Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present?
Basal sediment debris from the Greenland ice sheet was examined with the hope of recovering microfossils that could be used to determine and date changes in ice sheet size through time. Basal debris and debris-laden ice from the lower 18 m of the Camp Century ice core, northwest Greenland, revealed...
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The Arctic Institute of North America
1986
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Online Access: | https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65144 |
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/65144 2023-05-15T14:19:15+02:00 Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present? Harwood, David M. 1986-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65144 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65144/49058 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65144 ARCTIC; Vol. 39 No. 4 (1986): December: 285–379; 304-308 1923-1245 0004-0843 Diatoms Flow Ice sheets Melting Palaeobotany Palaeoclimatology Pleistocene epoch Greenland info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1986 ftunivcalgaryojs 2022-03-22T21:22:12Z Basal sediment debris from the Greenland ice sheet was examined with the hope of recovering microfossils that could be used to determine and date changes in ice sheet size through time. Basal debris and debris-laden ice from the lower 18 m of the Camp Century ice core, northwest Greenland, revealed the presence of common freshwater and rare marine diatoms. These diatoms may have lived in the vicinity of the Camp Century site in the Late Neogene prior to development of the Greenland ice sheet. More likely, they lived during a Pleistocene interglacial period, when the volume of ice in the Greenland ice sheet was smaller than it is today and the site was ice free. A warmer and/or longer interglacial period than the present Holocene "interglacial" is suggested to explain the large decrease in ice sheet volume.Key words: diatoms, interglacial, Pleistocene, Camp Century ice core, Greenland Mots clés: diatomées, interglaciaire, Pléistocène, carotte de glace du Camp Century, Groenland Article in Journal/Newspaper Arctic Greenland Groenland ice core Ice Sheet University of Calgary Journal Hosting Greenland ARCTIC 39 4 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Diatoms Flow Ice sheets Melting Palaeobotany Palaeoclimatology Pleistocene epoch Greenland |
spellingShingle |
Diatoms Flow Ice sheets Melting Palaeobotany Palaeoclimatology Pleistocene epoch Greenland Harwood, David M. Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present? |
topic_facet |
Diatoms Flow Ice sheets Melting Palaeobotany Palaeoclimatology Pleistocene epoch Greenland |
description |
Basal sediment debris from the Greenland ice sheet was examined with the hope of recovering microfossils that could be used to determine and date changes in ice sheet size through time. Basal debris and debris-laden ice from the lower 18 m of the Camp Century ice core, northwest Greenland, revealed the presence of common freshwater and rare marine diatoms. These diatoms may have lived in the vicinity of the Camp Century site in the Late Neogene prior to development of the Greenland ice sheet. More likely, they lived during a Pleistocene interglacial period, when the volume of ice in the Greenland ice sheet was smaller than it is today and the site was ice free. A warmer and/or longer interglacial period than the present Holocene "interglacial" is suggested to explain the large decrease in ice sheet volume.Key words: diatoms, interglacial, Pleistocene, Camp Century ice core, Greenland Mots clés: diatomées, interglaciaire, Pléistocène, carotte de glace du Camp Century, Groenland |
format |
Article in Journal/Newspaper |
author |
Harwood, David M. |
author_facet |
Harwood, David M. |
author_sort |
Harwood, David M. |
title |
Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present? |
title_short |
Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present? |
title_full |
Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present? |
title_fullStr |
Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present? |
title_full_unstemmed |
Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present? |
title_sort |
do diatoms beneath the greenland ice sheet indicate interglacials warmer than present? |
publisher |
The Arctic Institute of North America |
publishDate |
1986 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65144 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Arctic Greenland Groenland ice core Ice Sheet |
genre_facet |
Arctic Greenland Groenland ice core Ice Sheet |
op_source |
ARCTIC; Vol. 39 No. 4 (1986): December: 285–379; 304-308 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65144/49058 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65144 |
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