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Cephalopoda
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Ammonoidea
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Ammonites (1)
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Gastropoda (1)
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Porifera (1)
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Protista
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Foraminifera (7)
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Radiolaria (3)
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microfossils
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Conodonta (4)
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palynomorphs
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Dinoflagellata
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Peridinium (1)
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miospores
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pollen (1)
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Plantae
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algae
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calcareous algae (1)
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diatoms (4)
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nannofossils
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Nannoconus (2)
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Pteridophyta
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Lycopsida (1)
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Sphenopsida
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Sphenophyllum (1)
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Spermatophyta
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Angiospermae (1)
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Gymnospermae (1)
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geochronology methods
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(U-Th)/He (2)
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Ar/Ar (96)
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exposure age (7)
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fission-track dating (2)
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He/He (1)
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infrared stimulated luminescence (1)
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K/Ar (43)
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Lu/Hf (1)
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optically stimulated luminescence (1)
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paleomagnetism (46)
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Pb/Pb (1)
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Rb/Sr (3)
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tephrochronology (49)
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Th/U (14)
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thermochronology (2)
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thermoluminescence (2)
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tree rings (7)
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U/Pb (36)
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uranium disequilibrium (9)
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geologic age
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Anthropocene (1)
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Cenozoic
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Bronze Age (5)
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Koobi Fora Formation (4)
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middle Cenozoic (1)
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Omo Group (3)
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Quaternary
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Cordilleran ice sheet (3)
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Holocene
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lower Holocene (7)
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Mesolithic (1)
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Middle Ages (1)
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middle Holocene (3)
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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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Roman period (3)
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Mazama Ash (1)
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Pleistocene
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Bandelier Tuff (5)
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Bishop Tuff (12)
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lower Pleistocene (3)
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Matuyama Chron (2)
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middle Pleistocene (2)
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upper Pleistocene
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Neapolitan Yellow Tuff (2)
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Weichselian
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upper Weichselian
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Allerod (1)
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Younger Dryas (1)
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Wisconsinan
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upper Wisconsinan
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Fraser Glaciation (1)
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upper Quaternary
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Brunhes Chron (3)
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Shungura Formation (3)
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Stone Age
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Mesolithic (1)
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Paleolithic (1)
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Tertiary
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Apache Leap Tuff (1)
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John Day Formation (2)
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lower Tertiary (1)
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middle Tertiary (1)
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Neogene
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Miocene
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Columbia River Basalt Group (23)
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Ellensburg Formation (1)
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Grande Ronde Basalt (7)
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lower Miocene
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Burdigalian (1)
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middle Miocene (7)
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Paintbrush Tuff (2)
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Peach Springs Tuff (1)
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Picture Gorge Basalt (2)
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Saddle Mountains Basalt (3)
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upper Miocene (5)
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Wanapum Basalt (2)
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Pliocene
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lower Pliocene (2)
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upper Pliocene
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Piacenzian (1)
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Paleogene
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Eocene
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Castle Hayne Limestone (1)
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Clarno Formation (4)
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lower Eocene (1)
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middle Eocene (1)
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upper Eocene (2)
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Oligocene
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Fish Canyon Tuff (7)
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upper Oligocene (2)
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Paleocene
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lower Paleocene
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Danian (3)
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K-T boundary (10)
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upper Cenozoic
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Newer Volcanics (1)
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Nihewan Formation (1)
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Lake Bonneville (1)
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Laurentide ice sheet (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Albian (1)
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Aptian
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lower Aptian (1)
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Barremian (2)
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Valanginian (2)
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Yingcheng Formation (1)
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Mancos Shale (1)
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Middle Cretaceous (1)
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Upper Cretaceous
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Ferron Sandstone Member (1)
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K-T boundary (10)
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Lameta Formation (2)
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Maestrichtian (4)
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Tuolumne Intrusive Suite (2)
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Jurassic
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Ferrar Group (3)
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Kirkpatrick Basalt (1)
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Lower Jurassic
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Pliensbachian (1)
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Sinemurian (1)
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Toarcian (3)
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Triassic-Jurassic boundary (2)
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Middle Jurassic
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Bajocian
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Yakoun Group (1)
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Upper Jurassic
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Oxfordian (1)
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lower Mesozoic (2)
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Triassic
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Lower Triassic
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Permian-Triassic boundary (4)
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Middle Triassic
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Ladinian (1)
