Late Pleistocene-Holocene coseismic deformations in the Malyi Yaloman River Valley (Gorny Altai)

E. V. Deev, I. D. Zolnikov, E. Yu Lobova

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Palaeoseismological studies were performed within the Yaloman graben (Gorny Altai). Five Quaternary sections with coseismic deformation structures (seismites) have been recognized in the lower course of the Malyi Yaloman River. Traces of ancient earthquakes are localized at two levels (Late Pleistocene-Holocene). The most likely mechanisms of the seismite formation are brittle failure, liquefaction, and fluidization. The types of coseismic deformations and their sizes suggest that the Yaloman graben was the locus of prehistoric earthquakes with M > 5-7, although modern-day seismic activity consists of smaller-magnitude earthquakes. This should be taken into account in assessing the seismic hazards during construction of gas pipeline to China and tourism infrastructure facilities.

Original languageEnglish
Pages (from-to)1256-1272
Number of pages17
JournalRussian Geology and Geophysics
Volume56
Issue number9
DOIs
Publication statusPublished - 1 Sep 2015

Keywords

  • Earthquakes
  • Gorny altai
  • Quaternary deposits
  • Seismites
  • Yaloman graben

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