Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic
Ice-rafted tephra deposits, of Marine Isotope Stage 6 (MIS 6) age, from Site U 1304 on the Gardar Drift, North Atlantic were examined for their shard size distribution and major element composition. The heterogeneous composition, large shard sizes and association with ice-rafted debris (IRD) indicat...
Published in: | Geological Society, London, Special Publications |
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Format: | Article in Journal/Newspaper |
Language: | English |
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GEOLOGICAL SOC PUBLISHING HOUSE
2014
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/icebergrafted-tephra-as-a-potential-tool-for-the-reconstruction-of-icesheet-processes-and-ocean-surface-circulation-in-the-glacial-north-atlantic(8336d7f0-3768-4c0f-b0a4-944d9c30e670).html https://doi.org/10.1144/SP398.8 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/8336d7f0-3768-4c0f-b0a4-944d9c30e670 2024-06-23T07:53:47+00:00 Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic Kuhs, Marion Austin, William E. N. Abbott, Peter M. Hodell, David A. Austin, WEN Abbott, PM Davies, SM Pearce, NJG Wastegard, S 2014 https://research-portal.st-andrews.ac.uk/en/researchoutput/icebergrafted-tephra-as-a-potential-tool-for-the-reconstruction-of-icesheet-processes-and-ocean-surface-circulation-in-the-glacial-north-atlantic(8336d7f0-3768-4c0f-b0a4-944d9c30e670).html https://doi.org/10.1144/SP398.8 eng eng GEOLOGICAL SOC PUBLISHING HOUSE https://research-portal.st-andrews.ac.uk/en/researchoutput/icebergrafted-tephra-as-a-potential-tool-for-the-reconstruction-of-icesheet-processes-and-ocean-surface-circulation-in-the-glacial-north-atlantic(8336d7f0-3768-4c0f-b0a4-944d9c30e670).html urn:ISBN:978-1-86239-641-8 info:eu-repo/semantics/restrictedAccess Kuhs , M , Austin , W E N , Abbott , P M & Hodell , D A 2014 , Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic . in WEN Austin , PM Abbott , SM Davies , NJG Pearce & S Wastegard (eds) , MARINE TEPHROCHRONOLOGY . Geological Society Special Publication , vol. 398 , GEOLOGICAL SOC PUBLISHING HOUSE , BATH , pp. 141-155 , Geological Society of London Meeting on Marine Tephrochronology , United Kingdom , 26/10/11 . https://doi.org/10.1144/SP398.8 HEINRICH EVENTS VOLCANIC ASH ICELAND MAXIMUM SEDIMENTS TEPHROCHRONOLOGY PROVENANCE DEPOSITS ERUPTION ZONES contributionToPeriodical 2014 ftunstandrewcris https://doi.org/10.1144/SP398.8 2024-06-13T00:44:41Z Ice-rafted tephra deposits, of Marine Isotope Stage 6 (MIS 6) age, from Site U 1304 on the Gardar Drift, North Atlantic were examined for their shard size distribution and major element composition. The heterogeneous composition, large shard sizes and association with ice-rafted debris (IRD) indicate that these late MIS 6 deposits were transported by iceberg-rafting from Iceland to Site U 1304. Comparison of individual shard geochemistry with the geochemistry of Holocene volcanic systems from Iceland allows the identification of different potential volcanic source regions. This detailed geochemical analysis, when combined with Icelandic Ice Sheet (IIS) flow models for the Last Glacial Maximum (LGM), suggests that the IIS had calving margins to both the north and south during the late MIS 6 and that icebergs could have been transported to the Site U 1304 by following surface ocean circulation patterns similar to those that prevailed during the LGM. We demonstrate that the descriptive concept of Icelandic glass in the characterization of tephra components within North Atlantic IRD can be significantly improved through quantitative characterization and that such data hold the potential to help constrain surface ocean circulation models, while also potentially yielding new information about the IIS during earlier glacial periods. Article in Journal/Newspaper Ice Sheet Iceland North Atlantic University of St Andrews: Research Portal Geological Society, London, Special Publications 398 1 141 155 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
