Home > Archive > No. 1–2 (187–188) 2022 > 58–70
Geology & Geochemistry of Combustible Minerals No. 1–2 (187–188) 2022, 58–70.
https://doi.org/10.15407/ggcm2022.01-02.058
Myroslava YAKOVENKO
Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: myroslavakoshil@ukr.net
Abstract
The article is devoted to the study of geochemical characteristics of the distribution, accumulation and migration of strontium in the lowland peats of the Lviv Region, both laterally and vertically, and to identify the main factors influencing the formation of its concentrations.
A significant uneven distribution of concentration, high dispersion and variability (coefficient of variation – 116.61, standard deviation – 564.11) of Sr in peats within deposits, districts and regions both with depth and area of distribution and high content indicators were established Sr relative to clarks of the lithosphere, soils, plant ash (CC relative to the lithosphere = 1.42; CC relative to soil clarks = 1.94; Сs relative to background values in the soils of Ukraine = 4.56; CK relative to clarks of terrestrial plants = 1.61).
The content of Sr in the peat of the Lviv Region ranges from 40–3190 mg/kg (average content 483.75 mg/kg, median content (background content) – 250 mg/kg), which is due to natural-climatic, geological, lithological, hydrogeochemical and anthropogenic factors.
The features of the distribution and the degree of concentration of Sr in the peatlands of the Lviv Region are mainly influenced by the chemical-mineralogical-petrographic composition of the bedrocks of the wear area during their weathering; terrain, climatic, geomorphological, tectonic and hydrogeological conditions of the area, which determine the of the weathering processes of the rocks in the wear areas, the degree of transformation of terrigenous material in the weathering processes, the rate of accumulation of biomass and the rate of its decomposition; features of water and mineral nutrition of the peatland.
High concentrations of strontium in the peat of the Lviv Region reflect the local regional processes of the concentration of the element in the mass of peat and may indicate the accumulation of Sr of both natural and anthropogenic origin in the upper layers of peat profiles. There is an enrichment of Sr in the upper intervals of deposits (0–1 m) of deposits in the northeastern part of the Lviv Region (Malopoliska peat region) is observed.
Keywords
peat, peat deposit, strontium, microelement composition, concentration, Clark concentration, accumulation, migration
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