impact metamorphism
Impact metamorphism involves ultrahigh compression that results either from the impact of an extraterrestrial object, such as a meteorite (bolide) or during an extremely violent volcanic eruption.
Impact metamorphism is characterized by ultrahigh pressure conditions and low temperature, and produces characteristic high-pressure textures and minerals, such as SiO2 polymorphs coesite and stishovite.
Impact metamorphism is characterized by ultrahigh pressure conditions and low temperature, and produces characteristic high-pressure textures and minerals, such as SiO2 polymorphs coesite and stishovite.
Labels: bolide, coesite, compression, impact metamorphism, meteorite, polymorphs, stishovite