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History
Impactite
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Impactite is rock created or modified by one or more impacts of a meteorite. Impactites are considered metamorphic rock, because their source materials were modified by the heat and pressure of the impact. On Earth, impactites consist primarily of modified terrestrial material, sometimes with pieces of the original meteorite.
An example of impactite on Earth (from Monturaqui impact crater, Chile)
An example of impactite on Earth (from Monturaqui impact crater, Chile)
Impact breccia from the Kara impact structure in Russia
Impact breccia from the Kara impact structure in Russia
Alga crater on Mars is a possible site for preserved ancient life, after detection of an impact glass deposit.
Alga crater on Mars is a possible site for preserved ancient life, after detection of an impact glass deposit.
Shock metamorphism
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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 s
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.
Shatter cones developed in fine grained dolomite from the Wells Creek crater, USA.