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all geography including DSDP/ODP Sites and Legs
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Africa
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Kalahari Desert (1)
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North Africa
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Egypt
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Sinai Egypt (1)
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Tunisia (1)
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Southern Africa
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Botswana (1)
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South Africa (1)
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Andros Island (3)
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Arctic Ocean
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Norwegian Sea
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Haltenbanken (1)
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Asia
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Arabian Peninsula
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Oman (2)
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Saudi Arabia (1)
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Far East
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Borneo
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Brunei (1)
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China
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Guizhou China (1)
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Zhejiang China (1)
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Indian Peninsula
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India
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Madhya Pradesh India (1)
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Middle East
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Israel (3)
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Ob River (1)
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West Siberia
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Siberian Lowland (1)
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Atlantic Ocean
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Mid-Atlantic Ridge
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Atlantis Massif (1)
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North Atlantic
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Atlantis fracture zone (1)
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Atlantis Massif (1)
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Exuma Sound (2)
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Little Bahama Bank (2)
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North Sea
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Viking Graben (1)
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Northwest Atlantic (1)
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Straits of Florida (1)
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Australasia
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Australia
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New Zealand (3)
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Canada
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Newfoundland and Labrador
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Ontario (1)
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Lesser Antilles
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Bahamas (12)
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Central America
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Central Graben (1)
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Commonwealth of Independent States
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Russian Federation
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Urals
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West Siberia
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DSDP Site 504 (1)
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North America
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North American Cordillera
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North Island (2)
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Oceania
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Pacific Ocean
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East Pacific
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Northeast Pacific
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North Pacific
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Northeast Pacific
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South Pacific
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Southwest Pacific
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Coral Sea
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West Pacific
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Virginia
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Wyoming
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metal ores
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elements, isotopes
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C-13/C-12 (12)
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C-14 (5)
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halogens
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isotope ratios (7)
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isotopes
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C-14 (5)
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stable isotopes
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C-13/C-12 (12)
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O-18/O-16 (13)
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Sr-87/Sr-86 (1)
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metals
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strontium
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Sr-87/Sr-86 (1)
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iron (1)
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lead
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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)
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platinum ores (1)
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rare earths (1)
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zinc (1)
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oxygen
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O-18/O-16 (13)
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sulfur
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S-34/S-32 (1)
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fossils
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burrows (2)
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Chordata
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Vertebrata
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Tetrapoda
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Reptilia
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cyanobacteria (4)
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ichnofossils
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Invertebrata
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Brachiopoda (1)
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Echinodermata (1)
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Gastropoda (4)
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Porifera
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Stromatoporoidea (1)
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Protista
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Vermes (1)
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microfossils (9)
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palynomorphs
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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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Chlorophyta
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Chlorophyceae
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Codiaceae
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Coccolithophoraceae (1)
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diatoms (1)
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nannofossils (1)
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thallophytes (9)
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geochronology methods
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K/Ar (1)
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paleomagnetism (1)
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racemization (1)
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U/Pb (2)
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geologic age
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Cenozoic
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lower Cenozoic (1)
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Quaternary
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Holocene
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upper Holocene (2)
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Pleistocene
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Key Largo Limestone (1)
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upper Pleistocene
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Tyrrhenian (1)
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upper Quaternary (1)
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Tertiary
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Neogene
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Miocene
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upper Miocene
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Messinian (1)
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Paleogene
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Chadron Formation (1)
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Eocene
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lower Eocene
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Aquia Formation (1)
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upper Eocene (2)
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Oligocene
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Brule Formation (1)
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Paleocene
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lower Paleocene
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Danian (2)
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Paleocene-Eocene Thermal Maximum (1)
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White River Group (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Aptian
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Shuaiba Formation (1)
