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all geography including DSDP/ODP Sites and Legs
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Africa
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Idaho
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Custer County Idaho
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Lemhi County Idaho (2)
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Little Belt Mountains (1)
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Reptilia
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Synapsida
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Invertebrata
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Paleogene
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Claron Formation (1)
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Eocene
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Lake Gosiute (1)
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Mesozoic
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Great Valley Sequence (1)
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Sauk Sequence (1)
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Silurian
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Phanerozoic (1)
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Precambrian
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Animikie Group (1)
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J-M Reef (1)
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Paleoproterozoic (31)
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igneous rocks
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Primary terms
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absolute age (50)
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Africa
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Asia
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carbon
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Cenozoic
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Tertiary
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Paleogene
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Hanna Formation (3)
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Oligocene (3)
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upper Paleocene
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upper Cenozoic
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Chordata
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Aves (1)
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Mammalia
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Multituberculata (2)
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Theria
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-
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Reptilia
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Diapsida
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Archosauria
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dinosaurs
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Ornithischia
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Hadrosauridae (1)
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-
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Synapsida
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Therapsida
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Dicynodontia
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Lystrosaurus (1)
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clay mineralogy (1)
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climate change (4)
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-
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volcanic rocks
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inclusions (3)
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Indian Ocean Islands
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intrusions (23)
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Invertebrata
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Chelicerata (1)
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Insecta (1)
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-
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Echinodermata
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Crinozoa
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Mollusca (2)
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-
isotopes
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Pb-206/Pb-204 (2)
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Sm-147/Nd-144 (2)
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-
stable isotopes
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deuterium (1)
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Nd-144/Nd-143 (5)
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O-18 (1)
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Os-188/Os-187 (1)
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Pb-206/Pb-204 (2)
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Pb-207/Pb-204 (2)
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Pb-207/Pb-206 (4)
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Pb-208/Pb-204 (1)
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S-34/S-32 (2)
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Sm-147/Nd-144 (2)
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kaolin deposits (1)
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mantle (5)
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Mediterranean region
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Cyclades (1)
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-
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Mesozoic
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Cretaceous
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Dakota Formation (1)
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Lower Cretaceous
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Blackleaf Formation (1)
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Cedar Mountain Formation (1)
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Mancos Shale (1)
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Middle Cretaceous (3)
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Queen Charlotte Group (1)
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Upper Cretaceous
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Belly River Formation (1)
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Campanian
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Dinosaur Park Formation (1)
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Cenomanian (1)
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Harebell Formation (1)
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Judith River Formation (1)
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Kaiparowits Formation (1)
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K-T boundary (1)
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Maestrichtian (1)
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Senonian (2)
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Straight Cliffs Formation (1)
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Tropic Shale (1)
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Wahweap Formation (2)
-
-
-
Great Valley Sequence (1)
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Jurassic
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Carmel Formation (1)
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Upper Jurassic
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Morrison Formation (2)
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Stump Formation (1)
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-
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McHugh Complex (1)
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Navajo Sandstone (1)
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Triassic
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Lower Triassic
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Dinwoody Formation (1)
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Permian-Triassic boundary (1)
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Upper Triassic
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Chinle Formation (1)
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Shinarump Member (1)
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metal ores
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Sr-87/Sr-86 (3)
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-
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aluminum (1)
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hafnium
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Hf-177/Hf-176 (3)
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iron (1)
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lead
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Pb-206/Pb-204 (2)
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Pb-208/Pb-204 (1)
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mercury (2)
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Os-188/Os-187 (1)
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rare earths
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cerium (1)
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neodymium
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Nd-144/Nd-143 (5)
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Sm-147/Nd-144 (2)
-
-
samarium
