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What forms by contact metamorphism of mudstones and shales?

April 26, 2017contact forms metamorphism shales

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What forms by contact metamorphism of mudstones and shales?

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Contact metamorphism takes place locally near igneous intrusions. It is caused by low to moderate pressure, intense heat, and reactions to magma that is being metamorphosed. When contact metamorphism takes place with mudstone or shale (sedimentary rocks) slate is formed. The mudstone or shale is the parent rock or protolith.