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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Alexander Terrane (1)
-
Arctic Ocean
-
Amerasia Basin (4)
-
Barents Sea (2)
-
Canada Basin (3)
-
Chukchi Sea (1)
-
East Siberian Sea (1)
-
Lomonosov Ridge (1)
-
Mendeleyev Ridge (1)
-
-
Arctic region
-
Russian Arctic
-
Novaya Zemlya (1)
-
Wrangel Island (1)
-
-
-
Asia
-
Altai Mountains
-
Gorny Altai (1)
-
Kuznetsk Alatau (1)
-
Mongolian Altai (1)
-
-
Altai Russian Federation
-
Gorny Altai (1)
-
-
Amur region (1)
-
Amur River (1)
-
Anadyr Basin (2)
-
Central Asia
-
Kazakhstan (2)
-
-
Chukotka Russian Federation
-
Anadyr Range (1)
-
Chukchi Peninsula (46)
-
-
Far East
-
China
-
Tancheng-Lujiang Fault (1)
-
-
Mongolia
-
Mongolian Altai (1)
-
-
-
Kamchatka Russian Federation
-
Kamchatka Peninsula (5)
-
-
Khabarovsk Russian Federation (1)
-
Kolyma River (1)
-
Kolyma Uplift (3)
-
Koryak Range (5)
-
Krasnoyarsk Russian Federation
-
Taymyr Dolgan-Nenets Russian Federation
-
Taymyr Peninsula (1)
-
-
-
Kyrgyzstan (1)
-
Lena River (1)
-
Magadan Russian Federation (2)
-
Okhotsk region (2)
-
Okhotsk-Chukchi volcanic belt (7)
-
Omolon Block (2)
-
Russian Far East (13)
-
Russian Pacific region (6)
-
Sakhalin Russian Federation
-
Sakhalin (1)
-
-
Siberia (3)
-
Siberian Platform
-
Yakutia region (1)
-
-
Sikhote-Alin Range (1)
-
Tien Shan (1)
-
Transbaikalia (3)
-
Verkhoyansk region (1)
-
West Siberia
-
Kuznetsk Alatau (1)
-
-
Wrangel Island (1)
-
Yakutia Russian Federation
-
Aldan River (1)
-
Indigirka River (1)
-
Kular Range (1)
-
Verkhoyansk Range (4)
-
-
Yana River (1)
-
Zabaykalskiy Russian Federation
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Chita Russian Federation (1)
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-
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Bering Strait (1)
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Caledonides (1)
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Canada
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Western Canada
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Canadian Cordillera (1)
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Commonwealth of Independent States
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Armenia (1)
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Kazakhstan (2)
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Kyrgyzstan (1)
-
Russian Federation
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Altai Russian Federation
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Gorny Altai (1)
-
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Amur region (1)
-
Anadyr Basin (2)
-
Arkhangelsk Russian Federation
-
Novaya Zemlya (1)
-
-
Chukotka Russian Federation
-
Anadyr Range (1)
-
Chukchi Peninsula (46)
-
-
Kamchatka Russian Federation
-
Kamchatka Peninsula (5)
-
-
Khabarovsk Russian Federation (1)
-
Kolyma River (1)
-
Kolyma Uplift (3)
-
Koryak Range (5)
-
Krasnoyarsk Russian Federation
-
Taymyr Dolgan-Nenets Russian Federation
-
Taymyr Peninsula (1)
-
-
-
Kuznetsk Alatau (1)
-
Lena River (1)
-
Magadan Russian Federation (2)
-
Okhotsk region (2)
-
Okhotsk-Chukchi volcanic belt (7)
-
Omolon Block (2)
-
Russian Arctic
-
Novaya Zemlya (1)
-
Wrangel Island (1)
-
-
Russian Far East (13)
-
Russian Pacific region (6)
-
Sakhalin Russian Federation
-
Sakhalin (1)
-
-
Siberian Platform
-
Yakutia region (1)
-
-
Sikhote-Alin Range (1)
-
Transbaikalia (3)
-
Verkhoyansk region (1)
-
Yakutia Russian Federation
-
Aldan River (1)
-
Indigirka River (1)
-
Kular Range (1)
-
Verkhoyansk Range (4)
-
-
Yana River (1)
-
Zabaykalskiy Russian Federation
-
Chita Russian Federation (1)
-
-
-
Urals
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Novaya Zemlya (1)
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West Siberia
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Kuznetsk Alatau (1)
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Eurasia (2)
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Europe
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Arkhangelsk Russian Federation
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Novaya Zemlya (1)
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Armenia (1)
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Central Europe
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Bohemian Massif (1)
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Erzgebirge (1)
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Fennoscandian Shield (1)
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North America
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North American Cordillera
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Canadian Cordillera (1)
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North Slope (1)
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Pacific Ocean
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North Pacific
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Bering Sea (2)
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Pacific region
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Circum-Pacific region (2)
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Sierra Nevada (1)
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United States
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Alaska
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Klamath Mountains (1)
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USSR (2)
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commodities
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metal ores
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elements, isotopes
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chlorine
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fluorine (1)
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isotope ratios (6)
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isotopes
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Ar-40/Ar-39 (1)
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stable isotopes
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Ar-40/Ar-39 (1)
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He-4/He-3 (1)
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O-18/O-16 (1)
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metals
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cesium (1)
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potassium (1)
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rubidium (1)
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alkaline earth metals