-
Sm-147/Nd-144 (2)
-
-
-
-
metamorphic rocks
-
amphibolites (5)
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gneisses
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granite gneiss (1)
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orthogneiss (4)
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paragneiss (1)
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marbles (1)
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metaigneous rocks
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metabasite (1)
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metagabbro (1)
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metasedimentary rocks
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paragneiss (1)
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metavolcanic rocks (4)
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migmatites
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anatexite (1)
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mylonites (3)
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quartzites (5)
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schists
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metamorphism (24)
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Tieschitz Meteorite (1)
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Mexico
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North America
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Basin and Range Province
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Belt Basin (5)
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Canadian Shield
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Bighorn Mountains (2)
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Bridger Range (1)
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Wind River Range (4)
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-
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Rocky Mountains foreland (1)
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Sweetgrass Arch (1)
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Tanana River (1)
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Transcontinental Arch (1)
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Western Interior
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Western Interior Seaway (1)
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Williston Basin (1)
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oil and gas fields (2)
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orogeny (30)
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oxygen
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paleogeography (30)
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Paleozoic
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Cambrian
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Lower Cambrian (1)
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Carboniferous
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Mississippian
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Lower Mississippian
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Kinderhookian
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Banff Formation (1)
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-
-
Madison Group (1)
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Upper Mississippian
-
Hartselle Sandstone (1)
-
-
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Pennsylvanian
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Upper Pennsylvanian (1)
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-
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Devonian
-
Old Red Sandstone (1)
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Upper Devonian
-
Famennian (2)
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Frasnian
-
upper Frasnian (1)
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Jefferson Group (1)
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Nisku Formation (1)
-
-
-
lower Paleozoic (1)
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Ordovician (4)
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Permian
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Lower Permian (1)
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Phosphoria Formation (1)
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Upper Permian
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Permian-Triassic boundary (1)
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-
-
Sauk Sequence (1)
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Silurian
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Middle Silurian (1)
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upper Paleozoic (2)
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palynomorphs
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paragenesis (2)
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permafrost (1)
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petroleum
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petrology (3)
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Phanerozoic (1)
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Plantae
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Pteridophyta
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Lycopsida (1)
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-
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plate tectonics (27)
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pollution (1)
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Precambrian
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Animikie Group (1)
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Archean
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Eoarchean (1)
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J-M Reef (1)
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Mesoarchean (3)
-
Neoarchean (11)
-
Paleoarchean (3)
-
-
Biwabik Iron Formation (1)
-
Hadean (1)
-
Laramie anorthosite complex (1)
-
Pongola Supergroup (1)
-
Purcell System (1)
-
Spuhler Peak Formation (1)
-
Stillwater Complex (2)
-
upper Precambrian
-
Proterozoic
-
Bambui Group (1)
-
Great Oxidation Event (1)
-
Huronian (1)
-
Mesoproterozoic
-
Belt Supergroup (7)
-
Missoula Group (2)
-
Newland Limestone (1)
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Ravalli Group (1)
-
-
Neoproterozoic
-
Ediacaran (2)
-
-
Paleoproterozoic (31)
-
-
-
-
reclamation (1)
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packstone (1)
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chemically precipitated rocks
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-
-
clastic rocks
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arkose (1)
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black shale (1)
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conglomerate (7)
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mudstone (2)
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porcellanite (1)
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sandstone (13)
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coal (2)
-
-
sedimentary structures
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biogenic structures
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microbial mats (1)
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stromatolites (1)
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1-20 OF 205 RESULTS FOR
Medicine Peak Quartzite
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Journal Article
Comment and Reply on ‘Are these the oldest metazoan trace fossils?’: COMMENT: Are the Medicine Peak Quartzite “dubiofossils” fluid-evasion tracks? Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 01 October 1983
Geology (1983) 11 (10): 618–619.
Journal Article
Analysis of percussion cones Available to Purchase
Journal: Journal of Sedimentary Research
Publisher: SEPM Society for Sedimentary Geology
Published: 01 December 1963
Journal of Sedimentary Research (1963) 33 (4): 938–943.
...Donald R. Lamb; Robert B. Johnson Abstract Natural percussion cones are found on cobbles and boulders of quartzite of the Medicine Peak Quartzite (Precambrian) in Wyoming. Similar cones have been duplicated in the laboratory on cobbles of Medicine Peak Quartzite and on pieces of plate...
Journal Article
Glaciation of Libby Creek Canyon, east flank of Medicine Bow Mountains, southeastern Wyoming Available to Purchase
Journal: Rocky Mountain Geology
Publisher: University of Wyoming
Published: 01 April 1962
Rocky Mountain Geology (1962) 1 (1): 21–29.
... and are characterized by pronounced "knob-and-kettle" topography and tills rich in crystalline constituents. More recent deposits at the base of Medicine Bow Peak, W. of the source of Libby Creek, have been considered by some workers as recent moraines, but are more likely protalus ramparts overlying latest Pinedale...
Journal Article
In suspect terrane? Provenance of the late Archean Phantom Lake metamorphic suite, Sierra Madre, Wyoming Available to Purchase
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 12 January 2007
Canadian Journal of Earth Sciences (2006) 43 (10): 1557–1577.
.... The depositional environment and age of the Bridger Peak quartzite are uncertain ( Houston et al. 1992 ). The Bridger Peak quartzite is correlated with the Conical Peak quartzite of the Medicine Bow Mountains (Fig. 3 ), which is interpreted to be deposited in a fluvial to shallow-marine environment ( Houston et...
