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    Temporal stability of the neodymium isotope signature of the Holocene to glacial North Atlantic

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    Additional information (4.593Kb)
    Table S1: Underlying data to calculate the U-series ages of the corals presented in Figures 2 and 3. (2.047Kb)
    Table S2: Underlying Nd isotope data for the corals presented in Figures 2 and 3. (2.292Kb)
    Table S3: Underlying published data to calculate a hypothetical Nd isotopic composition of NADW. (1.820Kb)
    Date
    2006-11-25
    Author
    van de Flierdt, Tina  Concept link
    Robinson, Laura F.  Concept link
    Adkins, Jess F.  Concept link
    Hemming, Sidney R.  Concept link
    Goldstein, Steven L.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/1392
    As published
    https://doi.org/10.1029/2006PA001294
    DOI
    10.1029/2006PA001294
    Abstract
    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.
    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.
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    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Paleoceanography 21 (2006): PA4102
     
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