dynamic metamorphism
Quick Summary
Dynamic metamorphism, also known as cataclasis, is a geological process primarily driven by mechanical deformation and shear movements, often occurring along fault planes. Unlike other forms of metamorphism, it involves minimal long-term temperature change. The intense grinding and stress can break down existing rock grains or realign minerals, leading to textures ranging from shattered rock fragments to finely granulated or powdered rocks. In extreme cases, friction generated during dynamic metamorphism can even cause localized melting. This type of metamorphism is distinct from contact metamorphism, which is driven by heat, and regional metamorphism, which involves widespread changes in temperature and pressure.123
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- metamorphism
Dynamic metamorphism, or cataclasis, results mainly from mechanical deformation with little long-term temperature change. Textures produced by such adjustments range from breccias composed of angular, shattered rock fragments to very fine-grained, granulated or powdered rocks with obvious foliation and lineation. Large, pre-existing mineral grains may…
Read MoreDynamic metamorphism, or cataclasis, results mainly from mechanical deformation with little long-term temperature change. Textures produced by such adjustments range from breccias composed of angular, shattered rock fragments to very fine-grained, granulated or powdered rocks with obvious foliation and lineation. Large, pre-existing mineral grains may…
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metamorphic rockDynamic metamorphismWhen directed pressure or stress is the dominant agent of metamorphism, it is termed dynamic; other terms are dislocation, kinematic, and mechanical metamorphism. Mineralogical changes occurring on a fault plane provide an obvious example. In some such cases, the action may simply be…
Read MoreWhen directed pressure or stress is the dominant agent of metamorphism, it is termed dynamic; other terms are dislocation, kinematic, and mechanical metamorphism. Mineralogical changes occurring on a fault plane provide an obvious example. In some such cases, the action may simply be…
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