Pattern and timing of retreat of the last British-Irish Ice Sheet
During the last glacial the ice sheet that subsumed most of Britain, Ireland and the North Sea attained its maximum extent by 27 ka BP and with an ice volume sufficient to raise global sea level by ca 2.5 m when it melted. We reconstruct the demise of this British-Irish Ice Sheet (BIIS) and present...
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2012
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Online Access: | https://research.manchester.ac.uk/en/publications/3ee382eb-7f82-43ea-9f33-c94c4d061573 https://doi.org/10.1016/j.quascirev.2010.07.019 http://www.scopus.com/inward/record.url?scp=84862004977&partnerID=8YFLogxK http://eprints.whiterose.ac.uk/83510/ |
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ftumanchesterpub:oai:pure.atira.dk:publications/3ee382eb-7f82-43ea-9f33-c94c4d061573 2024-05-12T08:05:18+00:00 Pattern and timing of retreat of the last British-Irish Ice Sheet Clark, Chris D. Hughes, Anna L.C. Greenwood, Sarah L. Jordan, Colm Sejrup, Hans Petter 2012-06-21 https://research.manchester.ac.uk/en/publications/3ee382eb-7f82-43ea-9f33-c94c4d061573 https://doi.org/10.1016/j.quascirev.2010.07.019 http://www.scopus.com/inward/record.url?scp=84862004977&partnerID=8YFLogxK http://eprints.whiterose.ac.uk/83510/ eng eng https://research.manchester.ac.uk/en/publications/3ee382eb-7f82-43ea-9f33-c94c4d061573 info:eu-repo/semantics/openAccess Clark , C D , Hughes , A L C , Greenwood , S L , Jordan , C & Sejrup , H P 2012 , ' Pattern and timing of retreat of the last British-Irish Ice Sheet ' , Quaternary Science Reviews , vol. 44 , pp. 112-146 . https://doi.org/10.1016/j.quascirev.2010.07.019 article 2012 ftumanchesterpub https://doi.org/10.1016/j.quascirev.2010.07.019 2024-04-15T00:00:24Z During the last glacial the ice sheet that subsumed most of Britain, Ireland and the North Sea attained its maximum extent by 27 ka BP and with an ice volume sufficient to raise global sea level by ca 2.5 m when it melted. We reconstruct the demise of this British-Irish Ice Sheet (BIIS) and present palaeo-glaciological maps of retreat stages between 27 and 15 ka BP. The whole land area was investigated using remote sensing data and we present maps of moraines, meltwater channels, eskers, and drumlins and a methodology of how to interpret and bring them together. For the continental shelf, numerous large moraines were discovered recording an extensive pattern of retreat stretching from SW Ireland to the Shetland Isles. From an integration of this new mapping of glacial geomorphology (>26,000 landforms) with previously published evidence, compiled in the BRITICE database, we derive a pattern of retreat for the whole BIIS. We review and compile relevant dates (881 examples) that constrain the timing of retreat. All data are held within a Geographic Information System (GIS), and are deciphered to produce a best-estimate of the combined pattern and timing of retreat.Pattern information reveals an ice sheet mainly comprised of a shelf-parallel configuration from SW Ireland to NE Scotland but it spread far enough to the south to incorporate outlying ice domes over Wales, the Lake District and Kerry. Final disintegration was into a number of separate ice caps, rather than reduction as a single mass, and paradoxically, retreat was not always back to high ground. By 23 ka BP ice withdrew along its northern boundaries at the same time as the southern margins were expanding, including transient ice streaming down the Irish Sea and advances of lobes in the Cheshire Basin, Vale of York and east coast of England. Ice divides migrated south. By 19 ka the ice sheet was in crisis with widespread marine-based ice losses, particularly in the northern North Sea and the Irish Sea. Considerable dynamic-thinning occurred during this ... Article in Journal/Newspaper Ice Sheet The University of Manchester: Research Explorer Quaternary Science Reviews 44 112 146 |
institution |
Open Polar |
collection |
The University of Manchester: Research Explorer |
