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doi: 10.24412/2687-1092-2023-10-377-380
1Institute of Limnology of the Russian Academy of Sciences, St. Petersburg, Russia 2 Institute of Ecology and Subsoil Use of Tatarstan Academy of Sciences, Kazan, Russia 3Museum of Anthropology and Ethnography of the Russian Academy of Sciences, St. Petersburg, Russia 4Institute of Linguistics, Literature and History of Karelian Research Centre RAS, Petrozavodsk, Russia 5Herzen State Pedagogical University of Russia, St. Petersburg, Russia
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Abstract. The main body of data on the Lake Ladoga sediments stratigraphy was obtained during the large-scale surveys carried out by expeditions of the Institute of Limnology of the Russian Academy of Sciences under the leadership of N.I. Semenovich in the late 1950s – early 1960s. In 2023, we collected a number of sediment cores in the southern part of Lake Ladoga, where clayey deposits dating back to the Early Holocene were previously described. The stratigraphy of the cores differs from the scheme given in the monograph by N.I. Semenovich “Bottom sediments of Lake Ladoga”. However, preliminary results of the diatom analysis suggest the presence of the Early Holocene sediments, including those of the Ancylus stage in the lowermost part of the sediment core collected at a depth of 44 m. By now, this is the southernmost and shallowest site in Lake Ladoga where the Ancylus diatoms have been described. Besides, in the bottommost part of the sediment core, an unprecedent finding of fish remains (vertebrae and scales of the European perch Perca fluviatilis) was made. Keywords: Lake Ladoga, Holocene, Ancylus transgression, lake sediments, diatom analyses, European perch
REFERENCES: Andreev A.P. Ladoga lake. St. Petersburg, 1877. 263 p. Kuznetsov D.D., Subetto D.A. Holocene accumulation of organic matter in bottom sediments of Lake Ladoga // Geomorfologiya. 2021. Vol. 52. No. 2. P. 63-71. doi:10.31857/S043542812102005X Semenovich N.I. Bottom sediments of Lake Ladoga. M.-L.: Nauka, 1966. 124 p. Subetto D.A. Bottom sediments of lakes: paleolimnological reconstructions. St. Petersburg, 2009. 339 p.
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Cite this article:
Kuznetsov D.D., Ludikova A.V., Askeev I.V., Monakhov S.P., Gerasimov D.V., Tarakanov A.S., Butov I.I. Holocene sediments of the southern part of Lake Ladoga – survey of the 1960s, results of 2023 and a unique find of the early Holocene perch // Relief and Quaternary deposits of the Arctic, Subarctic and North-West Russia. 2023. Issue 10. P. 377-380. doi: 10.24412/2687-1092-2023-10-377-380
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