5)
-
Frio County Texas (3)
-
Gaines County Texas (13)
-
Galveston Bay (9)
-
Galveston County Texas
-
Galveston Island (18)
-
Galveston Texas (10)
-
-
Garza County Texas (5)
-
Gillespie County Texas (11)
-
Glasscock County Texas (5)
-
Goliad County Texas (3)
-
Gonzales County Texas (6)
-
Grayson County Texas (7)
-
Gregg County Texas (2)
-
Grimes County Texas (4)
-
Guadalupe County Texas (2)
-
Hale County Texas (3)
-
Hall County Texas (1)
-
Hamilton County Texas (2)
-
Hansford County Texas (1)
-
Hardeman County Texas (13)
-
Hardin County Texas (4)
-
Harris County Texas
-
Houston Texas (17)
-
-
Harrison County Texas (10)
-
Hartley County Texas (2)
-
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-
Hays County Texas (3)
-
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-
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-
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-
Hill County Texas (6)
-
Hockley County Texas (5)
-
Hood County Texas (10)
-
Hopkins County Texas (4)
-
Houston County Texas (10)
-
Howard County Texas (7)
-
Hudspeth County Texas
-
Quitman Mountains (2)
-
-
Hunt County Texas (2)
-
Hutchinson County Texas (2)
-
Jack County Texas (18)
-
Jackson County Texas (8)
-
Jasper County Texas (1)
-
Jeff Davis County Texas (9)
-
Jefferson County Texas
-
Beaumont Texas (4)
-
-
Jim Hogg County Texas (6)
-
Jim Wells County Texas (3)
-
Johnson County Texas (5)
-
Jones County Texas (2)
-
Karnes County Texas (22)
-
Kaufman County Texas (1)
-
Kendall County Texas (2)
-
Kenedy County Texas (3)
-
Kent County Texas (1)
-
Kerr County Texas (2)
-
Kimble County Texas (5)
-
King County Texas (8)
-
Kinney County Texas (3)
-
Kleberg County Texas (5)
-
Knox County Texas (5)
-
La Salle County Texas (10)
-
Lamar County Texas (1)
-
Lamb County Texas (2)
-
Lampasas County Texas (2)
-
Lavaca County Texas (8)
-
Lee County Texas (5)
-
Leon County Texas (9)
-
Liberty County Texas (6)
-
Limestone County Texas (2)
-
Lipscomb County Texas (1)
-
Live Oak County Texas (10)
-
Llano County Texas
-
Llano Texas (3)
-
-
Llano Uplift (30)
-
Loving County Texas (8)
-
Lubbock County Texas
-
Lubbock Lake (3)
-
Lubbock Texas (5)
-
-
Lynn County Texas (6)
-
Madison County Texas (1)
-
Marathon Geosyncline (11)
-
Marfa Basin (7)
-
Martin County Texas (8)
-
Mason County Texas (12)
-
Matagorda Bay (8)
-
Matagorda County Texas (14)
-
Maverick County Texas (6)
-
McCulloch County Texas (7)
-
McElroy Field (6)
-
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-
Waco Texas (11)
-
-
McMullen County Texas (6)
-
Medina County Texas (4)
-
Midland Basin (71)
-
Midland County Texas
-
Midland Texas (3)
-
-
Milam County Texas (8)
-
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-
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-
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-
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-
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-
Nacogdoches County Texas (6)
-
Navarro County Texas (5)
-
Newton County Texas (3)
-
Nolan County Texas (4)
-
Nueces County Texas (31)
-
Nueces River (3)
-
Ochiltree County Texas (4)
-
Oldham County Texas (4)
-
Orange County Texas (4)
-
Palo Pinto County Texas (6)
-
Panola County Texas (11)
-
Parker County Texas (11)
-
Pecos County Texas (35)
-
Polk County Texas (1)
-
Potter County Texas
-
Amarillo Texas (4)
-
-
Presidio County Texas (23)
-
Randall County Texas (6)
-
Reagan County Texas (14)
-
Real County Texas (1)
-
Reeves County Texas (26)
-
Refugio County Texas (8)
-
Rita Blanca Lake (1)
-
Roberts County Texas (2)
-
Robertson County Texas (3)
-
Runnels County Texas (5)
-
Rusk County Texas (11)
-
Sabine County Texas (3)
-
San Augustine County Texas (1)
-
San Jacinto County Texas (4)
-
San Marcos Arch (12)
-
San Patricio County Texas (11)
-
San Saba County Texas (8)
-
Schleicher County Texas (2)
-
Scurry County Texas (12)
-
Shackelford County Texas (2)
-
Shelby County Texas (5)
-
Sherman County Texas (1)
-
Smith County Texas (7)
-
Somervell County Texas (3)
-
Starr County Texas (2)
-
Stephens County Texas (8)
-
Sterling County Texas (2)
-
Stonewall County Texas (4)
-
Sutton County Texas (3)
-
Swisher County Texas (7)
-
Tarrant County Texas
-
Fort Worth Texas (17)
-
-
Taylor County Texas
-
Abilene Texas (1)
-
-
Terrell County Texas (14)
-
Terry County Texas (6)
-
Texas Panhandle (32)
-
Throckmorton County Texas (2)
-
Tom Green County Texas (1)
-
Travis County Texas
-
Austin Texas (13)
-
-
Trinity Aquifer (3)
-
Tyler County Texas (1)
-
Upshur County Texas (3)
-
Upton County Texas (9)
-
Uvalde County Texas (7)
-
Val Verde Basin (16)
-
Val Verde County Texas
-
Del Rio Texas (1)
-
-
Van Zandt County Texas (2)
-
Victoria County Texas (8)
-
Walker County Texas (1)
-
Waller County Texas (2)
-
Ward County Texas (13)
-
Webb County Texas (15)
-
West Texas (191)
-
Wharton County Texas (1)
-
Wheeler County Texas (3)
-
Wichita County Texas (6)
-
Wilbarger County Texas (5)
-
Willacy County Texas (1)
-
Williamson County Texas (5)
-
Wilson County Texas (2)
-
Winkler County Texas (18)
-
Wise County Texas (28)
-
Wood County Texas (5)
-
Yoakum County Texas (3)
-
Young County Texas (8)
-
Zapata County Texas (7)
-
Zavala County Texas (9)
-
-
Tombigbee River (1)
-
Trans-Pecos (69)
-
U. S. Rocky Mountains
-
Absaroka Range
