EGU2020-1097, updated on 07 Jan 2022
https://doi.org/10.5194/egusphere-egu2020-1097
EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Palaeoenvironmental development of the accumulative fan in Western Russia from the Little Ice Age to the present time

Wiktor Piech1, Piotr Kittel1, Artur Ginter2, Andrey Mazurkevich3, Anna Hrynowiecka4, Renata Stachowicz-Rybka5, Katarzyna Cywa5, Agnieszka Mroczkowska1,6, Elena Pavlovskaia7, Eduard Kazakov8, Yulia Teltevskaya9, Jarosław Sikorski10, Daniel Okupny11, Krzysztof Błaszczyk12, and Bartosz Kotrys13
Wiktor Piech et al.
  • 1University of Łódź, Faculty of Geographical Sciences, Department of Geomorphology and Palaeogeography, Poland (wiktor.piech@unilodz.eu; piotr.kittel@geo.uni.lodz.pl; A_Mroczkowska@outlook.com)
  • 2University of Łódź, Faculty of Philosophy and History, Institute of Archaeology, Department of Historical Archaeology and Weapons Studies, Poland (artur.ginter@gmail.com)
  • 3The State Hermitage Museum, Saint Petersburg, Russia (a-mazurkevicz@mail.ru)
  • 4Marine Geology Branch, Gdansk Polish Geological Institute - National Research Institute, Poland (ahry@pgi.gov.pl)
  • 5W. Szafer Institute of Botany Polish Academy of Sciences, Poland (r.stachowicz@botany.pl; k.cywa@botany.pl)
  • 6Past Landscape Dynamic Laboratory, Institute of Geography and Spatial Organization, Polish Academy of Sciences, Poland (A_Mroczkowska@outlook.com)
  • 7Department of Geophysics, Faculty of Earth Sciences, Saint Petersburg State University, Russia (pavlovskaia.elena@gmail.com)
  • 8Nansen International Environmental and Remote Sensing Center, Saint Petersburg, Russia (e.kazakov@spbu.ru)
  • 9Saint Petersburg State University, Institute of Earth Sciences, Department of Cartography and Geoinformatics, Russia (yulia.teltevskaya@mail.ru)
  • 10Institute of Physics Centre for Science and Education Department of Radioisotopes GADAM Centre of Excellence, Poland (Jaroslaw.Sikorski@polsl.pl)
  • 11Institute of Marine and Environmental Sciences, Faculty of Physical, Mathematical and Natural Sciences, University of Szczecin, A. Mickiewicza 16, 70-383, Szczecin, Poland (daniel.okupny@up.krakow.pl)
  • 12Stanisław Sankowski Regional Museum in Radomsko, Poland (artefakt-archeo@o2.pl)
  • 13Polish Geological Institute - National Research Institute, Pomeranian Branch in Szczecin, Poland (bkotr@pgi.gov.pl)

The accumulative fan was formed at the mouth of a well-developed system of erosive cuts in the lower Serteyka River valley in western Russia. The length of the fan reaches 70 m, and its thickness is up to 2 m. The erosive cuts (gullies) were formed on the steep and short slopes of the tunnel valley (transformed later into the river valley) and dissect the surface of the glaciofluvial plain for a length of ca. 110 meters. The absolute chronology of the development of that relief form was determined based on 14C and 210Pb data set. It was started at the earliest in the second half of the 17th century, and finished before the mid-19th c. AD. These processes can be correlated therefore with palaeoenvironmental changes during the pessary of the Little Ice Age (LIA), as well as with human impact during the agrarian and industrial revolution in Eastern Europe. Studied accumulative fan is formed of deluvium with the insertion of the proluvium and an agricultural diamikton which is developed in ceiling part. The research based on the results of analysis of depth diversity of textural features (mean grain-size diameter, sorting index, skewness and kurtosis), geochemical features (chemostratigraphy determined on the basis of X-ray fluorescence spectroscopy – XRF) of the fan’s sediments and palaeoecological features (palynology analysis, subfossil Chironomidae and Cladocera analysis, plant macrofossil analysis) of biogenic deposits from under the fan.

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