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Geochemical Constraints on Core Formation in the EarthNew experimental data on the partitioning of siderophile and chalcophile elements among metallic and silicate phases may be used to constrain hypotheses of core formation in the Earth. Three current hypotheses can explain gross features of mantle geochemistry, but none predicts siderophile and chalcophile element abundances to within a factor of two of observed values. Either our understanding of metal-silicate interactions and/or our understanding of the early Earth requires revision.
Document ID
20000040791
Acquisition Source
Johnson Space Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1038/322221a0
Authors
Jones, John H. (Arizona Univ. Tucson, AZ United States)
Drake, Michael J. (Arizona Univ. Tucson, AZ United States)
Date Acquired
September 7, 2013
Publication Date
July 17, 1986
Publication Information
Publication: Nature
Volume: 322
Subject Category
Geophysics
Meeting Information
Meeting: Geology Coloquium at Arizona State University
Location: Tempe, AZ
Country: United States
Start Date: April 19, 2000
Funding Number(s)
PROJECT: RTOP 344-31-00-05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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