metamorphic rocks are also called altered or changed rocks give reason
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Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
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Metamorphic Rocks are rocks have changed form due to heat and pressure. Metamorphic comes from the Greek words meta and morph. ... So we get metamorphic meaning to change form. Metamorphic rocks were once sedimentary, igneous or even other metamorphic rocks that have been changed by heat and pressure. hence they are called altered or changed rocks.
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