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tree rings (1)
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U/Pb (205)
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geologic age
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Cenozoic
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Blancan (1)
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middle Cenozoic (2)
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Quaternary
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Holocene
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Pleistocene
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Irvingtonian (1)
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Lake Agassiz (1)
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upper Pleistocene
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Rancholabrean (1)
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upper Quaternary (5)
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Tertiary
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Catahoula Formation (1)
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lower Tertiary (3)
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middle Tertiary (3)
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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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Astoria Formation (2)
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lower Miocene
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Hemingfordian (1)
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middle Miocene (5)
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Zia Formation (1)
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Pliocene
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lower Pliocene (4)
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upper Pliocene (2)
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Yorktown Formation (1)
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-
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Paleogene
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Eocene
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Bridger Formation (1)
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Bridgerian (1)
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lower Eocene
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Ypresian (1)
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middle Eocene (6)
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Mission Valley Formation (1)
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upper Eocene (5)
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lower Paleogene (5)
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Oligocene
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Frio Formation (1)
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lower Oligocene (1)
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upper Oligocene (8)
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Vicksburg Group (1)
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Paleocene
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lower Paleocene
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Danian (2)
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upper Paleocene (1)
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Paleocene-Eocene Thermal Maximum (1)
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Sespe Formation (5)
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upper Paleogene (1)
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Wasatch Formation (1)
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Wilcox Group (4)
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-
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upper Cenozoic
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Tamiami Formation (1)
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-
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Lake Bonneville (2)
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Mesozoic
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Bisbee Group (6)
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Condrey Mountain Schist (1)
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Cretaceous
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Alisitos Formation (2)
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Asu River Group (1)
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Comanchean
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Buda Limestone (1)
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Glen Rose Formation (2)
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Travis Peak Formation (1)
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Washita Group (1)
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Dakota Formation (2)
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Lower Cretaceous
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Albian
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upper Albian (2)
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Aptian (5)
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Burro Canyon Formation (1)
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Cedar Mountain Formation (1)
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Glen Rose Formation (2)
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Hauterivian (1)
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Mural Limestone (4)
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Travis Peak Formation (1)
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Valanginian (1)
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Middle Cretaceous (13)
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Natih Formation (1)
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Queen Charlotte Group (1)
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Upper Cretaceous
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Buda Limestone (1)
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Campanian
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Cerro del Pueblo Formation (1)
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lower Campanian (1)
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Castlegate Sandstone (1)
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Cenomanian (5)
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Coniacian (1)
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Gulfian
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Aguja Formation (1)
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Austin Chalk (1)
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Olmos Formation (1)
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Woodbine Formation (1)
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Hell Creek Formation (1)
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Hornbrook Formation (1)
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Javelina Formation (2)
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Kaiparowits Formation (1)
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Maestrichtian (7)
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Mesaverde Group (1)
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Rosario Formation (2)
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Santonian (1)
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Senonian (5)
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Straight Cliffs Formation (2)
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Tuolumne Intrusive Suite (2)
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Turonian (1)
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Tuscaloosa Formation (1)
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Wahweap Formation (1)
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Yacoraite Formation (1)
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Franciscan Complex (4)
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Glen Canyon Group (3)
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Great Valley Sequence (5)
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Jurassic
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Aztec Sandstone (2)
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Carmel Formation (1)
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Lower Jurassic
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Hettangian (4)
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lower Liassic (3)
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middle Liassic (2)
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Pliensbachian (3)
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Sinemurian (1)
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Toarcian (3)
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Triassic-Jurassic boundary (1)
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upper Liassic (1)
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Middle Jurassic
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Bajocian (2)
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Bathonian (2)
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Callovian (1)
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Summerville Formation (1)
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Norphlet Formation (1)
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San Rafael Group (4)
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Smartville Complex (2)
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Upper Jurassic
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Entrada Sandstone (1)
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Josephine Ophiolite (1)
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Kimmeridge Clay (1)
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Kimmeridgian (1)
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La Casita Formation (1)
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Malm (1)
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Morrison Formation (3)
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Oxfordian (1)
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Tithonian (3)
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-
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Kayenta Formation (1)
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lower Mesozoic (6)
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McHugh Complex (1)
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Navajo Sandstone (3)
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Orocopia Schist (5)
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Triassic
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Charlie Lake Formation (1)
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Lower Triassic
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Permian-Triassic boundary (2)
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Moenkopi Formation (4)
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Mole Granite (1)
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Upper Triassic
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Baldonnel Formation (1)
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Carnian (2)
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Chinle Formation (14)
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Dockum Group (1)