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Neocomian (1)
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Mishash Formation (1)
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Upper Cretaceous
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Campanian (1)
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Franciscan Complex (1)
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Jurassic
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Middle Jurassic
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Upper Jurassic
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Buckner Formation (1)
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Volgian (1)
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Statfjord Formation (1)
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Triassic
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Upper Triassic
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upper Mesozoic (1)
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Paleozoic
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Upper Cambrian
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Carboniferous
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Lower Carboniferous
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Dinantian (2)
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Mabou Group (1)
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Mississippian
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Macumber Formation (1)
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Middle Mississippian
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Visean (2)
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Windsor Group (1)
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Devonian
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Middle Devonian
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Eifelian (1)
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Winnipegosis Formation (1)
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Upper Devonian (1)
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Horton Group (1)
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Ordovician
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Upper Ordovician
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Red River Formation (1)
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Trentonian (1)
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Yeoman Formation (1)
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Permian
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Guadalupian
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Capitan Formation (1)
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Seven Rivers Formation (1)
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Lower Permian
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Al Khlata Formation (1)
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Phosphoria Formation (1)
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Upper Permian
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Yates Formation (1)
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Silurian
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Phanerozoic (2)
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Precambrian
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upper Precambrian
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Proterozoic
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igneous rocks
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volcanic rocks
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calcite (8)
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magnesian calcite (6)
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silicates
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framework silicates
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silica minerals
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chalcedony (1)
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orthosilicates
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sheet silicates
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clay minerals
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illite (2)
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sulfates
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pyrrhotite (1)
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sphalerite (2)
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sulfosalts (1)
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Primary terms
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absolute age (7)
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Africa
-
Kalahari Desert (1)
-
North Africa
-
Egypt
-
Sinai Egypt (1)
-
-
Tunisia (1)
-
-
Southern Africa
-
Botswana (1)
-
South Africa (1)
-
-
-
Arctic Ocean
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Norwegian Sea
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Haltenbanken (1)
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-
-
Asia
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Arabian Peninsula
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Oman (2)
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Saudi Arabia (1)
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Far East
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Borneo
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Brunei (1)
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China
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Zhejiang China (1)
-
-
-
Indian Peninsula
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India
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Madhya Pradesh India (1)
-
-
-
Middle East
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Israel (3)
-
-
Ob River (1)
-
West Siberia
-
Siberian Lowland (1)
-
-
-
Atlantic Ocean
-
Mid-Atlantic Ridge
-
Atlantis Massif (1)
-
-
North Atlantic
-
Atlantis fracture zone (1)
-
Atlantis Massif (1)
-
Exuma Sound (2)
-
Little Bahama Bank (2)
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North Sea
-
Viking Graben (1)
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-
Northwest Atlantic (1)
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Straits of Florida (1)
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-
-
Australasia
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Australia
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Northern Territory Australia
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HYC Deposit (1)
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Queensland Australia (2)
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South Australia (1)
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New Zealand (3)
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bacteria (3)
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biogeography (1)
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brines (3)
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Canada
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Maritime Provinces
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Newfoundland and Labrador
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Newfoundland
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Port au Port Peninsula (1)
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Ontario (1)
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Quebec
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Nunavut
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Belcher Islands (1)
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Saskatchewan (1)
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carbon
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C-13/C-12 (12)
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C-14 (5)
-
-
Caribbean region
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West Indies
-
Antilles
-
Greater Antilles
-
Hispaniola
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Dominican Republic (1)
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Haiti (1)
-
-
Jamaica (2)
-
-
Lesser Antilles
-
Barbados (1)
-
Netherlands Antilles
-
Bonaire (1)
-
-
-
-
Bahamas (12)
-
-
-
Cenozoic
-
lower Cenozoic (1)
-
Quaternary
-
Holocene
-
upper Holocene (2)
-
-
Pleistocene
-
Key Largo Limestone (1)
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Miami Limestone (1)
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upper Pleistocene
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Tyrrhenian (1)
-
-
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
-
Miocene
-
upper Miocene
-
Messinian (1)
-
-
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
lithification
Evidence for a rapid anthropoclastic rock cycle Available to Purchase
Seismic geomorphology of submarine landslides in the Chalk Group of the Danish Central Graben: implications for reservoir potential Available to Purchase
Abstract This study documents a variety of deposits created by submarine landslides within the Upper Cretaceous to lowermost Paleocene Chalk Group in the Danish Central Graben and investigates the impact of remobilization on porosity. Improved visualization of the landslides in 3D seismic data compared with previous studies was facilitated by better seismic data quality for the Chalk Group, the availability of a large stack of stratigraphy-consistent horizons and the use of spectral decomposition data. The illustrated examples are chosen to reflect the spectrum of deformation styles seen in the chalk and all have a well penetrating the affected succession. They include a large collapse (375 km 2) of an inversion ridge within the Kraka and Gorm formations, a field of large slide blocks (100–1000 m, 10–26 m) of likely lowermost Danian age embedded in the uppermost Ekofisk Formation, a debris flow system within the uppermost Tor Formation probably originating from the Ringkøbing–Fyn High and fine-grained bottom current sediment waves within the lowermost Danian Ekofisk Formation. In general, porosities are higher (10–25 porosity units) in the remobilized chalk compared with time-equivalent pelagic chalk in nearby reference wells. In earlier studies this has been linked to lack of bioturbation (resulting in limited grain repacking) in the remobilized chalks owing to high sedimentation rates, resulting in a relatively open fabric during initial burial. In contrast, surrounding and covering pelagic deposits could be much more effectively bioturbated, leading to tighter grain packing during burial. The insights of this study help in the seismic characterization of mud-grade carbonate oozes and have important applications in the reservoir modelling of mud-grade carbonate reservoirs (also in light of carbon capture and storage), and in palaeo-reconstructions of pelagic seafloors since submarine landslides provide kinematic indicators.