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Indicators of Oxic and Anoxic Conditions in the System of the Current Sedimentation of Saline Lake Shira (Khakassia), According to High-Resolution SR XRF Data on Bottom Sediments Frozen In Situ

  • I. A. KaluginEmail author
  • A. V. Darin
  • V. V. Babich
  • T. I. Markovich
  • Ya. V. Rakshun
  • F. A. Darin
  • D. S. Sorokoletov
  • D. Yu. Rogozin
Article
  • 25 Downloads

Abstract

Frozen upper layers of the bottom sediment of Lake Shira are selected using special sampling equipment. Frozen samples and solid samples prepared from the upper layers of a sediment core are examined by means of X-ray fluorescence at the Local and Scanning X-Ray Fluorescence Elemental Analysis Station of the Siberian Synchrotron and Terahertz Radiation Center’s Shared Resource Center. Analytical data on the initial frozen and processed solid samples demonstrate the good repeatability of the results. Quantitative estimates of the sedimentation regimes are obtained, and geochemical indicators of the change in redox conditions are determined from the analysis data. Lithological and geochemical records are synchronized with regional seasonal and annual variations in weather and climate, and with the hydrological regime of the lake for the last 50 years.

Notes

ACKNOWLEDGMENTS

This work was supported by the RF Ministry of Education and Science, unique project identifier RFMEFI62117X0012); by the Siberian Branch of the Russian Academy of Sciences as part of Integrated Program of Fundamental Scientific Research II.1., project no. 0330-2018-0021; and by the Russian Foundation for Basic Research, project nos. 16-05-00657, 16-05-00647, and 16-05-00091. It was performed using equipment of the Siberian Synchrotron and Terahertz Radiation Center’s shared resource center on the territory of the Budker Institute of Nuclear Physics’ VEPP-3/VEPP-4М/NLSE.

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Copyright information

© Allerton Press, Inc. 2019

Authors and Affiliations

  • I. A. Kalugin
    • 1
    Email author
  • A. V. Darin
    • 1
  • V. V. Babich
    • 1
  • T. I. Markovich
    • 1
  • Ya. V. Rakshun
    • 2
  • F. A. Darin
    • 2
  • D. S. Sorokoletov
    • 2
  • D. Yu. Rogozin
    • 3
    • 4
  1. 1.Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of SciencesNovosibirskRussia
  2. 2.Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of SciencesNovosibirskRussia
  3. 3.Institute of Biophysics, Siberian Branch, Russian Academy of SciencesKrasnoyarskRussia
  4. 4.Siberian Federal UniversityKrasnoyarskRussia

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