10.24411/1728-323X-2019-11047

Physical geography and biogeography, soil geography and landscape geochemistry

GEOCHEMICAL INDICATION OF LAKE SEDIMENTS IN THE NORTH-WEST OF THE RUSSIAN FEDERATION

1. E. M. Nesterov, Ph. D. (Geology), Dr. Habil, Professor, Head of the Department of Geology and Geoecology, Herzen State Pedagogical University of Russia, This email address is being protected from spambots. You need JavaScript enabled to view it., St. Petersburg, Russia,
2. D.A. Morozov, Ph. D. (Geography), teacher of St. Petersburg Suvorov Military School, This email address is being protected from spambots. You need JavaScript enabled to view it., St. Petersburg, Russia,
3. M. A. Markova, Ph. D. (Geography), Associate Professor, Department of Geology and Geoecology, Herzen State Pedagogical University of Russia, This email address is being protected from spambots. You need JavaScript enabled to view it., St. Petersburg, Russia,
4. P. I. Egorov, Ph. D. (Geography), Associate Professor, Department of Geology and Geoecology, Herzen State Pedagogical University of Russia, egorov,This email address is being protected from spambots. You need JavaScript enabled to view it., St. Petersburg, Russia,
5. A. M. Bobrova, Engineer, Department of Geology and Geoecology, Herzen State Pedagogical University of Russia, This email address is being protected from spambots. You need JavaScript enabled to view it., St. Petersburg, Russia

The data of detailed geochemical studies allow us to reveal the features characterizing the peculiarities of the formation of bottom sediments. The changes in sedimentation in lakes are influenced by various factors, suchas the effects of climate and the intensity of chemical weathering, the degree of remoteness of the basin from the sources of demolition, the redox conditions in the reservoir, and many others. The distribution of the values of a number of petrochemical modules (CIA, Fe/Mn, Ba/Sr, Sr/Ca) indicates a change in the physical-geographical conditions and their influence on the compositionof sediments.

geochemical studies, bottom sediments, climate, petrochemical modules.

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