Deep Structure of the Northwestern Termination of the Caucasus from New Geological and Geophysical Data

Rogozhin, E.A.; Gorbatikov, A.V.; Stepanova, M.Y.; Kharazova, Y.V.; Sysolin, A.I.; Andreeva, N.V.; Pogrebchenko, V.V.; Chervinchuk, S.Y.; Chen, J.; Liu, J.; Ovsyuchenko, A.N.; Lar'kov, A.S.

Авторы: Rogozhin E.A., Gorbatikov A.V., Stepanova M.Y., Kharazova Y.V., Sysolin A.I., Andreeva N.V., Pogrebchenko V.V., Chervinchuk S.Y., Chen J., Liu J., Ovsyuchenko A.N., Lar'kov A.S.
Журнал: Izvestiya. Physics of the Solid Earth
Том: 56
Номер: 6
Год издания: 2020
Издательство: Pleiades Publishing, Inc.
Местоположение издательства: New York, USA
Первая страница: 772
Последняя страница: 788
Оригинальные версии: ГЛУБИННОЕ СТРОЕНИЕ СЕВЕРО-ЗАПАДНОГО ОКОНЧАНИЯ КАВКАЗА ПО НОВЫМ ГЕОЛОГО-ГЕОФИЗИЧЕСКИМ ДАННЫМ
DOI: 10.1134/S1069351320060075
Аннотация: In 2014 to 2019, integrated geological and geophysical studies were carried out in the largest flexural-rupture and folded-and-fault zones in the North-West Caucasus (the Anapa, Akhtyr, Moldavanovka, Karabetov, Fanagoria and Azov anticlinal ridges and the Pshekha–Adler, Kerch–Tuzla, and Kerch Strait faults). Microseismic sounding method (MSM) was the main geophysical approach. The MSM studies established the deep structural features of the Earth’s crust in the study region and made it possible to correlate them with the specific tectonic structures on the surface. The correlation was based on reconciling the results of the MSM studies, the parameters of the sedimentary cover section and crustal discontinuities revealed by drilling and previous studies of the converted waves from the earthquakes. It is established that the Anapa flexure and the longitudinal tectonic zones have distinct deep roots beneath them. The Trans-Caucasian Anapa flexural-rupture zone separates the pericline of the North-West Caucasus from the region of the Taman Peninsula, whereas the longitudinal flexures and the fault structures separate the meganticlinorium from the subsided West Kuban and Azov blocks of the northern slope of the folded system and from the Kerch–Taman trough of the southern framing of the North-West Caucasus. The faults in the study region are divided into the deep faults penetrating into the lower crust and even reaching the upper mantle and the near-surface faults localized within the limits of the sedimentary cover in the Earth’s interior. The seismogenic role of these tectonic dislocations in the studied seismically active region is determined.
Добавил в систему: Горбатиков Андрей Вениаминович

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Deep Structure of the Northwestern Termination of the Caucasus from New Geological and Geophysical Dataстатья Исследовательская статья