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Brachiopoda
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Articulata
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Pentamerida (1)
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Rhynchonellida
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Bryozoa (1)
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Cnidaria
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Echinodermata
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Asterozoa
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Stelleroidea
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Crinozoa
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Crinoidea (4)
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Mollusca
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Cephalopoda
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Ammonoidea
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Gastropoda (1)
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Polyplacophora (1)
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Porifera (1)
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Protista
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Foraminifera
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Rotaliina
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Ammonia (1)
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Elphidium (1)
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-
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Textulariina
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Lituolacea
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Ammobaculites (1)
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Radiolaria (1)
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Vermes
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scolecodonts (1)
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Conodonta
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Plantae
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Pteridophyta
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Lycopsida
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Spermatophyta
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Angiospermae
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Gymnospermae
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Coniferales (1)
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tracks (4)
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geochronology methods
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Ar/Ar (9)
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Sm/Nd (2)
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U/Pb (9)
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geologic age
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Cenozoic
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middle Cenozoic (1)
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Quaternary
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Cordilleran ice sheet (2)
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Holocene
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middle Holocene (1)
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Neoglacial
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Little Ice Age (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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Lake Agassiz (3)
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lower Pleistocene (1)
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middle Pleistocene (1)
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upper Pleistocene
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Lake Iroquois (1)
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Weichselian
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upper Weichselian
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Allerod (1)
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Bolling (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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-
-
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Wedron Formation (1)
-
-
upper Quaternary (4)
-
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Tertiary
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Neogene
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Miocene
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Calvert Formation (1)
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Columbia River Basalt Group (9)
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Grande Ronde Basalt (2)
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lower Miocene (1)
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middle Miocene
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Choptank Formation (1)
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Saddle Mountains Basalt (2)
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Saint Marys Formation (1)
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Wanapum Basalt (1)
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-
Pliocene (8)
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-
Paleogene
-
Duchesne River Formation (1)
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Eocene
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Bridger Formation (1)
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Chuckanut Formation (1)
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Chumstick Formation (1)
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Green River Formation (2)
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lower Eocene (2)
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middle Eocene
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Tallahatta Formation (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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Uinta Formation (1)
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-
-
Hanna Formation (2)
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Oligocene (5)
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Paleocene
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Clayton Formation (1)
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lower Paleocene
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Danian (1)
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K-T boundary (1)
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Midway Group (1)
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upper Paleocene (1)
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Wasatch Formation (1)
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Wilcox Group (1)
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-
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upper Cenozoic (1)
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Lake Bonneville (2)
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Laurentide ice sheet (3)
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Mesozoic
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Condrey Mountain Schist (2)
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Cretaceous
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Comanchean
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Glen Rose Formation (1)
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Washita Group (1)
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-
Dakota Formation (1)
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Lower Cretaceous
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Aptian (1)
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Glen Rose Formation (1)
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Mancos Shale (1)
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Upper Cretaceous
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Blackhawk Formation (2)
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Campanian (1)
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Castlegate Sandstone (1)
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Cenomanian (2)
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Ferron Sandstone Member (1)
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Gulfian
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Eagle Ford Formation (1)
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Woodbine Formation (1)
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K-T boundary (1)
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Laramie Formation (2)
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Maestrichtian (1)
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Senonian (1)
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Star Point Sandstone (1)
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Straight Cliffs Formation (1)
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Tropic Shale (1)
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Turonian (1)
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-
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Franciscan Complex (2)
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Glen Canyon Group (1)
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Jurassic
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Lower Jurassic
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East Berlin Formation (1)
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Portland Formation (1)
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Middle Jurassic
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Aalenian (1)
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San Rafael Group (1)
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Upper Jurassic
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Galice Formation (1)
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Josephine Ophiolite (2)
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Morrison Formation (2)
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-
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Orocopia Schist (1)
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Triassic
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Moenkopi Formation (1)
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Upper Triassic
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Chinle Formation (2)
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Norian (1)
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-
-
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Paleozoic
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Arbuckle Group (2)
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Berea Sandstone (1)
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Bird Spring Formation (1)
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Cambrian
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Lower Cambrian
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Rome Formation (1)
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Upper Cambrian
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Copper Ridge Dolomite (1)
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Potsdam Sandstone (1)
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-
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Carboniferous
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Lower Carboniferous (1)
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Mississippian
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Borden Group (2)
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Lower Mississippian
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Cuyahoga Formation (3)
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Osagian (3)
