GEODYNAMICAL EVOLUTION OF THE CRIMEAN BACK-ARC RIFT SYSTEM
DOI:
https://doi.org/10.17721/1728-2713.65.09Keywords:
back-arc rift system, geodynamic evolution, sedimentary basin, seismic profiling, paleoterrainAbstract
Geological and geophysical data on the southern petroleum region provided a move from a paradigm of the geosynclines and faultblock tectonics of the Earth's crust and mantle to the paradigm of actualistic geodynamics, with supercontinents formation and breakup stages, including. A new paradigm made it possible to estimate the Crimean back-arc rift system in the southern region to be the most perspective on-land petroleum region within the north-western shelf of the Black Sea and the south-western sector of the Azov Sea. Tensional and compressional tectonic movements, mostly acting in opposite directions but making a strike-slip force prevalent, seriously affect all levels of the Earth's crust. The actualistic method applied to interpret subaerial surveillance data on digitized well log correlation diagrams allow for simulating local effective pays, structure and tectonics of genetically heterogeneous sedimentary basins. Crosscut and section studies of tectonic paleodiscontinuities that frame horst, antithetic, graben and homothetic blocks reveals strike-slip rifting which resulted in echelon folds. Cryptodiapir, diapir folds in the clay section and reef massifs in carbonate or terrigenous-carbonate sections also result from the tectonic zoning of the Crimean back-arc rift system.
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