Abstract
Data on the abundance and distribution of organic carbon and carbonates in the recent bottom sediments of the Kerch Strait were analyzed. It was shown that the content of organic carbon in the bottom sediments of the navigable part of the strait adjacent to the Kerch Peninsula is currently 1.5–2.0 times higher than the values obtained in the 1970s and organic carbon contents in the modern bottom sediments from the part of the strait adjacent to the Taman Peninsula. This is explained by the spatial distribution of the grain-size composition of bottom sediments in the strait and changes in the sedimentation conditions due to anthropogenic activities. As possible environmental consequences of such changes, we discussed the formation of hypoxia zones and increasing risk of asphyxiation phenomena in the strait.
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Original Russian Text © E.I. Ovsyanyi, S.K. Konovalov, A.Yu. Mitropol’skii, E.A. Kotel’yanets, 2015, published in Geokhimiya, 2015, No. 12, pp. 1120–1131.
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Ovsyanyi, E.I., Konovalov, S.K., Mitropol’skii, A.Y. et al. Organic carbon and carbonates in the recent bottom sediments of the Kerch Strait. Geochem. Int. 53, 1123–1133 (2015). https://doi.org/10.1134/S0016702915120071
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DOI: https://doi.org/10.1134/S0016702915120071