Million years of Greenland Ice Sheet history recorded in ocean sediments
Geological records from Tertiary and Quaternary terrestrial and oceanic sections have documented the presence of ice caps and sea ice covers both in the Southern and the Northern hemispheres since Eocene times, approximately since 45 Ma. In this paper focussing on Greenland we mainly use the occurre...
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Deutsche Gesellschaft für Polarforschung; Alfred-Wegener-Institu für Polar- und Meeresforschung
2011
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Online Access: | https://oceanrep.geomar.de/id/eprint/13053/ https://oceanrep.geomar.de/id/eprint/13053/1/2011_Thiede_etal_Polarforschung_15-33.pdf http://epic-reports.awi.de/3865/1/15-33.pdf |
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ftoceanrep:oai:oceanrep.geomar.de:13053 2023-05-15T15:05:30+02:00 Million years of Greenland Ice Sheet history recorded in ocean sediments Thiede, Jörn Jessen, Catherine Knutz, Paul Kuijpers, Antoon Mikkelsen, Naja Nørgaard-Pedersen, Nils Spielhagen, Robert F. 2011 text https://oceanrep.geomar.de/id/eprint/13053/ https://oceanrep.geomar.de/id/eprint/13053/1/2011_Thiede_etal_Polarforschung_15-33.pdf http://epic-reports.awi.de/3865/1/15-33.pdf en eng Deutsche Gesellschaft für Polarforschung; Alfred-Wegener-Institu für Polar- und Meeresforschung https://oceanrep.geomar.de/id/eprint/13053/1/2011_Thiede_etal_Polarforschung_15-33.pdf Thiede, J. , Jessen, C., Knutz, P., Kuijpers, A., Mikkelsen, N., Nørgaard-Pedersen, N. and Spielhagen, R. F. (2011) Million years of Greenland Ice Sheet history recorded in ocean sediments. Open Access Polarforschung, 80 (3). pp. 141-149. cc_by_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2011 ftoceanrep 2023-04-07T15:01:47Z Geological records from Tertiary and Quaternary terrestrial and oceanic sections have documented the presence of ice caps and sea ice covers both in the Southern and the Northern hemispheres since Eocene times, approximately since 45 Ma. In this paper focussing on Greenland we mainly use the occurrences of coarse ice-rafted debris (IRD) in Quaternary and Tertiary ocean sediment cores to conclude on age and origin of the glaciers/ice sheets, which once produced the icebergs transporting this material into the adjacent ocean. Deep-sea sediment cores with their records of ice-rafting from off NE Greenland, Fram Strait and to the south of Greenland suggest the more or less continuous existence of the Greenland ice sheet since 18 Ma, maybe much longer, and hence far beyond the stratigraphic extent of the Greenland ice cores. The timing of onset of glaciation on Greenland and whether it has been glaciated continuously since, are wide open questions of its long-term history. We also urgently need new scientific drilling programs in the waters around Greenland, in particular in the segment of the Arctic Ocean to the north of Greenland. Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Greenland Greenland ice cores Ice Sheet Iceberg* Polarforschung Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Greenland |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Geological records from Tertiary and Quaternary terrestrial and oceanic sections have documented the presence of ice caps and sea ice covers both in the Southern and the Northern hemispheres since Eocene times, approximately since 45 Ma. In this paper focussing on Greenland we mainly use the occurrences of coarse ice-rafted debris (IRD) in Quaternary and Tertiary ocean sediment cores to conclude on age and origin of the glaciers/ice sheets, which once produced the icebergs transporting this material into the adjacent ocean. Deep-sea sediment cores with their records of ice-rafting from off NE Greenland, Fram Strait and to the south of Greenland suggest the more or less continuous existence of the Greenland ice sheet since 18 Ma, maybe much longer, and hence far beyond the stratigraphic extent of the Greenland ice cores. The timing of onset of glaciation on Greenland and whether it has been glaciated continuously since, are wide open questions of its long-term history. We also urgently need new scientific drilling programs in the waters around Greenland, in particular in the segment of the Arctic Ocean to the north of Greenland. |
format |
Article in Journal/Newspaper |
author |
Thiede, Jörn Jessen, Catherine Knutz, Paul Kuijpers, Antoon Mikkelsen, Naja Nørgaard-Pedersen, Nils Spielhagen, Robert F. |
spellingShingle |
Thiede, Jörn Jessen, Catherine Knutz, Paul Kuijpers, Antoon Mikkelsen, Naja Nørgaard-Pedersen, Nils Spielhagen, Robert F. Million years of Greenland Ice Sheet history recorded in ocean sediments |
author_facet |
Thiede, Jörn Jessen, Catherine Knutz, Paul Kuijpers, Antoon Mikkelsen, Naja Nørgaard-Pedersen, Nils Spielhagen, Robert F. |
author_sort |
Thiede, Jörn |
title |
Million years of Greenland Ice Sheet history recorded in ocean sediments |
title_short |
Million years of Greenland Ice Sheet history recorded in ocean sediments |
title_full |
Million years of Greenland Ice Sheet history recorded in ocean sediments |
title_fullStr |
Million years of Greenland Ice Sheet history recorded in ocean sediments |
title_full_unstemmed |
Million years of Greenland Ice Sheet history recorded in ocean sediments |
title_sort |
million years of greenland ice sheet history recorded in ocean sediments |
publisher |
Deutsche Gesellschaft für Polarforschung; Alfred-Wegener-Institu für Polar- und Meeresforschung |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/13053/ https://oceanrep.geomar.de/id/eprint/13053/1/2011_Thiede_etal_Polarforschung_15-33.pdf http://epic-reports.awi.de/3865/1/15-33.pdf |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Ocean Fram Strait Greenland Greenland ice cores Ice Sheet Iceberg* Polarforschung Sea ice |
genre_facet |
Arctic Arctic Ocean Fram Strait Greenland Greenland ice cores Ice Sheet Iceberg* Polarforschung Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/13053/1/2011_Thiede_etal_Polarforschung_15-33.pdf Thiede, J. , Jessen, C., Knutz, P., Kuijpers, A., Mikkelsen, N., Nørgaard-Pedersen, N. and Spielhagen, R. F. (2011) Million years of Greenland Ice Sheet history recorded in ocean sediments. Open Access Polarforschung, 80 (3). pp. 141-149. |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
_version_ |
1766337187371024384 |