Are some chondrule rims formed by impact processes? - Observations and experiments

Details Are some chondrule rims formed by impact processes? - Observations and experiments Are some chondrule rims formed by impact processes? - Observations and experiments

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...91...76b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 91, May 1991, p. 76-92.

Other

19

Chondrule, Hypervelocity Impact, Meteorite Craters, Meteoritic Microstructures, Regolith, Olivine, Petrography, Pyroxenes, Solar System Evolution

Scientific paper

The ability of high-speed impacts into a parent body regolith to account for the textures and compositions observed for rims on some chondrules is presently supported by both observational and experimental data. Experimental results obtained with a light-gas gun encompass recovered-grain characteristics ranging from fragmented projectile grains mixed with melted aerogel, demonstrating that rim-like thermal and mechanical alterations of projectiles may be due to a high-velocity encounter with a low density target. Irrespective of conclusions for other types of rims, granular and opaque rim characteristics seem inconsistent with nebular condensation.

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