Composition of the earth's upper mantle. II - Volatile trace elements in ultramafic xenolithsRadiochemical neutron activation analysis was used to determine the nine volatile elements Ag, Bi, Cd, In, Sb, Se, Te, Tl, and Zn in 19 ultramafic rocks, consisting mainly of spinel and garnet lherzolites. A sheared garnet lherzolite, PHN 1611, may approximate undepleted mantle material and tends to have a higher volatile element content than the depleted mantle material represented by spinel lherzolites. Comparisons of continental basalts with PHN 1611 and of oceanic ridge basalts with spinel lherzolites show similar basalt: source material partition factors for eight of the nine volatile elements, Sb being the exception. The strong depletion of Te and Se in the mantle, relative to lithophile elements of similar volatility, suggests that 97% of the earth's S, Se and Te may be in the outer core.
Document ID
19820038730
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Morgan, J. W. (Geological Survey Reston, VA, United States)
Wandless, G. A. (Geological Survey Reston, VA, United States)
Petrie, R. K. (U.S. Geological Survey Reston, VA, United States)
Irving, A. J. (Washington, University Seattle, WA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Subject Category
Geophysics
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Start Date: March 17, 1980
End Date: March 21, 1980
Accession Number
82A22265
Funding Number(s)
CONTRACT_GRANT: NASW-3389 CONTRACT_GRANT: NSF EAR-79-11120 CONTRACT_GRANT: NASA ORDER T-4089-F