Diachenko N.О., Diachenko A.S. Pop-up structures of petrodonetska anticline and adjacent territories

Details

Parent Category: Geo-Technical Mechanics, 2019

Category: Geo-Technical Mechanics, 2019, Issue 147

Geoteh. meh. 2019, 147, 15-27

 https://doi.org/10.1051/e3sconf/201910900017

Pop-up structures of Petrodonetska anticline and adjacent territories

¹DiachenkoN.О., ²DiachenkoA.S.

¹Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, ²Vilnius Gediminas Technical University

UDC  551.243.32                                               

Language: English

Abstract.

The article presents the results concerning a comparative analysis of paleotectonic reconstructions of the tectonic conditions dynamics for the formation of local plicative deformations and faulting in the study of both the macrostructure and its local separation using the example of the North-Eastern part of the Almazno-Maryevsky region, concluded between the Severodonetsk and Maryev thrusts, represented by the subzone dome-shaped folds and a system of complex-built anticlinal structures separated by synclines. To solve this problem, we used comparative analysis methods of paleotectonic reconstructions to equivalent materials simulation results. The formation conditions characteristics of the Petrodonetsk, Matrossko-Toshkovskaya, Lisichansk-Kremenskaya anticlines were obtained. In the plan, they are located en echelon-like, which is associated with a shift. The structure of the latter indicates a thrusting of the sedimentary stratum layers from the center of the Donetsk trough to its northern periphery. A kind of sedimentary strata bulging (raising) took place. A comparative analysis of the reconstruction results regarding the formation of the Lisichansk anticline on the border to the Severodonetsk thrust and mirror-symmetric sections in experimental research of pop-up structures, reveals their similarity and similitude in structure and formation. With oblique convergence of blocks from the shear zone, a series of overlapping thrusts are extruded. A central graben arises within the transpressive shear zone, along its axis due to the divergent reverse faults in the arched uplift. A system of parallel thrust faults, which is compressed across the plane of fault displacement and stretched in the vertical direction, forms a ramp. The block in the transpression zone is crushed in the direction transverse to the shear surface and extended in the vertical direction. System modeling (finite-element method) and optimization methods involvement based on computer algebraization will allow us to look from a mathematical point of view at the tectonic evolution and to improve mathematical forecasting methods of gas-containing tectonic elements in pop-up structures.

Keywords: pop-up structures, finite-element method, shear zone, ramp, analysis of paleotectonic.

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About the authors

Diachenko Natalia Oleksandrіvna,  Candidate of Geological Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of Geology of Coal Beds at Great Depths, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Diachenko Andrii Serhiiovych,Master of Science,Postgraduate Student of Fundamental Sciences Faculty, Vilnius Gediminas Technical University (VGTU), Lithuanian Academy of Sciences, Vilnius, Lithuania, This email address is being protected from spambots. You need JavaScript enabled to view it.

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