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Upper Triassic
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Carnian (3)
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Rhaetian (1)
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Triassic-Jurassic boundary (2)
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MIS 2 (1)
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Paleozoic
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Cambrian (1)
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Carboniferous
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Lower Carboniferous (1)
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Mississippian
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Middle Mississippian
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Visean (1)
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Stanley Group (1)
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Namurian (1)
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Pennsylvanian (1)
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Devonian
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Lower Devonian
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Emsian (1)
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Old Red Sandstone (1)
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Upper Devonian
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Kellwasser event (1)
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lower Paleozoic (2)
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Madera Formation (1)
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Ordovician
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Lower Ordovician
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Arenigian (1)
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Middle Ordovician
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Deicke Bentonite Bed (3)
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Millbrig Bentonite Bed (3)
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Platteville Formation (1)
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Upper Ordovician
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Caradocian
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Borrowdale Volcanic Group (1)
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Cincinnatian (1)
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Katian (1)
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Mohawkian (1)
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Sandbian (1)
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Womble Shale (1)
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Permian
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Guadalupian
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Capitanian (3)
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Lower Permian (1)
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Upper Permian
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Permian-Triassic boundary (4)
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Silurian
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Upper Silurian (1)
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upper Paleozoic
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Shanxi Formation (1)
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Phanerozoic (3)
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Precambrian
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Archean
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Neoarchean (1)
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Paleoarchean (1)
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Kingston Peak Formation (1)
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North Shore Volcanics (2)
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Onverwacht Group (1)
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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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Gawler Range Volcanics (1)
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Neoproterozoic
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Cryogenian (1)
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Marinoan (1)
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Sturtian (1)
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Ventersdorp Supergroup (1)
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igneous rocks
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extrusive rocks (9)
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igneous rocks
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carbonatites (7)
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granophyre (3)
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hypabyssal rocks (1)
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kamafugite (1)
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kimberlite (10)
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peperite (2)
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picrite (1)
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plutonic rocks
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anorthosite (1)
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diabase (1)
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diorites
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plagiogranite (1)
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quartz diorites (1)
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trondhjemite (1)
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essexite (1)
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granites
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aplite (1)
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A-type granites (1)
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granite porphyry (1)
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leucogranite (1)
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microgranite (1)
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granodiorites (1)
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lamproite (1)
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pegmatite (2)
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syenites
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nepheline syenite (1)
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quartz syenite (1)
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ultramafics
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peridotites
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lherzolite (1)
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spinel lherzolite (1)
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spinel peridotite (1)
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pyroxenite
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garnet pyroxenite (1)
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porphyry
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vitrophyre (1)
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volcanic rocks
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adakites (1)
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andesites (71)
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basalts
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alkali basalts
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alkali olivine basalt (2)
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hawaiite (5)
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mugearite (3)
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trachybasalts (2)
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columnar basalt (2)
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flood basalts (43)
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mid-ocean ridge basalts (4)
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ocean-island basalts (5)
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olivine basalt (2)
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olivine tholeiite (2)
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shoshonite (7)
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tholeiite (12)
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tholeiitic basalt (8)
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trap rocks (1)
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basanite (6)
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benmoreite (3)
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dacites (37)
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glasses
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obsidian (9)
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palagonite (1)
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perlite (1)
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volcanic glass (18)
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komatiite (1)
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latite (4)
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leucitite (2)
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nephelinite (3)
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phonolites (13)
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pyroclastics
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andesite tuff (1)
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ash-flow tuff (25)
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hyaloclastite (6)
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ignimbrite (66)
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pumice (78)
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rhyolite tuff (10)
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scoria (31)
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tuff (87)
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welded tuff (6)
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rhyodacites (9)
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rhyolites
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comendite (2)
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pantellerite (2)
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tephrite (3)
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trachyandesites (9)
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trachytes (17)
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vitrophyre (1)
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volcanic ash (92)
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metamorphic rocks
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K-bentonite (3)
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metamorphic rocks
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cataclasites (1)
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eclogite (1)
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fulgurite (1)
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gneisses
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paragneiss (1)
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impactites (1)
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