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all geography including DSDP/ODP Sites and Legs
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Africa
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Morocco (1)
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Arctic Ocean
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Far East
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Western Europe
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Wessex Basin (2)
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Scotland
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Hebrides
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Inner Hebrides
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Isle of Skye (1)
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Highland region Scotland
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Inverness-shire Scotland
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Isle of Skye (1)
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Wales
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Gwynedd Wales
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Merionethshire Wales
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Indian Ocean
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Red Sea
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Malay Archipelago
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Mexico
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Quintana Roo Mexico (1)
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North America
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Appalachian Basin (1)
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Appalachians
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Valley and Ridge Province (1)
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Gulf Coastal Plain (1)
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Rio Grande Rift (1)
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Western Interior
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Western Interior Seaway (2)
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Pacific Ocean
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North Pacific
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Northwest Pacific
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South China Sea (1)
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Yellow Sea
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Bohai Sea
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Bohai Bay (1)
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South Pacific
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Southwest Pacific
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Coral Sea
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Great Barrier Reef (1)
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West Pacific
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Northwest Pacific
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South China Sea (1)
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Southwest Pacific
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Great Barrier Reef (1)
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Permian Basin (2)
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San Joaquin Basin (1)
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South America
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Argentina
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Precordillera (1)
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United States
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Anadarko Basin (1)
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Book Cliffs (3)
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California (1)
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Colorado
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Garfield County Colorado (1)
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Florida
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Collier County Florida (1)
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Volusia County Florida (1)
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Floridan Aquifer (1)
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Nevada
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Lander County Nevada (1)
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New Mexico
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Socorro County New Mexico
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New York (1)
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Oklahoma
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Caddo County Oklahoma (1)
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Tennessee (1)
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Texas
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Ector County Texas (1)
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West Texas (1)
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Utah
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Grand County Utah (3)
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Millard County Utah (1)
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Uintah County Utah (1)
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Virginia (1)
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Wyoming
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Natrona County Wyoming (1)
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commodities
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bitumens (1)
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brines (2)
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energy sources (1)
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geothermal energy (1)
