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Pb-208/Pb-204 (6)
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stable isotopes
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Be-10/Be-9 (1)
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C-13/C-12 (4)
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Hf-177/Hf-176 (3)
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Nd-144/Nd-143 (14)
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O-18/O-16 (7)
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Pb-206/Pb-204 (6)
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Pb-207/Pb-204 (5)
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Pb-208/Pb-204 (6)
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Sr-87/Sr-86 (13)
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-
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Lu/Hf (5)
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metals
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actinides (1)
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alkali metals
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sodium (1)
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alkaline earth metals
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beryllium
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Be-10/Be-9 (1)
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calcium (1)
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strontium
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Sr-87/Sr-86 (13)
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-
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chromium (1)
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hafnium
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Hf-177/Hf-176 (3)
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lead
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Pb-206/Pb-204 (6)
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Pb-207/Pb-204 (5)
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Pb-208/Pb-204 (6)
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nickel (1)
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platinum group
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platinum ores (1)
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precious metals (1)
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rare earths
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neodymium
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Nd-144/Nd-143 (14)
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-
-
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oxygen
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O-18/O-16 (7)
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sulfur (1)
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fossils
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Chordata
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Vertebrata
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Pisces
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Placodermi (1)
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-
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Graptolithina (2)
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Hemichordata (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda (1)
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Trilobitomorpha
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Trilobita (3)
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Brachiopoda (3)
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Cnidaria
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Anthozoa (1)
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Echinodermata
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Crinozoa
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Crinoidea (1)
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-
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Mollusca
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Cephalopoda
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Ammonoidea (1)
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Porifera
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Demospongea (1)
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Protista
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Foraminifera
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Fusulinina
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Fusulinidae (5)
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Textulariina (1)
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Radiolaria (3)
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-
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microfossils
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Conodonta (5)
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Fusulinina
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Fusulinidae (5)
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-
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palynomorphs
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acritarchs (2)
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Dinoflagellata (1)
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miospores
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pollen (1)
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-
-
Plantae
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algae
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Coccolithophoraceae (1)
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diatoms (1)
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nannofossils (1)
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-
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Pterobranchia (1)
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geochronology methods
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(U-Th)/He (5)
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Ar/Ar (28)
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exposure age (1)
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fission-track dating (17)
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He/He (1)
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K/Ar (12)
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Lu/Hf (5)
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optically stimulated luminescence (1)
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paleomagnetism (69)
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Pb/Pb (3)
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Rb/Sr (3)
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Sm/Nd (5)
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tephrochronology (2)
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Th/U (3)
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thermochronology (11)
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U/Pb (47)
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U/Th/Pb (2)
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geologic age
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Cenozoic
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Agbada Formation (1)
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Quaternary
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Holocene
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Atlantic (1)
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upper Holocene (2)
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Pleistocene
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lower Pleistocene
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Calabrian (1)
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middle Pleistocene (1)
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upper Pleistocene
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Devensian (1)
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Wisconsinan (1)
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-
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upper Quaternary (7)
-
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Saugus Formation (1)
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Tertiary
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Climax Porphyry (1)
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lower Tertiary (7)
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middle Tertiary (9)
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Neogene
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Bidahochi Formation (1)
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Miocene
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Columbia River Basalt Group (3)
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Crater Flat Tuff (1)
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Grande Ronde Basalt (1)
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Guantao Formation (1)
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lower Miocene
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Aquitanian (2)
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Burdigalian (2)
-
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middle Miocene (3)
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Paintbrush Tuff (2)
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Peach Springs Tuff (1)
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Tiva Canyon Member (1)
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Topopah Spring Member (2)
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upper Miocene
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Messinian (1)
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Puente Formation (1)
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Punchbowl Formation (1)
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Tortonian (1)
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-
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Ogallala Formation (2)
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Pliocene
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Cimmerian (1)
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lower Pliocene (1)
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upper Pliocene (2)
-
-
Salt Lake Formation (1)
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Sisquoc Formation (1)
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-
Paleogene
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Dongying Formation (2)
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Eocene
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Absaroka Supergroup (2)
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lower Eocene
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Thebes Formation (1)
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-
middle Eocene (2)
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Swauk Formation (1)
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upper Eocene (4)
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Oligocene
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Fish Canyon Tuff (1)
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Frio Formation (1)
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middle Oligocene (1)
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Paleocene
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lower Paleocene
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Danian (2)
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-
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Sespe Formation (1)
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-
Shahejie Formation (2)
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-
Tulare Formation (1)
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upper Cenozoic (7)
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Yakataga Formation (1)
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-
Dalradian (4)
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Mesozoic
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Antalya Complex (1)
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Cretaceous
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Calera Limestone (1)
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Comanchean
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Edwards Formation (1)
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-
Dakota Formation (2)
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Lower Cretaceous
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Albian (6)
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Aptian (7)
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Berriasian (2)
