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(U-Th)/He (3)
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Ar/Ar (24)
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exposure age (5)
-
fission-track dating (4)
-
infrared stimulated luminescence (1)
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K/Ar (1)
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Lu/Hf (2)
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optically stimulated luminescence (3)
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paleomagnetism (7)
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Pb/Pb (2)
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Rb/Sr (2)
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Sm/Nd (10)
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tephrochronology (2)
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Th/U (2)
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thermochronology (5)
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tree rings (2)
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U/Pb (74)
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U/Th/Pb (3)
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-
geologic age
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Anthropocene (2)
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Cenozoic
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Bakhtiari Formation (1)
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Blancan (4)
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Bronze Age (1)
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Glenns Ferry Formation (1)
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lower Cenozoic (1)
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Quaternary
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Cordilleran ice sheet (1)
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Holocene
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lower Holocene (2)
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Middle Ages (1)
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middle Holocene (1)
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Neoglacial
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Little Ice Age (1)
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-
Neolithic (1)
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upper Holocene
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Little Ice Age (1)
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-
-
Pleistocene
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Illinoian (1)
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Irvingtonian (2)
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Lake Missoula (2)
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lower Pleistocene (3)
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middle Pleistocene (3)
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upper Pleistocene
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Devensian (1)
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Tyrrhenian (1)
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Wisconsinan
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upper Wisconsinan (2)
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-
-
-
upper Quaternary (3)
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-
Stone Age
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Neolithic (1)
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-
Tertiary
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Arikareean (1)
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Asmari Formation (1)
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Cypress Hills Formation (1)
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John Day Formation (3)
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lower Tertiary (2)
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Muddy Creek Formation (3)
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Neogene
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Bidahochi Formation (2)
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Browns Park Formation (1)
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Deschutes Formation (1)
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Hemphillian (2)
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Miocene
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Clarendonian (1)
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Columbia River Basalt Group (3)
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lower Miocene (1)
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middle Miocene (4)
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Surma Group (1)
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upper Miocene
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Messinian (1)
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Puente Formation (1)
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Santa Margarita Formation (1)
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-
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Pliocene
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lower Pliocene
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Zanclean (1)
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-
upper Pliocene
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Rexroad Formation (1)
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-
-
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Paleogene
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Chadron Formation (1)
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Eocene
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Chuckanut Formation (1)
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Clarno Formation (1)
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lower Eocene
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Willwood Formation (1)
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middle Eocene
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Claiborne Group (1)
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Tallahatta Formation (1)
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-
Ootsa Lake Group (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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Brule Formation (1)
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Hemlock Conglomerate (1)
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upper Oligocene (2)
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-
Paleocene (4)
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Paleocene-Eocene Thermal Maximum (2)
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Sespe Formation (1)
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Tyonek Formation (2)
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White River Group (2)
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-
Shahejie Formation (1)
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upper Tertiary (1)
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Vaqueros Formation (1)
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-
upper Cenozoic (3)
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-
Dalradian (1)
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Laurentide ice sheet (3)
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Mesozoic
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Cretaceous
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Asu River Group (1)
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Blairmore Group (1)
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Dakota Formation (1)
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Kuskokwim Group (1)
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Lower Cretaceous
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Albian
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upper Albian (2)
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-
Burro Canyon Formation (1)
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Cedar Mountain Formation (4)
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Christopher Formation (1)
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Cloverly Formation (1)
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Inyan Kara Group (1)
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Lakota Formation (1)
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McMurray Formation (2)
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Mowry Shale (2)
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Muddy Sandstone (2)
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Newcastle Sandstone (1)
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Valanginian (1)
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Middle Cretaceous (1)
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Upper Cretaceous
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Bearpaw Formation (1)
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Belly River Formation (1)
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Campanian (2)
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Cardium Formation (1)
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Cenomanian
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lower Cenomanian (1)
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-
Coniacian (1)
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Fox Hills Formation (1)
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Frontier Formation (1)
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Gammon Ferruginous Member (1)
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Gulfian
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Aguja Formation (1)
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-
Hornbrook Formation (1)
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Lance Formation (1)
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Lewis Shale (1)
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Maestrichtian (3)
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Mesaverde Group (2)
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Milk River Formation (1)
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Montana Group (1)
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Niobrara Formation (1)
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Pierre Shale (4)
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Senonian (5)
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Sharon Springs Member (1)
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Turonian (2)
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-
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Jurassic
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Lower Jurassic
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Laberge Group (1)
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lower Liassic (2)
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middle Liassic (1)
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Pliensbachian (1)
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Sinemurian (2)
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Sunrise Formation (1)
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Middle Jurassic
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Summerville Formation (1)
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Upper Jurassic
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Bowser Lake Group (1)
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Brushy Basin Member (1)
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Buckner Formation (1)
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Entrada Sandstone (1)
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Haynesville Formation (1)
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Kimmeridgian (1)
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Morrison Formation (3)
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Naknek Formation (1)
