Complex kame belt morphology, stratigraphy and architecture
The development of glacier karst at the margins of melting ice sheets produces complex glaciofluvial sediment-landform assemblages that provide information on ice sheet downwasting processes. We present the first combined geomorphological, sedimentological and geophysical investigation of the Brampt...
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Online Access: | https://shura.shu.ac.uk/24768/1/Lovell%20et%20al.%20%282019%29%20ESPL%20%28accepted%20manuscript%29.pdf https://doi.org/10.1002/esp.4696 |
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ftsheffhu:oai:shura.shu.ac.uk:24768 2023-05-15T16:40:27+02:00 Complex kame belt morphology, stratigraphy and architecture Lovell, Harold Livingstone, Stephen Boston, Clare Booth, Adam Storrar, Robert Barr, Lestyn 2019-06-30 application/pdf https://shura.shu.ac.uk/24768/1/Lovell%20et%20al.%20%282019%29%20ESPL%20%28accepted%20manuscript%29.pdf https://doi.org/10.1002/esp.4696 en eng Wiley http://shura.shu.ac.uk/24768/ https://onlinelibrary.wiley.com/doi/abs/10.1002/esp.4696 10.1002/esp.4696 https://shura.shu.ac.uk/24768/1/Lovell%20et%20al.%20%282019%29%20ESPL%20%28accepted%20manuscript%29.pdf LOVELL, Harold, LIVINGSTONE, Stephen, BOSTON, Clare, BOOTH, Adam, STORRAR, Robert and BARR, Lestyn (2019). Complex kame belt morphology, stratigraphy and architecture. Earth Surface Processes and Landforms, 44 (13), 2685-2702. doi:10.1002/esp.4696 arr Article PeerReviewed 2019 ftsheffhu https://doi.org/10.1002/esp.4696 2023-03-26T20:29:37Z The development of glacier karst at the margins of melting ice sheets produces complex glaciofluvial sediment-landform assemblages that provide information on ice sheet downwasting processes. We present the first combined geomorphological, sedimentological and geophysical investigation of the Brampton Kame Belt, an important glaciofluvial depositional zone at the centre of the last British-Irish Ice Sheet. Ground-penetrating radar (GPR) data allow the broad scale internal architecture of ridges (eskers) and flat-topped hills (ice-walled lake plains) to be determined at four sites. In combination with sediment exposures, these provide information on lateral and vertical variations in accretion styles, depositional boundaries, and grain size changes. Building on existing work on the subject, we propose a refined model for the formation of ice-walled lake plains resulting from the evolution and collapse of major drainage axes into lakes as stable glacier karst develops during deglaciation. The internal structure of esker ridges demonstrates variations in sedimentation that can be linked to differences in ridge morphologies across the kame belt. This includes low energy flow conditions and multiple accretion phases identified within large S-N oriented esker ridges; and fluctuating water pressures, hyperconcentrated flows, and significant deformation within a fragmented SW-NE oriented esker ridge. In combination with updated geomorphological mapping, this work allows us to identify two main styles of drainage within the kame belt: (1) major drainage axes aligned broadly S-N that extend through the entire kame belt and collapsed into a chain of icewalled lakes; and (2) a series of smaller, fragmented SW-NE aligned esker ridges that represent ice-marginal drainage as the ice sheet receded south-eastwards up the Vale of Eden. Our study demonstrates the importance of integrated geomorphological, sedimentological and geophysical investigations in order to understand complex and polyphase glaciofluvial sediment-landform ... Article in Journal/Newspaper Ice Sheet SHURA (Sheffield Hallam University Research Archive) Earth Surface Processes and Landforms 44 13 2685 2702 |
institution |
Open Polar |
collection |
SHURA (Sheffield Hallam University Research Archive) |
op_collection_id |
ftsheffhu |
language |
English |
description |
The development of glacier karst at the margins of melting ice sheets produces complex glaciofluvial sediment-landform assemblages that provide information on ice sheet downwasting processes. We present the first combined geomorphological, sedimentological and geophysical investigation of the Brampton Kame Belt, an important glaciofluvial depositional zone at the centre of the last British-Irish Ice Sheet. Ground-penetrating radar (GPR) data allow the broad scale internal architecture of ridges (eskers) and flat-topped hills (ice-walled lake plains) to be determined at four sites. In combination with sediment exposures, these provide information on lateral and vertical variations in accretion styles, depositional boundaries, and grain size changes. Building on existing work on the subject, we propose a refined model for the formation of ice-walled lake plains resulting from the evolution and collapse of major drainage axes into lakes as stable glacier karst develops during deglaciation. The internal structure of esker ridges demonstrates variations in sedimentation that can be linked to differences in ridge morphologies across the kame belt. This includes low energy flow conditions and multiple accretion phases identified within large S-N oriented esker ridges; and fluctuating water pressures, hyperconcentrated flows, and significant deformation within a fragmented SW-NE oriented esker ridge. In combination with updated geomorphological mapping, this work allows us to identify two main styles of drainage within the kame belt: (1) major drainage axes aligned broadly S-N that extend through the entire kame belt and collapsed into a chain of icewalled lakes; and (2) a series of smaller, fragmented SW-NE aligned esker ridges that represent ice-marginal drainage as the ice sheet receded south-eastwards up the Vale of Eden. Our study demonstrates the importance of integrated geomorphological, sedimentological and geophysical investigations in order to understand complex and polyphase glaciofluvial sediment-landform ... |
format |
Article in Journal/Newspaper |
author |
Lovell, Harold Livingstone, Stephen Boston, Clare Booth, Adam Storrar, Robert Barr, Lestyn |
spellingShingle |
Lovell, Harold Livingstone, Stephen Boston, Clare Booth, Adam Storrar, Robert Barr, Lestyn Complex kame belt morphology, stratigraphy and architecture |
author_facet |
Lovell, Harold Livingstone, Stephen Boston, Clare Booth, Adam Storrar, Robert Barr, Lestyn |
author_sort |
Lovell, Harold |
title |
Complex kame belt morphology, stratigraphy and architecture |
title_short |
Complex kame belt morphology, stratigraphy and architecture |
title_full |
Complex kame belt morphology, stratigraphy and architecture |
title_fullStr |
Complex kame belt morphology, stratigraphy and architecture |
title_full_unstemmed |
Complex kame belt morphology, stratigraphy and architecture |
title_sort |
complex kame belt morphology, stratigraphy and architecture |
publisher |
Wiley |
publishDate |
2019 |
url |
https://shura.shu.ac.uk/24768/1/Lovell%20et%20al.%20%282019%29%20ESPL%20%28accepted%20manuscript%29.pdf https://doi.org/10.1002/esp.4696 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
http://shura.shu.ac.uk/24768/ https://onlinelibrary.wiley.com/doi/abs/10.1002/esp.4696 10.1002/esp.4696 https://shura.shu.ac.uk/24768/1/Lovell%20et%20al.%20%282019%29%20ESPL%20%28accepted%20manuscript%29.pdf LOVELL, Harold, LIVINGSTONE, Stephen, BOSTON, Clare, BOOTH, Adam, STORRAR, Robert and BARR, Lestyn (2019). Complex kame belt morphology, stratigraphy and architecture. Earth Surface Processes and Landforms, 44 (13), 2685-2702. doi:10.1002/esp.4696 |
op_rights |
arr |
op_doi |
https://doi.org/10.1002/esp.4696 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
44 |
container_issue |
13 |
container_start_page |
2685 |
op_container_end_page |
2702 |
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1766030844885991424 |