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RTcosmochronology
 cratering
 denudation
 erosion rates
 erosion surfaces
 exposure age
 extraterrestrial geology
 geochronology
 impact craters
 impact features
 landform evolution
 meteor craters
 planetology
 regolith
 relative age
 surface features
SNGenerally used for impact erosion and/or depositional processes on extraterrestrial planetary bodies on a global scale. Also index cratering if applicable. Added to Thesaurus in 1995.