Journal Article
Stone nets on Medicine Bow Peak, Wyoming Available to Purchase
Journal: Rocky Mountain Geology
Publisher: University of Wyoming
Published: 01 April 1962
Rocky Mountain Geology (1962) 1 (1): 48.
...Brainerd Mears Abstract Periglacial polygons, 100 ft. above timberline, are restricted to soil in an alpine meadow on a diorite dike which cuts massive quartzite weathering to felsenmeer. The nets appear inactive because of lichen-covered surface blocks, a distinctive "A" soil horizon, deeply...
Journal Article
Filling the North American Proterozoic Tectonic Gap: 1.60–1.59-Ga Deformation and Orogenesis in Southern Wyoming, USA Available to Purchase
Journal: The Journal of Geology
Publisher: The University of Chicago Press
Published: 01 January 2006
The Journal of Geology (2006) 114 (1): 19–42.
... of the Rocky Mountains experiment). 40 Ar/ 39 Ar and U-Pb data define age patterns in the Sierra Madre that are delineated by discrete structures. North of the 1.78-Ga Divide Peak mylonite zone, a foreland structure associated with the Medicine Bow orogeny, 40 Ar/ 39 Ar biotite dates suggest cooling below 300...
Includes: Supplemental Content
Journal Article
A kinematic model linking the Sevier and Laramide belts in the Idaho-Montana fold-thrust belt, U.S. Cordillera Open Access
Journal: Geosphere
Publisher: Geological Society of America
Published: 27 October 2023
Geosphere (2023) 19 (6): 1565–1588.
... for the Medicine Lodge thrust, suggesting that the thrust cut across a large, pre-thrust fold in Mesoproterozoic quartzites, hence cutting locally down-section in the direction of transport ( Ruppel, 1994 ). Alternatively, the Fritz Creek and Medicine Lodge thrusts may represent two distinct ramps that branch off...
Journal Article
Testing the transpression hypothesis in the western part of the Cheyenne belt, Medicine Bow Mountains, southeastern Wyoming Available to Purchase
Journal: Rocky Mountain Geology
Publisher: University of Wyoming
Published: 01 January 2011
Rocky Mountain Geology (2011) 46 (2): 111–135.
... in the Medicine Bow Mountains of southeastern Wyoming. These shear zones are generally interpreted as a mid-crustal thrust system rotated to its present-day subvertical orientation during late-stage, orogen-scale folding. However, the map geometry, presence of large domains of S tectonites, and vertical mineral...
Journal Article
Devonian Stratigraphy, Sunwapta Pass Area, Alberta, Canada Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 September 1950
AAPG Bulletin (1950) 34 (9): 1826–1849.
...John L. Severson ABSTRACT A southeastward-plunging synclinal mountain ridge, capped by Mississippian rocks, rises from a base of Cambrian rocks in the Sunwapta Pass area. Detailed sections involving Silurian and Devonian rocks were studied from the Nigel Peak area on the north southward...
Journal Article
A new view of an old suture zone: Evidence for sinistral transpression in the Cheyenne belt Available to Purchase
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 July 2013
GSA Bulletin (2013) 125 (7-8): 1319–1337.
..., and deformation mechanism analyses of the northern mylonite zone of the eastern Medicine Bow Mountains. Mylonites of this zone record a complex deformation history, but the main deformation phase was sinistral/northwest-side-up oblique transpression. Evidence for southeast-side-up, dip-slip motion...
Journal Article
The Mesoproterozoic Beaverhead Impact Structure and Its Tectonic Setting, Montana-Idaho: 40 Ar/ 39 Ar and U-Pb Isotopic Constraints Available to Purchase
Journal: The Journal of Geology
Publisher: The University of Chicago Press
Published: 01 November 2003
The Journal of Geology (2003) 111 (6): 639–652.
... quartz veins commonly cut the gneiss and Proterozoic quartzite but are unknown in the Phanerozoic rocks of the upper Medicine Lodge Valley, although silicic shear zones and jasperoid are common. The black fine-grained, biotite-rich matrix in sample KT92-153a comprises about 30% of the rock; sample...
Includes: Supplemental Content
Journal Article
Structure, Burial History, and Petroleum Potential of Frontal Thrust Belt and Adjacent Foreland, Southwest Montana Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 May 1983
AAPG Bulletin (1983) 67 (5): 725–743.
... ( Fig. 1 ) as well as a number of small-displacement normal faults northeast of Lima. Fig. 2 —Relation of thickness of (a) Meade Peak and (b) Retort Members of Phosphoria Formation (Permian) to Medicine Lodge, Tendoy, and Snowcrest-Greenhorn thrust-fault systems in southwestern Montana. Isopachs...
