PALAEOSEISMIC FACTORS OF SHAPING THE CAUCASUS BLACK SEA COASTAL AREA BETWEEN ANAPA AND NOVOROSSIYSK

O. Yu. Kritskaya; V. I. Popkov; A. A. Ostapenko

doi:10.15356/0435-4281-2017-4-27-34

PALAEOSEISMIC FACTORS OF SHAPING THE CAUCASUS BLACK SEA COASTAL AREA BETWEEN ANAPA AND NOVOROSSIYSK

O. Yu. Kritskaya, V. I. Popkov, A. A. Ostapenko

https://doi.org/10.15356/0435-4281-2017-4-27-34

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Abstract

Significant seismic events of the recent geological past are reflected in the relief of some areas of the Black Sea coast of the Caucasus region, of which the highest degree of seismotectonic transformation was characteristic to the area from Anapa to Novorossiysk. The current study was aimed at identification of palaeoseismodislocations and seismogravitational deformations, holding their morphological and morphometric analysis in order to determine the mechanism of formation, relative age, role in shaping the modern landscapes. It was found that seismogravitational structures have a complex composition and are distinctly expressed in relief. Many of them have common morphological features such as clear lines of landslide separation, typical hilly terrain morphology, occurrence of seismogravitational xenoliths and steep front benches.

Geomorphological analysis and interpretation of satellite images revealed two main types of seismogravitational structures. These structures have different ages and were formed in several stages, connected with the repeated display of seismic events. Most distinct are differences in the submarine topography of different age structures.

The modern exogenous processes are prone to the significant influence of the seismogenic relief transformation. The most active surface processes are erosion and rockfall processes occurring in unconsolidated seismogravitational sediments. Total scale of landscape changes indicates a high energy class of earthquakes and the probable location of their epicenters within or very close to the studied territory

Keywords

seismotectonic, seismogravitational deformations, landslides, earthquake, relief

About the Authors

O. Yu. Kritskaya

Kuban State University
Russian Federation
Krasnodar

V. I. Popkov

Kuban State University
Russian Federation
Krasnodar

A. A. Ostapenko

Kuban State University
Russian Federation
Krasnodar

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Review

For citations:

Kritskaya O.Yu., Popkov V.I., Ostapenko A.A. PALAEOSEISMIC FACTORS OF SHAPING THE CAUCASUS BLACK SEA COASTAL AREA BETWEEN ANAPA AND NOVOROSSIYSK. Geomorfologiya. 2017;(4):27-34. (In Russ.) https://doi.org/10.15356/0435-4281-2017-4-27-34