British Ice Sheet dynamics inferred from North Atlantic ice‐rafted debris records spanning the last 175 000 years
Abstract Sediment core MD04‐2822 from the Rockall Trough, northeast Atlantic, provides lithological evidence for the expansion of the British Ice Sheet (BIS) onto the Hebridean margin during both the penultimate (Marine Isotope Stage (MIS) 6/Wolstonian/Saalian) and last glaciation (Devensian/Weichse...
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crwiley:10.1002/jqs.1331 2024-06-23T07:47:13+00:00 British Ice Sheet dynamics inferred from North Atlantic ice‐rafted debris records spanning the last 175 000 years Hibbert, Fiona D. Austin, William E. N. Leng, Melanie J. Gatliff, Robert W. British Geological Survey University of St Andrews 2009 http://dx.doi.org/10.1002/jqs.1331 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1331 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1331 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 25, issue 4, page 461-482 ISSN 0267-8179 1099-1417 journal-article 2009 crwiley https://doi.org/10.1002/jqs.1331 2024-06-04T06:45:40Z Abstract Sediment core MD04‐2822 from the Rockall Trough, northeast Atlantic, provides lithological evidence for the expansion of the British Ice Sheet (BIS) onto the Hebridean margin during both the penultimate (Marine Isotope Stage (MIS) 6/Wolstonian/Saalian) and last glaciation (Devensian/Weichselian). A composite chronology is constructed using: (i) the benthic foraminiferal oxygen isotope record, matched to an orbitally tuned stacked record of global ice volume (SPECMAP); (ii) the synchronisation of the planktonic foraminiferal ( Neogloboquadrina pachyderma (sinistral)) and ITRAX XRF Ca records to the Greenland ice core (NGRIP) back to ca. 123 ka; and (iii) the synchronisation of the same N. pachyderma (sinistral)) and ITRAX XRF Ca records to the atmospheric methane record of the Antarctic ice core (EPICA Dome C) beyond 123 ka. The first offshore evidence for the expansion of the last BIS within MIS 4 is presented, suggesting extensive glaciation of northwestern Britain during the Devensian/Weichselian as early as 70 ka. The proximity of this long sediment core to the glaciated margin of northwestern Scotland makes it ideal to capture the ice‐rafted debris (IRD) signal of the BIS for the last 175 ka, via a continuous flux record of IRD. British Geological Survey © NERC 2009. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic EPICA Greenland Greenland ice core ice core Ice Sheet Neogloboquadrina pachyderma NGRIP North Atlantic Northeast Atlantic Wiley Online Library Antarctic Greenland Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) The Antarctic Journal of Quaternary Science 25 4 461 482 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Sediment core MD04‐2822 from the Rockall Trough, northeast Atlantic, provides lithological evidence for the expansion of the British Ice Sheet (BIS) onto the Hebridean margin during both the penultimate (Marine Isotope Stage (MIS) 6/Wolstonian/Saalian) and last glaciation (Devensian/Weichselian). A composite chronology is constructed using: (i) the benthic foraminiferal oxygen isotope record, matched to an orbitally tuned stacked record of global ice volume (SPECMAP); (ii) the synchronisation of the planktonic foraminiferal ( Neogloboquadrina pachyderma (sinistral)) and ITRAX XRF Ca records to the Greenland ice core (NGRIP) back to ca. 123 ka; and (iii) the synchronisation of the same N. pachyderma (sinistral)) and ITRAX XRF Ca records to the atmospheric methane record of the Antarctic ice core (EPICA Dome C) beyond 123 ka. The first offshore evidence for the expansion of the last BIS within MIS 4 is presented, suggesting extensive glaciation of northwestern Britain during the Devensian/Weichselian as early as 70 ka. The proximity of this long sediment core to the glaciated margin of northwestern Scotland makes it ideal to capture the ice‐rafted debris (IRD) signal of the BIS for the last 175 ka, via a continuous flux record of IRD. British Geological Survey © NERC 2009. All rights reserved. |
author2 |
British Geological Survey University of St Andrews |
format |
Article in Journal/Newspaper |
author |
Hibbert, Fiona D. Austin, William E. N. Leng, Melanie J. Gatliff, Robert W. |
spellingShingle |
Hibbert, Fiona D. Austin, William E. N. Leng, Melanie J. Gatliff, Robert W. British Ice Sheet dynamics inferred from North Atlantic ice‐rafted debris records spanning the last 175 000 years |
author_facet |
Hibbert, Fiona D. Austin, William E. N. Leng, Melanie J. Gatliff, Robert W. |
author_sort |
Hibbert, Fiona D. |
title |
British Ice Sheet dynamics inferred from North Atlantic ice‐rafted debris records spanning the last 175 000 years |
title_short |
British Ice Sheet dynamics inferred from North Atlantic ice‐rafted debris records spanning the last 175 000 years |
title_full |
British Ice Sheet dynamics inferred from North Atlantic ice‐rafted debris records spanning the last 175 000 years |
title_fullStr |
British Ice Sheet dynamics inferred from North Atlantic ice‐rafted debris records spanning the last 175 000 years |
title_full_unstemmed |
British Ice Sheet dynamics inferred from North Atlantic ice‐rafted debris records spanning the last 175 000 years |
title_sort |
british ice sheet dynamics inferred from north atlantic ice‐rafted debris records spanning the last 175 000 years |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/jqs.1331 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1331 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1331 |
long_lat |
ENVELOPE(-15.036,-15.036,53.825,53.825) |
geographic |
Antarctic Greenland Rockall Trough The Antarctic |
geographic_facet |
Antarctic Greenland Rockall Trough The Antarctic |
genre |
Antarc* Antarctic EPICA Greenland Greenland ice core ice core Ice Sheet Neogloboquadrina pachyderma NGRIP North Atlantic Northeast Atlantic |
genre_facet |
Antarc* Antarctic EPICA Greenland Greenland ice core ice core Ice Sheet Neogloboquadrina pachyderma NGRIP North Atlantic Northeast Atlantic |
op_source |
Journal of Quaternary Science volume 25, issue 4, page 461-482 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1331 |
container_title |
Journal of Quaternary Science |
container_volume |
25 |
container_issue |
4 |
container_start_page |
461 |
op_container_end_page |
482 |
_version_ |
1802651303780810752 |