Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen
Abstract The Ebbabreen ice−cored moraine area is covered with a sediment layer of up to 2.5 m thick, which mostly consists of massive diamicton. Due to undercutting by lateral streams, debris flow processes have been induced in marginal parts of this moraine. It was recognized that the sedimentology...
Published in: | Polish Polar Research |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Walter de Gruyter GmbH
2015
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1515/popore-2015-0006 http://content.sciendo.com/view/journals/popore/36/2/article-p125.xml https://www.degruyter.com/view/j/popore.2015.36.issue-2/popore-2015-0006/popore-2015-0006.pdf |
id |
crdegruyter:10.1515/popore-2015-0006 |
---|---|
record_format |
openpolar |
spelling |
crdegruyter:10.1515/popore-2015-0006 2024-06-23T07:56:19+00:00 Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen Pleskot, Krzysztof 2015 http://dx.doi.org/10.1515/popore-2015-0006 http://content.sciendo.com/view/journals/popore/36/2/article-p125.xml https://www.degruyter.com/view/j/popore.2015.36.issue-2/popore-2015-0006/popore-2015-0006.pdf unknown Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0/ Polish Polar Research volume 36, issue 2, page 125-144 ISSN 2081-8262 journal-article 2015 crdegruyter https://doi.org/10.1515/popore-2015-0006 2024-06-04T05:47:57Z Abstract The Ebbabreen ice−cored moraine area is covered with a sediment layer of up to 2.5 m thick, which mostly consists of massive diamicton. Due to undercutting by lateral streams, debris flow processes have been induced in marginal parts of this moraine. It was recognized that the sedimentology of deposits within the deposition area of debris flows is the effect of: (1) the origin of the sediments, (2) the nature of the debris flow, and (3) post−debris flow reworking. Analysis of debris flow deposits in microscale (thin sections) suggests a common mixing during flow, even though a small amount of parent material kept its original structure. The mixing of sediments during flow leads to them having similar sedimentary characteristics across the deposition area regardless of local conditions (i.e. slope angle, water content, parent material lithology). After the deposition of sediments that were transported by the debris flow, they were then reworked by a further redeposition process, primarily related to meltwater stream action. Article in Journal/Newspaper Polar Research Spitsbergen De Gruyter Ebbabreen ENVELOPE(16.800,16.800,78.700,78.700) Polish Polar Research 36 2 125 144 |
institution |
Open Polar |
collection |
De Gruyter |
op_collection_id |
crdegruyter |
language |
unknown |
description |
Abstract The Ebbabreen ice−cored moraine area is covered with a sediment layer of up to 2.5 m thick, which mostly consists of massive diamicton. Due to undercutting by lateral streams, debris flow processes have been induced in marginal parts of this moraine. It was recognized that the sedimentology of deposits within the deposition area of debris flows is the effect of: (1) the origin of the sediments, (2) the nature of the debris flow, and (3) post−debris flow reworking. Analysis of debris flow deposits in microscale (thin sections) suggests a common mixing during flow, even though a small amount of parent material kept its original structure. The mixing of sediments during flow leads to them having similar sedimentary characteristics across the deposition area regardless of local conditions (i.e. slope angle, water content, parent material lithology). After the deposition of sediments that were transported by the debris flow, they were then reworked by a further redeposition process, primarily related to meltwater stream action. |
format |
Article in Journal/Newspaper |
author |
Pleskot, Krzysztof |
spellingShingle |
Pleskot, Krzysztof Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen |
author_facet |
Pleskot, Krzysztof |
author_sort |
Pleskot, Krzysztof |
title |
Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen |
title_short |
Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen |
title_full |
Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen |
title_fullStr |
Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen |
title_full_unstemmed |
Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen |
title_sort |
sedimentological characteristics of debris flow deposits within ice−cored moraine of ebbabreen, central spitsbergen |
publisher |
Walter de Gruyter GmbH |
publishDate |
2015 |
url |
http://dx.doi.org/10.1515/popore-2015-0006 http://content.sciendo.com/view/journals/popore/36/2/article-p125.xml https://www.degruyter.com/view/j/popore.2015.36.issue-2/popore-2015-0006/popore-2015-0006.pdf |
long_lat |
ENVELOPE(16.800,16.800,78.700,78.700) |
geographic |
Ebbabreen |
geographic_facet |
Ebbabreen |
genre |
Polar Research Spitsbergen |
genre_facet |
Polar Research Spitsbergen |
op_source |
Polish Polar Research volume 36, issue 2, page 125-144 ISSN 2081-8262 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_doi |
https://doi.org/10.1515/popore-2015-0006 |
container_title |
Polish Polar Research |
container_volume |
36 |
container_issue |
2 |
container_start_page |
125 |
op_container_end_page |
144 |
_version_ |
1802649340495265792 |