On the issue of the formation of a “pink horizon” in varved clays of the Onega Ice Lake

Authors

  • Golyeva A.A. 1
  • Mergelov N.S. 1
  • Subetto D.A. 2
  • 1 Institute of Geography Russian Academy, Staromonetnij per., 27, Moscow, 119017, Russia
    2 Herzen State Pedagogical University of Russia, Moika emb. 48, 191186, Saint-Petersburg, Russia

DOI:

https://doi.org/10.31951/2658-3518-2024-A-4-380

Keywords:

iron, scanning electron microscope, ramen spectra, microanalyzer, microbial mats, varved clays, Onega Ice Lake

Abstract

The paper presents the results of a study of samples from the “pink horizon” in sediments of the Onega Ice Lake. A large amount of iron in this horizon is shown, their shapes and sizes are determined. The presence of microbial mats and biofilms in this layer was revealed, and a conclusion was made about the rate of accumulation of varyed clays.

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Published

2024-08-26

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Section

Articles