Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector
The offshore sector around Shetland remains one of the least well‐studied parts of the former British–Irish Ice Sheet with several long‐standing scientific issues unresolved. These key issues include (i) the dominance of a locally sourced ‘Shetland ice cap’ vs an invasive Fennoscandian Ice Sheet; (i...
Published in: | Journal of Quaternary Science |
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Main Authors: | , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Wiley
2021
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Subjects: | |
Online Access: | http://hdl.handle.net/1893/30503 https://doi.org/10.1002/jqs.3163 http://dspace.stir.ac.uk/bitstream/1893/30503/1/jqs.3163.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/30503 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
continental shelf deglaciation geochronology ice sheet Pleistocene |
spellingShingle |
continental shelf deglaciation geochronology ice sheet Pleistocene Bradwell, Tom Small, David Fabel, Derek Clark, Chris D Chiverrell, Richard C Saher, Margot H Dove, Dayton Callard, S Louise Burke, Matthew J Moreton, Steven G Medialdea, Alicia Bateman, Mark D Roberts, David H Golledge, Nicholas R Finlayson, Andrew Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector |
topic_facet |
continental shelf deglaciation geochronology ice sheet Pleistocene |
description |
The offshore sector around Shetland remains one of the least well‐studied parts of the former British–Irish Ice Sheet with several long‐standing scientific issues unresolved. These key issues include (i) the dominance of a locally sourced ‘Shetland ice cap’ vs an invasive Fennoscandian Ice Sheet; (ii) the flow configuration and style of glaciation at the Last Glacial Maximum (i.e. terrestrial vs marine glaciation); (iii) the nature of confluence between the British–Irish and Fennoscandian Ice Sheets; (iv) the cause, style and rate of ice sheet separation; and (v) the wider implications of ice sheet uncoupling on the tempo of subsequent deglaciation. As part of the Britice‐Chrono project, we present new geological (seabed cores), geomorphological, marine geophysical and geochronological data from the northernmost sector of the last British–Irish Ice Sheet (north of 59.5°N) to address these questions. The study area covers ca. 95 000 km2, an area approximately the size of Ireland, and includes the islands of Shetland and the surrounding continental shelf, some of the continental slope, and the western margin of the Norwegian Channel. We collect and analyse data from onshore in Shetland and along key transects offshore, to establish the most coherent picture, so far, of former ice‐sheet deglaciation in this important sector. Alongside new seabed mapping and Quaternary sediment analysis, we use a multi‐proxy suite of new isotopic age assessments, including 32 cosmogenic‐nuclide exposure ages from glacially transported boulders and 35 radiocarbon dates from deglacial marine sediments, to develop a synoptic sector‐wide reconstruction combining strong onshore and offshore geological evidence with Bayesian chronosequence modelling. The results show widespread and significant spatial fluctuations in size, shape and flow configuration of an ice sheet/ice cap centred on, or to the east of, the Orkney–Shetland Platform, between ~30 and ~15 ka BP. At its maximum extent ca. 26–25 ka BP, this ice sheet was coalescent with the ... |
author2 |
Natural Environment Research Council Biological and Environmental Sciences Durham University University of Glasgow University of Sheffield University of Liverpool Bangor University British Geological Survey Newcastle University NERC Radiocarbon Laboratory University of Cologne Victoria University of Wellington orcid:0000-0003-0947-3309 |
format |
Article in Journal/Newspaper |
author |
Bradwell, Tom Small, David Fabel, Derek Clark, Chris D Chiverrell, Richard C Saher, Margot H Dove, Dayton Callard, S Louise Burke, Matthew J Moreton, Steven G Medialdea, Alicia Bateman, Mark D Roberts, David H Golledge, Nicholas R Finlayson, Andrew |
author_facet |
Bradwell, Tom Small, David Fabel, Derek Clark, Chris D Chiverrell, Richard C Saher, Margot H Dove, Dayton Callard, S Louise Burke, Matthew J Moreton, Steven G Medialdea, Alicia Bateman, Mark D Roberts, David H Golledge, Nicholas R Finlayson, Andrew |
author_sort |
Bradwell, Tom |
title |
Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector |
title_short |
Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector |
title_full |
Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector |
title_fullStr |
Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector |
title_full_unstemmed |
Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector |
title_sort |
pattern, style and timing of british-irish ice sheet retreat: shetland and northern north sea sector |
publisher |
Wiley |
publishDate |
2021 |
url |
