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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Arctic Ocean
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Alpha Cordillera (1)
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Amerasia Basin (2)
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Barents Sea
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Pechora Sea (1)
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Canada Basin (1)
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Chukchi Sea (1)
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East Siberian Sea (1)
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Eurasia Basin (1)
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Kara Sea (20)
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Laptev Sea (2)
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Arctic region
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Arctic Coastal Plain (1)
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Greenland
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East Greenland (1)
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Northern Greenland (1)
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Russian Arctic
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Franz Josef Land (1)
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Novaya Zemlya (4)
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Svalbard (1)
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Asia
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Central Asia
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Aral Sea (1)
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Chukotka Russian Federation (1)
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Far East
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Mongolia (1)
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Krasnoyarsk Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
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Taymyr Peninsula (1)
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-
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Ob River (1)
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Siberia (2)
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Tyumen Russian Federation
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Yamal-Nenets Russian Federation
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Yamal (1)
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-
-
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Baffin Bay (1)
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Barents region (1)
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Bering Strait (1)
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Canada
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Arctic Archipelago (1)
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Nunavut
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Ellesmere Island (2)
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Queen Elizabeth Islands
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Ellesmere Island (2)
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-
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Commonwealth of Independent States
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Aral Sea (1)
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Dnieper-Donets Basin (1)
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Russian Federation
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Arkhangelsk Russian Federation
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Franz Josef Land (1)
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Novaya Zemlya (4)
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-
Chukotka Russian Federation (1)
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Komi Russian Federation
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Vorkuta Russian Federation (1)
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Krasnoyarsk Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
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Taymyr Peninsula (1)
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-
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Ob River (1)
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Pechora Basin (1)
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Polar Urals
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Pai-Khoi (1)
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Russian Arctic
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Franz Josef Land (1)
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Novaya Zemlya (4)
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Timan Ridge (1)
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Timan-Pechora region (3)
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Tyumen Russian Federation
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Yamal-Nenets Russian Federation
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Yamal (1)
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-
-
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Timan Ridge (1)
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Urals
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Novaya Zemlya (4)
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Polar Urals
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Pai-Khoi (1)
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-
-
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Eurasia (1)
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Europe
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Arkhangelsk Russian Federation
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Franz Josef Land (1)
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Novaya Zemlya (4)
-
-
Dnieper-Donets Basin (1)
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Komi Russian Federation
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Vorkuta Russian Federation (1)
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Pechora Basin (1)
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Timan Ridge (1)
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Timan-Pechora region (3)
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Western Europe
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Scandinavia
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Norway
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Finnmark Norway
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Varanger Peninsula (1)
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-
-
-
-
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Mediterranean Sea
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East Mediterranean
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Black Sea (1)
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-
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North America
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North American Craton (1)
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Pacific Ocean
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North Pacific
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Bering Sea (1)
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-
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Russian Platform
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Dnieper-Donets Basin (1)
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Timan Ridge (1)
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United States
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Alaska (1)
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Washington (1)
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-
USSR (2)
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commodities
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petroleum (1)
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elements, isotopes
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carbon
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C-13/C-12 (1)
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C-14 (3)
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organic carbon (1)
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isotope ratios (1)
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isotopes
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radioactive isotopes
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C-14 (3)
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stable isotopes
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C-13/C-12 (1)
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fossils
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Invertebrata
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Protista
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Foraminifera
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Allogromiina (1)
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Tintinnidae (1)
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-
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microfossils (3)
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geochronology methods