op_collection_id |
ftumanchesterpub |
language |
English |
description |
During the last glacial the ice sheet that subsumed most of Britain, Ireland and the North Sea attained its maximum extent by 27 ka BP and with an ice volume sufficient to raise global sea level by ca 2.5 m when it melted. We reconstruct the demise of this British-Irish Ice Sheet (BIIS) and present palaeo-glaciological maps of retreat stages between 27 and 15 ka BP. The whole land area was investigated using remote sensing data and we present maps of moraines, meltwater channels, eskers, and drumlins and a methodology of how to interpret and bring them together. For the continental shelf, numerous large moraines were discovered recording an extensive pattern of retreat stretching from SW Ireland to the Shetland Isles. From an integration of this new mapping of glacial geomorphology (>26,000 landforms) with previously published evidence, compiled in the BRITICE database, we derive a pattern of retreat for the whole BIIS. We review and compile relevant dates (881 examples) that constrain the timing of retreat. All data are held within a Geographic Information System (GIS), and are deciphered to produce a best-estimate of the combined pattern and timing of retreat.Pattern information reveals an ice sheet mainly comprised of a shelf-parallel configuration from SW Ireland to NE Scotland but it spread far enough to the south to incorporate outlying ice domes over Wales, the Lake District and Kerry. Final disintegration was into a number of separate ice caps, rather than reduction as a single mass, and paradoxically, retreat was not always back to high ground. By 23 ka BP ice withdrew along its northern boundaries at the same time as the southern margins were expanding, including transient ice streaming down the Irish Sea and advances of lobes in the Cheshire Basin, Vale of York and east coast of England. Ice divides migrated south. By 19 ka the ice sheet was in crisis with widespread marine-based ice losses, particularly in the northern North Sea and the Irish Sea. Considerable dynamic-thinning occurred during this ... |
format |
Article in Journal/Newspaper |
author |
Clark, Chris D. Hughes, Anna L.C. Greenwood, Sarah L. Jordan, Colm Sejrup, Hans Petter |
spellingShingle |
Clark, Chris D. Hughes, Anna L.C. Greenwood, Sarah L. Jordan, Colm Sejrup, Hans Petter Pattern and timing of retreat of the last British-Irish Ice Sheet |
author_facet |
Clark, Chris D. Hughes, Anna L.C. Greenwood, Sarah L. Jordan, Colm Sejrup, Hans Petter |
author_sort |
Clark, Chris D. |
title |
Pattern and timing of retreat of the last British-Irish Ice Sheet |
title_short |
Pattern and timing of retreat of the last British-Irish Ice Sheet |
title_full |
Pattern and timing of retreat of the last British-Irish Ice Sheet |
title_fullStr |
Pattern and timing of retreat of the last British-Irish Ice Sheet |
title_full_unstemmed |
Pattern and timing of retreat of the last British-Irish Ice Sheet |
title_sort |
pattern and timing of retreat of the last british-irish ice sheet |
publishDate |
2012 |
url |
https://research.manchester.ac.uk/en/publications/3ee382eb-7f82-43ea-9f33-c94c4d061573 https://doi.org/10.1016/j.quascirev.2010.07.019 http://www.scopus.com/inward/record.url?scp=84862004977&partnerID=8YFLogxK http://eprints.whiterose.ac.uk/83510/ |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Clark , C D , Hughes , A L C , Greenwood , S L , Jordan , C & Sejrup , H P 2012 , ' Pattern and timing of retreat of the last British-Irish Ice Sheet ' , Quaternary Science Reviews , vol. 44 , pp. 112-146 . https://doi.org/10.1016/j.quascirev.2010.07.019 |
op_relation |
https://research.manchester.ac.uk/en/publications/3ee382eb-7f82-43ea-9f33-c94c4d061573 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2010.07.019 |
container_title |
Quaternary Science Reviews |
container_volume |
44 |
container_start_page |
112 |
op_container_end_page |
146 |
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1798847577989316608 |