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Pocono Formation (2)
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Tournaisian (1)
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Price Formation (1)
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Sunbury Shale (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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-
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Valmeyeran (1)
-
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Pennsylvanian
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Conemaugh Group (5)
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Middle Pennsylvanian
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Allegheny Group (4)
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Monongahela Group (2)
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Pittsburgh Coal (1)
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Pottsville Group (3)
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Upper Pennsylvanian
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Ames Limestone (1)
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Glenshaw Formation (2)
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-
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Upper Carboniferous
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Westphalian (1)
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-
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Catskill Formation (3)
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Chattanooga Shale (1)
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Devonian
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Middle Devonian
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Eifelian (1)
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Marcellus Shale (1)
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Onondaga Limestone (1)
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Millboro Shale (1)
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Upper Devonian
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Cleveland Member (1)
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Famennian
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upper Famennian (1)
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-
Hampshire Formation (3)
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Ohio Shale (3)
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Olentangy Shale (1)
-
-
-
Dunkard Group (4)
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Knox Group (1)
-
lower Paleozoic
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Chopawamsic Formation (1)
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Conococheague Formation (1)
-
-
New Albany Shale (1)
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Ordovician
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Chickamauga Group (1)
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Lower Ordovician (2)
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Middle Ordovician
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Bromide Formation (1)
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Darriwilian (1)
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Platteville Formation (1)
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Simpson Group (1)
-
-
Upper Ordovician
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Cincinnatian (1)
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Fairview Formation (1)
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Kope Formation (2)
-
-
-
Permian
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Lower Permian
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Leonardian (1)
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Wolfcampian (1)
-
-
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Sauk Sequence (1)
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Shawangunk Formation (1)
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Silurian
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Lower Silurian
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Brassfield Formation (1)
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Llandovery
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Rhuddanian (1)
-
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Wenlock (1)
-
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Upper Silurian
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Bloomsburg Formation (1)
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-
-
Supai Formation (1)
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Woodford Shale (1)
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-
Phanerozoic (3)
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Precambrian
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Animikie Group (1)
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Baltimore Gneiss (1)
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Biwabik Iron Formation (1)
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Carrizo Mountain Formation (1)
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Catoctin Formation (1)
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Hazel Formation (2)
-
upper Precambrian
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Proterozoic
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Mesoproterozoic
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Belt Supergroup (1)
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Neoproterozoic
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Paleoproterozoic
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Virginia Formation (1)
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-
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-
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igneous rocks
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igneous rocks
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carbonatites (1)
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volcanic rocks
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glasses
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pyroclastics
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ignimbrite (3)
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rhyolites (2)
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ophiolite (2)
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sheet silicates
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sulfates
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Primary terms
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Australasia
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carbon
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C-14 (10)
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Cenozoic
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middle Cenozoic (1)
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Quaternary
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Cordilleran ice sheet (2)
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Holocene
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middle Holocene (1)
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Neoglacial
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Little Ice Age (1)
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-
upper Holocene
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Little Ice Age (1)
-
-
-
Pleistocene
-
Illinoian (1)
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Irvingtonian (1)
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Lake Agassiz (3)
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Lake Lahontan (1)
-
Lake Missoula (4)
-
lower Pleistocene (1)
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middle Pleistocene (1)
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upper Pleistocene
-
Lake Iroquois (1)
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Weichselian
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upper Weichselian
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Allerod (1)
-
Bolling (1)
-
Younger Dryas (2)
-
-
-
Wisconsinan
-
Lavery Till (1)
-
upper Wisconsinan
-
Fraser Glaciation (1)
-
-
-
-
Wedron Formation (1)
-
-
upper Quaternary (4)
-
-
Tertiary
-
Neogene
-
Miocene
-
Calvert Formation (1)
-
Columbia River Basalt Group (9)
-
Grande Ronde Basalt (2)
-
lower Miocene (1)
-
middle Miocene
-
Choptank Formation (1)
-
-
Saddle Mountains Basalt (2)
-
Saint Marys Formation (1)
-
Wanapum Basalt (1)
-
-
Pliocene (8)
-
-
Paleogene
-
Duchesne River Formation (1)
-
Eocene
-
Bridger Formation (1)
-
Chuckanut Formation (1)
-
Chumstick Formation (1)
-
Green River Formation (2)
-
lower Eocene (2)
-
middle Eocene
-
Tallahatta Formation (1)
-
Tyee Formation (1)
-
-
Swauk Formation (2)
-
upper Eocene
-
Uinta Formation (1)
-
-
-
Hanna Formation (2)
-
Oligocene (5)
-
Paleocene
-
Clayton Formation (1)
-
lower Paleocene
-
Danian (1)
-
K-T boundary (1)
-
-
Midway Group (1)
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upper Paleocene (1)
-
-
Wasatch Formation (1)
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Wilcox Group (1)
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-
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upper Cenozoic (1)
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Chordata
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Vertebrata
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Agnatha (1)
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Osteichthyes
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Tetrapoda
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Mammalia
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Reptilia
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volcanic rocks
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Invertebrata
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Trilobitomorpha
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Trilobita (1)
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Brachiopoda
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Articulata
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Rhynchonellida
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Rhynchonellidae (1)
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Bryozoa (1)
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Cnidaria
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Anthozoa (1)
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Echinodermata
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Stelleroidea
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Crinozoa
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Crinoidea (4)
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Mollusca
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Cephalopoda
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Ammonoidea
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Foraminifera
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Rotaliina
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Rotaliacea
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Ammonia (1)
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Elphidium (1)
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Textulariina
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Lituolacea
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Ammobaculites (1)
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Vermes
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Mesozoic
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Condrey Mountain Schist (2)
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Cretaceous
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Comanchean
