Open AccessMechanisms of accumulation of chemical elements in the peat deposit in east part of the Vasyugan Swamp (the Western Siberia)
Author(s) -
Олег Геннадьевич Савичев,
Олег Геннадьевич Савичев,
Aleksey Mazurov,
Aleksey Mazurov,
Maxim Rudmin,
Maxim Rudmin,
Natalia Shakhova,
Natalia Shakhova,
В. И. Сергиенко,
В. И. Сергиенко,
I. P. Semiletov,
I. P. Semiletov
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-56524863350-353
Subject(s) - peat , swamp , carbonate , geology , environmental chemistry , hydroxide , soil water , carbonate minerals , adsorption , geochemistry , oxidizing agent , pyrite , chemistry , mineralogy , soil science , ecology , inorganic chemistry , calcite , organic chemistry , biology
The results of mineralogical-geochemical studies of the oligotrophic pine-fruticulose-sphagnum segment of the Vasyugan Swamp (West Siberia) in the winter of 2017 are presented. A mathematical model is developed for the depth distribution of chemical elements in water and acid extracts of peats, organo-mineral sediments, and inorganic soil. It is shown that two complex geochemical barriers related to the changes in filtration properties of soils and contributing to the formation and/or accumulation of Fe compounds and other chemical elements function in the peat deposit. The first (oxidizing, reduction, sulfide, and adsorption hydroxide) barrier is found approximately at a depth of 0.40-1.25 m; the second (alkaline carbonate and hydrolytic, adsorption hydroxide, clayey, and carbonate) barrier lies in the lower layer of the peat deposit (a depth of 2.25-2.50 m). The result obtained is important for understanding the production-destruction methane cycle.