Accelerator mass spectrometry radiocarbon stratigraphies in deep Labrador Sea cores: paleoceanographic implications
Foraminiferal accelerator mass spectrometry (AMS) 14 C ages and benthic–planktonic age differences in surface-layer sediments of Labrador Sea are influenced by bioturbation and by changes in the relative abundance of foraminiferal species carrying the 14 C signal. Using benthic-mixing models we demo...
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1994
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Online Access: | http://dx.doi.org/10.1139/e94-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-005 |
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crcansciencepubl:10.1139/e94-005 2024-04-28T08:27:37+00:00 Accelerator mass spectrometry radiocarbon stratigraphies in deep Labrador Sea cores: paleoceanographic implications Wu, Guoping Hillaire-Marcel, Claude 1994 http://dx.doi.org/10.1139/e94-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-005 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 31, issue 1, page 38-47 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1994 crcansciencepubl https://doi.org/10.1139/e94-005 2024-04-09T06:56:31Z Foraminiferal accelerator mass spectrometry (AMS) 14 C ages and benthic–planktonic age differences in surface-layer sediments of Labrador Sea are influenced by bioturbation and by changes in the relative abundance of foraminiferal species carrying the 14 C signal. Using benthic-mixing models we demonstrate that inverse benthic–planktonic age differences can be generated when the effect of benthic mixing and abundance change exceeds apparent age differences between surface water and deep water. AMS 14 C ages obtained put constraints on the timing of major paleoceanographic changes in the basin, notably on the history of the Western Boundary Undercurrent, which was clearly reinitiated during the mid-deglaciation and intensified during the last 2–3 ka. Article in Journal/Newspaper Labrador Sea Canadian Science Publishing Canadian Journal of Earth Sciences 31 1 38 47 |
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Open Polar |
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Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Wu, Guoping Hillaire-Marcel, Claude Accelerator mass spectrometry radiocarbon stratigraphies in deep Labrador Sea cores: paleoceanographic implications |
topic_facet |
General Earth and Planetary Sciences |
description |
Foraminiferal accelerator mass spectrometry (AMS) 14 C ages and benthic–planktonic age differences in surface-layer sediments of Labrador Sea are influenced by bioturbation and by changes in the relative abundance of foraminiferal species carrying the 14 C signal. Using benthic-mixing models we demonstrate that inverse benthic–planktonic age differences can be generated when the effect of benthic mixing and abundance change exceeds apparent age differences between surface water and deep water. AMS 14 C ages obtained put constraints on the timing of major paleoceanographic changes in the basin, notably on the history of the Western Boundary Undercurrent, which was clearly reinitiated during the mid-deglaciation and intensified during the last 2–3 ka. |
format |
Article in Journal/Newspaper |
author |
Wu, Guoping Hillaire-Marcel, Claude |
author_facet |
Wu, Guoping Hillaire-Marcel, Claude |
author_sort |
Wu, Guoping |
title |
Accelerator mass spectrometry radiocarbon stratigraphies in deep Labrador Sea cores: paleoceanographic implications |
title_short |
Accelerator mass spectrometry radiocarbon stratigraphies in deep Labrador Sea cores: paleoceanographic implications |
title_full |
Accelerator mass spectrometry radiocarbon stratigraphies in deep Labrador Sea cores: paleoceanographic implications |
title_fullStr |
Accelerator mass spectrometry radiocarbon stratigraphies in deep Labrador Sea cores: paleoceanographic implications |
title_full_unstemmed |
Accelerator mass spectrometry radiocarbon stratigraphies in deep Labrador Sea cores: paleoceanographic implications |
title_sort |
accelerator mass spectrometry radiocarbon stratigraphies in deep labrador sea cores: paleoceanographic implications |
publisher |
Canadian Science Publishing |
publishDate |
1994 |
url |
http://dx.doi.org/10.1139/e94-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-005 |
genre |
Labrador Sea |
genre_facet |
Labrador Sea |
op_source |
Canadian Journal of Earth Sciences volume 31, issue 1, page 38-47 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e94-005 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
31 |
container_issue |
1 |
container_start_page |
38 |
op_container_end_page |
47 |
_version_ |
1797586475845419008 |