Observations of high-velocity, weakly shocked ejecta from experimental impacts

Details Observations of high-velocity, weakly shocked ejecta from experimental impacts Observations of high-velocity, weakly shocked ejecta from experimental impacts

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.363..522g&link_type=abstract

Nature (ISSN 0028-0836), vol. 363, no. 6429, p. 522-524.

Computer Science

19

Computerized Simulation, Ejecta, Hypervelocity Impact, Meteorites, Meteoritic Damage, Aluminum, Metal Plates, Rarefaction, Meteorites, Laboratory Studies, Experiments, Velocity, Impact Effects, Shock Effects, Ejecta, Origin, Source, Planets, Lunar Meteorites, Martian Meteorites, Snc Meteorites, Cratering, Pressure, Hypotheses, Ejection, Escape, Procedure, Comparison, Description, Scaling

Scientific paper

Results are presented from a cratering experiment that separates and captures the ejecta from different regions around the impact site. As predicted, high-velocity/weakly shocked material is recovered. This lends support to the hypothesized lunar or planetary origin of the shergottite, nakhlite, and chassignite achondrite meteorites, whose weakly shocked character is difficult to reconcile with the strong shock metamorphism accompanying impacts of the scale required to eject material from a planet-sized body.

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