A metamorphic rock is a result of a transformation of a pre-existing rock. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes.
Metamorphic rocks are formed by complete change of texture of rocks through volcanism and diastrophism e.g. limestone is converted to marble and shale is transformed to slate.
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Answer:
A metamorphic rock is a result of a transformation of a pre-existing rock. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes.
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Metamorphic rocks are formed by complete change of texture of rocks through volcanism and diastrophism e.g. limestone is converted to marble and shale is transformed to slate.
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