Sergo Ordzhonikidze Russian State University for Geological Prospecting, Moscow, Russia¹ ; ASAP Service LLC, Gelendzhik, Russia²
E. A. Lavrenova, Associate Professor¹, CEO², Candidate of Geological and Mineralogical Sciences

Sergo Ordzhonikidze Russian State University for Geological Prospecting, Moscow, Russia
V. Yu. Kerimov, Head of Department, Doctor of Geological and Mineralogical Sciences, Professor, vagif.kerimov@mail.ru
A. A. Gorbunov, Senior Researcher

The shelf and suboceanic structures of the modern geology in the Arctic Ocean are the result of a single initiation and development process. Based on the integrated interpretation of retrospective and recent geological and geophysical data, the geodynamic conditions of the sedimentary mantle formation on the shelves of the Eastern Arctic Seas are studied. As follows from the research, the most part of the East Siberian and Laptev Seas features stable geodynamic setttings, except for the northern areas involved in the post-rift subsidence at the late stages of the sedimentary mantle formation. The geodynamic zoning identified and characterized sedimentary basins differing by the genesis of accommodation space and formed under both compression (flexures in the periphery and inside folding zones) and tension (trans-tension, rift and passive margins, intra-plate). The assumption of similar geological processes to run in the same geodynamic settings makes it possible the presence or absence of hydrocarbon components in a sedimentary basin and the oil content at the early stages of investigation of sedimentary basins. The phased technology of paleotectonic and geodynamic analyses applied within this research includes: the examination of modern structural plans and distribution of sedimentary strata between the main surfaces of inconsistencies, vertical movements and rates of sedimentation; delineation of depocenters of sedimentation and stable downwarping zones. As a result of the implemented geodynamic analysis, certain types of structural forms are identified in the sedimentary mantle of the Eastern Arctic Seas (intermountain and submontane troughs, intra-continental, shear and tension at the boundaries of plates, compression at the boundary of plates, rift tension, superposed passive margins), and the forecast of their composition is made.

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