Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present?’
ABSTRACT. 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,...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.565.7433 2023-05-15T13:34:52+02:00 Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present?’ David M. Harwood The Pennsylvania State University CiteSeerX Archives 1985 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.565.7433 http://pubs.aina.ucalgary.ca/arctic/Arctic39-4-304.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.565.7433 http://pubs.aina.ucalgary.ca/arctic/Arctic39-4-304.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic39-4-304.pdf cene Sirius Formation tillite Transantarctic Mountains Antarc text 1985 ftciteseerx 2016-01-08T12:15:14Z ABSTRACT. 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 RÉSUMÉ. Des dépôts de base de la calotte de glace du Groenland furent examinés dans l’espoir d’y trouver des microfossiles qui pourraient déterminer et dater les variations dans la taille de la calotte h travers les anntes. Des débris de base et de la glace chargée de sédiments provenant des 18 derniers Text Antarc* Arctic Greenland Groenland ice core Ice Sheet Unknown Dater ENVELOPE(-64.825,-64.825,-67.145,-67.145) Greenland Sirius ENVELOPE(163.250,163.250,-84.133,-84.133) Transantarctic Mountains |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
cene Sirius Formation tillite Transantarctic Mountains Antarc |
spellingShingle |
cene Sirius Formation tillite Transantarctic Mountains Antarc David M. Harwood Do Diatoms beneath the Greenland Ice Sheet Indicate Interglacials Warmer than Present?’ |
topic_facet |
cene Sirius Formation tillite Transantarctic Mountains Antarc |
description |
ABSTRACT. 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 RÉSUMÉ. Des dépôts de base de la calotte de glace du Groenland furent examinés dans l’espoir d’y trouver des microfossiles qui pourraient déterminer et dater les variations dans la taille de la calotte h travers les anntes. Des débris de base et de la glace chargée de sédiments provenant des 18 derniers |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
David M. Harwood |
author_facet |
David M. Harwood |
author_sort |
David M. Harwood |
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?’ |
publishDate |
1985 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.565.7433 http://pubs.aina.ucalgary.ca/arctic/Arctic39-4-304.pdf |
long_lat |
ENVELOPE(-64.825,-64.825,-67.145,-67.145) ENVELOPE(163.250,163.250,-84.133,-84.133) |
geographic |
Dater Greenland Sirius Transantarctic Mountains |
geographic_facet |
Dater Greenland Sirius Transantarctic Mountains |
genre |
Antarc* Arctic Greenland Groenland ice core Ice Sheet |
genre_facet |
Antarc* Arctic Greenland Groenland ice core Ice Sheet |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic39-4-304.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.565.7433 http://pubs.aina.ucalgary.ca/arctic/Arctic39-4-304.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766058698821599232 |