Journal Article
GENERAL GEOLOGY OF GLACIER NATIONAL PARK AND ADJACENT AREAS, MONTANA Available to Purchase
Publisher: Canadian Society of Petroleum Geologists
Published: 01 August 1977
Bulletin of Canadian Petroleum Geology (1977) 25 (4): 736–751.
... Clapp and Deiss, 1931 Nelson and Dobell, 1961 McNamara Formation Mount Shields Formation McNamaro Formation Red Plume Banner Banner Banner Quartzite Quartzite Quartzite Quartzite Helena Formation Mount Shields Formation Shields Formation Shepard Shepard Shepard Shepard Miller Peak Quartzite Formation...
Journal Article
Growth and evolution of Neoarchean–Paleoproterozoic crust in the NW Wyoming Province: Evidence from zircon U-Pb age and Lu-Hf isotopes of the Montana metasedimentary terrane Available to Purchase
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 13 October 2023
GSA Bulletin (2024) 136 (5-6): 2460–2482.
... suggests that it differs from northern-bounding terranes. Viewed more broadly, the 2.7 Ga and 1.7 Ga age peaks that the Montana metasedimentary terrane shares with the global zircon age spectrum suggest that the drivers of these events in the Montana metasedimentary terrane were common throughout the Earth...
Journal Article
Early Archean to Mesoproterozoic evolution of the Wyoming Province: Archean origins to modern lithospheric architecture Available to Purchase
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 10 October 2003
Canadian Journal of Earth Sciences (2003) 40 (10): 1357–1374.
... subprovince, and two Archean terrains that may be allochthonous to the 3.0 Ga craton, (4) the Sierra Madre – Medicine Bow block, and (5) the Black Hills – Hartville block. A thick, fast lower crustal layer, imaged by Deep Probe, corresponds geographically with the Bighorn subprovince and may be an underplate...
Journal Article
Long-distance longitudinal transport of gravel across the Cordilleran thrust belt of Montana and Idaho Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 01 May 2000
Geology (2000) 28 (5): 439–442.
.... Downstream, it skirted the southern end of the Carmen culmination and crossed the northern part of the Maiden Peak basement-cored culmination before occupying a longitudinal valley in the footwall of the Medicine Lodge thrust south of segment A. The Hawley Creek paleoriver flowed farther to the south...
Journal Article
Late Pennsylvanian and Early Permian Sedimentation in Northeast Nevada Available to Purchase
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 November 1975
AAPG Bulletin (1975) 59 (11): 2079–2098.
... Pennsylvanian age consists of variegated chert-pebble conglomerate, brown quartzite, and minor amounts of gray limestone. Detritus composing this formation was derived from uplands of the Antler orogenic belt in central Nevada. In the Pequop Mountains the Diamond Peak Formation is approximately 1,200 ft (366 m...
Journal Article
Neoarchean and Paleoproterozoic crystalline basement rocks of north-central Idaho: Constraints on the formation of western Laurentia Available to Purchase
Jeffrey D. Vervoort, Reed S. Lewis, Christopher Fisher, Richard M. Gaschnig, Andrew C. Jansen, Rachel Brewer
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 January 2016
GSA Bulletin (2016) 128 (1-2): 94–109.
... and the Medicine Hat block, why don’t we see ages of magmatism more closely aligned with the record of metamorphism, which presumably reflects crustal thickening during collision? The difference between the 1.86 Ga magmatism and the peak of metamorphism has been previously recognized (e.g., Foster et al...
Journal Article
Paleoproterozoic transpressional shear zone, eastern Black Hills, South Dakota: Implications for the late tectonic history of the southern Trans-Hudson Orogen Available to Purchase
Journal: Rocky Mountain Geology
Publisher: University of Wyoming
Published: 01 January 2013
Rocky Mountain Geology (2013) 48 (2): 73–99.
... and reflect left-lateral, strike-slip displacement. Folds just southeast of the Laramie Peak shear zone, with ages for syndeformational titanite growth in fold hinge areas ranging from 1755–1740 Ma, provide strong evidence for renewed shortening and continuation of the Medicine Bow Orogeny...
Journal Article
The Wyoming Province: a distinctive Archean craton in Laurentian North America Available to Purchase
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 30 November 2006
Canadian Journal of Earth Sciences (2006) 43 (10): 1391–1397.
... lithosphere appear to be much more fertile for later melting than the adjacent Archean lithosphere, as exemplified by Cretaceous and younger magmatism and mineralization being largely confined to the Great Falls tectonic zone, rather than adjoining Archean lithosphere of either the Medicine Hat block...
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