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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Arctic Ocean
-
Alpha Cordillera (2)
-
Amerasia Basin (1)
-
Barents Sea (4)
-
Canada Basin (1)
-
Kara Sea (1)
-
Lomonosov Ridge (1)
-
Mendeleyev Ridge (1)
-
Norwegian Sea
-
Jan Mayen Ridge (1)
-
Kolbeinsey Ridge (2)
-
More Basin (1)
-
Voring Basin (1)
-
-
-
Arctic region
-
Greenland
-
Disko Island (1)
-
East Greenland (199)
-
Greenland ice sheet (3)
-
Jameson Land (22)
-
Kangerlussuaq (13)
-
Milne Land (1)
-
Northern Greenland (11)
-
Peary Land (1)
-
Scoresby Land (1)
-
Scoresby Sund (3)
-
Skaergaard Intrusion (14)
-
South Greenland (2)
-
Uummannaq Greenland (1)
-
West Greenland (2)
-
-
Jan Mayen (2)
-
Russian Arctic
-
Franz Josef Land (2)
-
Novaya Zemlya (1)
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Severnaya Zemlya (1)
-
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Svalbard
-
Spitsbergen
-
Nordaustlandet (2)
-
Spitsbergen Island (1)
-
-
-
-
Asia
-
Krasnoyarsk Russian Federation
-
Severnaya Zemlya (1)
-
Taymyr Dolgan-Nenets Russian Federation
-
Taymyr Peninsula (2)
-
-
-
Siberia (1)
-
West Siberia
-
Severnaya Zemlya (1)
-
-
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Atlantic Ocean
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North Atlantic
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Celtic Sea (1)
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Faeroe-Shetland Basin (5)
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Labrador Sea (1)
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North Sea (5)
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Northwest Atlantic (1)
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Porcupine Basin (1)
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Reykjanes Ridge (1)
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Rockall Plateau (2)
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Rockall Trough (1)
-
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Romanche fracture zone (1)
-
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Atlantic Ocean Islands
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Faeroe Islands (4)
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Shetland Islands (4)
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Atlantic region (4)
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Caledonides (41)
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Canada
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Arctic Archipelago (1)
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Eastern Canada
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Newfoundland and Labrador
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Labrador (1)
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Newfoundland (1)
-
-
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Nunavut
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Ellesmere Island (5)
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Sverdrup Islands
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Axel Heiberg Island (1)
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Queen Elizabeth Islands
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Ellesmere Island (5)
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Sverdrup Islands
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Axel Heiberg Island (1)
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Western Canada
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Alberta (1)
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Northwest Territories (1)
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Yukon Territory (1)
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-
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Commonwealth of Independent States
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Russian Federation
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Arkhangelsk Russian Federation
-
Franz Josef Land (2)
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Novaya Zemlya (1)
-
-
Krasnoyarsk Russian Federation
-
Severnaya Zemlya (1)
-
Taymyr Dolgan-Nenets Russian Federation
-
Taymyr Peninsula (2)
-
-
-
Pechora Basin (1)
-
Polar Urals
-
Pai-Khoi (1)
-
-
Russian Arctic
-
Franz Josef Land (2)
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Novaya Zemlya (1)
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Severnaya Zemlya (1)
-
-
Timan Ridge (1)
-
Timan-Pechora region (1)
-
-
Timan Ridge (1)
-
Urals
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Novaya Zemlya (1)
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Polar Urals
-
Pai-Khoi (1)
-
-
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West Siberia
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Severnaya Zemlya (1)
-
-
-
Denmark Strait (1)
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DSDP Site 504 (1)
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Europe
