Rhenium-osmium isotope systematics of ordinary chondrites and iron meteoritesUsing negative thermal ionization mass spectrometry, Re and Os abundances were determined by isotope dilution and Os-187/Os-186 measured in 11 ordinary chondrites, and also in 1 IIB and 3 IIIB irons. In addition, Os-186/Os-188 and Os-189/Os-188 ratios were precisely determined for 3 unspiked ordinary chondrites as a means of constraining the intensity of any neutron irradiation these meteorites may have experienced.
Walker, R. J. (Maryland Univ. College Park, MD, United States)
Morgan, J. W. (Geological Survey Reston, VA., United States)
Horan, M. F. (Geological Survey Reston, VA., United States)
Grossman, J. N. (Geological Survey Reston, VA., United States)
September 6, 2013
January 1, 1993
Publication: Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z
Work of the US Gov. Public Use Permitted.
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