EGU21-12664, updated on 04 Mar 2021
https://doi.org/10.5194/egusphere-egu21-12664
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Preliminary results of a multidisciplinary study of the buried peatland and host sediments of the Moscow-Valdai age (Dmitrov, Moscow region, Russia)

Ekaterina Ershova1,4, Svetlana Sycheva2, Svetlana Kuzmina3, Inna Zuganova2, Pavel Panin2, and Margarita Meteleva1
Ekaterina Ershova et al.
  • 1Moscow State, Ecology and Geography of Plants, Moscow, Russian Federation (ekaterinagershova@mail.ru)
  • 2Institute of Geography RAS, Moscow, Russian Federation
  • 3Paleontological Institute RAS, Moscow, Russian Federation
  • 4Kazan Federal University

The poster presents preliminary results of multidisciplinary studies of a 5-m section of Middle and Late Pleistocene deposits found in a quarry near the town of Dmitrov, Moscow region. The section includes Moscow fluvioglacial sands, alluvium, lake sapropels, and a layered lens of peat overlain by Valdai cover loams with large cryogenic deformations. The sediments were described and analyzed for pollen, plant macrofossils, and insect remains. The results of pollen analysis suggest that the deposits were formed during the second half of the Mikulino (Eemian) interglacial and during the transition to the Valdai (Weichselian) Glaciation (MIS 5e to MIS 5d). The pollen diagram reflects the replacement of deciduous forests by coniferous forests and the subsequent replacement of closed dark coniferous forests by open communities dominated by birch, shrubs, light-demanding grasses, and Artemisia. Seeds and fruits of wetland and aquatic plants, including endocarps of the extinct species Potamogeton sukaczevii, were found in samples from peat and underlying lake sediments. This may indicate the Mikulino or Early Valdai age of the studied deposits. The entomological fauna indicates the predominance of coastal and marsh species. Environmental conditions were relatively cool, rather characteristic of the late Interglacial. It is expected to obtain micromorphological, physicochemical characteristics of the sediments, as well as OSL dates to clarify the age of the sediments. This work was supported by RFBR, grant N19-29-05024 mk.

How to cite: Ershova, E., Sycheva, S., Kuzmina, S., Zuganova, I., Panin, P., and Meteleva, M.: Preliminary results of a multidisciplinary study of the buried peatland and host sediments of the Moscow-Valdai age (Dmitrov, Moscow region, Russia), EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-12664, https://doi.org/10.5194/egusphere-egu21-12664, 2021.

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