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metal ores
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beryllium ores (1)
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copper ores (1)
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gold ores (1)
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iron ores (1)
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molybdenum ores (1)
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rare earth deposits (1)
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mineral deposits, genesis (2)
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oil and gas fields (13)
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petroleum
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natural gas (7)
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elements, isotopes
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carbon
-
C-13/C-12 (22)
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-
chemical ratios (1)
-
isotope ratios (23)
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
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Rb-87/Sr-86 (1)
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Sm-147/Nd-144 (1)
-
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stable isotopes
-
C-13/C-12 (22)
-
Nd-144/Nd-143 (2)
-
O-18/O-16 (18)
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
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Rb-87/Sr-86 (1)
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S-34/S-32 (1)
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Sm-147/Nd-144 (1)
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Sr-87/Sr-86 (4)
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-
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metals
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alkali metals
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rubidium
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Rb-87/Sr-86 (1)
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-
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alkaline earth metals
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calcium
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Sr/Ca (1)
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magnesium (2)
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strontium
-
Rb-87/Sr-86 (1)
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Sr/Ca (1)
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Sr-87/Sr-86 (4)
-
-
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iron (3)
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lead
-
Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
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-
manganese (2)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (2)
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Sm-147/Nd-144 (1)
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samarium
-
Sm-147/Nd-144 (1)
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-
-
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oxygen
-
O-18/O-16 (18)
-
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sulfur
-
S-34/S-32 (1)
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-
-
fossils
-
Chordata
-
Vertebrata
-
Tetrapoda
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Reptilia
-
Diapsida
-
Archosauria
-
dinosaurs (1)
-
-
Lepidosauria (1)
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-
-
-
-
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Graptolithina
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Graptoloidea
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Didymograptina
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Isograptus (1)
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-
-
-
ichnofossils (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda (1)
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Trilobitomorpha
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Trilobita
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Agnostida (1)
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-
-
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Brachiopoda (6)
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Bryozoa
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Cryptostomata (1)
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Trepostomata (1)
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Echinodermata
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Crinozoa
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Crinoidea (2)
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-
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Mollusca
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Cephalopoda
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Ammonoidea (1)
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Nautiloidea (1)
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-
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Porifera
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Demospongea (1)
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Protista
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Foraminifera
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Rotaliina
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Rotaliacea
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Miogypsinidae
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Miogypsina (1)
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-
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Thecamoeba (1)
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-
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microfossils
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Chitinozoa (5)
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Conodonta (4)
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palynomorphs
