Shatter Cones in Cryptoexplosion Structures (Meteorite Impact

摘要: Shatter cones (striated percussion fracture cones), apparently formed by explosive percussion, are known only from four cryptoexplosion (i.e., "cryptovolcanic") structures, viz., Steinheim Basin, Wells Creek the Kentland deformation, and Crooked structure. The nature of these shatter their orientation at localities described. It is concluded that may be a useful criterion for establishing structures damped-wave type probably hypervelocity impact large meteorites. In any event, it hoped this paper will draw attention to unusual so geologists on lookout them in small, highly deformed, circular structures.