A robust, multisite Holocene history of drift ice off northern Iceland: implications for North Atlantic climate
An important indicator of Holocene climate change is provided by evidence for variations in the extent of drift ice. A proxy for drift ice in Iceland waters is provided by the presence of quartz. Quantitative x-ray diffraction analysis of the < 2 mm sediment fraction was undertaken on 16 cores fr...
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2009
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Online Access: | https://archimer.ifremer.fr/doc/00218/32943/31420.pdf https://doi.org/10.1177/0959683608098953 https://archimer.ifremer.fr/doc/00218/32943/ |
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ftarchimer:oai:archimer.ifremer.fr:32943 2023-05-15T14:29:15+02:00 A robust, multisite Holocene history of drift ice off northern Iceland: implications for North Atlantic climate Andrews, John T. Darby, Dennis Eberle, Dennis Jennings, Anne E. Moros, Matthias Ogilvie, Astrid 2009-02 application/pdf https://archimer.ifremer.fr/doc/00218/32943/31420.pdf https://doi.org/10.1177/0959683608098953 https://archimer.ifremer.fr/doc/00218/32943/ eng eng Sage Publications Ltd https://archimer.ifremer.fr/doc/00218/32943/31420.pdf doi:10.1177/0959683608098953 https://archimer.ifremer.fr/doc/00218/32943/ 2009 SAGE Publications info:eu-repo/semantics/openAccess restricted use Holocene (0959-6836) (Sage Publications Ltd), 2009-02 , Vol. 19 , N. 1 , P. 71-77 Ice rafted debris Iceland quartz drift ice Holocene Arctic basin text Publication info:eu-repo/semantics/article 2009 ftarchimer https://doi.org/10.1177/0959683608098953 2021-09-23T20:25:01Z An important indicator of Holocene climate change is provided by evidence for variations in the extent of drift ice. A proxy for drift ice in Iceland waters is provided by the presence of quartz. Quantitative x-ray diffraction analysis of the < 2 mm sediment fraction was undertaken on 16 cores from around Iceland. The quartz weight (wt.)% estimates from each core were integrated into 250-yr intervals between -0.05 and 11.7 cal. ka BP. Median quartz wt.% varied between 0.2 and 3.4 and maximum values ranged between 2.8 and 11.8 wt.%. High values were attained in the early Holocene and minimum values were reached 6 7 cal. ka BP. Quartz wt.% then rose steadily during the late Holocene. Our data exhibit no correlation with counts on haematite-stained quartz (HSQ) grains from VM129-191 west of Ireland casting doubt on the ice-transport origin. A pilot study on the provenance of Fe oxide grains in two cores that cover the last 1.3 and 6.1 cal. ka BP indicated a large fraction of the grains between I and 6 cal. ka BP were from either Icelandic or presently unsampled sources. However, there was a dramatic increase in Canadian and Russian sources from the Arctic Ocean similar to 1 cal. ka BP. These data may indicate the beginning of an Arctic Oscillation-like climate mode. Article in Journal/Newspaper Arctic Basin Arctic Arctic Ocean Climate change Iceland North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Arctic Arctic Ocean The Holocene 19 1 71 77 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Ice rafted debris Iceland quartz drift ice Holocene Arctic basin |
spellingShingle |
Ice rafted debris Iceland quartz drift ice Holocene Arctic basin Andrews, John T. Darby, Dennis Eberle, Dennis Jennings, Anne E. Moros, Matthias Ogilvie, Astrid A robust, multisite Holocene history of drift ice off northern Iceland: implications for North Atlantic climate |
topic_facet |
Ice rafted debris Iceland quartz drift ice Holocene Arctic basin |
description |
An important indicator of Holocene climate change is provided by evidence for variations in the extent of drift ice. A proxy for drift ice in Iceland waters is provided by the presence of quartz. Quantitative x-ray diffraction analysis of the < 2 mm sediment fraction was undertaken on 16 cores from around Iceland. The quartz weight (wt.)% estimates from each core were integrated into 250-yr intervals between -0.05 and 11.7 cal. ka BP. Median quartz wt.% varied between 0.2 and 3.4 and maximum values ranged between 2.8 and 11.8 wt.%. High values were attained in the early Holocene and minimum values were reached 6 7 cal. ka BP. Quartz wt.% then rose steadily during the late Holocene. Our data exhibit no correlation with counts on haematite-stained quartz (HSQ) grains from VM129-191 west of Ireland casting doubt on the ice-transport origin. A pilot study on the provenance of Fe oxide grains in two cores that cover the last 1.3 and 6.1 cal. ka BP indicated a large fraction of the grains between I and 6 cal. ka BP were from either Icelandic or presently unsampled sources. However, there was a dramatic increase in Canadian and Russian sources from the Arctic Ocean similar to 1 cal. ka BP. These data may indicate the beginning of an Arctic Oscillation-like climate mode. |
format |
Article in Journal/Newspaper |
author |
Andrews, John T. Darby, Dennis Eberle, Dennis Jennings, Anne E. Moros, Matthias Ogilvie, Astrid |
author_facet |
Andrews, John T. Darby, Dennis Eberle, Dennis Jennings, Anne E. Moros, Matthias Ogilvie, Astrid |
author_sort |
Andrews, John T. |
title |
A robust, multisite Holocene history of drift ice off northern Iceland: implications for North Atlantic climate |
title_short |
A robust, multisite Holocene history of drift ice off northern Iceland: implications for North Atlantic climate |
title_full |
A robust, multisite Holocene history of drift ice off northern Iceland: implications for North Atlantic climate |
title_fullStr |
A robust, multisite Holocene history of drift ice off northern Iceland: implications for North Atlantic climate |
title_full_unstemmed |
A robust, multisite Holocene history of drift ice off northern Iceland: implications for North Atlantic climate |
title_sort |
robust, multisite holocene history of drift ice off northern iceland: implications for north atlantic climate |
publisher |
Sage Publications Ltd |
publishDate |
2009 |
url |
https://archimer.ifremer.fr/doc/00218/32943/31420.pdf https://doi.org/10.1177/0959683608098953 https://archimer.ifremer.fr/doc/00218/32943/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Basin Arctic Arctic Ocean Climate change Iceland North Atlantic |
genre_facet |
Arctic Basin Arctic Arctic Ocean Climate change Iceland North Atlantic |
op_source |
Holocene (0959-6836) (Sage Publications Ltd), 2009-02 , Vol. 19 , N. 1 , P. 71-77 |
op_relation |
https://archimer.ifremer.fr/doc/00218/32943/31420.pdf doi:10.1177/0959683608098953 https://archimer.ifremer.fr/doc/00218/32943/ |
op_rights |
2009 SAGE Publications info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1177/0959683608098953 |
container_title |
The Holocene |
container_volume |
19 |
container_issue |
1 |
container_start_page |
71 |
op_container_end_page |
77 |
_version_ |
1766303314816794624 |