British Ice Sheet dynamics inferred from North Atlantic ice-rafted debris records spanning the last 175 000 years
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...
Published in: | Journal of Quaternary Science |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2010
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/british-ice-sheet-dynamics-inferred-from-north-atlantic-icerafted-debris-records-spanning-the-last-175-000-years(35cd371b-0bb3-4916-9347-3678b37fdbf4).html https://doi.org/10.1002/jqs.1331 http://www.scopus.com/inward/record.url?scp=77955639749&partnerID=8YFLogxK |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/35cd371b-0bb3-4916-9347-3678b37fdbf4 2023-05-15T13:53:11+02:00 British Ice Sheet dynamics inferred from North Atlantic ice-rafted debris records spanning the last 175 000 years Hibbert, Fiona D. Austin, William Edward Newns Lenc, Melanie J. Gatliff, Robert W. 2010-05 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/british-ice-sheet-dynamics-inferred-from-north-atlantic-icerafted-debris-records-spanning-the-last-175-000-years(35cd371b-0bb3-4916-9347-3678b37fdbf4).html https://doi.org/10.1002/jqs.1331 http://www.scopus.com/inward/record.url?scp=77955639749&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Hibbert , F D , Austin , W E N , Lenc , M J & Gatliff , R W 2010 , ' British Ice Sheet dynamics inferred from North Atlantic ice-rafted debris records spanning the last 175 000 years ' , Journal of Quaternary Science , vol. 25 , no. 4 , pp. 461-482 . https://doi.org/10.1002/jqs.1331 British Ice Sheet ice-rafted debris (IRD) northeast Atlantic chronostratigraphy benthic and planktonic foraminifera PAST 800,000 YEARS SEA-LEVEL CHANGE HEINRICH EVENTS GLACIAL MAXIMUM CLIMATE-CHANGE BARRA-FAN INTERGLACIAL PERIOD ICEBERG DISCHARGES RAPID CHANGES THERMOHALINE CIRCULATION article 2010 ftunstandrewcris https://doi.org/10.1002/jqs.1331 2022-06-02T07:39:42Z 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 (C) NERC 2009. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic EPICA Greenland Greenland ice core ice core Ice Sheet Iceberg* Neogloboquadrina pachyderma NGRIP North Atlantic Northeast Atlantic Planktonic foraminifera University of St Andrews: Research Portal Antarctic Barra ENVELOPE(-61.417,-61.417,-64.367,-64.367) Greenland Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) The Antarctic Journal of Quaternary Science 25 4 461 482 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
British Ice Sheet ice-rafted debris (IRD) northeast Atlantic chronostratigraphy benthic and planktonic foraminifera PAST 800,000 YEARS SEA-LEVEL CHANGE HEINRICH EVENTS GLACIAL MAXIMUM CLIMATE-CHANGE BARRA-FAN INTERGLACIAL PERIOD ICEBERG DISCHARGES RAPID CHANGES THERMOHALINE CIRCULATION |
spellingShingle |
British Ice Sheet ice-rafted debris (IRD) northeast Atlantic chronostratigraphy benthic and planktonic foraminifera PAST 800,000 YEARS SEA-LEVEL CHANGE HEINRICH EVENTS GLACIAL MAXIMUM CLIMATE-CHANGE BARRA-FAN INTERGLACIAL PERIOD ICEBERG DISCHARGES RAPID CHANGES THERMOHALINE CIRCULATION Hibbert, Fiona D. Austin, William Edward Newns Lenc, Melanie J. Gatliff, Robert W. British Ice Sheet dynamics inferred from North Atlantic ice-rafted debris records spanning the last 175 000 years |
topic_facet |
British Ice Sheet ice-rafted debris (IRD) northeast Atlantic chronostratigraphy benthic and planktonic foraminifera PAST 800,000 YEARS SEA-LEVEL CHANGE HEINRICH EVENTS GLACIAL MAXIMUM CLIMATE-CHANGE BARRA-FAN INTERGLACIAL PERIOD ICEBERG DISCHARGES RAPID CHANGES THERMOHALINE CIRCULATION |
description |
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 (C) NERC 2009. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Hibbert, Fiona D. Austin, William Edward Newns Lenc, Melanie J. Gatliff, Robert W. |
author_facet |
Hibbert, Fiona D. Austin, William Edward Newns Lenc, 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 |
publishDate |
2010 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/british-ice-sheet-dynamics-inferred-from-north-atlantic-icerafted-debris-records-spanning-the-last-175-000-years(35cd371b-0bb3-4916-9347-3678b37fdbf4).html https://doi.org/10.1002/jqs.1331 http://www.scopus.com/inward/record.url?scp=77955639749&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-61.417,-61.417,-64.367,-64.367) ENVELOPE(-15.036,-15.036,53.825,53.825) |
geographic |
Antarctic Barra Greenland Rockall Trough The Antarctic |
geographic_facet |
Antarctic Barra Greenland Rockall Trough The Antarctic |
genre |
Antarc* Antarctic EPICA Greenland Greenland ice core ice core Ice Sheet Iceberg* Neogloboquadrina pachyderma NGRIP North Atlantic Northeast Atlantic Planktonic foraminifera |
genre_facet |
Antarc* Antarctic EPICA Greenland Greenland ice core ice core Ice Sheet Iceberg* Neogloboquadrina pachyderma NGRIP North Atlantic Northeast Atlantic Planktonic foraminifera |
op_source |
Hibbert , F D , Austin , W E N , Lenc , M J & Gatliff , R W 2010 , ' British Ice Sheet dynamics inferred from North Atlantic ice-rafted debris records spanning the last 175 000 years ' , Journal of Quaternary Science , vol. 25 , no. 4 , pp. 461-482 . https://doi.org/10.1002/jqs.1331 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
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_ |
1766258153406595072 |