SEISMOTECTONIC STUDIES OF SARMINSKOE PALEOSEISMODISLOCATIONS (WEST COAST OF LAKE BAIKAL)

A.V. Chipizubov, O.P. Smekalin, V.S. Imaev

Institute of the Earth's Crust of the Siberian Branch of the Russian Academy of Sciences,
Irkutsk, Russia

Corresponding author: O.P. Smekalin, e-mail: smekalin@crust.irk.ru

Abstract. The article deals with the results of the first complex geological and geophysical studies of the Sarminsky paleoseismodislocation (PSD). Based on the interpretation of the sections of the trench walls, the analysis of shallow geophysics data (electrical exploration, seismic exploration, GPR) and the morphological profiling of seismogenic relief microforms, a conclusion was drawn on the shear-uplift strain genesis. The planes of displacement of the main reverse faults and thrusts have a northwest fall, the minor ones are southeast. The kinematic characteristics of seismic movements indicate the formation of dislocations in the zone of the Primorsky fault under conditions of subhorizontal compression.

Keywords: Sarminsk paleoseismology dislocation, Primorsky fault, paleoseismology, shallow geophysics, trenching

Cite this article as: Chipizubov A.V., Smekalin O.P., Imaev V.S. Seismotectonic studies of Sarminskoe paleoseismodislocations (West coast of lake Baikal), Voprosy Inzhenernoi Seismologii (Problems of Engineering Seismology). 2019. V.46, No. 1. P.5–19. DOI: 10.21455/VIS2019.1-1 [in Russian].

English translation of the article will be published in Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online), https://link.springer.com/journal/11990), 2020, Volume 56, Issue 1.

About the authors

CHIPIZUBOV Anatoly Vasilyevich – Doctor of Geological and Mineralogical Sciences, Senior Researcher, Institute of the Earth's Crust, SB RAS. 664033, Irkutsk, ul. Lermontov, 128. Tel.: +7 (3952) 42-54-04. E-mail: chipizub@crust.irk.ru

SMEKALIN Oleg Petrovich – Senior Researcher, Institute of the Earth's Crust, SB RAS. 664033, Irkutsk, ul. Lermontov, 128. Tel.: +7 (914) 912-97-68. E-mail: smekalin@crust.irk.ru

IMAEV Valery Suleimanovich – Doctor of Geological and Mineralogical Sciences, Professor, Chief Researcher, Institute of the Earth's Crust, SB RAS. 664033, Irkutsk, ul. Lermontov, 128. Tel.: +7 (3952) 42-54-04. E-mail: imaev@crust.irk.ru