-
Beartooth Mountains (2)
-
-
Bighorn Mountains (2)
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Laramie Mountains (6)
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-
Sangre de Cristo Mountains (9)
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Spanish Peaks (5)
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Wet Mountains (4)
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-
-
Uinta Basin (4)
-
Uncompahgre Uplift (2)
-
Utah
-
Cache County Utah (1)
-
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-
Drum Mountains (2)
-
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-
Grand County Utah
-
Moab Utah (1)
-
-
Hill Air Force Base (1)
-
Kaiparowits Plateau (1)
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Kane County Utah (2)
-
Millard County Utah
-
House Range (3)
-
-
Salt Lake County Utah
-
Salt Lake City Utah (2)
-
-
San Juan County Utah (3)
-
San Rafael Swell (1)
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Zion National Park (1)
-
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Vermont (3)
-
Virginia
-
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-
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-
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-
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-
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Wythe County Virginia (2)
-
-
Wabash Valley (11)
-
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-
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-
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-
Washington
-
Clallam County Washington (1)
-
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-
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-
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-
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-
Hanford Site (1)
-
King County Washington
-
Seattle Washington (3)
-
-
Lewis County Washington (1)
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Pacific County Washington (1)
-
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-
-
Washita River valley (2)
-
West Virginia
-
Harrison County West Virginia (1)
-
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Taylor County West Virginia (1)
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-
Western U.S. (40)
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Wiggins Arch (1)
-
Wisconsin
-
Adams County Wisconsin (1)
-
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-
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-
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-
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-
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-
Chippewa County Wisconsin (3)
-
Clark County Wisconsin (4)
-
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-
Crawford County Wisconsin (2)
-
Dane County Wisconsin (1)
-
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-
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-
Eau Claire County Wisconsin (5)
-
Grant County Wisconsin (7)
-
Iron County Wisconsin (4)
-
Jackson County Wisconsin (3)
-
Juneau County Wisconsin (1)
-
Kenosha County Wisconsin (1)
-
La Crosse County Wisconsin (1)
-
Lafayette County Wisconsin (5)
-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
-
Wyoming
-
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Shirley Basin (1)
-
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Converse County Wyoming (6)
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Uinta County Wyoming (2)
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Weston County Wyoming (7)
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Wind River Range (1)
-
-
Wyoming Province (9)
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Yavapai Province (7)
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-
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USSR (12)
-
volcanology (12)
-
waste disposal (106)
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water resources (27)
-
waterways (12)
-
weathering (76)
-
well-logging (218)
-
Western Hemisphere (1)
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X-ray analysis (10)
-
-
rock formations
-
Beaumont Formation (3)
-
Beaverhead Formation (1)
-
Davis Formation (10)
-
Deccan Traps (1)
-
Denver Formation (10)
-
Difunta Group (2)
-
Eagle Mills Formation (3)
-
Fort Union Formation (27)
-
Hume Formation (1)
-
Imperial Formation (1)
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J Sandstone (6)
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Jacobsville Sandstone (2)
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Little Falls Formation (1)
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Louann Salt (14)
-
Manning Formation (1)
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Maravillas Formation (1)
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Middle Run Formation (1)
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Oil Creek Formation (7)
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Potrerillos Formation (1)
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Raton Formation (4)
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arkose (6)
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