M. Gerasimov, Dr. Sci. (Geol.-Min.), Chief Geologist

Crimgeofizika Party, E-mail: ageocrimea@mail.ru

T. Galk, Dr. Sci. (Geol.), Head of

Ukrainian Scientific-Research Institute of Natural Gases (UkrNDIGaz),

E-mail: gazrozrobka@gmail.com

N. Evdoshcuk, Dr. Sci. (Geol.), Prof., Departament Head.,

Institute of Geological Science, NAS of Ukraine

55-B, Olesia Honchara Str., Kyiv, MSP, 01601, Ukraine

E-mail: myevdoshchuk@rambler.ru

T. Dryagina, Category 1 Geologist,

Party Crimgeofizika, E-mail: ageocrimea@mail.ru

 

Geodynamical evolution of the Crimean Back-arc Rift System

 

Geological and geophysical data on the southern petroleum region provided a move from a paradigm of the geosynclines and fault-block tectonics of the Earths 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 Earths 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.

Key Words: back-arc rift system, geodynamic evolution, sedimentary basin, seismic profiling, paleoterrain.