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Ar/Ar (1)
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K/Ar (1)
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geologic age
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Cenozoic
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Quaternary
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Holocene (2)
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Pleistocene
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upper Pleistocene
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Weichselian
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upper Weichselian (1)
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-
-
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upper Quaternary (2)
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Tertiary
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lower Tertiary (1)
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Paleogene (1)
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-
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Mesozoic
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Cretaceous
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Upper Cretaceous (1)
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-
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Paleozoic
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Carboniferous (2)
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Devonian (1)
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Ordovician (1)
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Permian
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Lower Permian (1)
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-
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Phanerozoic (1)
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Precambrian
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Archean (1)
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upper Precambrian
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Proterozoic (1)
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-
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igneous rocks
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igneous rocks
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volcanic rocks
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glasses (1)
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-
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Primary terms
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absolute age (4)
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Arctic Ocean
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Alpha Cordillera (1)
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Amerasia Basin (2)
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Barents Sea
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Pechora Sea (1)
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Canada Basin (1)
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Chukchi Sea (1)
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East Siberian Sea (1)
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Eurasia Basin (1)
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Kara Sea (20)
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Laptev Sea (2)
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Arctic region
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Arctic Coastal Plain (1)
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Greenland
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East Greenland (1)
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Northern Greenland (1)
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Russian Arctic
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Franz Josef Land (1)
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Novaya Zemlya (4)
-
-
Svalbard (1)
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-
Asia
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Central Asia
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Aral Sea (1)
-
-
Chukotka Russian Federation (1)
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Far East
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Mongolia (1)
-
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Krasnoyarsk Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
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Taymyr Peninsula (1)
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-
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Ob River (1)
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Siberia (2)
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Tyumen Russian Federation
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Yamal-Nenets Russian Federation
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Yamal (1)
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-
-
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Canada
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Arctic Archipelago (1)
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Nunavut
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Ellesmere Island (2)
-
-
Queen Elizabeth Islands
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Ellesmere Island (2)
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-
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carbon
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C-13/C-12 (1)
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C-14 (3)
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organic carbon (1)
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Cenozoic
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Quaternary
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Holocene (2)
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Pleistocene
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upper Pleistocene
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Weichselian
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upper Weichselian (1)
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-
-
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upper Quaternary (2)
-
-
Tertiary
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lower Tertiary (1)
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Paleogene (1)
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-
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continental shelf (1)
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crust (3)
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data processing (1)
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earthquakes (2)
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ecology (2)
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economic geology (1)
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Eurasia (1)
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Europe
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Arkhangelsk Russian Federation
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Franz Josef Land (1)
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Novaya Zemlya (4)
-
-
Dnieper-Donets Basin (1)
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Komi Russian Federation
-
Vorkuta Russian Federation (1)
-
-
Pechora Basin (1)
-
Timan Ridge (1)
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Timan-Pechora region (3)
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Western Europe
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Scandinavia
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Norway
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Finnmark Norway
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Varanger Peninsula (1)
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-
-
-
-
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explosions (1)
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faults (1)
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geochronology (1)
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geology (1)
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geomorphology (1)
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geophysical methods (3)
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geophysics (1)
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glacial geology (3)
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government agencies (1)
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heat flow (1)
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hydrology (2)
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igneous rocks
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volcanic rocks
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glasses (1)
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-
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Invertebrata
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Protista
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Foraminifera
-
Allogromiina (1)
-
-
Tintinnidae (1)
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-
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isotopes