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Glen Rose Formation (1)
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Washita Group (1)
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Dakota Formation (1)
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Lower Cretaceous
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Aptian (1)
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Glen Rose Formation (1)
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Mancos Shale (1)
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Upper Cretaceous
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Blackhawk Formation (2)
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Campanian (1)
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Castlegate Sandstone (1)
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Cenomanian (2)
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Ferron Sandstone Member (1)
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Gulfian
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Eagle Ford Formation (1)
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Woodbine Formation (1)
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K-T boundary (1)
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Laramie Formation (2)
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Maestrichtian (1)
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Senonian (1)
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Star Point Sandstone (1)
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Straight Cliffs Formation (1)
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Tropic Shale (1)
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Turonian (1)
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-
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Franciscan Complex (2)
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Glen Canyon Group (1)
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Jurassic
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Lower Jurassic
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East Berlin Formation (1)
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Portland Formation (1)
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Middle Jurassic
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Aalenian (1)
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San Rafael Group (1)
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Upper Jurassic
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Galice Formation (1)
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Josephine Ophiolite (2)
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Morrison Formation (2)
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Orocopia Schist (1)
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Triassic
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Moenkopi Formation (1)
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Upper Triassic
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Chinle Formation (2)
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Norian (1)
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metal ores
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base metals (1)
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copper ores (1)
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gold ores (4)
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iron ores (1)
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molybdenum ores (1)
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polymetallic ores (1)
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rare earth deposits (1)
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silver ores (1)
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metals
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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 (2)
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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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-
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aluminum
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Al-26 (1)
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gold (1)
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lead
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Pb-206/Pb-204 (3)
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Pb-207/Pb-204 (2)
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Pb-208/Pb-204 (2)
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Pb-210 (1)
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rare earths
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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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metamorphic rocks
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amphibolites (1)
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cataclasites (1)
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eclogite (1)
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gneisses
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augen gneiss (1)
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paragneiss (2)
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marbles (1)
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metasedimentary rocks
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paragneiss (2)
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metavolcanic rocks (1)
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mylonites
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pseudotachylite (1)
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phyllites (1)
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quartzites (1)
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schists (1)
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metamorphism (8)
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metasomatism (1)
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meteorology (1)
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Mexico
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Baja California (1)
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Colorado River delta (1)
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Mexico state
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Federal District Mexico
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Mexico City Mexico (1)
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Sonora Mexico (3)
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Valley of Mexico (1)
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mineral deposits, genesis (3)
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mineral exploration (2)
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mineral resources (3)
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minerals (1)
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mining geology (1)
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Mohorovicic discontinuity (1)
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mud volcanoes (1)
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North America
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Appalachian Basin (3)
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Appalachians
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Allegheny Mountains (1)
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Appalachian Plateau (2)
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Blue Ridge Mountains (1)
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Blue Ridge Province (6)
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Central Appalachians (2)
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Cumberland Plateau (1)
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Northern Appalachians (1)
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Piedmont
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Inner Piedmont (1)
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Southern Appalachians (1)
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Valley and Ridge Province (5)
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Basin and Range Province
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Great Basin (5)
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Canadian Shield
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Churchill Province
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Rae Province (1)
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Superior Province (2)
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Cerro Prieto Fault (1)
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Great Plains (1)
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Gulf Coastal Plain (5)
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Keweenawan Rift (2)
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Lake Superior region (1)
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North American Cordillera (2)
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Peninsular Ranges Batholith (1)
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Rio Grande Rift (4)
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Rocky Mountains
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Southern Rocky Mountains (1)
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U. S. Rocky Mountains
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Sangre de Cristo Mountains (1)
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Spanish Peaks (1)
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Wasatch Range (2)
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Wet Mountains (1)
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Skagit Valley (1)
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Sonoran Desert (1)
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Western Interior (1)
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nuclear facilities (1)
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Oceania
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Polynesia
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Hawaii
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Mauna Loa (1)
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oil and gas fields (4)
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orogeny (6)
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oxygen
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O-18/O-16 (1)
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Pacific Coast (1)
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paleoclimatology (11)
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paleoecology (13)
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paleogeography (20)
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paleomagnetism (3)
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paleontology (2)
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Paleozoic
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Arbuckle Group (2)
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Berea Sandstone (1)
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Bird Spring Formation (1)
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Cambrian
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Lower Cambrian
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Rome Formation (1)
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Upper Cambrian
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Copper Ridge Dolomite (1)
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Potsdam Sandstone (1)
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Carboniferous