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acritarchs
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Baltisphaeridium (1)
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Chitinozoa (5)
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Plantae
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algae (1)
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-
-
geochronology methods
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fission-track dating (1)
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Re/Os (1)
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Sm/Nd (1)
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Sr/Sr (1)
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U/Pb (3)
-
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geologic age
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene
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lower Pleistocene (1)
-
upper Pleistocene (1)
-
-
-
Sierra Ladrones Formation (1)
-
Tertiary
-
Neogene
-
Miocene
-
middle Miocene (1)
-
upper Miocene (1)
-
-
Pliocene (4)
-
-
Paleogene
-
Eocene
-
Avon Park Formation (1)
-
-
Oligocene (1)
-
Paleocene
-
lower Paleocene
-
Danian (1)
-
-
-
-
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upper Cenozoic (1)
-
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Dalradian (1)
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Mesozoic
-
Cretaceous
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Lower Cretaceous
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Aptian (1)
-
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Middle Cretaceous (1)
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Upper Cretaceous
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Blackhawk Formation (2)
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Ferron Sandstone Member (1)
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Frontier Formation (2)
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-
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Jurassic
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Lower Jurassic
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Toarcian (1)
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upper Liassic (1)
-
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Middle Jurassic
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Bajocian
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Etive Formation (1)
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Rannoch Formation (1)
-
-
-
Upper Jurassic
-
Arab Formation (2)
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Kimmeridgian (2)
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Tithonian (1)
-
-
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Triassic
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Lower Triassic (1)
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Sherwood Sandstone (1)
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Upper Triassic
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Rhaetian
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Penarth Group (1)
-
-
-
-
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Paleozoic
-
Cambrian
-
Lower Cambrian (1)
-
Middle Cambrian
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Wheeler Formation (1)
-
-
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Carboniferous
-
Lower Carboniferous
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Dinantian (2)
-
-
Middle Carboniferous (1)
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Mississippian
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Madison Group (1)
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Pennsylvanian
-
Middle Pennsylvanian
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Moscovian (1)
-
-
-
Upper Carboniferous (1)
-
-
Devonian
-
Middle Devonian
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Elk Point Group (1)
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Winnipegosis Formation (1)
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-
Old Red Sandstone (1)
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Upper Devonian
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Famennian
-
Wabamun Group (1)
-
-
-
-
Exshaw Formation (1)
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Knox Group (1)
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lower Paleozoic (3)
-
Ordovician
-
Lower Ordovician
-
Arenigian
-
Ballantrae Complex (1)
-
-
Floian (4)
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Tremadocian (4)
-
-
Middle Ordovician
-
Dapingian (3)
-
Darriwilian (5)
-
Llanvirnian (1)
-
-
Pogonip Group (1)
-
Skiddaw Slates (1)
-
Upper Ordovician
-
Caradocian
-
Borrowdale Volcanic Group (1)
-
-
-
Valmy Formation (1)
-
-
Permian
-
Guadalupian
-
Grayburg Formation (1)
-
-
Khuff Formation (5)
-
Lower Permian
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Wolfcampian (1)
-
-
Middle Permian (1)
-
Rotliegendes (1)
-
-
Road River Formation (1)
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Silurian
-
Lower Silurian
-
Llandovery
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Aeronian (2)
-
-
-
-
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic
-
Ediacaran (1)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
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plutonic rocks
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gabbros (1)
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lamprophyres (1)
-
-
volcanic rocks
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andesites (2)
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basalts (1)
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dacites (1)
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rhyolites (1)
-
-
-
ophiolite (1)
-
-
metamorphic rocks
-
metamorphic rocks
