Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic
Author Posting. © American Geophysical Union, 2006. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 21 (2006): PA4102, doi:10.1029/2006PA001294. The neodymium isotopic compositi...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/1392 2023-05-15T17:28:25+02:00 Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic van de Flierdt, Tina Robinson, Laura F. Adkins, Jess F. Hemming, Sidney R. Goldstein, Steven L. 2006-11-25 text/plain application/pdf https://hdl.handle.net/1912/1392 en_US eng American Geophysical Union https://doi.org/10.1029/2006PA001294 Paleoceanography 21 (2006): PA4102 https://hdl.handle.net/1912/1392 doi:10.1029/2006PA001294 Paleoceanography 21 (2006): PA4102 doi:10.1029/2006PA001294 Article 2006 ftwhoas https://doi.org/10.1029/2006PA001294 2022-05-28T22:57:13Z Author Posting. © American Geophysical Union, 2006. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 21 (2006): PA4102, doi:10.1029/2006PA001294. The neodymium isotopic composition of marine precipitates is increasingly recognized as a powerful tool for identifying changes in ocean circulation and mixing on million year to millennial time-scales. Unlike nutrient proxies such as δ13C or Cd/Ca, Nd isotopes are not thought to be altered in any significant way by biological processes, and thus can serve as a quasi-conservative water mass tracer. However, the application of Nd isotopes in understanding the role of thermohaline circulation in rapid climate change is currently hindered by the lack of direct constraints on the signature of the North Atlantic end-member through time. Here we present the first results of Nd isotopes measured in U-Th dated deep-sea corals from the New England seamounts in the northwest Atlantic Ocean. Our data are consistent with the conclusion that the Nd isotopic composition of North Atlantic deep and intermediate water has remained nearly constant through the last glacial cycle. The results address longstanding concerns that there may have been significant changes in the Nd isotopic composition of the North Atlantic end member during this interval, and substantiate the applicability of this novel tracer on millennial time-scales for palaeoceanography research. This study was supported by the Comer Science and Education Foundation and the Vetlesen Foundation Climate Center at L-DEO. Article in Journal/Newspaper North Atlantic Northwest Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Paleoceanography 21 4 |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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English |
description |
Author Posting. © American Geophysical Union, 2006. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 21 (2006): PA4102, doi:10.1029/2006PA001294. The neodymium isotopic composition of marine precipitates is increasingly recognized as a powerful tool for identifying changes in ocean circulation and mixing on million year to millennial time-scales. Unlike nutrient proxies such as δ13C or Cd/Ca, Nd isotopes are not thought to be altered in any significant way by biological processes, and thus can serve as a quasi-conservative water mass tracer. However, the application of Nd isotopes in understanding the role of thermohaline circulation in rapid climate change is currently hindered by the lack of direct constraints on the signature of the North Atlantic end-member through time. Here we present the first results of Nd isotopes measured in U-Th dated deep-sea corals from the New England seamounts in the northwest Atlantic Ocean. Our data are consistent with the conclusion that the Nd isotopic composition of North Atlantic deep and intermediate water has remained nearly constant through the last glacial cycle. The results address longstanding concerns that there may have been significant changes in the Nd isotopic composition of the North Atlantic end member during this interval, and substantiate the applicability of this novel tracer on millennial time-scales for palaeoceanography research. This study was supported by the Comer Science and Education Foundation and the Vetlesen Foundation Climate Center at L-DEO. |
format |
Article in Journal/Newspaper |
author |
van de Flierdt, Tina Robinson, Laura F. Adkins, Jess F. Hemming, Sidney R. Goldstein, Steven L. |
spellingShingle |
van de Flierdt, Tina Robinson, Laura F. Adkins, Jess F. Hemming, Sidney R. Goldstein, Steven L. Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic |
author_facet |
van de Flierdt, Tina Robinson, Laura F. Adkins, Jess F. Hemming, Sidney R. Goldstein, Steven L. |
author_sort |
van de Flierdt, Tina |
title |
Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic |
title_short |
Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic |
title_full |
Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic |
title_fullStr |
Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic |
title_full_unstemmed |
Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic |
title_sort |
temporal stability of the neodymium isotope signature of the holocene to glacial north atlantic |
publisher |
American Geophysical Union |
publishDate |
2006 |
url |
https://hdl.handle.net/1912/1392 |
genre |
North Atlantic Northwest Atlantic |
genre_facet |
North Atlantic Northwest Atlantic |
op_source |
Paleoceanography 21 (2006): PA4102 doi:10.1029/2006PA001294 |
op_relation |
https://doi.org/10.1029/2006PA001294 Paleoceanography 21 (2006): PA4102 https://hdl.handle.net/1912/1392 doi:10.1029/2006PA001294 |
op_doi |
https://doi.org/10.1029/2006PA001294 |
container_title |
Paleoceanography |
container_volume |
21 |
container_issue |
4 |
_version_ |
1766121067132223488 |