Океанологические и биологические исследования арктических и южных морей России : к 70-летию Мурманского морского биологического института / Рос. акад. наук, Кол. науч. центр, Мурм. мор. биол. ин-т ; [редкол.: Г. Г. Матишов (отв. ред.) и др.]. - Апатиты : КНЦ РАН, 2006.

Океанологические и биологические исследования арктических и южных морей России UDC 551.242.2 (268) Shipilov Е.Ѵ. Tectonic-geodynamic evolution of the Arctic continental margins during the epoch of the decay of Vegener Pangea and young ocean formation // Oceanological and biological investigations of the Russia Arctic and Southern Seas (to the 70 anniversary of the Murmansk Marine Biological Institute). - Apatity: Publ. KSC RAS, 2006. - P. 102-145. Based on the complex study and interpretation of marine geological and geophisi- cal data, the main structural features of the Barents-Kara and other continental margins are considered in the context of reconstractions of the tectono-geodynamic environments that existed during breakdown of the last Pangea and resulted in the formation of young oceanic basins in the Arctic. Attention is focused on three principial stages of the regional evolution. In the Late Paleozoic-Early Mesozoic, the Artie peryphery of the North Eurasia was affected by opposite tectono-geodynamic processes. The constructive (accretionary) regime was related to the collision or to is final phases responsible for the North Eurasia formation, while the destructive regime was characterizedby the large-scale rifting induced by the north Asian superplume activity. It cannot be ruled out that the Barents margin was influenced by one of the Paleopacific offsets. The anomalous appearens of the East Barents basin with its avalanche, although starved accumulation of the extremely thic sedimentary fill, the reduced Earth’s crust, and basaltic magmatism was a conse quence of interference of the above regimes. In general, the stable regime of the margine evolution gave way to the mobile regime with overal transition from carbonate to terri genous sedimentation and with further stepwise intensification of lithosphere destrution eventually giving rise to the opening of oceanic basins in the Mesozoic and Cenozoic. The Jurassic-Cretaceous stage of oceanic basin formation determinated the opening of the Arctic largest Amerasia Basin reflected in the tectono-geodynamic and facies rearrange ments at the Barents Sea margin. The destructive, faulted propagation of the axial spreading zone frome the Amerasia Basin to the continental margin was related to the system of SW-NE-trending deep riftogenic troughs directed toward the opening North Atlantic. The Late Cretaceous-Cenozoic stage was characterized by the formation of the Norwegian-Greenland and Eurasian basin and development of the Arctic continental margins. The opening of young oceanic basins was accompanied by detachment of conti nental crustal blocks (microcontinents) from the margins, by shifts or jumps of oceanic spreading centers along the barriertype transform zones at the continent-ocean boundary, by continental margin stretching (rifting) of the Earth,s crust, plateu-basalt magmatism, and by some other tectono-geodynamic phenomena relevant to the ocean formation. 111. - 14, references - 94. UDC 551.35 (262.56) Polshin V. V. Bottom sediments of the Azov Sea // Oceanological and biological investigations of the Russia Arctic and Southern Seas (to the 70th anniversary of the Murmansk Marine Biological Institute). - Apatity: Publ. KSC RAS, 2006. - P. 146-155. The history of bottom sediments investigation for the 100 years period of time is presented in the article. A short characteristic of sediments and their lithological types is given. The major sources of the sedimentary material input on the Azov Sea area with quantitative indices of each source are pointed out. The substance composition of sedi ments and their terrigenous and biogene components are characterized. Zones enduring maximal anthropogenic impact are revealed. 111. - 2, references - 9. 473