Describe the process of formation of metamorphic rocks.
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Metamorphic rocks are created by the physical or chemical alteration by heat and pressure of an existing igneous or sedimentary material into a denser form. ... As a consequence, metamorphic rocks are always more dense than their original material, and also much less susceptible to erosional breakdown.
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Metamorphic rocks are created by the physical or chemical alteration by heat and pressure of an existing igneous or sedimentary material into a denser form. ... The sheer weight of the material above it can cause the rock to undergo metamorphism.
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