Pseudotachylites Generated in Shock Experiments: Implications for Impact Cratering Products and Processes

Details Pseudotachylites Generated in Shock Experiments: Implications for Impact Cratering Products and Processes Pseudotachylites Generated in Shock Experiments: Implications for Impact Cratering Products and Processes

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sci...270..281f&link_type=abstract

Science, Volume 270, Issue 5234, pp. 281-283

Physics

14

Scientific paper

Laboratory hypervelocity impact experiments in which quartz was shock-loaded from 42 to 56 gigapascals imply that type A pseudotachylites form by strain heating and contribute to the loss of strength of rocks in the central uplift of large impact structures. Shock impedance-matched aluminum sample containers, in contrast to steel containers, produced nearly single-wave pressure loading, and enhanced deformation, of silicate samples. Strain heating may act with shock heating to devolatilize planetary materials and destroy extraterrestrial organic material in an impact.

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