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magnesium (1)
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strontium
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Sr-87 (1)
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Sr-87/Sr-86 (3)
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aluminum (2)
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antimony (1)
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copper (3)
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gold (4)
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iron
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ferric iron (1)
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lead (1)
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platinum group
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platinum ores (1)
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precious metals (1)
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rare earths
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neodymium
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Nd-144/Nd-143 (2)
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silver (2)
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tin (2)
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zinc (1)
-
-
noble gases
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argon
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Ar-40/Ar-39 (1)
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helium
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He-4/He-3 (1)
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-
-
oxygen
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O-18/O-16 (1)
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selenium (1)
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sulfur (2)
-
-
fossils
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Invertebrata
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Arthropoda
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Trilobita (1)
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Brachiopoda (1)
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Protista
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Foraminifera (1)
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microfossils (1)
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palynomorphs (1)
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Plantae
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geochronology methods
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Ar/Ar (3)
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U/Pb (11)
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geologic age
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Cenozoic
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Tertiary
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Mesozoic
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Cretaceous
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Middle Cretaceous (1)
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Jurassic
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lower Mesozoic (1)
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upper Mesozoic (2)
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Paleozoic
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Cambrian (3)
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upper Paleozoic (3)
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Precambrian
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-
upper Precambrian
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Proterozoic
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Neoproterozoic (5)
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Paleoproterozoic (1)
-
-
-
-
-
igneous rocks
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igneous rocks
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diorites (2)
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leucogranite (2)
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granodiorites (2)
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monzodiorite (1)
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pegmatite (1)
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syenites
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granosyenite (1)
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rhyodacites (1)
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trachyandesites (1)
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metamorphic rocks
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metamorphic rocks
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metaigneous rocks (2)
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turbidite (1)
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meteorites
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meteorites (1)
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minerals
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alloys (3)
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arsenides
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oxides
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corundum (1)
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spinel (1)
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selenides (3)
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silicates
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chain silicates
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pyroxene group
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clinopyroxene
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diopside (1)
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framework silicates
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feldspar group
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alkali feldspar
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adularia (2)
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sanidine (1)
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nepheline group
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nepheline (1)
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silica minerals
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quartz (2)
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stishovite (2)
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sodalite group
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sodalite (1)
