Paleoenvironments during Younger Dryas‐ Early Holocene retreat of the Greenland Ice Sheet from outer Disko Trough, central west Greenland
ABSTRACT Paleoenvironments during the late Younger Dryas through early Holocene retreat of the Greenland Ice Sheet from the outer shelf in the Disko Trough system of central West Greenland were investigated via lithofacies, foraminifera, dinocysts and sediment provenance analyses in radiocarbon‐date...
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Online Access: | http://dx.doi.org/10.1002/jqs.2652 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2652 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2652 |
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crwiley:10.1002/jqs.2652 2024-06-23T07:51:29+00:00 Paleoenvironments during Younger Dryas‐ Early Holocene retreat of the Greenland Ice Sheet from outer Disko Trough, central west Greenland JENNINGS, ANNE E. WALTON, MARIAH E. Ó COFAIGH, COLM KILFEATHER, AOIBHEANN ANDREWS, JOHN T. ORTIZ, JOSEPH D. DE VERNAL, ANNE DOWDESWELL, JULIAN A. Natural Environment Research Council 2013 http://dx.doi.org/10.1002/jqs.2652 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2652 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2652 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 29, issue 1, page 27-40 ISSN 0267-8179 1099-1417 journal-article 2013 crwiley https://doi.org/10.1002/jqs.2652 2024-06-04T06:45:40Z ABSTRACT Paleoenvironments during the late Younger Dryas through early Holocene retreat of the Greenland Ice Sheet from the outer shelf in the Disko Trough system of central West Greenland were investigated via lithofacies, foraminifera, dinocysts and sediment provenance analyses in radiocarbon‐dated sediment cores from the upper slope (JR175‐VC35) and outer shelf (JR175‐VC20 and HU2008029‐070CC). Core data show that the ice margin retreated rapidly from the outer shelf by calving, beginning by 12.2k cal a BP under cold paleoceanographic conditions with up to 11 months of sea‐ice. Ice retreat into Disko Bugt was well underway by 10.9k cal a BP. Enhanced ice‐sheet ablation in Disko Bugt and elsewhere along the West Greenland coast is inferred from cold glacial marine conditions associated with high sedimentation rates between 10.9 and 9.5k cal a BP on the outer shelf. Glacial marine conditions are recorded on the outer shelf until 7.8k cal a BP. Detrital carbonate‐bearing sediments rich in >2‐mm clasts deposited between 11.6 and 10.6 k cal a BP indicate that icebergs calved from northern Baffin Bay ice margins were melting and releasing sediments along West Greenland while the Greenland Ice Sheet margin was retreating into Disko Bugt. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Disko bugt Greenland Ice Sheet Sea ice Wiley Online Library Baffin Bay Greenland Journal of Quaternary Science 29 1 27 40 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
ABSTRACT Paleoenvironments during the late Younger Dryas through early Holocene retreat of the Greenland Ice Sheet from the outer shelf in the Disko Trough system of central West Greenland were investigated via lithofacies, foraminifera, dinocysts and sediment provenance analyses in radiocarbon‐dated sediment cores from the upper slope (JR175‐VC35) and outer shelf (JR175‐VC20 and HU2008029‐070CC). Core data show that the ice margin retreated rapidly from the outer shelf by calving, beginning by 12.2k cal a BP under cold paleoceanographic conditions with up to 11 months of sea‐ice. Ice retreat into Disko Bugt was well underway by 10.9k cal a BP. Enhanced ice‐sheet ablation in Disko Bugt and elsewhere along the West Greenland coast is inferred from cold glacial marine conditions associated with high sedimentation rates between 10.9 and 9.5k cal a BP on the outer shelf. Glacial marine conditions are recorded on the outer shelf until 7.8k cal a BP. Detrital carbonate‐bearing sediments rich in >2‐mm clasts deposited between 11.6 and 10.6 k cal a BP indicate that icebergs calved from northern Baffin Bay ice margins were melting and releasing sediments along West Greenland while the Greenland Ice Sheet margin was retreating into Disko Bugt. |
author2 |
Natural Environment Research Council |
format |
Article in Journal/Newspaper |
author |
JENNINGS, ANNE E. WALTON, MARIAH E. Ó COFAIGH, COLM KILFEATHER, AOIBHEANN ANDREWS, JOHN T. ORTIZ, JOSEPH D. DE VERNAL, ANNE DOWDESWELL, JULIAN A. |
spellingShingle |
JENNINGS, ANNE E. WALTON, MARIAH E. Ó COFAIGH, COLM KILFEATHER, AOIBHEANN ANDREWS, JOHN T. ORTIZ, JOSEPH D. DE VERNAL, ANNE DOWDESWELL, JULIAN A. Paleoenvironments during Younger Dryas‐ Early Holocene retreat of the Greenland Ice Sheet from outer Disko Trough, central west Greenland |
author_facet |
JENNINGS, ANNE E. WALTON, MARIAH E. Ó COFAIGH, COLM KILFEATHER, AOIBHEANN ANDREWS, JOHN T. ORTIZ, JOSEPH D. DE VERNAL, ANNE DOWDESWELL, JULIAN A. |
author_sort |
JENNINGS, ANNE E. |
title |
Paleoenvironments during Younger Dryas‐ Early Holocene retreat of the Greenland Ice Sheet from outer Disko Trough, central west Greenland |
title_short |
Paleoenvironments during Younger Dryas‐ Early Holocene retreat of the Greenland Ice Sheet from outer Disko Trough, central west Greenland |
title_full |
Paleoenvironments during Younger Dryas‐ Early Holocene retreat of the Greenland Ice Sheet from outer Disko Trough, central west Greenland |
title_fullStr |
Paleoenvironments during Younger Dryas‐ Early Holocene retreat of the Greenland Ice Sheet from outer Disko Trough, central west Greenland |
title_full_unstemmed |
Paleoenvironments during Younger Dryas‐ Early Holocene retreat of the Greenland Ice Sheet from outer Disko Trough, central west Greenland |
title_sort |
paleoenvironments during younger dryas‐ early holocene retreat of the greenland ice sheet from outer disko trough, central west greenland |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/jqs.2652 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2652 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2652 |
geographic |
Baffin Bay Greenland |
geographic_facet |
Baffin Bay Greenland |
genre |
Baffin Bay Baffin Bay Baffin Disko bugt Greenland Ice Sheet Sea ice |
genre_facet |
Baffin Bay Baffin Bay Baffin Disko bugt Greenland Ice Sheet Sea ice |
op_source |
Journal of Quaternary Science volume 29, issue 1, page 27-40 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.2652 |
container_title |
Journal of Quaternary Science |
container_volume |
29 |
container_issue |
1 |
container_start_page |
27 |
op_container_end_page |
40 |
_version_ |
1802642590711939072 |