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Lower Carboniferous (1)
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Mississippian
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Borden Group (2)
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Lower Mississippian
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Cuyahoga Formation (3)
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Osagian (3)
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Pocono Formation (2)
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Tournaisian (1)
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Price Formation (1)
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Sunbury Shale (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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Valmeyeran (1)
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Pennsylvanian
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Conemaugh Group (5)
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Middle Pennsylvanian
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Allegheny Group (4)
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Monongahela Group (2)
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Pittsburgh Coal (1)
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Pottsville Group (3)
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Upper Pennsylvanian
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Ames Limestone (1)
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Glenshaw Formation (2)
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Upper Carboniferous
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Westphalian (1)
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Catskill Formation (3)
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Chattanooga Shale (1)
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Devonian
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Middle Devonian
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Eifelian (1)
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Marcellus Shale (1)
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Onondaga Limestone (1)
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Millboro Shale (1)
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Upper Devonian
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Cleveland Member (1)
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Famennian
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upper Famennian (1)
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Hampshire Formation (3)
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Ohio Shale (3)
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Olentangy Shale (1)
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Dunkard Group (4)
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Knox Group (1)
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lower Paleozoic
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Chopawamsic Formation (1)
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Conococheague Formation (1)
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New Albany Shale (1)
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Ordovician
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Chickamauga Group (1)
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Lower Ordovician (2)
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Martinsburg Formation (1)
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Middle Ordovician
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Bromide Formation (1)
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Darriwilian (1)
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Platteville Formation (1)
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Simpson Group (1)
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Upper Ordovician
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Cincinnatian (1)
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Fairview Formation (1)
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Kope Formation (2)
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Permian
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Lower Permian
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Leonardian (1)
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Wolfcampian (1)
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Sauk Sequence (1)
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Shawangunk Formation (1)
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Silurian
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Lower Silurian
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Brassfield Formation (1)
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Llandovery
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Rhuddanian (1)
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Wenlock (1)
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Upper Silurian
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Bloomsburg Formation (1)
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Supai Formation (1)
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Woodford Shale (1)
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palynology (1)
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palynomorphs
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miospores
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pollen (2)
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petroleum
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natural gas (2)
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petrology (2)
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Phanerozoic (3)
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Plantae
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Pteridophyta
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Lycopsida
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Lepidodendron (1)
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Spermatophyta
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Angiospermae
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Dicotyledoneae (1)
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Gymnospermae
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Coniferales (1)
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plate tectonics (17)
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pollution (9)
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potash (1)
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Precambrian
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Animikie Group (1)
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Archean (1)
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Baltimore Gneiss (1)
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Biwabik Iron Formation (1)
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Carrizo Mountain Formation (1)
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Catoctin Formation (1)
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Hazel Formation (2)
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upper Precambrian
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Proterozoic
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Keweenawan (1)
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Mesoproterozoic
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Belt Supergroup (1)
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Neoproterozoic
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Cryogenian (1)
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Ediacaran (1)
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Paleoproterozoic
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Virginia Formation (1)
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reclamation (3)
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reefs (2)
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remote sensing (7)
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roads (19)
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rock mechanics (15)
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sea-floor spreading (1)
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sea-level changes (5)
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sedimentary petrology (3)
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sedimentary rocks
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bone beds (1)
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carbonate rocks
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dolostone (2)
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grainstone (2)
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limestone
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micrite (1)
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microbialite (1)
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packstone (1)
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wackestone (1)
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chemically precipitated rocks
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evaporites (3)
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iron formations (1)
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taconite (1)
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tufa (1)
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clastic rocks
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black shale (3)
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claystone (3)
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conglomerate (1)
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diamictite (2)
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eolianite (1)
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marl (1)
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mudstone (10)
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red beds (3)
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sandstone (14)
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shale (9)
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siltstone (4)
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coal
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anthracite (1)
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gas shale (1)
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sedimentary structures
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bedding plane irregularities (2)
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biogenic structures
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bioherms
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mud mounds (1)
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bioturbation (2)
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lebensspuren (1)
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microbial mats (1)
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stromatolites (3)
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thrombolites (1)
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planar bedding structures
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bedding (1)
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cross-bedding (1)
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laminations (1)
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rhythmite (1)
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varves (1)
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secondary structures
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concretions (2)
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septaria (1)
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