Definition
Shock metamorphism is the production of irreversible chemical or physical changes in target materials as a result of the passage of shock waves generated from hypervelocity impact events.
Introduction
Natural shock metamorphism is the physical consequence of hypervelocity impact of a projectile (e.g., asteroids and comets) into solid target rock, sediment, and regolith exposed on planetary bodies (Stöffler et al. 2018). During passage of the shockwave generated from the impact event, the increase in internal energy accompanying shock compression and subsequent rarefaction results in a unique set of irreversible deformation effects, referred to as shock metamorphic effects, as well as melting and/or vaporization of a volume of target material close to the point of impact (French and Koeberl 2010; Ferrière and Osinski 2013).
Detailed investigation of shock metamorphic effects in geologic materials dates back to 1950s (e.g., Chao et al. 1960, Chao 1967); although the glassy...
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Xie, T., Osinski, G.R. (2023). Shock Metamorphism. In: Cudnik, B. (eds) Encyclopedia of Lunar Science. Springer, Cham. https://doi.org/10.1007/978-3-319-14541-9_189
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DOI: https://doi.org/10.1007/978-3-319-14541-9_189
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