Impact crater
Videos
An impact crater is a depression in the surface of a solid astronomical body formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or int
500-kilometre-wide (310 mi) crater Engelier on Saturn's moon Iapetus
Recently formed (between July 2010 and May 2012) impact crater on Mars showing a pristine ray system of ejecta
50,000-year-old Meteor Crater east of Flagstaff, Arizona, U.S. on Earth
Eugene Shoemaker, pioneer impact crater researcher, here at a crystallographic microscope used to examine meteorites
Shock metamorphism
Videos
Shock metamorphism or impact metamorphism describes the effects of shock-wave related deformation and heating during impact events.
Shocked quartz with two sets of ‘decorated’ planar deformation features in impact melt rock from the Suvasvesi South impact structure, Finland (thin section photomicrograph, plane polarized light).
Shatter cones developed in fine grained dolomite from the Wells Creek crater, USA.
Pingualuit aerial 2007