Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation
Glacial sediments in the eastern part of the Głubczyce Plateau, at the Krowiarki site, were studied. Two units were distinguished within the sedimentary succession. The lower unit is composed of mainly sandy sediments with diamicton interbeds, the upper unit of very fine silt and clay sediments that...
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Online Access: | https://hdl.handle.net/20.500.12128/17904 https://doi.org/10.1515/geo-2020-0182 |
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ftunivsilesia:oai:rebus.us.edu.pl:20.500.12128/17904 2023-05-15T16:40:11+02:00 Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation Salamon, Tomasz 2020 https://hdl.handle.net/20.500.12128/17904 https://doi.org/10.1515/geo-2020-0182 en eng "Open Geosciences" Vol. 12, iss. 1 (2020), s. 726-736 2391-5447 http://hdl.handle.net/20.500.12128/17904 doi:10.1515/geo-2020-0182 Uznanie autorstwa 3.0 Polska http://creativecommons.org/licenses/by/3.0/pl/ CC-BY glaciomarginal zone stagnant ice ice sheet dynamics lithofacies analysis older Saalian Sudeten Foreland info:eu-repo/semantics/article 2020 ftunivsilesia https://doi.org/20.500.12128/17904 https://doi.org/10.1515/geo-2020-0182 2022-12-31T20:14:33Z Glacial sediments in the eastern part of the Głubczyce Plateau, at the Krowiarki site, were studied. Two units were distinguished within the sedimentary succession. The lower unit is composed of mainly sandy sediments with diamicton interbeds, the upper unit of very fine silt and clay sediments that exhibit rhythmic lamination in parts. Based on the textural and structural features of deposits, local deformations and palaeoflow directions, it was found that the sediments had been deposited within an ice crevasse, which was initially open and functioned as an ablation flow artery. The sediments were deposited in the form of a small fan dominated by sheetflows. Glacial tills were also redeposited on its surface. In a later phase, the crevasse was blocked. As a result, it was filled with water, leading to the development of a crevasse lake in which low-energy deposition dominated. The crevasse style of deposition indicates that, in the final stage of glaciation, the marginal part of the ice sheet was in a stagnant phase. This conclusion applies to the part located on the southern side of the watershed of the eastern Głubczyce Plateau. The probable reason for the stagnation of the ice sheet was the distinct loss of ice supply above the local topography barrier due to the decreasing thickness of the ice sheet in the studied area. Article in Journal/Newspaper Ice Sheet The Repository of the University of Silesia (RE-BUŚ) Open Geosciences 12 1 726 736 |
institution |
Open Polar |
collection |
The Repository of the University of Silesia (RE-BUŚ) |
op_collection_id |
ftunivsilesia |
language |
English |
topic |
glaciomarginal zone stagnant ice ice sheet dynamics lithofacies analysis older Saalian Sudeten Foreland |
spellingShingle |
glaciomarginal zone stagnant ice ice sheet dynamics lithofacies analysis older Saalian Sudeten Foreland Salamon, Tomasz Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation |
topic_facet |
glaciomarginal zone stagnant ice ice sheet dynamics lithofacies analysis older Saalian Sudeten Foreland |
description |
Glacial sediments in the eastern part of the Głubczyce Plateau, at the Krowiarki site, were studied. Two units were distinguished within the sedimentary succession. The lower unit is composed of mainly sandy sediments with diamicton interbeds, the upper unit of very fine silt and clay sediments that exhibit rhythmic lamination in parts. Based on the textural and structural features of deposits, local deformations and palaeoflow directions, it was found that the sediments had been deposited within an ice crevasse, which was initially open and functioned as an ablation flow artery. The sediments were deposited in the form of a small fan dominated by sheetflows. Glacial tills were also redeposited on its surface. In a later phase, the crevasse was blocked. As a result, it was filled with water, leading to the development of a crevasse lake in which low-energy deposition dominated. The crevasse style of deposition indicates that, in the final stage of glaciation, the marginal part of the ice sheet was in a stagnant phase. This conclusion applies to the part located on the southern side of the watershed of the eastern Głubczyce Plateau. The probable reason for the stagnation of the ice sheet was the distinct loss of ice supply above the local topography barrier due to the decreasing thickness of the ice sheet in the studied area. |
format |
Article in Journal/Newspaper |
author |
Salamon, Tomasz |
author_facet |
Salamon, Tomasz |
author_sort |
Salamon, Tomasz |
title |
Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation |
title_short |
Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation |
title_full |
Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation |
title_fullStr |
Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation |
title_full_unstemmed |
Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation |
title_sort |
ice-crevasse sedimentation in the eastern part of the głubczyce plateau (s poland) during the final stage of the drenthian glaciation |
publishDate |
2020 |
url |
https://hdl.handle.net/20.500.12128/17904 https://doi.org/10.1515/geo-2020-0182 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
"Open Geosciences" Vol. 12, iss. 1 (2020), s. 726-736 2391-5447 http://hdl.handle.net/20.500.12128/17904 doi:10.1515/geo-2020-0182 |
op_rights |
Uznanie autorstwa 3.0 Polska http://creativecommons.org/licenses/by/3.0/pl/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.12128/17904 https://doi.org/10.1515/geo-2020-0182 |
container_title |
Open Geosciences |
container_volume |
12 |
container_issue |
1 |
container_start_page |
726 |
op_container_end_page |
736 |
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1766030567904641024 |