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Gastropoda (3)
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Tentaculitida (1)
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Protista
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Foraminifera (3)
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microfossils
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Conodonta (2)
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pollen (4)
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Plantae
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Pteridophyta
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Sphenopsida
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Equisetales
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Calamites (1)
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Spermatophyta
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Angiospermae
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Monocotyledoneae
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Gymnospermae
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Pteridospermae (1)
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tracks (1)
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geologic age
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Cenozoic
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Quaternary
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Mazama Ash (1)
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Wisconsinan
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Lavery Till (1)
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upper Wisconsinan
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upper Quaternary
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Stone Age
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Tertiary
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Neogene
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Miocene
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Ash Hollow Formation (1)
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Columbia River Basalt Group (3)
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middle Miocene (2)
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upper Miocene
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Messinian (1)
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Valentine Formation (1)
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Ogallala Formation (1)
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Pliocene
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lower Pliocene
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Zanclean (1)
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upper Pliocene (1)
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Paleogene
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Duchesne River Formation (1)
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Eocene
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Chumstick Formation (2)
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Green River Formation (2)
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Lake Uinta (1)
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lower Eocene (1)
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middle Eocene
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Claiborne Group (1)
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Tyee Formation (1)
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Swauk Formation (2)
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upper Eocene
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Jackson Group (1)
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-
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Oligocene
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Fish Canyon Tuff (1)
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Paleocene
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lower Paleocene
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Danian (1)
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Wilcox Group (1)
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upper Cenozoic
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Villafranchian (1)
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Lake Bonneville (6)
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Laurentide ice sheet (5)
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Mesozoic
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Cretaceous
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Blairmore Group (2)
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Dakota Formation (1)
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Lower Cretaceous
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Albian
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upper Albian (1)
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Mannville Group (1)
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Mancos Shale (1)
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Upper Cretaceous
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Bearpaw Formation (1)
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Campanian (1)
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Cenomanian (2)
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Kaiparowits Formation (1)
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Maestrichtian (1)
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Senonian (2)
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Straight Cliffs Formation (2)
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Wahweap Formation (1)
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Jurassic
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Aztec Sandstone (1)
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Carmel Formation (1)
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Fernie Formation (1)
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Morrison Formation (1)
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Sundance Formation (1)
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Triassic
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Liard Formation (1)
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Lower Triassic
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Spathian (1)
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Middle Triassic
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Ladinian (1)
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Moenkopi Formation (3)
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Upper Triassic
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Chinle Formation (1)
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MIS 2 (1)
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Paleozoic
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Cambrian
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Upper Cambrian
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Goldenville Formation (1)
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Carboniferous
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Barnett Shale (1)
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Lower Mississippian
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Cuyahoga Formation (1)
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Fort Payne Formation (1)
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Osagian
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Pocono Formation (1)
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Madison Group (1)
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Middle Mississippian
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Visean (1)
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Upper Mississippian
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Mauch Chunk Formation (2)
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Meramecian
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Salem Limestone (1)
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Pennsylvanian
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Conemaugh Group (4)
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Middle Pennsylvanian
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Allegheny Group (3)
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Monongahela Group (3)
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Pittsburgh Coal (1)
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Pottsville Group (2)
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Upper Pennsylvanian
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Ames Limestone (1)
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Glenshaw Formation (2)
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Catskill Formation (1)
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Devonian
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Eifelian (2)
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Hamilton Group (1)
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Mahantango Formation (1)
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Marcellus Shale (2)
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Tioga Bentonite (1)
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Tully Limestone (1)
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Millboro Shale (1)
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Old Red Sandstone (1)
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Upper Devonian
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Brallier Shale (1)
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Frasnian (1)
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Hampshire Formation (1)
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Dunkard Group (4)
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Ellis Bay Formation (1)
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Helderberg Group (1)
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Keyser Limestone (1)
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lower Paleozoic
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Conococheague Formation (1)
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Ordovician
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Meguma Group (4)
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Permian
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Silurian
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Tuscarora Formation (1)
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McKenzie Formation (1)
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Upper Silurian
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Cayugan
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Tonoloway Limestone (1)
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Woodford Shale (1)
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Phanerozoic (6)
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Precambrian
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Archean (5)
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Uinta Mountain Group (1)
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upper Precambrian
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Proterozoic
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Mesoproterozoic (2)
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igneous rocks
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igneous rocks
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carbonatites (2)
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kimberlite (1)
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diabase (1)
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gabbros (1)
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granites
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A-type granites (1)
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rapakivi (1)
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ijolite (1)
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lamprophyres
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volcanic rocks
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tuff (2)
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rhyolites (1)
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volcanic ash (2)
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rutile (1)
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pyroxene group (1)
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framework silicates
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zircon group
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zircon (12)
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sheet silicates
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illite (1)
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sulfates
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Primary terms
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absolute age (35)
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Africa
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Japan (1)
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bacteria
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Quebec
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Western Canada
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carbon
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catalogs (1)
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Cenozoic