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orthosilicates
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nesosilicates
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olivine group
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forsterite (1)
-
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zircon group
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zircon (10)
-
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ring silicates
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tourmaline group
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foitite (1)
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schorl (1)
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sheet silicates
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mica group
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biotite (1)
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sulfates
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jarosite (1)
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sulfides
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marcasite (1)
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pyrite (1)
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sphalerite (2)
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sulfosalts
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sulfarsenites
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pearceite (1)
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tellurates (1)
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tellurides (1)
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Primary terms
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absolute age (14)
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Arctic Ocean
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Amerasia Basin (4)
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Barents Sea (2)
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Canada Basin (3)
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Chukchi Sea (1)
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East Siberian Sea (1)
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Lomonosov Ridge (1)
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Mendeleyev Ridge (1)
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Arctic region
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Russian Arctic
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Wrangel Island (1)
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Asia
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Altai Mountains
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Gorny Altai (1)
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Kuznetsk Alatau (1)
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Mongolian Altai (1)
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Altai Russian Federation
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Gorny Altai (1)
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Amur region (1)
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Amur River (1)
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Anadyr Basin (2)
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Central Asia
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Kazakhstan (2)
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Chukotka Russian Federation
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Anadyr Range (1)
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Chukchi Peninsula (46)
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Far East
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China
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Tancheng-Lujiang Fault (1)
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Mongolia
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Kamchatka Russian Federation
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Kamchatka Peninsula (5)
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Khabarovsk Russian Federation (1)
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Kolyma River (1)
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Kolyma Uplift (3)
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Koryak Range (5)
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Krasnoyarsk Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
-
Taymyr Peninsula (1)
-
-
-
Kyrgyzstan (1)
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Lena River (1)
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Magadan Russian Federation (2)
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Okhotsk region (2)
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Okhotsk-Chukchi volcanic belt (7)
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Omolon Block (2)
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Russian Far East (13)
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Russian Pacific region (6)
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Sakhalin Russian Federation
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Sakhalin (1)
-
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Siberia (3)
-
Siberian Platform
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Yakutia region (1)
-
-
Sikhote-Alin Range (1)
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Tien Shan (1)
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Transbaikalia (3)
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Verkhoyansk region (1)
-
West Siberia
-
Kuznetsk Alatau (1)
-
-
Wrangel Island (1)
-
Yakutia Russian Federation
-
Aldan River (1)
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Indigirka River (1)
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Kular Range (1)
-
Verkhoyansk Range (4)
-
-
Yana River (1)
-
Zabaykalskiy Russian Federation
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Chita Russian Federation (1)
-
-
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Canada
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Western Canada
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Canadian Cordillera (1)
-
-
-
catalogs (1)
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Cenozoic
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Quaternary
-
Pleistocene (1)
-
-
Tertiary
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Neogene
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Pliocene (2)
-
-
Paleogene
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Eocene (1)
-
-
-
-
continental drift (3)
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continental shelf (1)
