Lake sediments of the Kindo Peninsula and its surroundings (Karelian Coast of the White Sea) – Holocene stratigraphy and dynamics of organic accumulation

Authors

  • Kuznetsov, D.D. 1
  • Ludikova, A.V. 1
  • Subetto, D.A. 2
  • Kublitsky, Yu.A. 2
  • Leontev, P.A. 2
  • Potakhin, M.S. 3, 4
    • 1 Institute of Limnology of the Russian Academy of Sciences – SPC RAS, Sevastjanova Str., 9, St.-Petersburg, 196105, Russia
    2 Herzen State Pedagogical University of Russia, Moika Emb., 48, St.-Petersburg, 191186, Russia
    3 Karelian Research Center of the Russian Academy of Sciences, Pushkinskaya Str.,11, Petrozavodsk, 185910, Russia
    4 Petrozavodsk State University, Lenin Str., 33, Petrozavodsk, 185910, Russia

DOI:

https://doi.org/10.31951/2658-3518-2022-A-4-1456

Keywords:

lacustrine sediments, organic matter in lake sediments, loss on ignition, isolation basins

Abstract

Sediment stratigraphy and dynamics of organic accumulation of eight small isolation basins at the Kindo Peninsula and its surroundings (Karelian Coast of the White Sea) were studied. The sediments structure and organic matter dynamics were found to depend on the age of the isolation that, in turn, depends on the lake’s elevation. The thickest gyttja layer (up to 3 m) with loss-on-ignition values ca 60% formed in the lakes at the highest elevations. The thickness of marine-lacustrine transitional units varies from few cm to tens cm. The earlier isolation from the sea took place the thinner the transitional unit. In the lakes where isolation has not finished yet, the transitional sediments with LOI values ca 20-30% still form.

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Published

2022-09-02

Issue

2022: №4 (SI:Paleo2022)

Section

Articles

License

Creative Commons License
This work is distributed under the Creative Commons Attribution-NonCommercial 4.0 International License.