Lake Gusinoye (the southern part of East Siberia, Russia): sedimentary history inferred from high-resolution reflection seismic data

  • Chensky D.A. 1
  • Grigorev K.A. 2
  • Chensky A.G. 1
  • Parkhomchuk E.V. 2
  • Fedotov A.P. 3
  • 1 National Research Irkutsk State Technical University, Lermontov st., 83, Irkutsk, Russia
    2 Boreskov Institute of Catalysis the Siberian Branch of RAS, Lavrentiev Ave. 5 Novosibirsk, Russia
    3 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Ulan-Batorskaya Str., 3, Irkutsk, 664033, Russia
Keywords: High-resolution seismic data, Lake Gusinoye, East Siberia

Abstract

This paper studies the formation of the sediment cover in Lake Gusinoye. For this purpose, we used high-resolution seismic data. Depression of Lake Gusinoye has a tectonic origin; however, there is no evidence of recent tectonic activity. Sediment thickness in Lake Gusinoye is less than 9 m, and its history is short (<35-45 ka). In addition, seismic stratigraphy records contain three contrasting episodes when the lake level dramatically decreased. It is very likely that there were also other shorter episodes of low-level stands. Thus, seismic structures of lakes Gusinoye and Kotokel have a strong resemblance, and it is most likely that their history began at the same time, ca. 40 ka BP.

Published
2019-10-22
Section
Articles