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crust (1)
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crystal chemistry (4)
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crystal structure (3)
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deformation (2)
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earthquakes (2)
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Eurasia (2)
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Europe
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Arkhangelsk Russian Federation
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Novaya Zemlya (1)
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Armenia (1)
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Bohemian Massif (1)
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Fennoscandian Shield (1)
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explosions (1)
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faults (7)
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folds (2)
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geochemistry (4)
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geophysical methods (3)
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glacial geology (1)
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ground water (1)
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heat flow (1)
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heavy mineral deposits (1)
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igneous rocks
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plutonic rocks
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diabase
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tholeiitic dolerite (1)
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diorites (2)
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gabbros (1)
-
granites
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granite porphyry (1)
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granosyenite (1)
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leucogranite (2)
-
-
granodiorites (2)
-
monzodiorite (1)
-
monzonites (3)
-
pegmatite (1)
-
syenites
-
granosyenite (1)
-
-
ultramafics (1)
-
-
volcanic rocks
-
andesites (3)
-
basalts (3)
-
basanite (1)
-
latite (1)
-
nephelinite (1)
-
pyroclastics
-
ignimbrite (1)
-
tuff (1)
-
-
rhyodacites (1)
-
rhyolites (2)
-
trachyandesites (1)
-
-
-
inclusions
-
fluid inclusions (3)
-
-
intrusions (5)
-
Invertebrata
-
Arthropoda
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Trilobitomorpha
-
Trilobita (1)
-
-
-
Brachiopoda (1)
-
Bryozoa (1)
-
Mollusca (1)
-
Protista
-
Foraminifera (1)
-
-
-
isotopes
-
radioactive isotopes
-
Ar-40/Ar-39 (1)
-
Cl-36 (1)
-
-
stable isotopes
-
Ar-40/Ar-39 (1)
-
He-4/He-3 (1)
-
Nd-144/Nd-143 (2)
-
O-18/O-16 (1)
-
Sr-87 (1)
-
Sr-87/Sr-86 (3)
-
-
-
magmas (3)
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mantle (4)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
-
Middle Cretaceous (1)
-
Upper Cretaceous
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Cenomanian (1)
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Coniacian (1)
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Maestrichtian (1)
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Senonian (1)
-
-
-
Jurassic
-
Middle Jurassic (1)
-
Upper Jurassic (3)
-
-
lower Mesozoic (1)
-
Triassic
-
Middle Triassic (1)
-
Upper Triassic (1)
-
-
upper Mesozoic (2)
-
-
metal ores
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copper ores (2)
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gold ores (9)
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molybdenum ores (2)
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niobium ores (1)
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platinum ores (1)
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silver ores (5)
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tin ores (6)
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tungsten ores (3)
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metals
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alkali metals
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cesium (1)
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potassium (1)
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rubidium (1)
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alkaline earth metals
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magnesium (1)
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strontium
-
Sr-87 (1)
-
Sr-87/Sr-86 (3)
-
-
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aluminum (2)
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antimony (1)
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copper (3)
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gold (4)
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iron
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ferric iron (1)
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lead (1)
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platinum group
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platinum ores (1)
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precious metals (1)
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rare earths
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neodymium
-
Nd-144/Nd-143 (2)
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-
-
silver (2)
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tin (2)
-
zinc (1)
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metamorphic rocks
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amphibolites (1)
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gneisses
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granite gneiss (1)
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orthogneiss (2)
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metaigneous rocks (2)
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metasomatic rocks
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metamorphism (2)
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metasomatism (4)
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meteorites (1)
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mineral deposits, genesis (8)
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mineral exploration (4)
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noble gases
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argon