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Quaternary
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Cordilleran ice sheet (2)
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Holocene
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Mazama Ash (1)
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Pleistocene
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Illinoian (2)
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Lake Agassiz (3)
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Devensian (1)
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Weichselian
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upper Weichselian
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Allerod (1)
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Wisconsinan
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Lavery Till (1)
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upper Wisconsinan
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Fraser Glaciation (1)
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upper Quaternary
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Bull Lake Glaciation (1)
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Pinedale Glaciation (1)
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Stone Age
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Neolithic (1)
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Tertiary
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Arikaree Group (1)
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Muddy Creek Formation (2)
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Neogene
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Bidahochi Formation (1)
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Hemphillian (1)
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Miocene
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Ash Hollow Formation (1)
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Calvert Formation (1)
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Clarendonian (1)
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Columbia River Basalt Group (3)
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lower Miocene (2)
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middle Miocene (2)
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upper Miocene
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Messinian (1)
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Valentine Formation (1)
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Ogallala Formation (1)
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Pliocene
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lower Pliocene
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Zanclean (1)
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upper Pliocene (1)
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-
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Paleogene
-
Duchesne River Formation (1)
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Eocene
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Chumstick Formation (2)
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Green River Formation (2)
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Lake Uinta (1)
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lower Eocene (1)
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middle Eocene
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Claiborne Group (1)
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Tyee Formation (1)
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Swauk Formation (2)
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upper Eocene
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Jackson Group (1)
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Oligocene
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Fish Canyon Tuff (1)
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Paleocene
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lower Paleocene
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Danian (1)
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Wilcox Group (1)
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upper Cenozoic
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Villafranchian (1)
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Chordata
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Vertebrata
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Pisces
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Osteichthyes
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Tetrapoda
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Caudata (1)
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Aves (1)
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Mammalia
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Carnivora
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Chiroptera (1)
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Perissodactyla
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Hippomorpha
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Equidae (1)
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Proboscidea
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Mammutidae (1)
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Rodentia
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Metatheria (1)
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Reptilia
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Synapsida
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clay deposits (1)
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ijolite (1)
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Echinozoa
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Echinoidea (2)
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Homalozoa
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Stylophora (1)
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Mollusca
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Bivalvia
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Palaeoheterodonta
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Unionidae (1)
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Cephalopoda
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Ammonoidea
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Ammonites (1)
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Gastropoda (3)
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Tentaculitida (1)
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Protista
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Foraminifera (3)
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isotopes
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radioactive isotopes
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C-14 (13)
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Cl-36 (1)
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Cs-137 (1)
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Pb-206/Pb-204 (3)
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Pb-207/Pb-204 (4)
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Pb-208/Pb-204 (2)
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Pb-210 (1)
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Sm-147/Nd-144 (1)
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stable isotopes
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C-13 (1)
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C-13/C-12 (8)
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D/H (3)
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deuterium (1)
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Nd-144/Nd-143 (3)
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O-18/O-16 (13)
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Os-188/Os-187 (1)
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Pb-206/Pb-204 (3)
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Pb-207/Pb-204 (4)
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Pb-207/Pb-206 (1)
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Pb-208/Pb-204 (2)
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S-33/S-32 (1)
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S-34/S-32 (10)
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Sm-147/Nd-144 (1)
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Sr-87/Sr-86 (5)
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land subsidence (1)
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land use (9)
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lava (1)
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limestone deposits (2)
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magmas (2)
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mantle (5)
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maps (7)
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marble deposits (3)
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Mesozoic
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Cretaceous
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Blairmore Group (2)
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Dakota Formation (1)
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Lower Cretaceous
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Albian
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upper Albian (1)
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Mannville Group (1)
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Mancos Shale (1)
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Upper Cretaceous
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Bearpaw Formation (1)
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Campanian (1)
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Cenomanian (2)
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Kaiparowits Formation (1)
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Maestrichtian (1)
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Santonian (1)
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Senonian (2)
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Straight Cliffs Formation (2)
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Wahweap Formation (1)
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Jurassic
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Aztec Sandstone (1)
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Carmel Formation (1)
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Fernie Formation (1)
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Lower Jurassic (1)
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Middle Jurassic (1)
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Upper Jurassic
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Morrison Formation (1)
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Sundance Formation (1)
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Triassic
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Liard Formation (1)
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Lower Triassic
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Spathian (1)
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Middle Triassic
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Ladinian (1)
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Moenkopi Formation (3)
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Upper Triassic
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Chinle Formation (1)
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metal ores
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antimony ores (1)
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cobalt ores (1)
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copper ores (3)
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gold ores (24)
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IOCG deposits (1)
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iron ores (1)
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lead ores (2)
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lead-zinc deposits (1)
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mercury ores (1)
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molybdenum ores (2)
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nickel ores (1)
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palladium ores (1)
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platinum ores (1)
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silver ores (3)
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tungsten ores (1)
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uranium ores (1)
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vanadium ores (1)
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zinc ores (2)
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metals
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alkali metals
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cesium
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Cs-137 (1)
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potassium (1)
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sodium (2)
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alkaline earth metals
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calcium (1)
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magnesium (1)
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strontium
