Shock metamorphism

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.

Shock metamorphism or impact metamorphism describes the effects of shock-wave related deformation and heating during impact events. The formation of similar features during explosive volcanism is generally discounted due to the lack of metamorphic effects unequivocally associated with explosions and the difficulty in reaching sufficient pressures during such an event.

单词	Shock metamorphism
释义	Shock metamorphism 原声例句《国家地理》阅读精选 Shock metamorphism has happened often on Mars, but there's also evidence for metamorphism that's a bit like a cooler, gentler version of what can happen on Earth. 冲击变质作用在火星上经常发生，但也有证据表明，火星上的变质作用有点像地球上发生的更冷更温和的变质作用。英语百科 Shock metamorphism Shock metamorphism or impact metamorphism describes the effects of shock-wave related deformation and heating during impact events. The formation of similar features during explosive volcanism is generally discounted due to the lack of metamorphic effects unequivocally associated with explosions and the difficulty in reaching sufficient pressures during such an event.
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