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Neodymium isotopic variations in seawaterDirect measurement of the isotopic composition of Nd in the Atlantic agree with the Nd content in ferromanganese sediments and differ from the observed amounts in the Pacific samples. These data indicate the existence of distinctive differences in the isotopic composition of Nd in the waters of major oceans; the average values determined from seawater and ferromanganese sediments are considerably lower than in sources with oceanic mantle affinities showing that the REE in the oceans is dominated by continental sources. The Nd isotopic variations in seawater are applied to relate the residence time of Nd and mixing rates between the oceans.
Document ID
19810028799
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)
Date Acquired
August 11, 2013
Publication Date
October 1, 1980
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 50
Issue: 1, Oc
Subject Category
OCEANOGRAPHY
Funding Number(s)
CONTRACT_GRANT: NSF PHY-76-83685
CONTRACT_GRANT: NGL-05-002-188
Distribution Limits
Public
Copyright
Other