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Sr-87/Sr-86 (5)
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aluminum (2)
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antimony (1)
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arsenic (2)
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copper (1)
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gold (1)
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iron (2)
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lead
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Pb-206/Pb-204 (3)
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Pb-207/Pb-204 (4)
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Pb-207/Pb-206 (1)
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Pb-208/Pb-204 (2)
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Pb-210 (1)
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manganese (1)
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mercury (1)
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molybdenum (1)
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platinum group
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osmium
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Os-188/Os-187 (1)
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palladium ores (1)
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platinum ores (1)
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precious metals (3)
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rare earths
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europium (2)
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neodymium
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Nd-144/Nd-143 (3)
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Sm-147/Nd-144 (1)
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samarium
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Sm-147/Nd-144 (1)
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silver (1)
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tungsten (2)
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metamorphic rocks
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amphibolites (2)
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gneisses (1)
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granulites (1)
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marbles (4)
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metaigneous rocks
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metabasalt (1)
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serpentinite (1)
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metasedimentary rocks (3)
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metasomatic rocks
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serpentinite (1)
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skarn (1)
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schists
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greenschist (1)
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slates (1)
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metamorphism (10)
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metasomatism (7)
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Mexico (2)
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mineral deposits, genesis (20)
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mineral exploration (4)
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mineral resources (1)
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mining geology (1)
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museums (3)
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nitrogen (1)
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noble gases
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helium (1)
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North America
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Appalachian Basin (1)
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Appalachians
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Allegheny Mountains (1)
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Appalachian Plateau (3)
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Blue Ridge Mountains (2)
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Catskill Mountains (1)
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Central Appalachians (1)
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Northern Appalachians (2)
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Piedmont (2)
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Southern Appalachians (2)
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Valley and Ridge Province (3)
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Basin and Range Province
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Great Basin (7)
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Canadian Shield
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Grenville Province (1)
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Superior Province
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Abitibi Belt (1)
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Swayze greenstone belt (1)
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Uchi Subprovince (1)
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Great Lakes region (1)
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Great Plains
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Northern Great Plains (1)
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Gulf Coastal Plain (3)
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Keweenawan Rift (2)
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Lake Superior region (1)
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North American Cordillera
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Canadian Cordillera (3)
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North American Craton (1)
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Rocky Mountains
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Northern Rocky Mountains (1)
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Southern Rocky Mountains (1)
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U. S. Rocky Mountains
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Absaroka Range (1)
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Gravelly Range (1)
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Laramie Mountains (1)
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Little Belt Mountains (1)
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San Juan Mountains (1)
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Uinta Mountains (3)
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Wind River Range (1)
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Skagit Valley (1)
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Sonoran Desert (1)
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Western Canada Sedimentary Basin (1)
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Western Overthrust Belt (1)
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ocean circulation (1)
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oil and gas fields (1)
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orogeny (8)
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oxygen
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O-18/O-16 (13)
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Pacific Coast (2)
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paleobotany (1)
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paleoclimatology (15)
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paleoecology (18)
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paleogeography (25)
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paleomagnetism (3)
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paleontology (3)
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Paleozoic
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Cambrian
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Conasauga Group (1)
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Middle Cambrian (1)
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Upper Cambrian
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Goldenville Formation (1)
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Carboniferous
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Mississippian
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Barnett Shale (1)
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Borden Group (1)
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Lower Mississippian
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Cuyahoga Formation (1)
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Fort Payne Formation (1)
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Osagian
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Burlington Limestone (1)
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Keokuk Limestone (1)
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Pocono Formation (1)
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Madison Group (1)
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Middle Mississippian
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Visean (1)
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Upper Mississippian
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Mauch Chunk Formation (2)
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Meramecian
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Salem Limestone (1)
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Pennsylvanian
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Conemaugh Group (4)
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Middle Pennsylvanian
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Allegheny Group (3)
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Monongahela Group (3)
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Pittsburgh Coal (1)
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Pottsville Group (2)
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Upper Pennsylvanian
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Ames Limestone (1)
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Glenshaw Formation (2)
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Catskill Formation (1)
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Devonian
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Middle Devonian
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Eifelian (2)
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Givetian (1)
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Hamilton Group (1)
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Mahantango Formation (1)
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Marcellus Shale (2)
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Tioga Bentonite (1)
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Tully Limestone (1)
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Millboro Shale (1)
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Old Red Sandstone (1)
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Upper Devonian
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Brallier Shale (1)
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Frasnian (1)
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Hampshire Formation (1)
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Dunkard Group (4)
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Ellis Bay Formation (1)
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Helderberg Group (1)
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Keyser Limestone (1)
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lower Paleozoic
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Conococheague Formation (1)
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Ordovician
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Lower Ordovician
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Fillmore Formation (1)
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Ibexian (1)
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Meguma Group (4)
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Middle Ordovician (1)
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Upper Ordovician
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Hirnantian (1)
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Permian
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Kaibab Formation (1)
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Park City Formation (1)
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Upper Permian (1)
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Silurian
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Lower Silurian
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Tuscarora Formation (1)
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Middle Silurian
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McKenzie Formation (1)
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Upper Silurian
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Cayugan
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Tonoloway Limestone (1)
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Woodford Shale (1)
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palynology (1)
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