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DATING OF THE RECENT SEDIMENTARY STRATA OF THE MARGINAL BASINS OF ÅASTERN MURMAN (KOLA PENINSULA) USING THE EXAMPLE OF YARNYSHNAYA AND ZELENETSKAYA BAYS
JOURNAL: Volume 14, No. 3, 2024, p. 393-405HEADING: Study and development of nature resources of the Arctic
AUTHORS: Meshcheriakov, N.I., Usyagina, I.S., Ilyin, G.V., Ivanova, N.S.
ORGANIZATIONS: Murmansk Marine Biological Institute of Kola Scientific Center of the Russian Academy of Sciences
DOI: 10.25283/2223-4594-2024-3-393-405
UDC: 621.039.86(268.45+210.5)
The article was received on: 16.03.2024
Keywords: Kola peninsula, radionuclides, sedimentation chronology, lithotypes, coastal area
Bibliographic description: Meshcheriakov, N.I., Usyagina, I.S., Ilyin, G.V., Ivanova, N.S. Dating of the recent sedimentary strata of the marginal basins of Åastern Murman (Kola Peninsula) using the example of Yarnyshnaya and Zelenetskaya Bays. Arktika: ekologiya i ekonomika. [Arctic: Ecology and Economy], 2024, vol. 14, no. 3, pp. 393-405. DOI: 10.25283/2223-4594-2024-3-393-405. (In Russian).
Abstract:
The authors have studied sediment genesis in the Kola Peninsula bays, the most popular and developed part of the coastal shelf by the population. The main tool used is the method of radioisotope chronology of sedimentary layers based on changes in the specific activity of the natural isotope 210Pb and technogenic 137Cs. It has been revealed that the marginal basins of Murman are characterized by monotonous sedimentation in recent centuries. The average sedimentation rate is 0.15—0.17 cm/year. The sedimentary sequence is composed of silty-pelite-sized material. It has been established that the role of ice rafting in the formation of bottom sediment in coastal bays has decreased over the past centuries.
Finance info: The Russian Science Foundation grant supported the study (project no. 22-17-00243 “Radiation oceanology and geoecology of the coastal shelf of the Barents and White Seas. Bioinert interactions in the system: bottom sediments — water — macroalgae — microorganisms, their role in the remediation of the marine coastal ecosystem under radiation and chemical pollution in the Arctic”).
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