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Arkhangelsk Russian Federation
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Franz Josef Land (2)
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Novaya Zemlya (1)
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Central Europe
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Germany (1)
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Pechora Basin (1)
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Southern Europe
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Italy
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Basilicata Italy (1)
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Timan Ridge (1)
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Western Europe
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Iceland (2)
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Netherlands (1)
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Scandinavia
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Denmark (2)
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Norway
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Finnmark Norway
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Nordland Norway
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Lofoten Islands (1)
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United Kingdom
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Great Britain
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England
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East Anglia
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Norfolk England (1)
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Hampshire Basin (1)
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London Basin (1)
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Somerset England (2)
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South-West England (1)
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Scotland
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Argyllshire Scotland
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Mull Island (1)
-
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Hebrides
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Inner Hebrides
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Isle of Skye (1)
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Mull Island (1)
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-
Highland region Scotland
-
Inverness-shire Scotland
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Isle of Skye (1)
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Ross-shire Scotland (1)
-
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Moine thrust zone (1)
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Moray Firth (1)
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Orkney Islands (1)
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Shetland Islands (4)
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Indian Ocean Islands
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Seychelles (1)
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North America
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Canadian Shield
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Churchill Province
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Rae Province (1)
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Great Plains (1)
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North Slope (2)
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Orcadian Basin (1)
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Pacific Ocean
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East Pacific
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Northeast Pacific
-
Hess Deep (1)
-
-
-
Equatorial Pacific (2)
-
North Pacific
-
Northeast Pacific
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Hess Deep (1)
-
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Russian Platform
-
Timan Ridge (1)
-
-
United States
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Alaska
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Brooks Range (2)
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Demarcation Point Quadrangle (1)
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Mount Michelson Quadrangle (1)
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California
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San Bernardino County California
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Old Woman Mountains (1)
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Minnesota
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Duluth Complex (1)
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Nebraska
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Scotts Bluff County Nebraska (1)
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New Mexico (1)
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Texas (1)
