Morphostructure of the junction zone of the North-Western Caucasus and the Kerch-Taman region

Ya. I. Trikhunkov; O. V. Gaidalenok; D. M. Bachmanov; A. V. Marinin

doi:10.7868/S0435428118040077

Morphostructure of the junction zone of the North-Western Caucasus and the Kerch-Taman region

Ya. I. Trikhunkov, O. V. Gaidalenok, D. M. Bachmanov, A. V. Marinin

https://doi.org/10.7868/S0435428118040077

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Abstract

Morphostructural analysis based on interpretation of Digital Elevation Model and field studies as well as the most recent geological and geophysical data revealed the continuation of the fold-faulted morphostructures of the Northwestern Caucasus in the Kerch-Taman region and their developing under conditions of general shortening and lateral compression. The direction of compression changes the vector from the northeast to the meridional direction, which is reflected in the reorientation of the axes of folded morphostructures and geophysical anomalies from the sub-Caucasian to latitudinal. Position of the fault structures which acts as the western limitation of the North-Western Caucasus are clarified, and their kinematic characteristics are confirmed. It is established that the widely described in previous researches the Anapa-Dzhiginka transverse synsedimentary normal fault zone has a diffuse character, but it is weakly expressed in the relief. In the light of new data, the role of the boundary of the mountain structure is thought to have played by the Abrau transverse discontinuous zone located to the east. We have recognized it as a Trans-Caucasian regional disruption. It also has distinct signs of normal fault kinematics with vertical amplitude of at least 600 m in the Quaternary. It is recognize as a disruptive structure of regional significance that limits the whole orogen.

Keywords

Northwestern Caucasus, Kerch-Taman’ region, morphostructural analysis, remote sensing

About the Authors

Ya. I. Trikhunkov

Geological Institute RAS, Moscow
Russian Federation

O. V. Gaidalenok

Geological Institute RAS, Moscow
Russian Federation

D. M. Bachmanov

Geological Institute RAS, Moscow
Russian Federation

A. V. Marinin

Schmidt Institute of Physics of the Earth RAS, Moscow
Russian Federation

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Review

For citations:

Trikhunkov Ya.I., Gaidalenok O.V., Bachmanov D.M., Marinin A.V. Morphostructure of the junction zone of the North-Western Caucasus and the Kerch-Taman region. Geomorfologiya. 2018;(4):80-95. (In Russ.) https://doi.org/10.7868/S0435428118040077