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Ar-40/Ar-39 (1)
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helium
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He-4/He-3 (1)
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North America
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North American Cordillera
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orogeny (2)
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oxygen
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O-18/O-16 (1)
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Pacific Ocean
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North Pacific
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Bering Sea (2)
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Pacific region
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Circum-Pacific region (2)
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paleoclimatology (1)
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paleogeography (10)
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Paleozoic
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Cambrian (3)
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Carboniferous
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Devonian
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middle Paleozoic (1)
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Silurian (2)
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upper Paleozoic (3)
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Chukchi Peninsula
Heat Flow in the Northeastern Continental Margin of Russia
Late Mesozoic–Cenozoic Tectonics and Geodynamics of the East Arctic Region
Epithermal Au–Ag–Se–Te Deposits of the Chukchi Peninsula (Arctic Zone of Russia): Metallogeny, Mineral Assemblages, and Fluid Regime
Mineral Composition and Physicochemical Conditions of Formation of the Pepenveem Epithermal Au–Ag Deposit (Chukchi Peninsula)
Position of the Siberian Platform and Adjacent Cratonic Terranes in the Paleozoic from Paleontological and Geological Evidence
Physicochemical Conditions of Formation of Gold and Silver Parageneses at the Valunistoe Deposit (Chukchi Peninsula)
Middle–Late Paleozoic geodynamic complexes and structure of Gorny Altai and their record in gravity data
Basaltic magmatism and strike-slip tectonics in the Arctic margin of Eurasia: evidence for the early stage of geodynamic evolution of the Amerasia Basin
Mesozoic orogens of the Arctic from Novaya Zemlya to Alaska
Late Triassic siliceous-volcano-terrigenous deposits of the Chukchi Peninsula: composition of igneous rocks, U–Pb age of zircons, and geodynamic interpretations
Raisaite, CuMg[Te 6+ O 4 (OH) 2 ] · 6H 2 O, a new mineral from Chukotka, Russia
The distribution and tectonic settings of structurally complex domains of generally folded and thrust-faulted, commonly allochthonous, rock assemblages, recognized in the very large (250,000 km 2 ) Koryak Upland and Chukotka regions, support the conclusion that Late Jurassic, Early Cretaceous, and Late Cretaceous shortening and, at times, accretion resulted in incorporation of the terranes into a structural collage at the northeastern Asian continental margin. The main stages of accretion and continental growth took place in the late Mesozoic during the Middle–Late Jurassic, at the Early-Late Cretaceous boundary, and in late Maastrichtian time. The Late Jurassic was the emergence time of the Oloi and Uda-Murgal volcanic belts, extending along the convergent boundaries between Siberia and the proto-Arctic and Pacific Oceans, respectively. Convergence persisted until the end of the Early Cretaceous. In Chukotka, convergence ended with collision of the Chukotka microcontinent with the active margin of Siberia that hosted the Oloi volcanic belt. During this collision, the southern passive margin of Chukotka was overthrust by tectonic nappes composed of tectono-stratigraphic units of the South Anyui terrane. Greenschists with ages of 115–119 Ma are related to accretion of oceanic- and island-arc terranes incorporated into the frontal zone of the Uda-Murgal island-arc system. The subsequent growth of the continental margin resulted from accretion of terranes of the North Koryak fold belt in the late Maastrichtian.
Tectonic evolution of the Mesozoic South Anyui suture zone, eastern Russia: A critical component of paleogeographic reconstructions of the Arctic region
First bedrock samples dredged from submarine outcrops in the Chukchi Borderland, Arctic Ocean
Geochronology and structural setting of Latest Devonian – Early Carboniferous magmatic rocks, Cape Kiber, northeast Russia
The Arctic Alaska–Chukotka terrane is a microcontinent with an origin exotic to Laurentia. We used a sensitive high-resolution ion microprobe (SHRIMP) to date nine samples of Neoproterozoic rock and five samples of Devonian rock from the Brooks Range and Seward Peninsula of Alaska and from the Chukotka Peninsula of northeastern Russia. Felsic magmatism occurred at 968 Ma and 742 Ma in the Brooks Range and at 865 Ma and 670–666 Ma on Seward Peninsula. Felsic igneous rocks in Chukotka were dated at 656 Ma and 574 Ma. Devonian igneous rocks are found throughout the Arctic Alaska–Chukotka terrane, and we dated samples with ages of 391 Ma, 390 Ma, 385 Ma, 371 Ma, and 363 Ma. The felsic character of the Neoproterozoic rocks suggests formation at least in part through crustal melting. The age of the crustal source rocks that melted to form the Neoproterozoic rocks is inferred to be Mesoproterozoic based on Nd model ages ranging from 1.6 to 1.4 Ga. Rocks of this age range have been reported from the basement of Baltica but are rare in Laurentia. The 565 Ma orthogneisses on Seward Peninsula have ca. 1.1 Ga Nd model ages. Devonian igneous rocks have a wide range of model ages ranging from 1.6 to 0.8 Ga. The tectonic setting of the 968 Ma, 865 Ma, and 742 Ma rocks is unknown. The ca. 670 Ma magmatism on Seward Peninsula is interpreted to have occurred in an arc setting based on geochemistry and similarities in their ages to the Avalonian–Cadomian arc system peripheral to Gondwana. Latest Neoproterozoic magmatism is inferred to have occurred in a rift setting based on composition and the Paleozoic passive margin sequence that was deposited across the Arctic Alaska–Chukokta terrane. Devonian magmatism likely occurred in an arc and/or backarc rift setting. Significant uncertainties remain concerning the age of the Arctic Alaska–Chukotka terrane basement, particularly the age of the host rocks for Neoproterozoic intrusions.