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Wyoming (1)
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commodities
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metal ores
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base metals (2)
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copper ores (4)
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gold ores (7)
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lead ores (1)
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lead-zinc deposits (1)
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molybdenum ores (3)
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nickel ores (1)
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platinum ores (5)
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tungsten ores (2)
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zinc ores (1)
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mineral deposits, genesis (7)
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mineral exploration (2)
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oil and gas fields (1)
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petroleum
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natural gas (2)
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-
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elements, isotopes
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carbon
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C-13/C-12 (9)
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organic carbon (4)
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chemical ratios (1)
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halogens
-
fluorine (1)
-
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hydrogen
-
D/H (1)
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deuterium (1)
-
-
isotope ratios (16)
-
isotopes
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radioactive isotopes
-
Al-26 (1)
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Be-10 (1)
-
Os-187/Os-186 (1)
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
stable isotopes
-
C-13/C-12 (9)
-
D/H (1)
-
deuterium (1)
-
He-4/He-3 (1)
-
Nd-144/Nd-143 (4)
-
O-18/O-16 (5)
-
Os-187/Os-186 (1)
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
S-34/S-32 (2)
-
Sr-87/Sr-86 (6)
-
-
-
metals
-
alkaline earth metals
-
beryllium
-
Be-10 (1)
-
-
strontium
-
Sr-87/Sr-86 (6)
-
-
-
aluminum
-
Al-26 (1)
-
-
copper (3)
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gold (1)
-
iron (2)
-
lead
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
-
-
platinum group
-
osmium
-
Os-187/Os-186 (1)
-
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palladium (4)
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platinum (1)
-
platinum ores (5)
-
-
precious metals (3)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (4)
-
-
-
-
noble gases
-
argon (1)
-
helium
-
He-4/He-3 (1)
-
-
-
oxygen
-
O-18/O-16 (5)
-
-
phosphorus
-
organic phosphorus (1)
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silicon (1)
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sulfur
-
S-34/S-32 (2)
-
-
-
fossils
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bacteria (1)
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burrows (3)
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Chordata
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Vertebrata
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Pisces
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Chondrichthyes
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Elasmobranchii (1)
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Osteichthyes
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Actinopterygii (1)
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Placodermi
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Arthrodira (1)
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-
-
Tetrapoda
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Amphibia
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Labyrinthodontia
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Temnospondyli (2)
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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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Saurischia
-
Sauropodomorpha (1)
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Theropoda (1)
-
-
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Thecodontia
-
Phytosauria (1)
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-
-
Testudinata (1)
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-
-
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-
coprolites (1)
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cyanobacteria (1)
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Graptolithina (1)
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ichnofossils (6)
-
Invertebrata
-
Arthropoda