HEINRICH EVENTS VOLCANIC ASH ICELAND MAXIMUM SEDIMENTS TEPHROCHRONOLOGY PROVENANCE DEPOSITS ERUPTION ZONES |
spellingShingle |
HEINRICH EVENTS VOLCANIC ASH ICELAND MAXIMUM SEDIMENTS TEPHROCHRONOLOGY PROVENANCE DEPOSITS ERUPTION ZONES Kuhs, Marion Austin, William E. N. Abbott, Peter M. Hodell, David A. Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic |
topic_facet |
HEINRICH EVENTS VOLCANIC ASH ICELAND MAXIMUM SEDIMENTS TEPHROCHRONOLOGY PROVENANCE DEPOSITS ERUPTION ZONES |
description |
Ice-rafted tephra deposits, of Marine Isotope Stage 6 (MIS 6) age, from Site U 1304 on the Gardar Drift, North Atlantic were examined for their shard size distribution and major element composition. The heterogeneous composition, large shard sizes and association with ice-rafted debris (IRD) indicate that these late MIS 6 deposits were transported by iceberg-rafting from Iceland to Site U 1304. Comparison of individual shard geochemistry with the geochemistry of Holocene volcanic systems from Iceland allows the identification of different potential volcanic source regions. This detailed geochemical analysis, when combined with Icelandic Ice Sheet (IIS) flow models for the Last Glacial Maximum (LGM), suggests that the IIS had calving margins to both the north and south during the late MIS 6 and that icebergs could have been transported to the Site U 1304 by following surface ocean circulation patterns similar to those that prevailed during the LGM. We demonstrate that the descriptive concept of Icelandic glass in the characterization of tephra components within North Atlantic IRD can be significantly improved through quantitative characterization and that such data hold the potential to help constrain surface ocean circulation models, while also potentially yielding new information about the IIS during earlier glacial periods. |
author2 |
Austin, WEN Abbott, PM Davies, SM Pearce, NJG Wastegard, S |
format |
Article in Journal/Newspaper |
author |
Kuhs, Marion Austin, William E. N. Abbott, Peter M. Hodell, David A. |
author_facet |
Kuhs, Marion Austin, William E. N. Abbott, Peter M. Hodell, David A. |
author_sort |
Kuhs, Marion |
title |
Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic |
title_short |
Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic |
title_full |
Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic |
title_fullStr |
Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic |
title_full_unstemmed |
Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic |
title_sort |
iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial north atlantic |
publisher |
GEOLOGICAL SOC PUBLISHING HOUSE |
publishDate |
2014 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/icebergrafted-tephra-as-a-potential-tool-for-the-reconstruction-of-icesheet-processes-and-ocean-surface-circulation-in-the-glacial-north-atlantic(8336d7f0-3768-4c0f-b0a4-944d9c30e670).html https://doi.org/10.1144/SP398.8 |
genre |
Ice Sheet Iceland North Atlantic |
genre_facet |
Ice Sheet Iceland North Atlantic |
op_source |
Kuhs , M , Austin , W E N , Abbott , P M & Hodell , D A 2014 , Iceberg-rafted tephra as a potential tool for the reconstruction of ice-sheet processes and ocean surface circulation in the glacial North Atlantic . in WEN Austin , PM Abbott , SM Davies , NJG Pearce & S Wastegard (eds) , MARINE TEPHROCHRONOLOGY . Geological Society Special Publication , vol. 398 , GEOLOGICAL SOC PUBLISHING HOUSE , BATH , pp. 141-155 , Geological Society of London Meeting on Marine Tephrochronology , United Kingdom , 26/10/11 . https://doi.org/10.1144/SP398.8 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/icebergrafted-tephra-as-a-potential-tool-for-the-reconstruction-of-icesheet-processes-and-ocean-surface-circulation-in-the-glacial-north-atlantic(8336d7f0-3768-4c0f-b0a4-944d9c30e670).html urn:ISBN:978-1-86239-641-8 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1144/SP398.8 |
container_title |
Geological Society, London, Special Publications |
container_volume |
398 |
container_issue |
1 |
container_start_page |
141 |
op_container_end_page |
155 |
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1802645605863915520 |