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metasedimentary rocks (1)
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metasomatic rocks
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skarn (1)
-
-
-
ophiolite (1)
-
turbidite (3)
-
-
minerals
-
carbonates
-
ankerite (1)
-
aragonite (2)
-
calcite (13)
-
dolomite (14)
-
siderite (3)
-
-
oxides
-
cassiterite (1)
-
-
phosphates
-
apatite (1)
-
-
silicates
-
chain silicates
-
pyroxene group
-
clinopyroxene (1)
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
K-feldspar (1)
-
-
-
silica minerals
-
quartz (3)
-
-
sodalite group
-
helvite (1)
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (2)
-
-
-
-
sheet silicates
-
chlorite group
-
chlorite (1)
-
-
clay minerals
-
kaolinite (1)
-
-
illite (1)
-
-
-
sulfates
-
anhydrite (2)
-
-
sulfides
-
helvite (1)
-
-
-
Primary terms
-
absolute age (6)
-
Africa
-
North Africa
-
Morocco (1)
-
-
-
Arctic Ocean
-
Barents Sea (1)
-
-
Asia
-
Arabian Peninsula
-
Kuwait (1)
-
Oman
-
Oman Mountains (7)
-
-
Qatar (1)
-
Saudi Arabia
-
Ghawar Field (3)
-
-
United Arab Emirates
-
Abu Dhabi (1)
-
Ras al-Khaimah (1)
-
-
-
Far East
-
Borneo (1)
-
China
-
Altun Mountains (1)
-
Bohaiwan Basin (2)
-
Guangdong China (1)
-
Guizhou China (4)
-
Hubei China
-
Yichang China (5)
-
-
Hunan China (1)
-
Jiangxi China (1)
-
Qaidam Basin (1)
-
Shandong China
-
Dongying Depression (1)
-
-
Sichuan Basin (1)
-
South China Block (6)
-
Xinjiang China
-
Kuqa Depression (1)
-
Tarim Basin (2)
-
-
Yangtze Platform (4)
-
Yangtze River valley (1)
-
Yangtze Three Gorges (1)
-
Yunnan China
-
Kunming China (1)
-
-
-
Philippine Islands
-
Palawan (1)
-
-
-
Middle East
-
Iran (4)
-
Zagros (1)
-
-
Southeast Asia (1)
-
-
Atlantic Ocean
-
North Atlantic
-
Caribbean Sea (1)
-
Great Bahama Bank (3)
-
North Sea
-
Brent Field (1)
-
Troll Field (1)
-
-
-
-
Australasia
-
Australia
-
Amadeus Basin (1)
-
Georgina Basin (1)
-
New South Wales Australia (1)
-
Northern Territory Australia (1)
-
Victoria Australia (1)
-
Western Australia
-
Canning Basin (2)
-
-
-
-
biogeography (7)
-
bitumens (1)
-
brines (2)
-
Canada
-
Eastern Canada
-
Newfoundland and Labrador
-
Newfoundland
-
Great Northern Peninsula (1)
-
-
-
Quebec
-
Gaspe Peninsula (1)
-
-
-
Elk Point Basin (1)
-
Western Canada
-
Alberta
-
Peace River Arch (1)
-
-
British Columbia (1)
-
Northwest Territories (1)
-
Saskatchewan (1)
-
Yukon Territory (1)
-
-
-
carbon
-
C-13/C-12 (22)
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
-
Jamaica (1)
-
-
Lesser Antilles
-
Barbados (1)
-
Trinidad and Tobago
-
Trinidad (1)
-
-
Virgin Islands
-
U. S. Virgin Islands
-
Saint Croix (1)
-
-
-
-
-
Bahamas (3)
-
Cayman Islands
-
Grand Cayman Island (3)
-
-
-
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene
-
lower Pleistocene (1)
-
upper Pleistocene (1)
-
-
-
Sierra Ladrones Formation (1)
-
Tertiary
-
Neogene
-
Miocene
-
middle Miocene (1)
-
upper Miocene (1)
-
-
Pliocene (4)
-
-
Paleogene
-
Eocene
-
Avon Park Formation (1)
-
-
Oligocene (1)
-
Paleocene
-
lower Paleocene
-
Danian (1)
-
-
-
-
-
upper Cenozoic (1)
-
-
Central America
-
Belize (1)
-
-
Chordata
-
Vertebrata
-
Tetrapoda
-
Reptilia
-
Diapsida
-
Archosauria
-
dinosaurs (1)
-
-
Lepidosauria (1)
-
-
-
-
-
-
climate change (1)
-
crystal structure (1)
-
diagenesis (50)
-
ecology (1)
-
economic geology (1)
-
energy sources (1)
-
Europe
-
Baltic region
-
Estonia
-
Saaremaa (1)
-
-
Latvia (1)
-
-
Pyrenees
-
Spanish Pyrenees (1)
-
-
Southern Europe
-
Iberian Peninsula
-
Spain
-
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1-20 OF 149 RESULTS FOR
Dawan Formation
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Journal Article
Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 06 March 2007
Canadian Journal of Earth Sciences (2007) 44 (1): 9–24.
...Renbin Zhan; Jisuo Jin; Pengfei Chen Abstract Systematic and statistical study of brachiopods from the Dawan Formation of the Yichang area, western Hubei Province, central China, indicates that, at generic and specific levels, the α diversity of Early to Mid Ordovician brachiopods in the study area...
Journal Article
Changing paleogeographical affinities of the acritarch assemblages throughout the Dawan Formation (Arenig, Yichang area, South China)
Journal: Palynology
Publisher: AASP -The Palynological Society
Published: 01 October 1998
Palynology (1998) 22 (1): 181–196.
...Marco Tongiorgi; Yin Leiming; Anna di Milia; Christiana Ribecai Abstract The lower part of the Dawan Formation (lower Arenig) from both the Huanghuachang and the Daping sections (Yangtze Platform, Hubei Province, South China) has yielded rich acritarch assemblages dominated by the "cold water taxa...
Image
Taxonomic composition of the brachiopod fauna from the Dawan Formation, Che...
in Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
> Canadian Journal of Earth Sciences
Published: 06 March 2007
Fig. 3. Taxonomic composition of the brachiopod fauna from the Dawan Formation, Chenjiahe section, Yichang area.
Image
Common elements of the Sinorthis typica Community from the lower Dawan Fo...
in Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
> Canadian Journal of Earth Sciences
Published: 06 March 2007
Fig. 7. Common elements of the Sinorthis typica Community from the lower Dawan Formation of Yichang area and the Meitan Formation of the Tongzi area. (A, B) Sinorthis typica , NIGP140787 and 140788, ventral and dorsal internal moulds, Dawan Formation, Chenjiahe section, Yichang. (C) Leptella
Image
Fig. 8 Type specimens of two species of Nereidella . ( A–C ) Nereidella...
in Onshore migration of a deep-water brachiopod fauna from the Lower Ordovician Tonggao Formation, Jiangnan Slope, southeastern Guizhou Province, South China This article is one of a series of papers published in this Special Issue on the theme The dynamic reef and shelly communities of the Paleozoic. This Special is in honour of our colleague and friend Paul Copper .