http://hdl.handle.net/1893/30503 https://doi.org/10.1002/jqs.3163 http://dspace.stir.ac.uk/bitstream/1893/30503/1/jqs.3163.pdf |
genre |
Fennoscandian Ice cap Ice Sheet |
genre_facet |
Fennoscandian Ice cap Ice Sheet |
op_relation |
Bradwell T, Small D, Fabel D, Clark CD, Chiverrell RC, Saher MH, Dove D, Callard SL, Burke MJ, Moreton SG, Medialdea A, Bateman MD, Roberts DH, Golledge NR & Finlayson A (2021) Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector. Journal of Quaternary Science , 36 (5), pp. 681-722. https://doi.org/10.1002/jqs.3163 http://hdl.handle.net/1893/30503 doi:10.1002/jqs.3163 WOS:000497567900001 2-s2.0-85075335271 1489903 http://dspace.stir.ac.uk/bitstream/1893/30503/1/jqs.3163.pdf |
op_rights |
© 2019 The Authors. Journal of Quaternary Science Published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/jqs.3163 |
container_title |
Journal of Quaternary Science |
container_volume |
36 |
container_issue |
5 |
container_start_page |
681 |
op_container_end_page |
722 |
_version_ |
1765998544047570944 |
spelling |
ftunivstirling:oai:dspace.stir.ac.uk:1893/30503 2023-05-15T16:12:56+02:00 Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector Bradwell, Tom Small, David Fabel, Derek Clark, Chris D Chiverrell, Richard C Saher, Margot H Dove, Dayton Callard, S Louise Burke, Matthew J Moreton, Steven G Medialdea, Alicia Bateman, Mark D Roberts, David H Golledge, Nicholas R Finlayson, Andrew Natural Environment Research Council Biological and Environmental Sciences Durham University University of Glasgow University of Sheffield University of Liverpool Bangor University British Geological Survey Newcastle University NERC Radiocarbon Laboratory University of Cologne Victoria University of Wellington orcid:0000-0003-0947-3309 2021-07 application/pdf http://hdl.handle.net/1893/30503 https://doi.org/10.1002/jqs.3163 http://dspace.stir.ac.uk/bitstream/1893/30503/1/jqs.3163.pdf en eng Wiley Bradwell T, Small D, Fabel D, Clark CD, Chiverrell RC, Saher MH, Dove D, Callard SL, Burke MJ, Moreton SG, Medialdea A, Bateman MD, Roberts DH, Golledge NR & Finlayson A (2021) Pattern, style and timing of British-Irish Ice Sheet retreat: Shetland and northern North Sea sector. Journal of Quaternary Science , 36 (5), pp. 681-722. https://doi.org/10.1002/jqs.3163 http://hdl.handle.net/1893/30503 doi:10.1002/jqs.3163 WOS:000497567900001 2-s2.0-85075335271 1489903 http://dspace.stir.ac.uk/bitstream/1893/30503/1/jqs.3163.pdf © 2019 The Authors. Journal of Quaternary Science Published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/ CC-BY continental shelf deglaciation geochronology ice sheet Pleistocene Journal Article VoR - Version of Record 2021 ftunivstirling https://doi.org/10.1002/jqs.3163 2023-02-02T23:17:15Z The offshore sector around Shetland remains one of the least well‐studied parts of the former British–Irish Ice Sheet with several long‐standing scientific issues unresolved. These key issues include (i) the dominance of a locally sourced ‘Shetland ice cap’ vs an invasive Fennoscandian Ice Sheet; (ii) the flow configuration and style of glaciation at the Last Glacial Maximum (i.e. terrestrial vs marine glaciation); (iii) the nature of confluence between the British–Irish and Fennoscandian Ice Sheets; (iv) the cause, style and rate of ice sheet separation; and (v) the wider implications of ice sheet uncoupling on the tempo of subsequent deglaciation. As part of the Britice‐Chrono project, we present new geological (seabed cores), geomorphological, marine geophysical and geochronological data from the northernmost sector of the last British–Irish Ice Sheet (north of 59.5°N) to address these questions. The study area covers ca. 95 000 km2, an area approximately the size of Ireland, and includes the islands of Shetland and the surrounding continental shelf, some of the continental slope, and the western margin of the Norwegian Channel. We collect and analyse data from onshore in Shetland and along key transects offshore, to establish the most coherent picture, so far, of former ice‐sheet deglaciation in this important sector. Alongside new seabed mapping and Quaternary sediment analysis, we use a multi‐proxy suite of new isotopic age assessments, including 32 cosmogenic‐nuclide exposure ages from glacially transported boulders and 35 radiocarbon dates from deglacial marine sediments, to develop a synoptic sector‐wide reconstruction combining strong onshore and offshore geological evidence with Bayesian chronosequence modelling. The results show widespread and significant spatial fluctuations in size, shape and flow configuration of an ice sheet/ice cap centred on, or to the east of, the Orkney–Shetland Platform, between ~30 and ~15 ka BP. At its maximum extent ca. 26–25 ka BP, this ice sheet was coalescent with the ... Article in Journal/Newspaper Fennoscandian Ice cap Ice Sheet University of Stirling: Stirling Digital Research Repository Journal of Quaternary Science 36 5 681 722 |