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Mandibulata
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Crustacea
-
Ostracoda (1)
-
-
Insecta (1)
-
-
Trilobitomorpha
-
Trilobita (2)
-
-
-
Mollusca
-
Cephalopoda
-
Ammonoidea (3)
-
-
Hyolithes (1)
-
-
Protista
-
Foraminifera (1)
-
-
Vermes
-
Annelida (1)
-
-
-
microfossils
-
Conodonta
-
Hindeodus (2)
-
-
-
palynomorphs
-
acritarchs (3)
-
Dinoflagellata (3)
-
megaspores (1)
-
miospores
-
Classopollis (1)
-
pollen (5)
-
-
-
Plantae
-
algae
-
Chlorophyta
-
Chlorophyceae (1)
-
-
Pyrrhophyta (1)
-
-
Spermatophyta
-
Gymnospermae
-
Bennettitales (2)
-
Ginkgoales (3)
-
-
-
-
problematic fossils (3)
-
thallophytes (2)
-
tracks (2)
-
-
geochronology methods
-
(U-Th)/He (1)
-
Ar/Ar (18)
-
exposure age (1)
-
fission-track dating (3)
-
K/Ar (3)
-
paleomagnetism (4)
-
Rb/Sr (3)
-
Re/Os (2)
-
Sm/Nd (1)
-
thermochronology (1)
-
U/Pb (22)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene (3)
-
Pleistocene
-
lower Pleistocene (2)
-
-
-
Tertiary
-
lower Tertiary (7)
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middle Tertiary (1)
-
Neogene
-
Miocene
-
lower Miocene (1)
-
middle Miocene (2)
-
-
Pliocene
-
upper Pliocene (1)
-
-
-
Paleogene
-
Eocene
-
lower Eocene (2)
-
-
lower Paleogene (2)
-
Oligocene
-
lower Oligocene (1)
-
-
Paleocene
-
lower Paleocene
-
Danian (1)
-
-
middle Paleocene
-
Selandian (1)
-
-
upper Paleocene
-
Thanetian (1)
-
-
-
-
-
-
Dalradian (1)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
-
Upper Cretaceous
-
Cenomanian (1)
-
-
-
Jurassic
-
Lower Jurassic
-
Hettangian (1)
-
lower Liassic (2)
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Sinemurian (1)
-
Triassic-Jurassic boundary (4)
-
-
Middle Jurassic
-
Callovian (1)
-
-
Oxford Clay (1)
-
Upper Jurassic
-
Kimmeridge Clay (1)
-
Oxfordian (3)
-
-
-
Triassic
-
Lower Triassic
-
Permian-Triassic boundary (3)
-
-
Middle Triassic (2)
-
Upper Triassic
-
Norian (1)
-
Rhaetian (3)
-
Triassic-Jurassic boundary (4)
-
-
-
-
Paleozoic
-
Cambrian
-
Lower Cambrian (3)
-
-
Carboniferous
-
Lower Carboniferous
-
Dinantian (2)
-
-
Mississippian
-
Lower Mississippian
-
Tournaisian (2)
-
-
Middle Mississippian
-
Visean (1)
-
-
-
Upper Carboniferous
-
Millstone Grit (1)
-
Westphalian (1)
-
-
-
Devonian
-
Lower Devonian (2)
-
Middle Devonian
-
Eifelian (1)
-
Givetian (1)
-
-
Upper Devonian
-
Famennian (3)
-
-
-
lower Paleozoic (5)
-
Ordovician
-
Lower Ordovician (1)
-
Upper Ordovician (1)
-
-
Permian
-
Guadalupian (1)
-
Lower Permian (1)
-
Upper Permian
-
Permian-Triassic boundary (3)
-
Zechstein (1)
-
-
-
Silurian
-
Lower Silurian
-
Llandovery (1)
-
Wenlock (1)
-
-
Upper Silurian
-
Ludlow (1)
-
Pridoli (1)
-
-
-
upper Paleozoic (2)
-
-
Precambrian
-
Archean
-
Neoarchean (1)
-
-
Lewisian Complex (1)
-
upper Precambrian
-
Proterozoic
-
Mesoproterozoic (3)
-
Neoproterozoic
-
Marinoan (1)
-
Tonian (1)
-
Torridonian (1)
-
-
Paleoproterozoic (4)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
feldspathoid rocks (1)
-
granophyre (2)
-
picrite (4)
-
plutonic rocks
-
appinite (1)
-
diabase
-
tholeiitic dolerite (1)
-
-
diorites
-
quartz diorites (1)
-
tonalite (1)
-
trondhjemite (1)
-
-
gabbros
-
troctolite (1)
-
-
granites
-
I-type granites (1)
-
leucogranite (1)
-
S-type granites (1)
-
-
granodiorites (1)
-
pegmatite (4)
-
syenites
-
nepheline syenite (1)
-
pulaskite (1)
-
-
ultramafics
-
peridotites (1)
-
pyroxenite (1)
-
-
-
volcanic rocks
-
basalts
-
alkali basalts (1)
-
flood basalts (11)
-
mid-ocean ridge basalts (2)
-
olivine tholeiite (1)
-
tholeiite (5)
-
tholeiitic basalt (1)
-
-
melilitite (1)
-
pyroclastics
-
hyaloclastite (1)
-
tuff (2)
-
-
trachyandesites (1)
-
trachytes (1)
-
-
-
wehrlite (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
cataclasites (1)
-
eclogite (4)
-
gneisses
-
augen gneiss (1)
-
granite gneiss (1)
-
orthogneiss (4)
-
paragneiss (1)
-
-
granulites (1)
-
marbles (1)
-
metaigneous rocks
-
metabasalt (2)
-
metabasite (1)
-
metagabbro (1)
-
-
metasedimentary rocks
-
metapelite (1)
-
paragneiss (1)
-
-
metavolcanic rocks (1)
-
migmatites (4)
-
mylonites
-
pseudotachylite (2)
-
ultramylonite (1)
-
-
schists
-
blueschist (1)
-
-
-
turbidite (3)
-
-
minerals
-
alloys (3)
-
halides
-
chlorides
-
eudialyte (1)
-
-
-
minerals (4)
-
native elements (1)
-
oxides
-
baddeleyite (1)
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ilmenite (1)
-
iron oxides (1)
-
limonite (1)
-
magnetite (2)
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rutile (2)
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spinel (1)
-
-
phosphates
-
apatite (4)
-
monazite (1)
-
-
platinum minerals (2)
-
silicates
-
chain silicates
-
amphibole group
-
clinoamphibole
-
actinolite (1)
-
-
-
pyroxene group
-
clinopyroxene
-
omphacite (1)
-
-
-
wollastonite group
-
wollastonite (1)
-
-
-
framework silicates
-
feldspar group
-
plagioclase
-
anorthite (1)
-
-
-
leucite (1)
-
nepheline group
-
nepheline (1)
-
-
silica minerals
-
coesite (1)
-
quartz (2)
-
-
-
orthosilicates
-
nesosilicates
-
