Highly variable sediment deposition in Lake Imandra, NW Russia, since the Late Pleistocene
ABSTRACT To understand the dynamics of sediment deposition and the potential influences of complex current systems in large lakes, Lake Imandra (Kola Peninsula) has been investigated. Seismic and echo‐sounder data of the central part of Bolshaya Imandra reveal the sediment architecture in unpreceden...
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Online Access: | http://dx.doi.org/10.1002/jqs.3353 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3353 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/jqs.3353 |
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crwiley:10.1002/jqs.3353 2024-06-02T08:08:17+00:00 Highly variable sediment deposition in Lake Imandra, NW Russia, since the Late Pleistocene Lenz, Matthias Lebas, Elodie Lenz, Marlene M. Fedorov, Grigory Gromig, Raphael Kolka, Vasili Krastel, Sebastian Leicher, Niklas Melles, Martin Wagner, Bernd Saint Petersburg State University Deutsche Forschungsgemeinschaft 2021 http://dx.doi.org/10.1002/jqs.3353 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3353 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/jqs.3353 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Journal of Quaternary Science volume 37, issue 5, page 745-764 ISSN 0267-8179 1099-1417 journal-article 2021 crwiley https://doi.org/10.1002/jqs.3353 2024-05-03T11:56:14Z ABSTRACT To understand the dynamics of sediment deposition and the potential influences of complex current systems in large lakes, Lake Imandra (Kola Peninsula) has been investigated. Seismic and echo‐sounder data of the central part of Bolshaya Imandra reveal the sediment architecture in unprecedented detail. In addition, the sediment core data indicate highly variable depositional processes since the Late Pleistocene. The complex morphology of the lacustrine basin favoured accumulation of sediment in depressions, where they were preserved from erosion. Three main stratigraphic units (SU I–III) were identified above the acoustic basement. The oldest SU III is best preserved along a tectonic trench and interpreted as glacial deposits partly eroded by the Scandinavian Ice Sheet during Marine Isotope Stage (MIS) 2. The overlying SU II deposits are regarded as a till related to MIS 2 glaciation. The youngest SU I represents glaciofluvial, glaciolacustrine and lacustrine sediment deposited after ice retreat. As the north–south‐trending main axis of Bolshaya Imandra runs parallel to the predominant wind direction, the basin is subject to strong wind‐induced surficial currents and compensatory subsurface currents. These currents occur in water depth of 0–15 and deeper than 30 m, respectively, and their velocity prevents sediment accumulation. Article in Journal/Newspaper Ice Sheet kola peninsula Wiley Online Library Imandra ENVELOPE(33.260,33.260,67.849,67.849) Kola Peninsula Journal of Quaternary Science 37 5 745 764 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT To understand the dynamics of sediment deposition and the potential influences of complex current systems in large lakes, Lake Imandra (Kola Peninsula) has been investigated. Seismic and echo‐sounder data of the central part of Bolshaya Imandra reveal the sediment architecture in unprecedented detail. In addition, the sediment core data indicate highly variable depositional processes since the Late Pleistocene. The complex morphology of the lacustrine basin favoured accumulation of sediment in depressions, where they were preserved from erosion. Three main stratigraphic units (SU I–III) were identified above the acoustic basement. The oldest SU III is best preserved along a tectonic trench and interpreted as glacial deposits partly eroded by the Scandinavian Ice Sheet during Marine Isotope Stage (MIS) 2. The overlying SU II deposits are regarded as a till related to MIS 2 glaciation. The youngest SU I represents glaciofluvial, glaciolacustrine and lacustrine sediment deposited after ice retreat. As the north–south‐trending main axis of Bolshaya Imandra runs parallel to the predominant wind direction, the basin is subject to strong wind‐induced surficial currents and compensatory subsurface currents. These currents occur in water depth of 0–15 and deeper than 30 m, respectively, and their velocity prevents sediment accumulation. |
author2 |
Saint Petersburg State University Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Lenz, Matthias Lebas, Elodie Lenz, Marlene M. Fedorov, Grigory Gromig, Raphael Kolka, Vasili Krastel, Sebastian Leicher, Niklas Melles, Martin Wagner, Bernd |
spellingShingle |
Lenz, Matthias Lebas, Elodie Lenz, Marlene M. Fedorov, Grigory Gromig, Raphael Kolka, Vasili Krastel, Sebastian Leicher, Niklas Melles, Martin Wagner, Bernd Highly variable sediment deposition in Lake Imandra, NW Russia, since the Late Pleistocene |
author_facet |
Lenz, Matthias Lebas, Elodie Lenz, Marlene M. Fedorov, Grigory Gromig, Raphael Kolka, Vasili Krastel, Sebastian Leicher, Niklas Melles, Martin Wagner, Bernd |
author_sort |
Lenz, Matthias |
title |
Highly variable sediment deposition in Lake Imandra, NW Russia, since the Late Pleistocene |
title_short |
Highly variable sediment deposition in Lake Imandra, NW Russia, since the Late Pleistocene |
title_full |
Highly variable sediment deposition in Lake Imandra, NW Russia, since the Late Pleistocene |
title_fullStr |
Highly variable sediment deposition in Lake Imandra, NW Russia, since the Late Pleistocene |
title_full_unstemmed |
Highly variable sediment deposition in Lake Imandra, NW Russia, since the Late Pleistocene |
title_sort |
highly variable sediment deposition in lake imandra, nw russia, since the late pleistocene |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/jqs.3353 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3353 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/jqs.3353 |
long_lat |
ENVELOPE(33.260,33.260,67.849,67.849) |
geographic |
Imandra Kola Peninsula |
geographic_facet |
Imandra Kola Peninsula |
genre |
Ice Sheet kola peninsula |
genre_facet |
Ice Sheet kola peninsula |
op_source |
Journal of Quaternary Science volume 37, issue 5, page 745-764 ISSN 0267-8179 1099-1417 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1002/jqs.3353 |
container_title |
Journal of Quaternary Science |
container_volume |
37 |
container_issue |
5 |
container_start_page |
745 |
op_container_end_page |
764 |
_version_ |
1800753500016082944 |