Deforming bed conditions on the Dánischer Wohld Peninsula, northern Germany
At the Dänischer Wohld Peninsula coastal sections (North West Germany), subglacial deformation was found at three scales. At the smallest scale, features typical of deforming bed tills were found, i.e. small boudins, tectonic laminations and low fabric strength till. At an intermediate scale, large...
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crwiley:10.1111/j.1502-3885.1996.tb00839.x 2024-09-15T18:12:27+00:00 Deforming bed conditions on the Dánischer Wohld Peninsula, northern Germany HART, JANE K. CANE, FIONA WATTS, ROBERT J. 1996 http://dx.doi.org/10.1111/j.1502-3885.1996.tb00839.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1996.tb00839.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1996.tb00839.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 25, issue 2, page 101-114 ISSN 0300-9483 1502-3885 journal-article 1996 crwiley https://doi.org/10.1111/j.1502-3885.1996.tb00839.x 2024-07-25T04:19:51Z At the Dänischer Wohld Peninsula coastal sections (North West Germany), subglacial deformation was found at three scales. At the smallest scale, features typical of deforming bed tills were found, i.e. small boudins, tectonic laminations and low fabric strength till. At an intermediate scale, large lenses of glaciolacustrine sediments were found within subglacially deformed till. At the largest scale, there were large (over 5 m high) subglacial folds. We suggest that these styles of sedimentation/deformation were associated with a series of readvances during overall glacial retreat: subglacial deformation occurred during each advance and glaciolacus trine sedimentation occurred during each retreat. This led to glaciolacustrine sediments and deforming bed tills being folded together during subsequent readvances. Where the rheology was relatively weak, the lacustrine sediments were totally incorporated into the diamicton and lost their previous identity. However, where the glaciolacustrine sediments were relatively strong, they survived. We suggest that this style of deformation is typical of the conditions just upglacier from the ice margin and is associated with a relatively thick deforming layer and a high input of subglacial sediment. We conclude that the evidence found at this site provides further indications that the southern margins of the Fenno‐Scandinavian ice sheet were coupled with the glacier bed and underwent deforming bed conditions. Article in Journal/Newspaper Ice Sheet Wiley Online Library Boreas 25 2 101 114 |
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Wiley Online Library |
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English |
description |
At the Dänischer Wohld Peninsula coastal sections (North West Germany), subglacial deformation was found at three scales. At the smallest scale, features typical of deforming bed tills were found, i.e. small boudins, tectonic laminations and low fabric strength till. At an intermediate scale, large lenses of glaciolacustrine sediments were found within subglacially deformed till. At the largest scale, there were large (over 5 m high) subglacial folds. We suggest that these styles of sedimentation/deformation were associated with a series of readvances during overall glacial retreat: subglacial deformation occurred during each advance and glaciolacus trine sedimentation occurred during each retreat. This led to glaciolacustrine sediments and deforming bed tills being folded together during subsequent readvances. Where the rheology was relatively weak, the lacustrine sediments were totally incorporated into the diamicton and lost their previous identity. However, where the glaciolacustrine sediments were relatively strong, they survived. We suggest that this style of deformation is typical of the conditions just upglacier from the ice margin and is associated with a relatively thick deforming layer and a high input of subglacial sediment. We conclude that the evidence found at this site provides further indications that the southern margins of the Fenno‐Scandinavian ice sheet were coupled with the glacier bed and underwent deforming bed conditions. |
format |
Article in Journal/Newspaper |
author |
HART, JANE K. CANE, FIONA WATTS, ROBERT J. |
spellingShingle |
HART, JANE K. CANE, FIONA WATTS, ROBERT J. Deforming bed conditions on the Dánischer Wohld Peninsula, northern Germany |
author_facet |
HART, JANE K. CANE, FIONA WATTS, ROBERT J. |
author_sort |
HART, JANE K. |
title |
Deforming bed conditions on the Dánischer Wohld Peninsula, northern Germany |
title_short |
Deforming bed conditions on the Dánischer Wohld Peninsula, northern Germany |
title_full |
Deforming bed conditions on the Dánischer Wohld Peninsula, northern Germany |
title_fullStr |
Deforming bed conditions on the Dánischer Wohld Peninsula, northern Germany |
title_full_unstemmed |
Deforming bed conditions on the Dánischer Wohld Peninsula, northern Germany |
title_sort |
deforming bed conditions on the dánischer wohld peninsula, northern germany |
publisher |
Wiley |
publishDate |
1996 |
url |
http://dx.doi.org/10.1111/j.1502-3885.1996.tb00839.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1996.tb00839.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1996.tb00839.x |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Boreas volume 25, issue 2, page 101-114 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.1996.tb00839.x |
container_title |
Boreas |
container_volume |
25 |
container_issue |
2 |
container_start_page |
101 |
op_container_end_page |
114 |
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1810450041030049792 |