garnet group (4)
-
kyanite (1)
-
olivine group
-
olivine (1)
-
-
zircon group
-
zircon (16)
-
-
-
sorosilicates
-
epidote group
-
epidote (1)
-
-
ilvaite (1)
-
-
-
ring silicates
-
eudialyte (1)
-
-
sheet silicates
-
chlorite group
-
chlorite (2)
-
-
clay minerals
-
smectite (2)
-
-
corrensite (1)
-
illite (1)
-
magadiite (1)
-
mica group
-
biotite (3)
-
celadonite (1)
-
muscovite (2)
-
-
-
-
sulfates
-
celestine (1)
-
-
sulfides
-
bornite (3)
-
chalcocite (2)
-
chalcopyrite (2)
-
digenite (1)
-
molybdenite (2)
-
pentlandite (1)
-
-
tungstates
-
scheelite (1)
-
-
wehrlite (1)
-
-
Primary terms
-
absolute age (38)
-
Arctic Ocean
-
Alpha Cordillera (2)
-
Amerasia Basin (1)
-
Barents Sea (4)
-
Canada Basin (1)
-
Kara Sea (1)
-
Lomonosov Ridge (1)
-
Mendeleyev Ridge (1)
-
Norwegian Sea
-
Jan Mayen Ridge (1)
-
Kolbeinsey Ridge (2)
-
More Basin (1)
-
Voring Basin (1)
-
-
-
Arctic region
-
Greenland
-
Disko Island (1)
-
East Greenland (199)
-
Greenland ice sheet (3)
-
Jameson Land (22)
-
Kangerlussuaq (13)
-
Milne Land (1)
-
Northern Greenland (11)
-
Peary Land (1)
-
Scoresby Land (1)
-
Scoresby Sund (3)
-
Skaergaard Intrusion (14)
-
South Greenland (2)
-
Uummannaq Greenland (1)
-
West Greenland (2)
-
-
Jan Mayen (2)
-
Russian Arctic
-
Franz Josef Land (2)
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Novaya Zemlya (1)
-
Severnaya Zemlya (1)
-
-
Svalbard
-
Spitsbergen
-
Nordaustlandet (2)
-
Spitsbergen Island (1)
-
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East Greenland
Long runout distance of a block breccia density flow along a half-graben axis: latest Jurassic rift climax in East Greenland
Enhanced terrestrial nutrient release during the Devonian emergence and expansion of forests: Evidence from lacustrine phosphorus and geochemical records
First evidence for Neoproterozoic rocks offshore South-East Greenland
Transport of mafic magma through the crust and sedimentary basins: Jameson Land, East Greenland
Sedimentology and reservoir architecture of a widespread siliciclastic intra-lava unit, Kangerlussuaq, East Greenland
Rapid cooling during late-stage orogenesis and implications for the collapse of the Scandian retrowedge, northern Scotland
Middle–Late Triassic evolution of the Jameson Land Basin, East Greenland
Constraints from cosmogenic nuclides on the glaciation and erosion history of Dove Bugt, northeast Greenland
The Neoarchean Uyea Gneiss Complex, Shetland: an onshore fragment of the Rae Craton on the European Plate
Tonian and Silurian magmatism in Nordaustlandet: Svalbard’s place in the Caledonian orogen
ABSTRACT The Nordaustlandet terrane of Svalbard plays a critical role in evaluating strike-slip displacements in the Caledonian orogen. Comparison of Silurian and Tonian magmatism in Nordaustlandet, East Greenland, and the Pearya terrane on Ellesmere Island provides a means to evaluate models of large-scale versus minimal displacements. Augen gneiss with an emplacement age of 972 ± 5 Ma demonstrates that the Tonian granite suite is coeval with the calc-alkaline Kap Hansteen volcanic rocks. Zircon from Silurian leucosomes, leucogranites, and granites is dominated by xenocrystic components, making it analytically difficult to isolate magmatic versus inherited age domains. Zircon systematics from a relatively undeformed Silurian granite (431 ± 5 Ma) resemble those of similar granites interpreted to be Tonian in age (e.g., Kontaktberget granite). Assuming less deformed granites of Nordaustlandet are Silurian, synemplacement or syntectonic deformation of Tonian augen gneiss and volcanic rocks is no longer required. Tonian magmatic rocks of Svalbard share a common origin with basement rocks of the Pearya terrane within a continental arc system, but are distinctly older than Tonian igneous and metamorphic rocks of East Greenland. Migmatite complexes and granite intrusions in Nordaustlandet, with ages ranging from 440 to 425 Ma, are coeval with granites in East Greenland that record the combined effects of subduction beneath Laurentia and mid-crustal melting. Migmatites in East Greenland are juxtaposed with low grade rocks by syn-contraction normal faults whereas migmatites show gradational contacts into lower grade rocks on Nordaustlandet. These differences in basement age and structural setting preclude proximity of the Nordaustlandet terrane with East Greenland during the 440–400 Ma continent-continent collision phase (Scandian) of the Caledonian orogen. Similarly, differences in depositional, magmatic, and metamorphic history between the Pearya terrane basement and Nordaustlandet terrane argue against simple offset of crustal fragments. The Pearya and Nordaustlandet terranes likely were not involved in the main phase of crustal thickening directly related to collision of Baltica and Laurentia, but rather resided on a convergent boundary north of the Scandian continent-continent collision zone, consistent with models of Gee and Teben’kov (2004) and Johansson et al. (2005).
