Postglacial peat accumulation in the interfluve of the Mologa and Sheksna rivers (NW East European Plain)

Authors

  • Sadokov D.O. 1 ID
  • Tsyganov A.N. 2 ID
  • Pastukhova Yu.A. 2
  • Mazei N.G. 2
  • Mazei Yu.A. 1, 2 ID
    • 1 Shenzhen MSU-BIT University, International University Park Road, 1, Dayun New Town, Longgang District, Shenzhen, Guangdong Province, 518172, P.R. China
    2 Lomonosov Moscow State University, Leninskiye gory, 1, Moscow, 119234, Russia

DOI:

https://doi.org/10.31951/2658-3518-2024-A-4-606

Keywords:

peatlands, Mologa-Sheksna lowland, Late Holocene, testate amoebae, x-ray fluorescence

Abstract

The Mologa-Sheksna Lowland peatlands represent incredibly valuable archives of information for reconstruction of the Holocene regional palaeoenvironmental dynamics. A profound application of multiproxy techniques (AMS dating, XRF scanning, testate amoebae and loss on ignition analyses), coupled with a palaeogeographical review, enabled us to perform a robust reconstruction of peat deposition and main palaeoenvironmental milestones during the Holocene. Peat accumulation started ~11.0 cal. ka BP over the upland watershed areas, preceded by mineral lacustrine sedimentation. In smaller enclosed basins, peat accumulation took place from ~8.7 cal. ka BP. Oscillations in accumulation rates and decomposition degree of peat along the cores provide evidence for dry Middle Holocene (8.6–4.4 cal. ka BP) and a 2-ka time lag in oligotrophic peat deposition onset between the two different geomorphological localities.

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Published

2024-08-26

Issue

2024: №4 (SI:Paleo2024)

Section

Articles

License

Copyright (c) 2024 Limnology and Freshwater Biology

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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