Metamorphic Rocks
5 important questions on Metamorphic Rocks
What is metamorphic grade ?
Is metamorphic state always liquid and igneous state solid?
What is contact metamorphism?
- low pressure
- crystal is typically dark, fine grained, hornfelds, with porphyroblasts
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What is subduction metamorphism?
- low temperature
- blueshist rocks
What is regional metamorphism?
- high pressure
- convergence and collision to produce mountain building
- (metamorphic grade increases)
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