> Canadian Journal of Earth Sciences
Published: 31 March 2008
Fig. 8 Type specimens of two species of Nereidella . ( A–C ) Nereidella typa Wang 1955, lower Dawan Formation, early Floian, Fenxiang, northern Yichang, western Hubei Province; (A) NIGP7423, holotype, dorsal view of conjoined shell; (B) NIGP7427, paratype, dorsal interior; (C) NIGP47079
Image
Stratigraphic ranges of brachiopods and their associations in the Dawan For...
in Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
> Canadian Journal of Earth Sciences
Published: 06 March 2007
Fig. 2. Stratigraphic ranges of brachiopods and their associations in the Dawan Formation, Chenjiahe section, Huanghuachang, northern Yichang, western Hubei Province. Circled numbers denote the number brachiopod genera in each graptolitic biozone. HF, Hunghuayuan Formation; KF, Kuniutan Formation.
Image
Photographs illustrating the lithology of each formation: ( a ) the Lunshan...
in High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China: implications for global correlation
> Journal of the Geological Society
Published: 04 February 2020
and the underlying Nantsinkuan Formation in the Gudongkou section; ( e ) the Fenhsiang Formation in the Gudongkou section; ( f ) the Hunghuayuan Formation in the Gudongkou section; ( g ) the Dawan Formation in the Gudongkou section; ( h ) the Zitai Formation in the Xianghsuidong section.
Image
Cluster analysis of five Early–Mid Ordovician brachiopod faunas from the D...
in Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
> Canadian Journal of Earth Sciences
Published: 06 March 2007
; Yichang: Dawan Formation, Chenjiahe section; Changning: Daguanshan Formation, Shuanghe section; Chengkou, Yingpan Formation, Houping section.
Image
(A) Principle component analysis and (B) cluster analysis of 21 collections...
in Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
> Canadian Journal of Earth Sciences
Published: 06 March 2007
Fig. 5. (A) Principle component analysis and (B) cluster analysis of 21 collections from the Dawan Formation, Chenjiahe section, northern Yichang area. Four brachiopod dominated associations could be recognized: ( a ) the Leptella grandis Association, ( b ) the Yangtzeella poloi – Nereidella
Image
The tropical and temperate (but not high‐latitude) Gondwanan brachiopod Ya...
Published: 01 January 2000
Fig. 7. The tropical and temperate (but not high‐latitude) Gondwanan brachiopod Yangzteela poloi (Martelli). ( a ) Upper Dawan Formation (Arenig), Huanghuachang, China, ventral interior, BB 68364, × 2; ( b, c ) Sobova Limestone (Arenig), Seydişehir, Turkey: ( b ) dorsal interior mould, BC50861
Image
Typical brachiopods of the Leptella grandis Association from the basal Da...
in Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
> Canadian Journal of Earth Sciences
Published: 06 March 2007
Fig. 6. Typical brachiopods of the Leptella grandis Association from the basal Dawan Formation, Chenjiahe section, Yichang area, western Hubei. (A–C) Leptella grandis , NIGP140804, 140782, and 140783, ventral valve, and two dorsal internal moulds. (D) Yangtzeella poloi , NIGP140807, dorsal
Image
Representative brachiopods of the Protoskenidioides huanghuaensis Associa...
in Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
> Canadian Journal of Earth Sciences
Published: 06 March 2007
Fig. 8. Representative brachiopods of the Protoskenidioides huanghuaensis Association from the upper Dawan Formation, Chenjiahe section, Yichang. (A–C) Protoskenidioides huanghuaensis , NIGP140790, 140791, and 140792, dorsal, dorsal, and ventral internal moulds. (D) Yangtzeella poloi
Image
Brachiopod species characteristic of the Yangtzeella poloi – Nereidella ...
in Brachiopod diversification during the Early-Mid Ordovician: an example from the Dawan Formation, Yichang area, central China
> Canadian Journal of Earth Sciences
Published: 06 March 2007
Fig. 9. Brachiopod species characteristic of the Yangtzeella poloi – Nereidella typa Association in the upper Dawan Formation, Chenjiahe (F, L, M) and Zhenjin (A–E, G–K) sections, Yichang. (A–E) Martellia ichangensis , W2830, dorsal, ventral, lateral, posterior, and anterior views
Image
Figure 2 —Stratigraphic occurrences of rhipidognathid conodonts from Austr...