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radioactive isotopes
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C-14 (3)
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-
stable isotopes
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C-13/C-12 (1)
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-
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mantle (2)
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marine geology (2)
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Mediterranean Sea
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East Mediterranean
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Black Sea (1)
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-
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Mesozoic
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Cretaceous
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Upper Cretaceous (1)
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-
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North America
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North American Craton (1)
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ocean circulation (1)
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orogeny (1)
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Pacific Ocean
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North Pacific
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Bering Sea (1)
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-
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paleoclimatology (1)
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paleoecology (1)
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paleogeography (1)
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paleontology (2)
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Paleozoic
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Carboniferous (2)
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Devonian (1)
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Ordovician (1)
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Permian
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Lower Permian (1)
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-
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petroleum (1)
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petrology (2)
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Phanerozoic (1)
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plate tectonics (3)
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Precambrian
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Archean (1)
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upper Precambrian
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Proterozoic (1)
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-
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remote sensing (1)
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sea-level changes (2)
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sedimentary rocks
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clastic rocks
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shale (1)
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-
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sedimentation (2)
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sediments
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clastic sediments
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diamicton (2)
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erratics (1)
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marine sediments (3)
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peat (1)
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seismology (1)
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stratigraphy (1)
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tectonics (2)
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United States
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Alaska (1)
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Washington (1)
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USSR (2)
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rock formations
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Siberian Traps (2)
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sedimentary rocks
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sedimentary rocks
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clastic rocks
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shale (1)
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sedimentary structures
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channels (1)
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-
sediments
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sediments
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clastic sediments
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diamicton (2)
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erratics (1)
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marine sediments (3)
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peat (1)
-
-
Kara Sea
Tectonic implications of the lithospheric structure across the Barents and Kara shelves
Abstract This paper considers the lithospheric structure and evolution of the wider Barents–Kara Sea region based on the compilation and integration of geophysical and geological data. Regional transects are constructed at both crustal and lithospheric scales based on the available data and a regional three-dimensional model. The transects, which extend onshore and into the deep oceanic basins, are used to link deep and shallow structures and processes, as well as to link offshore and onshore areas. The study area has been affected by numerous orogenic events in the Precambrian–Cambrian (Timanian), Silurian–Devonian (Caledonian), latest Devonian–earliest Carboniferous (Ellesmerian–svalbardian), Carboniferous–Permian (Uralian), Late Triassic (Taimyr, Pai Khoi and Novaya Zemlya) and Palaeogene (Spitsbergen–Eurekan). It has also been affected by at least three episodes of regional-scale magmatism, the so-called large igneous provinces: the Siberian Traps (Permian–Triassic transition), the High Arctic Large Igneous Province (Early Cretaceous) and the North Atlantic (Paleocene–Eocene transition). Additional magmatic events occurred in parts of the study area in Devonian and Late Cretaceous times. Within this geological framework, we integrate basin development with regional tectonic events and summarize the stages in basin evolution. We further discuss the timing, causes and implications of basin evolution. Fault activity is related to regional stress regimes and the reactivation of pre-existing basement structures. Regional uplift/subsidence events are discussed in a source-to-sink context and are related to their regional tectonic and palaeogeographical settings.
Abstract This book is the final product of the Circum-Arctic Lithosphere Evolution (CALE) project. The project’s ultimate goal is to link the onshore and offshore geology in order to develop a self-consistent set of constraints for the opening of the Amerasia Basin. The circum-Arctic is divided into seven regions, each with its own research team; the teams included geophysicists and geologists working together to integrate geological and geophysical data, from onshore to offshore. This work is summarized in the 18 papers contained in this volume.
Seismic tomography of the Arctic region: inferences for the thermal structure and evolution of the lithosphere
Abstract Waveform tomography with very large datasets reveals the upper-mantle structure of the Arctic in unprecedented detail. Using tomography jointly with computational petrology, we estimate temperature in the lithosphere–asthenosphere depth range and infer lithospheric structure and evolution. Most of the boundaries of the mantle roots of cratons in the Arctic are coincident with their geological boundaries at the surface. The thick lithospheres of the Greenland and North American cratons are separated by a corridor of thin lithosphere beneath Baffin Bay and through the middle of the Canadian Arctic Archipelago; the southern archipelago is part of the North American Craton. The mantle root of the cratonic block beneath northern Greenland may extend westwards as far as central Ellesmere Island. The Barents and Kara seas show high velocities indicative of thick lithosphere, similar to cratons. The locations of intraplate basaltic volcanism attributed to the High Arctic Large Igneous Province are all on thin, non-cratonic lithosphere. The lithosphere beneath the central part of the Siberian Traps is warmer than elsewhere beneath the Siberian Craton. This observation is consistent with lithospheric erosion associated with the large igneous province volcanism. A corridor of relatively low seismic velocities cuts east–west across central Greenland. This indicates lithospheric thinning, which appears to delineate the track of the Iceland hotspot. Supplementary material: Figures with comparisons of different tomographic models at 50 and 200 km depths are available at https://doi.org/10.6084/m9.figshare.c.3817810