Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf
Foraminifera, sedimentology, and tephra geochemistry in core 93030‐006 LCF from the southwestern Iceland shelf were used to reconstruct paleoenvironments between 12.7 and 9.4 14 C ka BP. Seismic‐reflection profiles place the core in glacial‐marine and marine sediments within one meter of the underly...
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crwiley:10.1111/j.1502-3885.2000.tb00976.x 2024-06-02T08:02:26+00:00 Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf JENNINGS, ANNE SYVITSKI, JAMES GERSON, LINDA GRÖNVOLD, KARL GEIRSDÓTTIR, ÁSLAUG HARDARDÓTTIR, JÓRUNN ANDREWS, JOHN HAGEN, SVEINUNG 2000 http://dx.doi.org/10.1111/j.1502-3885.2000.tb00976.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2000.tb00976.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2000.tb00976.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 29, issue 3, page 163-183 ISSN 0300-9483 1502-3885 journal-article 2000 crwiley https://doi.org/10.1111/j.1502-3885.2000.tb00976.x 2024-05-03T11:38:49Z Foraminifera, sedimentology, and tephra geochemistry in core 93030‐006 LCF from the southwestern Iceland shelf were used to reconstruct paleoenvironments between 12.7 and 9.4 14 C ka BP. Seismic‐reflection profiles place the core in glacial‐marine and marine sediments within one meter of the underlying glacial till. Foraminifers in the earliest glacial‐marine sediments provide a record of ice‐distal conditions and immigration of slope species onto the shelf in association with warm Atlantic water. Meltwater increased during the Allerød under a weakened Atlantic water influence. Arctic conditions began by 11.14 14 C ka BP with an abrupt increase in meltwater and near exclusion of boreal fauna from the shelf. Meltwater diminished in the early Younger Dryas, coinciding with sea‐surface cooling between 11.14 and 10.5 14 C ka BP. A slight warming recorded in the uppermost glacial‐marine sediments was interrupted by an inferred jökulhlaup event emanating from glacier ice on the Western Volcanic Zone. Retreat of the ice margin from the sea sometime between c. 10.3 and 9.94 14 C ka BP coincided with this event. The onset of postglacial marine sedimentation occurred along with increasing evidence of Atlantic water c. 9.94 14 C ka BP and was interrupted by a short‐lived Pre‐boreal cooling of the Irminger Current c. 9.91 14 C ka BP. Conditions similar to those today were established by 9.7 14 C ka BP. Article in Journal/Newspaper Arctic Foraminifera* glacier Iceland Wiley Online Library Arctic Boreas 29 3 163 183 |
institution |
Open Polar |
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Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Foraminifera, sedimentology, and tephra geochemistry in core 93030‐006 LCF from the southwestern Iceland shelf were used to reconstruct paleoenvironments between 12.7 and 9.4 14 C ka BP. Seismic‐reflection profiles place the core in glacial‐marine and marine sediments within one meter of the underlying glacial till. Foraminifers in the earliest glacial‐marine sediments provide a record of ice‐distal conditions and immigration of slope species onto the shelf in association with warm Atlantic water. Meltwater increased during the Allerød under a weakened Atlantic water influence. Arctic conditions began by 11.14 14 C ka BP with an abrupt increase in meltwater and near exclusion of boreal fauna from the shelf. Meltwater diminished in the early Younger Dryas, coinciding with sea‐surface cooling between 11.14 and 10.5 14 C ka BP. A slight warming recorded in the uppermost glacial‐marine sediments was interrupted by an inferred jökulhlaup event emanating from glacier ice on the Western Volcanic Zone. Retreat of the ice margin from the sea sometime between c. 10.3 and 9.94 14 C ka BP coincided with this event. The onset of postglacial marine sedimentation occurred along with increasing evidence of Atlantic water c. 9.94 14 C ka BP and was interrupted by a short‐lived Pre‐boreal cooling of the Irminger Current c. 9.91 14 C ka BP. Conditions similar to those today were established by 9.7 14 C ka BP. |
format |
Article in Journal/Newspaper |
author |
JENNINGS, ANNE SYVITSKI, JAMES GERSON, LINDA GRÖNVOLD, KARL GEIRSDÓTTIR, ÁSLAUG HARDARDÓTTIR, JÓRUNN ANDREWS, JOHN HAGEN, SVEINUNG |
spellingShingle |
JENNINGS, ANNE SYVITSKI, JAMES GERSON, LINDA GRÖNVOLD, KARL GEIRSDÓTTIR, ÁSLAUG HARDARDÓTTIR, JÓRUNN ANDREWS, JOHN HAGEN, SVEINUNG Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf |
author_facet |
JENNINGS, ANNE SYVITSKI, JAMES GERSON, LINDA GRÖNVOLD, KARL GEIRSDÓTTIR, ÁSLAUG HARDARDÓTTIR, JÓRUNN ANDREWS, JOHN HAGEN, SVEINUNG |
author_sort |
JENNINGS, ANNE |
title |
Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf |
title_short |
Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf |
title_full |
Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf |
title_fullStr |
Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf |
title_full_unstemmed |
Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf |
title_sort |
chronology and paleoenvironments during the late weichselian deglaciation of the southwest iceland shelf |
publisher |
Wiley |
publishDate |
2000 |
url |
http://dx.doi.org/10.1111/j.1502-3885.2000.tb00976.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2000.tb00976.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2000.tb00976.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Foraminifera* glacier Iceland |
genre_facet |
Arctic Foraminifera* glacier Iceland |
op_source |
Boreas volume 29, issue 3, page 163-183 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.2000.tb00976.x |
container_title |
Boreas |
container_volume |
29 |
container_issue |
3 |
container_start_page |
163 |
op_container_end_page |
183 |
_version_ |
1800746930986287104 |