Postglacial peat accumulation in the interfluve of the Mologa and Sheksna rivers (NW East European Plain)
DOI:
https://doi.org/10.31951/2658-3518-2024-A-4-606Keywords:
peatlands, Mologa-Sheksna lowland, Late Holocene, testate amoebae, x-ray fluorescenceAbstract
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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This work is distributed under the Creative Commons Attribution-NonCommercial 4.0 International License.