NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
An Ordinary Chondrite Impactor Composition for the Bosumtwi Impact Structure, Ghana, West Africa: Discussion of Siderophile Element Contents and Os and Cr Isotope DataOsmium isotope data had shown that Ivory Coast tektites contain an extraterrestrial component, but do not allow distinction between chondritic and iron meteorite contamination. PGE abundances of Ivory Coast tektites and impactites and target rocks from the Bosumtwi crater, the source crater of the Ivory Coast tektites, were all relatively high and did not allow to resolve the presence, or identify the nature, of the meteoritic component. However, Cr isotope analyses of an Ivory Coast tektite yielded a distinct 53Cr excess of 0.30+/-0.06, which indicates that the Bosumtwi impactor was an ordinary chondrite.
Document ID
20040058078
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Koeberl, Christian
(Wien Univ. Austria)
Shukolyukov, Alex
(Scripps Institution of Oceanography La Jolla, CA, United States)
Lugmair, Guenter
(Scripps Institution of Oceanography La Jolla, CA, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Effects of Impacts: Shock and Awe
Subject Category
Geophysics
Distribution Limits
Public
Copyright
Public Use Permitted.
Document Inquiry

Available Downloads

There are no available downloads for this record.
No Preview Available