The timing of fjord formation and early glaciations in North and Northeast Greenland
Ice-cliff failure via retrogressive slumping
Strontium isotope systematics for plagioclase of the Skaergaard intrusion (East Greenland): A window to crustal assimilation, differentiation, and magma dynamics
New Albian to Cenomanian (Cretaceous) dinoflagellate cyst taxa of ovoidinioid affinities from East Greenland, the Barents Sea and England
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 The margins of the North Atlantic rift are covered by an extensive succession of volcanic rocks, with up to 5 km of continental flood basalts, hyaloclastites and interbedded sedimentary rocks. The volcanic succession deteriorates seismic imaging and has hampered petroleum exploration in these areas. Focused research and pioneering exploration activity, however, has improved the understanding and development of new play models in volcanic-influenced basins. In 2004, the Rosebank discovery finally proved that intra-volcanic siliciclastic sandstones of the Flett Formation may form attractive hydrocarbon reservoirs in the Faroe–Shetland Basin. The Kangerlussuaq Basin in southern East Greenland offers a unique opportunity to study the interaction of siliciclastic sediments with lavas and various volcaniclastic units. It is demonstrated that: (1) laterally extensive siliciclastic sedimentary units are present in the lower part of the volcanic succession; (2) the morphology of the lavas controlled variations in sandstone geometry and thickness; and (3) deposition of the interbedded sediments and lavas occurred in a low-relief environment close to sea level. The mineralogical composition of the intra-volcanic sediments is highly variable, ranging from siliciclastic to purely volcaniclastic. Diagenetic studies suggest that the nature of the volcanic component in volcaniclastic sandstones is more important to reservoir properties than the relative concentration.
Abstract During Late Paleocene–Early Eocene times, the modern Rosebank structure was located at the juxtaposition of the easterly advancing Flett volcanic system and the northerly prograding Flett delta. As a result, the Rosebank reservoir sandstones are interstratified with volcanic and volcaniclastic rocks, offering challenges for reservoir imaging, depth prediction and reservoir characterization. These challenges have driven the application of Ocean Bottom Node (OBN) seismic technology. OBN data have yielded improved velocity models for depth conversion, better reservoir definition and key insights to aid the modelling of sand distribution from seismic attributes. Spectral decomposition of the OBN seismic data has facilitated the extraction of distinct volcanic subunits, whilst spectral enhancement has enabled visualization of complex stacking patterns within individual igneous layers. To complement the seismic analysis, detailed geological analogue studies have been undertaken in volcanic provinces such as the Palaeogene volcanic district of SE Greenland and the Columbia River Flood Basalt Province, USA. No single outcrop provides a definitive analogy to Rosebank, but each offers insights that provide an important link to understanding and managing the main subsurface uncertainties associated with field development. Integration of these multiple workflows have improved the reservoir characterization and provided the foundation for the optimization of the field development plan.