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Title: GEOCHEMICAL CHARACTERISTICS OF DEPTH PROFILE FROM THE HIGHMOOR PEAT (WESTERN SIBERIA, RUSSIA)
GEOCHEMICAL CHARACTERISTICS OF DEPTH PROFILE FROM THE HIGHMOOR PEAT (WESTERN SIBERIA, RUSSIA)

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Olga Shvartseva
10.5593/sgem2022V/3.2/s14.41
10.5593/sgem2022V/3.2
1314-2704
978-619-7603-54-5
English
22
3.2
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Forest Ecosystems
We investigated the changes in element content and distribution in peat profile in a study aimed to monitor the geochemical changes accruing in the process of peat accumulation. Changes in the chemical composition of peat ash and underlying sediments have been studied in the central part of the Ubinskoye bog in the foreststeppe zone of Western Siberia. Two parallel peat cores were sampled to a depth of 310 cm. The upper peat layers are characterized by oxidative environment and increased concentrations of elements with variable valence. In addition, high levels of chalcophilic elements have been recorded here, which are associated with the high anthropogenic load of recent decades. In deeper high-ash peat horizons, with an increase in the reducing environment along the peat bog profile, the content of rock-forming elements increases. For Br, Sr, Zn, Se, Mo and Ag, there is a peak in concentrations at a depth of 150-180 cm as a result of the groundwater inflow in this interval. Early diagenetic processes lead to the deposition of autigenic minerals. Therefore, barite is formed on the redox line, pyrite is found in the reducing environment. With depth, the content of Ca, Mg and Sr increases, which leads to the formation of autigenic carbonates.
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The work was carried out within the framework of the CarboRus project (075- 15-2021-610).
conference
https://doi.org/10.5593/sgem2022V/3.2/s14.41
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 06-08 December, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
353-360
06-08 December, 2022
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geochemical characteristics, peat deposits, diagenesis, depth profile