Kostiantyn Andriiovych BEZRUCHKO, Ludmyla Ivanivna PYMONENKO, Nataliia Victorivna VERGELSKA, Andriy Anatoliiovych KARHAPOLOV

Geodynamic Processes of the Southern Margin of the Eastern European Platform in the Phanerozoic

Geodynamic processes occurring during the formation and transformation of geological structures significantly determine their tectonic structure, characterize the presence and spatial distribution of mineral deposits. In this regard, the features of the geodynamic processes of the southern margin of the East European Platform (EEP) in the Phanerozoic are of scientific and practical interest. The analysis of the lithological and stratigraphic conditions for the formation of the main geological structures in the southern part of the EEP – Dobrogea, Caucasus, Crimea, and Donbas was carried out. The analysis is based on the mobilist concept of global tectonics. Comparison of the main stages in the development, geodynamic processes, and the mechanism of formation of the main structures of the EEP (Dobrogea, Crimea, Caucasus, Donbas) in the Phanerozoic attested to the general patterns in the formation and development of these structures. A characteristic feature in the structure of the considered structures is the shift of the axis of young basins to the northeast. The formation of such structures is possible only as a result of the periodic action of horizontal compressive forces with a significant shearing component. The well-known mechanism for the formation of back-arc marginal basins formed on the active margins of lithospheric plates as a result of subduction corresponds to the established regularities in the formation of structures. The periodic underthrusting of the oceanic plate led to a restructuring of the structural plans and a change in the temperature conditions of the researched regions. This has affected the features of the spatial distribution of oil-and-gas-promising areas. The data obtained will allow expanding the area and optimizing the search process for such areas.

Keywords:

Southern margin of the Eastern European Phanerozoic, Geodynamic processes, Mobilist concept, Oil-and-gas-promising areas,

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