Tectonic situation in the area of Catav-Ivanovsk earthquakes in September 2018 (South Urals)

In: Moscow University Bulletin. Series 4. Geology, Heft 2, S. 23-29

Abstract

The structural features of the Katavsko-Yuryuzan faults zone are considered. According to the analysis of mesostructures, paleopole stresses, where horizontal northwest compression prevailed, were determined. Data on earthquakes, that occurred in September 2018 near the town of Katav-Ivanovsk, has been analyzed. Contradictions in determining the coordinates of epicenters and mechanisms of earthquakes foci calculated by different geological services were revealed. It is shown, that the situation of right-sided transpression, in which the structure of the northwestern part of the Bashkir meganticlinorium was formed, continues up to the present moment.