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Bluesky Formation (1)
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Edwards Formation (1)
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Hauterivian (1)
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McMurray Formation (2)
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Mowry Shale (2)
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Muddy Sandstone (1)
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Neocomian (3)
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Newcastle Sandstone (1)
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Skull Creek Shale (1)
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Spirit River Formation (1)
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Torok Formation (1)
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Valanginian (2)
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Mancos Shale (1)
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Middle Cretaceous (4)
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Upper Cretaceous
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Cenomanian (2)
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Coniacian (1)
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Duwi Formation (1)
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Eagle Sandstone (1)
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Frontier Formation (2)
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Maestrichtian (2)
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Mesaverde Group (1)
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Niobrara Formation (2)
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Senonian (3)
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Turonian (1)
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-
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Franciscan Complex (9)
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Great Valley Sequence (2)
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Jurassic
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Aztec Sandstone (1)
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Bazhenov Formation (1)
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Coast Range Ophiolite (2)
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Ferrar Group (1)
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Heather Formation (1)
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Lower Jurassic
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Hettangian (1)
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lower Liassic (1)
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Toarcian (1)
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upper Liassic (1)
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Middle Jurassic
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Bajocian
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Brent Group (6)
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Etive Formation (1)
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Ness Formation (2)
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Rannoch Formation (1)
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Bathonian
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Great Oolite Group (1)
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Callovian (2)
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Twin Creek Limestone (1)
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Upper Jurassic
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Argovian (1)
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Entrada Sandstone (1)
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Fulmar Formation (1)
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Galice Formation (1)
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Haynesville Formation (1)
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Josephine Ophiolite (2)
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Kimmeridge Clay (3)
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Oxfordian (2)
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Portlandian (1)
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Smackover Formation (2)
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Tithonian (1)
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-
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lower Mesozoic (1)
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middle Mesozoic (1)
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Navajo Sandstone (2)
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Nugget Sandstone (1)
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Statfjord Formation (1)
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Triassic
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Charlie Lake Formation (1)
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Lower Triassic (1)
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Middle Triassic
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Doig Formation (1)
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Muschelkalk (1)
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Moenkopi Formation (1)
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Montney Formation (1)
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Upper Triassic
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Chinle Formation (1)
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Dockum Group (1)
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Keuper (1)
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Petrified Forest Member (1)
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Rhaetian
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Penarth Group (1)
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Sag River Sandstone (1)
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-
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upper Mesozoic (2)
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Paleozoic
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Acatlan Complex (1)
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Arbuckle Group (2)
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Cambrian
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Brigham Group (1)
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Conasauga Group (1)
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Lower Cambrian (5)
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Middle Cambrian (1)
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Tintic Quartzite (1)
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Upper Cambrian
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Bonneterre Formation (1)
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Furongian (1)
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-
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Carboniferous
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Jackfork Group (1)
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Lower Carboniferous
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Dinantian (2)
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-
Mississippian
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Chainman Shale (1)
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Lower Mississippian
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Kekiktuk Conglomerate (1)
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Madison Group (1)
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Middle Mississippian
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Visean (1)
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-
Newman Limestone (1)
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Pennsylvanian
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Lower Pennsylvanian (1)
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Middle Pennsylvanian
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Atokan
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Atoka Formation (1)
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-
Desmoinesian
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Spiro Sandstone (1)
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-
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Minturn Formation (1)
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Upper Pennsylvanian (1)
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Wapanucka Limestone (1)
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Silesian (1)
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Upper Carboniferous (1)
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-
Devonian
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Guilmette Formation (1)
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Lower Devonian (4)
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Middle Devonian
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Elk Point Group (1)
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Marcellus Shale (1)
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Prairie Evaporite (1)
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-
Thirtyone Formation (2)
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Upper Devonian
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Canadaway Group (1)
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Famennian (2)
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Frasnian (2)
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Kanayut Conglomerate (1)
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-
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Endicott Group (1)
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Hunton Group (1)
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Knox Group (1)
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Lisburne Group (2)
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lower Paleozoic (8)
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Maroon Formation (1)
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Matapedia Group (1)
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Ordovician
-
Lower Ordovician
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Arenigian (2)
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Ellenburger Group (1)
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-
Meguma Group (1)
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Middle Ordovician
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Cloridorme Formation (1)
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Normanskill Formation (1)
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Trenton Group (2)
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Upper Ordovician
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Trentonian (2)
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Wufeng Formation (1)
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-
Utica Shale (1)
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Vinini Formation (1)
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-
Permian
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Guadalupian (1)
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Kaibab Formation (1)
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Khuff Formation (1)
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Lower Permian
-
Cisuralian
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Artinskian (1)
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-
Leman Sandstone Formation (2)
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Leonardian (1)
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Wolfcampian (2)
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-
Maokou Formation (1)
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McCloud Limestone (1)
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Phosphoria Formation (1)
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Rotliegendes (1)
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Upper Permian
-
Changxing Formation (1)
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Zechstein (3)
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-
-
Shoo Fly Complex (1)
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Silurian
-
Fusselman Dolomite (1)
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Lockport Formation (1)
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Lower Silurian
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Llandovery (1)
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Middle Silurian
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-
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