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Oxfordian (1)
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Stump Formation (1)
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Sundance Formation (2)
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Swift Formation (1)
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-
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lower Mesozoic (2)
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Triassic
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Lower Triassic
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Bunter (1)
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Griesbachian (1)
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Induan (1)
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Permian-Triassic boundary (7)
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-
Middle Triassic (2)
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Montney Formation (4)
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Narrabeen Group (1)
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Nicola Group (1)
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Upper Triassic
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Mercia Mudstone (1)
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Norian (1)
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Rhaetian (2)
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Yanchang Formation (1)
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-
-
-
MIS 2 (2)
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MIS 6 (1)
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Moldanubian (1)
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Paleozoic
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Bowers Supergroup (1)
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Cambrian
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Lower Cambrian
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Chilhowee Group (1)
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Poleta Formation (2)
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-
Middle Cambrian
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Flathead Sandstone (1)
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Upper Cambrian (1)
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-
Carboniferous
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Lower Carboniferous
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Dinantian (3)
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-
Mabou Group (1)
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Mississippian
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Barnett Shale (1)
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Boone Formation (1)
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Borden Group (1)
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Lower Mississippian
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Kayak Shale (1)
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Osagian (1)
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Pocono Formation (1)
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Tournaisian
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upper Tournaisian (2)
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-
-
Madison Group (4)
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Middle Mississippian
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Visean
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Great Scar Limestone (1)
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-
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Mission Canyon Limestone (1)
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Upper Mississippian
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Hartselle Sandstone (3)
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Heath Formation (1)
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Mauch Chunk Formation (1)
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-
Windsor Group (1)
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Namurian (1)
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Pennsylvanian
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Conemaugh Group (2)
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Joggins Formation (2)
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Lower Pennsylvanian (1)
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Middle Pennsylvanian
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Allegheny Group (2)
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Atokan (1)
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Desmoinesian
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Cherokee Group (1)
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Marmaton Group (1)
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-
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Monongahela Group (1)
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Morien Group (1)
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Pottsville Group (2)
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Upper Pennsylvanian
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Glenshaw Formation (1)
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-
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Upper Carboniferous
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Westphalian (2)
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-
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Catskill Formation (1)
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Deadwood Formation (1)
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Devonian
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Lower Devonian
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Emsian (1)
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Lochkovian (1)
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Middle Devonian
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Eifelian (1)
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Givetian (1)
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Marcellus Shale (1)
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-
Old Red Sandstone (3)
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Upper Devonian
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Duperow Formation (1)
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Famennian (1)
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Frasnian (4)
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Hampshire Formation (1)
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Kanayut Conglomerate (1)
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-
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Dunkard Group (2)
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Ellis Bay Formation (1)
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Exshaw Formation (1)
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Gfohl Unit (1)
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Helderberg Group (1)
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Horton Group (1)
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lower Paleozoic (9)
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Minnelusa Formation (4)
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Ordovician
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Lower Ordovician
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Ibexian (1)
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Manitou Formation (1)
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-
Middle Ordovician
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Saint Peter Sandstone (1)
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Whiterockian (1)
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Trenton Group (1)
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Upper Ordovician
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Caradocian (2)
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Hirnantian (1)
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Katian (1)
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Sandbian (1)
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Wufeng Formation (1)
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-
-
Permian
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Lower Permian (3)
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Phosphoria Formation (1)
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Upper Permian
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Permian-Triassic boundary (7)
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-
-
Phuket Group (1)
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Silurian
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Lower Silurian
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Tuscarora Formation (1)
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-
Upper Silurian (4)
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-
upper Paleozoic
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Bakken Formation (1)
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Weber Sandstone (1)
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-
Phanerozoic (1)
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Precambrian
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Archean
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Aravalli System (1)
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Mesoarchean (1)
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Neoarchean (3)
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-
Central Rand Group (1)
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Delhi Supergroup (1)
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upper Precambrian
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Proterozoic
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Banxi Group (1)
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Damara System (1)
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Keweenawan (1)
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Mesoproterozoic
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Aldridge Formation (1)
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Belt Supergroup (1)
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Gawler Range Volcanics (1)
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-
Neoproterozoic
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Ediacaran (3)
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Riphean
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upper Riphean (1)
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-
Tonian (1)
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Torridonian (2)
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Vendian (4)
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-
Paleoproterozoic
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Willyama Supergroup (1)
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-
-
-
Witwatersrand Supergroup (1)
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Wyman Formation (2)
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-
Vindhyan (1)
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-
igneous rocks
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igneous rocks
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carbonatites (2)
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hypabyssal rocks (1)
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kimberlite (2)
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plutonic rocks
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diabase (3)
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diorites
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plagiogranite (1)
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tonalite (2)
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-
gabbros
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