Mineralogical and Geochemical Features of a Peat Deposit in the Eutrophic Obskoye Fen under Anthropogenic Load (Western Siberia)

O. G. Savichev, M. A. Rudmin, A. K. Mazurov, N. G. Nalivaiko, V. I. Sergienko, I. P. Semiletov

Research output: Contribution to journalArticle

Abstract

Abstract: The chemical composition and mineral inclusions in peats and the underlying soils of the eutrophic Obskoye fen (Western Siberia, Tomsk Region) are studied. The basic pattern of a change in the mineralogical and geochemical conditions at depth consists in domination of hydroxides on top of the peat deposit and sulfides at the bottom. The geochemical reduction barrier is formed at the bottom of the peat deposit. Its functioning is related to increased concentrations of U and Hg. The markedly pronounced influence exerted by sewage discharge is associated with an increase in the Na concentration in acid extracts from peats and additional accumulation of the mixture of suspended, colloidal, and dissolved forms of some metals in the boggy environment.

Original languageEnglish
Pages (from-to)320-322
Number of pages3
JournalDoklady Earth Sciences
Volume492
Issue number1
DOIs
Publication statusPublished - 1 May 2020

Keywords

  • anthropogenic impact
  • mineralogical and geochemical conditions
  • Obskoye fen
  • Western Siberia

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Earth and Planetary Sciences(all)

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