Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets?
Theories explaining the origin and distribution of Heinrich layers—abrupt, massive discharges of ice-rafted detritus—generally attribute these layers to the Laurentide ice sheet. However, doubt has been cast by the discovery that sediments also originated from European ice sheets. Here we present is...
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2000
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ftoceanrep:oai:oceanrep.geomar.de:49874 2023-05-15T16:28:54+02:00 Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets? Grousset, Francis E. Pujol, Claude Labeyrie, Laurent Auffret, Gérard Boelaert, An 2000 text https://oceanrep.geomar.de/id/eprint/49874/ https://oceanrep.geomar.de/id/eprint/49874/1/Grousset%20et%20al.pdf https://doi.org/10.1130/0091-7613%282000%2928%3C123%3AWTNAHE%3E2.0.CO%3B2 https://doi.org/10.1130/0091-7613(2000)28<123:WTNAHE>2.0.CO;2 en eng GSA (Geological Society of America) https://oceanrep.geomar.de/id/eprint/49874/1/Grousset%20et%20al.pdf Grousset, F. E., Pujol, C., Labeyrie, L., Auffret, G. and Boelaert, A. (2000) Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets?. Geology, 28 (2). pp. 123-126. DOI 10.1130/0091-7613(2000)28<123:WTNAHE>2.0.CO;2 <https://doi.org/10.1130/0091-7613%282000%2928%3C123%3AWTNAHE%3E2.0.CO%3B2>. doi:10.1130/0091-7613(2000)28<123:WTNAHE>2.0.CO;2 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2000 ftoceanrep https://doi.org/10.1130/0091-7613%282000%2928%3C123%3AWTNAHE%3E2.0.CO%3B210.1130/0091-7613(2000)28<123:WTNAHE>2.0.CO;2 2023-04-07T15:50:46Z Theories explaining the origin and distribution of Heinrich layers—abrupt, massive discharges of ice-rafted detritus—generally attribute these layers to the Laurentide ice sheet. However, doubt has been cast by the discovery that sediments also originated from European ice sheets. Here we present isotopic (Sr-Nd) fingerprints of Heinrich layers obtained in cores from the European margin. They reveal that for most of the Heinrich layers, the icebergs were calved first from the European ice sheets, predating the Laurentide surges. Accelerator mass spectrometry 14C ages reveal that the oceanic Heinrich events were synchronous with their dust equivalents in the Greenland ice cores, implying a direct ocean-atmosphere link. The typical Laurentide surge seems to have occurred over a short time span, after about 1.5 k.y. of iceberg release from the European ice sheets. This suggests that the Laurentide ice sheet responded to a stimulus created by events in the European sector. Article in Journal/Newspaper Greenland Greenland ice cores Ice Sheet North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Greenland |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Theories explaining the origin and distribution of Heinrich layers—abrupt, massive discharges of ice-rafted detritus—generally attribute these layers to the Laurentide ice sheet. However, doubt has been cast by the discovery that sediments also originated from European ice sheets. Here we present isotopic (Sr-Nd) fingerprints of Heinrich layers obtained in cores from the European margin. They reveal that for most of the Heinrich layers, the icebergs were calved first from the European ice sheets, predating the Laurentide surges. Accelerator mass spectrometry 14C ages reveal that the oceanic Heinrich events were synchronous with their dust equivalents in the Greenland ice cores, implying a direct ocean-atmosphere link. The typical Laurentide surge seems to have occurred over a short time span, after about 1.5 k.y. of iceberg release from the European ice sheets. This suggests that the Laurentide ice sheet responded to a stimulus created by events in the European sector. |
format |
Article in Journal/Newspaper |
author |
Grousset, Francis E. Pujol, Claude Labeyrie, Laurent Auffret, Gérard Boelaert, An |
spellingShingle |
Grousset, Francis E. Pujol, Claude Labeyrie, Laurent Auffret, Gérard Boelaert, An Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets? |
author_facet |
Grousset, Francis E. Pujol, Claude Labeyrie, Laurent Auffret, Gérard Boelaert, An |
author_sort |
Grousset, Francis E. |
title |
Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets? |
title_short |
Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets? |
title_full |
Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets? |
title_fullStr |
Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets? |
title_full_unstemmed |
Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets? |
title_sort |
were the north atlantic heinrich events triggered by the behavior of the european ice sheets? |
publisher |
GSA (Geological Society of America) |
publishDate |
2000 |
url |
https://oceanrep.geomar.de/id/eprint/49874/ https://oceanrep.geomar.de/id/eprint/49874/1/Grousset%20et%20al.pdf https://doi.org/10.1130/0091-7613%282000%2928%3C123%3AWTNAHE%3E2.0.CO%3B2 https://doi.org/10.1130/0091-7613(2000)28<123:WTNAHE>2.0.CO;2 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores Ice Sheet North Atlantic |
genre_facet |
Greenland Greenland ice cores Ice Sheet North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/49874/1/Grousset%20et%20al.pdf Grousset, F. E., Pujol, C., Labeyrie, L., Auffret, G. and Boelaert, A. (2000) Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets?. Geology, 28 (2). pp. 123-126. DOI 10.1130/0091-7613(2000)28<123:WTNAHE>2.0.CO;2 <https://doi.org/10.1130/0091-7613%282000%2928%3C123%3AWTNAHE%3E2.0.CO%3B2>. doi:10.1130/0091-7613(2000)28<123:WTNAHE>2.0.CO;2 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1130/0091-7613%282000%2928%3C123%3AWTNAHE%3E2.0.CO%3B210.1130/0091-7613(2000)28<123:WTNAHE>2.0.CO;2 |
_version_ |
1766018586889945088 |