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Luning Formation (2)
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Norian (8)
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Pardonet Formation (2)
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Petrified Forest Member (1)
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Rhaetian (2)
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Shinarump Member (1)
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Triassic-Jurassic boundary (1)
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-
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upper Mesozoic (4)
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Wingate Sandstone (2)
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Paleozoic
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Acatlan Complex (8)
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Arbuckle Group (1)
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Cambrian
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Acadian (1)
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Carrara Formation (2)
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Lower Cambrian
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Atdabanian (1)
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Poleta Formation (2)
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Terreneuvian
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Fortunian (1)
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Zabriskie Quartzite (1)
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Middle Cambrian
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Marjum Formation (1)
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Wheeler Formation (1)
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Pioche Shale (3)
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Tapeats Sandstone (1)
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Upper Cambrian
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Lamotte Sandstone (1)
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Carboniferous
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Huanglong Formation (1)
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Lower Carboniferous
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Dinantian (3)
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Middle Carboniferous (2)
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Mississippian
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Barnett Shale (2)
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Lower Mississippian
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Tournaisian (1)
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Middle Mississippian
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Visean (1)
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Upper Mississippian
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Chesterian
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Golconda Formation (1)
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Serpukhovian (1)
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Pennsylvanian
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Lower Pennsylvanian
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Bashkirian (1)
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Haymond Formation (2)
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Middle Pennsylvanian
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Allegheny Group (1)
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Moscovian (1)
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Pottsville Group (1)
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Upper Pennsylvanian
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Canyon Group (2)
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Virgilian (1)
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Upper Carboniferous (2)
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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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Pragian (1)
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Middle Devonian
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Eifelian (1)
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Givetian
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upper Givetian (1)
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-
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Upper Devonian
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Famennian (3)
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lower Paleozoic (4)
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middle Paleozoic (3)
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Ordovician
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Eureka Quartzite (4)
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Lower Ordovician
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Ellenburger Group (1)
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Ibexian (1)
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Manitou Formation (1)
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Saint George Group (1)
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Tremadocian (2)
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Middle Ordovician
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Chazyan (1)
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Whiterockian (2)
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Montoya Group (1)
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Upper Ordovician
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Bighorn Dolomite (1)
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Caradocian (1)
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-
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Permian
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Glorieta Sandstone (1)
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Guadalupian
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Bell Canyon Formation (1)
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Brushy Canyon Formation (1)
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Cherry Canyon Formation (1)
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Delaware Mountain Group (1)
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Grayburg Formation (1)
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Lower Permian
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Abo Formation (2)
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Cherry Canyon Formation (1)
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Cisuralian (3)
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Leonardian (3)
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Qixia Formation (1)
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Wolfcampian
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Hueco Limestone (1)
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-
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McCloud Limestone (1)
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Middle Permian (3)
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Park City Formation (1)
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Phosphoria Formation (1)
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Upper Permian
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Permian-Triassic boundary (2)
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-
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Sauk Sequence (4)
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Shoo Fly Complex (2)
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Silurian (7)
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upper Paleozoic
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Calaveras Formation (1)
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Shanxi Formation (1)
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-
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Phanerozoic (12)
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Precambrian
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Archean
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Neoarchean (1)
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Timiskaming Group (1)
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Carrizo Mountain Formation (1)
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Chuar Group (3)
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Hazel Formation (1)
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Johnnie Formation (4)
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Kingston Peak Formation (2)
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Noonday Dolomite (1)
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Pahrump Series (2)
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Purcell System (1)
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Stirling Quartzite (5)
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Uinta Mountain Group (1)
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Unkar Group (1)
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upper Precambrian
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Proterozoic
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Mesoproterozoic
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Apache Group (1)
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Belt Supergroup (2)
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Revett Quartzite (1)
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Neoproterozoic
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Cryogenian (1)
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Dengying Formation (2)
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Doushantuo Formation (1)
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Ediacaran (14)
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Tonian (4)
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Vendian (4)
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Paleoproterozoic (21)
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Sinian
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Dengying Formation (2)
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Doushantuo Formation (1)
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-
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Wyman Formation (1)
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-
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igneous rocks
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igneous rocks
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hypabyssal rocks (3)
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kimberlite (1)
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peperite (1)
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plutonic rocks
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diabase (3)
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diorites
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quartz diorites (6)
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tonalite (6)
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trondhjemite (1)
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gabbros
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troctolite (1)
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