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Seasonal geochemical signals in varves of the Lake Donguz-Orun bottom sediments from scanning X-ray fluorescence with the use of microcapillary X-ray optics

  • Proceedings of the 20th National Conference on the Use of Synchrotron Radiation “SR-2014” and the National Youth Conference “Using Synchrotron Radiation”
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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

The distribution of minor elements in a sample of bottom sediments from Lake Donguz-Orun, Northern Caucasus, is studied via scanning X-ray fluorescence microanalysis using beams of synchrotron radiation from the VEPP-3 storage ring. A beam of exciting radiation 15 μm in diameter is obtained with microcapillary X-ray optics to conduct detailed studies of the inner structure of individual varves. It is shown that the Rb/Sr ratio is related to particle size and could be a spring flood marker. Estimates of the current rate of sedimentation in the lake, based on counting visually discernible layers and from geochemical indicators, coincides with the isotopic data. Quantitative links between sediment composition and meteorological data (temperature and atmospheric precipitation) were found.

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Authors and Affiliations

  1. Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    A. V. Darin, I. A. Kalugin, N. V. Maksimova & T. I. Markovich

  2. Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    Ya. V. Rakshun, D. S. Sorokoletov & F. A. Darin

Authors
  1. A. V. Darin
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  2. Ya. V. Rakshun
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  3. D. S. Sorokoletov
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  4. F. A. Darin
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  5. I. A. Kalugin
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  6. N. V. Maksimova
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  7. T. I. Markovich
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Corresponding author

Correspondence to A. V. Darin.

Additional information

Original Russian Text © A.V. Darin, Ya.V. Rakshun, D.S. Sorokoletov, F.A. Darin, I.A. Kalugin, N.V. Maksimova, T.I. Markovich, 2015, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2015, Vol. 79, No. 1, pp. 137–140.

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Darin, A.V., Rakshun, Y.V., Sorokoletov, D.S. et al. Seasonal geochemical signals in varves of the Lake Donguz-Orun bottom sediments from scanning X-ray fluorescence with the use of microcapillary X-ray optics. Bull. Russ. Acad. Sci. Phys. 79, 122–125 (2015). https://doi.org/10.3103/S1062873815010104

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  • DOI: https://doi.org/10.3103/S1062873815010104

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