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The isotopic composition of Nd in different ocean massesThe paper examines the isotopic composition of Nd in marine environments. The Sm-Nd data for authigenic ferromanganese sediments indicate that the Atlantic, Pacific, and Indian Oceans have a distinct range in Nd isotopic composition characteristics of each ocean basin and reflect the dissolved load of Nd in the water mass. Measurements of the Nd isotopic seawater composition of seawater indicate that the rare earth elements (REE) in ferromanganese sediments are derived by direct precipitation of these elements out of seawater. It is believed that the Nd isotopic variations in these sediments represent true variations in the dissolved Nd isotopic composition which reflect the age and (Sm-147)/(Nd-144) ratios of the continental masses sampled believed to be the major source of REE in seawater.
Document ID
19800035998
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Piepgras, D. J.
(California Inst. of Tech. Pasadena, CA, United States)
Wasserburg, G. J.
(California Institute of Technology Pasadena, Calif., United States)
Dasch, E. J.
(Oregon State University Corvallis, Ore., United States)
Date Acquired
August 10, 2013
Publication Date
November 1, 1979
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 45
Issue: 2
Subject Category
Oceanography
Accession Number
80A20168
Funding Number(s)
CONTRACT_GRANT: NSF PHY-76-02724
CONTRACT_GRANT: NSF OCE-77-11101
CONTRACT_GRANT: NSF GX-28675
CONTRACT_GRANT: GSA-2382-78
CONTRACT_GRANT: NGL-05-002-188
Distribution Limits
Public
Copyright
Other

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