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Russian Geology and Geophysics

2013 year, number 3

TRACES OF PALEOEARTHQUAKES IN THE QUATERNARY DEPOSITS OF INTERMONTANE BASINS IN CENTRAL GORNY ALTAI

E.V. Deev, I.D. Zolnikov, S.V. Goltsova, G.G. Rusanov, A.A. Emanov
Keywords: Neotectonics, earthquakes, seismites, Neopleistocene, Holocene, central Gorny Altai
Pages: 312-323

Abstract

Study of the sections of NeopleistoceneHolocene deposits filling the basins in central Gorny Altai has revealed earthquake-induced soft-sediment deformations (seismites). They formed as a result of the brittle deformation of deposits and liquefaction of loose water-saturated sediments under vibration seismic impact. The paleoearthquakes resulting in such seismites had the minimum intensity I = 6 and magnitude M = 56. Hence, the study region underwent strong earthquakes in the NeopleistoceneHolocene.