Abstract
Primary studies of the concentrations of rare elements in the sediments of two lakes on King George Island (Kitezh and Glubokoe) showed that their geochemistry reflects the geological features of the area. Compared to the composition of the upper part of the Earth’s crust, the studied sediments are enriched in Cu, Cd, V, Tl, Mn, Ti, and P. Similar patterns have been identified in the geochemistry of volcanic and sedimentary rocks of the Fildes Peninsula. Trends in REE changes generally follow their behavior in rocks, but the overall REE concentration in sediments of lakes is higher, which may be due to the presence of organic matter accumulating in sediments of water bodies. Unlike the aquatic environment, the chemical composition of sediments does not reflect the significant influence of the activities of polar stations. However, small increases in Pb and Sb concentrations in the upper sediments suggest the influence of long–range atmospheric transport of the contaminants.
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ACKNOWLEDGMENTS
The authors express their gratitude to the leadership of the Arctic and Antarctic Research Institute (St. Petersburg) for organizing the expedition to the King George Island area, to the analysts A.S. Paramonov, V.L. Utitsyna, and M.V. Ekova from the Institute of Geology of the Karelian Research Center of the Russian Academy of Sciences (Petrozavodsk) for the high–quality assessment of the concentrations of rare elements in the samples, to E.V. Syrozshko for creating the lake depth maps, and to M.A. Shestakov for creating the map of the research area.
Funding
The research was carried out within the framework of the Russian Science Foundation project no. 22-27-00131 (heavy metal content in water and sediments), as well as within the framework of the State order no. 1021111018324-1 of the Laboratory of Geoecology and Environmental Management of the Arctic of INEP KSC RAS, and No. FFZF-2024-0002 of St. Petersburg Federal Research Center of the Russian Academy of Sciences, Institute of Limnology of the Russian Academy of Sciences (data interpretation).
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Slukovskii, Z.I., Guzeva, A.V. Trace Elements in the Sediment Cores of Lakes on King George Island, Antarctica. Dokl. Earth Sc. (2024). https://doi.org/10.1134/S1028334X24600981
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DOI: https://doi.org/10.1134/S1028334X24600981