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DIAPIR STRUCTURES OF THE TEREK-SUNZHA
OIL AND GAS REGION OF THE EASTERN
CAUCASUS – QUASI-MUD VOLCANOES
25.00.00 Sciences about Earth
Description
Within the Terek-Sunzha oil and gas region of the
Eastern Caucasus a productive sediments are clearly
expressed by the classical diapir due to the increase in
power in the arched part of the strata of the Maikop
clays. In accordance with the theory of I. M. Gubkin,
developed based on the analysis of the structure of the
oil and gas structures of mud volcanoes of Azerbaijan,
diapirism of the structure is an important prerequisite for
the formation of a mud volcano. The article provides a
comparative analysis of diapir structures of the TerekSunzha
oil and gas region of the Eastern Caucasus,
which is quasi-mud unripe volcanoes, and structures of
mud volcanoes in the South-Eastern end of the Caucasus
range (the Apsheron Peninsula and other territories of
Azerbaijan) and the North-Western end of the Caucasus
range (the Kerch and Taman Peninsula). It is shown that
the formation of diapir structure, when, in the context of
high power clay strata, is not a sufficient condition for its
transformation into a mud volcano. In such geological
conditions, it is essential to determine the capacity of
clay strata, but also the degree of its water-filled
porosity, visco-plastic and fluid-forming properties,
contributing to the transition of the breed in a phase of
active current and the coming to the surface
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THE ROLE OF SEISMICITY IN THE FORMATION OF GEOLOGICAL STRUCTURES WITHIN THE TEREK-SUNZHA PETROLEUM
PROVINCE
25.00.00 Sciences about Earth
Description
Within the Terek-Sunzha gas area we have identified patterns, most of which are divided into blocks in some cases with large amplitude shear. The processes of destruction of structures took place during the period of their formation and the subsequent time and due to the strong and catastrophic earthquakes. The article provides a statistical analysis of strong earthquakes in this region during the period 1688-2008 and the regularities of their existence. It is shown that the maximum number of earthquakes took place during the period of the depths of 5-12 km and the distribution of the number of strong earthquakes at levels subject to certain matematical patterns. With regard to the analysis of the distribution of earthquakes in a single year in the whole of the globe, we obtained the correlation of the displacement of rocks from levels of existence of earthquakes and possible displacement of rocks to very catastrophic earthquakes. We have also given the forecast frequency and the number of strong catastrophic earthquakes for the period from the beginning of the formation of structures up to the present time. We assessed maximum displacements of rock blocks during this time, which is in good agreement with the actual values of the displacement of rock blocks