how are metamorphic rocks formed?
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“Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means “change in form”.The original rock is subjected to heat (temperatures greater than 150 to 200 °C) and pressure causing profound physical and/or chemical change.
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metamorphic rocks are formed when rocksare close to some molten magma, and so get heated up. Remember thatmetamorphic rocks are notmade from melting rock. (Rocks that do melt form igneous rocks instead.)
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