Главная HISTORY OF FORMATION AND OIL AND GAS CONTENT OF BARENTS SEA REGION
History of formation and oil and gas content of Barents Sea region Печать E-mail

MARGULIS L.S., MARGULIS E.A. VNIGRI, Russia

Phanerozoic history of formation of Batemts sea region is intricate and include not less than five cardinal reconstructions of tectonic conditions. At a modem level of knowledge the following structural and historic stages of Barents sea region can be emphasized: lower Paleozoic (pre-middle-upper Devonian), middle Paleozoic (middle-upper Devonian - lower Permian). Paleozoic - early Mesozoic (lower Permian - Triassic), Mesozoic (Jurassic -Cretaceous) and Cenozoic. The lower Paleozoic (pre-middle Devonian) history of region's development is lesser studied, there are numerous contradictory ideas /1, 4, 6/. However, apparently, during the Silurian - early Devonian Barents sea region was a part of vast passive margin of Euro-American continent, on which terrigenous-carbonaceous plate complex was been accumulated. Its thickness is increased up to 1-2 km toward pericratonic submersion by east and north-east. An accretion, folding and orogeny of Scandinavian active margin took place during the Silurian - middle Devonian. The zone of joint of Baikalian and Caledonian geoblocks is traced under sedimentary cover from the peninsula Varanger to northern end of Novaya Zemlia. To middle Devonian - the beginning of late Devonian Barents sea region already represented a part of new continent. Its further development till the Triassic was determined by evolution of the Ural ocean and origin of orogen


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