Published: 01 January 2001
Katkoyeh Formation; 14–16, upper Honghuayuan Formation and lower Dawan Formation; 17–19, lower Meitan Formation; 20, 21, Liangjiashan Formation; 22, San Juan Formation; 23, Ponon Trehue Formation; 24, Deep Kill Shale (eastern New York); 25, Factory Cove Member, Shallow Bay Formation of Cow
Image
Cartoon model illustrating the formation of the Dawan gabbros, Dawan andesi...
in Early Paleozoic slab rollback in the North Altun, Northwest China: New evidence from mafic intrusions and high-Mg andesites
> Lithosphere
Published: 17 October 2018
Figure 15. Cartoon model illustrating the formation of the Dawan gabbros, Dawan andesites, and Dabanxi gabbros (see details in the text). DHMA—Dawan high-Mg andesite.
Journal Article
High-resolution carbon isotope stratigraphy of the Lower and Middle Ordovician succession of the Yangtze Platform, China: implications for global correlation
Rongchang Wu, Jianbo Liu, Mikael Calner, Fangyi Gong, Oliver Lehnert, Xiaocong Luan, Lixia Li, Renbin Zhan
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 04 February 2020
Journal of the Geological Society (2020) 177 (3): 537–549.
... and the underlying Nantsinkuan Formation in the Gudongkou section; ( e ) the Fenhsiang Formation in the Gudongkou section; ( f ) the Hunghuayuan Formation in the Gudongkou section; ( g ) the Dawan Formation in the Gudongkou section; ( h ) the Zitai Formation in the Xianghsuidong section. ...
Image
Figure 1. Paleogeographic reconstructions of distribution of limestone-marl...
Published: 01 March 2003
Limestone, Balclatchie Shales; Ponon Trehue, Edinburg, Clays Ferry, Martinsburg, Bull Fork, Drakes, Pamelia, Catoche, Table Point, Whitby, ?Ibbett Bay, Killerod, Yanwashan, Dawan Formations, and others. C: Permian—Rattendorf Group, Lower Magnesia, Khuff Formations, and others. D: Jurassic—Lias, Dogger, Malm
Image
Field photographs of the Dawan mafic intrusion, rhyolite from the lower and...
in Early Paleozoic slab rollback in the North Altun, Northwest China: New evidence from mafic intrusions and high-Mg andesites
> Lithosphere
Published: 17 October 2018
Figure 4. Field photographs of the Dawan mafic intrusion, rhyolite from the lower and upper Lapeiquan Formation, and the Dabanxi mafic intrusion: (A) cumulate structure of the Dawan gabbros; (B) euhedral pyroxenes in the Dawan gabbros; (C) intrusive contact between the Dawan mafic intrusion
Journal Article
Early–Middle Ordovician brachiopod diversification in the middle Yangtze region of South China
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 19 February 2020
Canadian Journal of Earth Sciences (2020) 57 (8): 999–1009.
..., from the bottom up, include the Nanjinguan Formation, the Fenxiang Formation, and the Honghuayuan Formation, and the Middle Ordovician strata include the Dawan Formation and the Guniutan Formation. The Early–Middle Ordovician conodont species in this region show the same characteristics as conodonts...
Journal Article
Early Paleozoic slab rollback in the North Altun, Northwest China: New evidence from mafic intrusions and high-Mg andesites
Journal: Lithosphere
Publisher: GSW
Published: 17 October 2018
Lithosphere (2018) 10 (6): 687–707.
...Figure 15. Cartoon model illustrating the formation of the Dawan gabbros, Dawan andesites, and Dabanxi gabbros (see details in the text). DHMA—Dawan high-Mg andesite. ...
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