Physics
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992metic..27..361m&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 27, no. 4, p. 361-370.
Physics
32
Hypervelocity Projectiles, Impact Melts, Meteorite Craters, Meteoritic Composition, Fractionation, Petrography, Saudi Arabia
Scientific paper
Results are presented from the analyses of small ballistically dispersed melt samples (occurring in the form of aerodynamically shaped spheres, dumbbells, and teardrops) from the Wabar Crater (Saudi Arabia) and of melts from the Wabar and Nejed meteorites. On the basis of the data obtained and of models for crater forming processes it is concluded that the ballistically-dispersed glasses were formed from material at shallow levels in the target zone where temperatures were higher and where intimate physical contact with the disrupting impactor was achieved. Siderophile element fractionation was completed early, while the impactor was undergoing decompression and prior to mixing with the target glasses.
Hoerz Friedrich
Mittlefehldt David W.
See Thomas H.
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