A ~240 ka record of Ice Sheet and Ocean interactions on the Snorri Drift, SW of Iceland ...
Core MD99-2323 was extracted from the Snorri Drift at a water depth of 1062 m, just south of the Denmark Strait, and ~120 km from the Last Glacial Maximum (LGM) margins of the Iceland and East Greenland Ice Sheets. The core chronology (~7.5 to 240 cal ka) is derived from radiocarbon dates, marker te...
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Online Access: | https://dx.doi.org/10.17863/cam.79551 https://www.repository.cam.ac.uk/handle/1810/332105 |
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ftdatacite:10.17863/cam.79551 2024-02-04T10:00:00+01:00 A ~240 ka record of Ice Sheet and Ocean interactions on the Snorri Drift, SW of Iceland ... Andrews, JT McCave, IN Syvitski, J 2021 https://dx.doi.org/10.17863/cam.79551 https://www.repository.cam.ac.uk/handle/1810/332105 en eng Elsevier BV open.access All Rights Reserved http://www.rioxx.net/licenses/all-rights-reserved http://purl.org/coar/access_right/c_abf2 Snorri Drift Deep Northern Boundary Current MIS 1-7 Mineral composition Sortable silt Flow speed Saline gravity current IRD Article ScholarlyArticle JournalArticle article-journal 2021 ftdatacite https://doi.org/10.17863/cam.79551 2024-01-05T13:26:02Z Core MD99-2323 was extracted from the Snorri Drift at a water depth of 1062 m, just south of the Denmark Strait, and ~120 km from the Last Glacial Maximum (LGM) margins of the Iceland and East Greenland Ice Sheets. The core chronology (~7.5 to 240 cal ka) is derived from radiocarbon dates, marker tephra, paleomagnetic excursion, and correlation with North Atlantic δ18O records on Neogloboquadrina pachyderma (δ18ONp). Sedimentation averaged ~7.5 cm/kyr. Records of proxy flow speed, ice rafted debris (IRD) and oxygen isotopes show that many IRD abundance peaks represent winnowing of the fine fraction by faster flows rather than pulses of increased IRD flux. The overall pattern of flow speed does not resemble the classic fast interglacial/slow glacial pattern seen in records of Nordic Sea overflow, rather the current record is suggested to be partly controlled by the production of brine-driven gravity flows from adjacent ice fronts, especially during cold periods. On a smaller scale the usual glacial/slow – ... Article in Journal/Newspaper Denmark Strait East Greenland Greenland Ice Sheet Iceland Neogloboquadrina pachyderma Nordic Sea North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Snorri Drift Deep Northern Boundary Current MIS 1-7 Mineral composition Sortable silt Flow speed Saline gravity current IRD |
spellingShingle |
Snorri Drift Deep Northern Boundary Current MIS 1-7 Mineral composition Sortable silt Flow speed Saline gravity current IRD Andrews, JT McCave, IN Syvitski, J A ~240 ka record of Ice Sheet and Ocean interactions on the Snorri Drift, SW of Iceland ... |
topic_facet |
Snorri Drift Deep Northern Boundary Current MIS 1-7 Mineral composition Sortable silt Flow speed Saline gravity current IRD |
description |
Core MD99-2323 was extracted from the Snorri Drift at a water depth of 1062 m, just south of the Denmark Strait, and ~120 km from the Last Glacial Maximum (LGM) margins of the Iceland and East Greenland Ice Sheets. The core chronology (~7.5 to 240 cal ka) is derived from radiocarbon dates, marker tephra, paleomagnetic excursion, and correlation with North Atlantic δ18O records on Neogloboquadrina pachyderma (δ18ONp). Sedimentation averaged ~7.5 cm/kyr. Records of proxy flow speed, ice rafted debris (IRD) and oxygen isotopes show that many IRD abundance peaks represent winnowing of the fine fraction by faster flows rather than pulses of increased IRD flux. The overall pattern of flow speed does not resemble the classic fast interglacial/slow glacial pattern seen in records of Nordic Sea overflow, rather the current record is suggested to be partly controlled by the production of brine-driven gravity flows from adjacent ice fronts, especially during cold periods. On a smaller scale the usual glacial/slow – ... |
format |
Article in Journal/Newspaper |
author |
Andrews, JT McCave, IN Syvitski, J |
author_facet |
Andrews, JT McCave, IN Syvitski, J |
author_sort |
Andrews, JT |
title |
A ~240 ka record of Ice Sheet and Ocean interactions on the Snorri Drift, SW of Iceland ... |
title_short |
A ~240 ka record of Ice Sheet and Ocean interactions on the Snorri Drift, SW of Iceland ... |
title_full |
A ~240 ka record of Ice Sheet and Ocean interactions on the Snorri Drift, SW of Iceland ... |
title_fullStr |
A ~240 ka record of Ice Sheet and Ocean interactions on the Snorri Drift, SW of Iceland ... |
title_full_unstemmed |
A ~240 ka record of Ice Sheet and Ocean interactions on the Snorri Drift, SW of Iceland ... |
title_sort |
~240 ka record of ice sheet and ocean interactions on the snorri drift, sw of iceland ... |
publisher |
Elsevier BV |
publishDate |
2021 |
url |
https://dx.doi.org/10.17863/cam.79551 https://www.repository.cam.ac.uk/handle/1810/332105 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Denmark Strait East Greenland Greenland Ice Sheet Iceland Neogloboquadrina pachyderma Nordic Sea North Atlantic |
genre_facet |
Denmark Strait East Greenland Greenland Ice Sheet Iceland Neogloboquadrina pachyderma Nordic Sea North Atlantic |
op_rights |
open.access All Rights Reserved http://www.rioxx.net/licenses/all-rights-reserved http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.17863/cam.79551 |
_version_ |
1789965064465285120 |