How would igneous rock become metamorphic rock?

any rock can be turned into a metamorphic rock, If rocks are buried deep in the Earth at high temperatures and pressures they can become minerals.

Any rock (igneous, sedimentary, or metamorphic) can become a metamorphic rock. If rocks are buried deep in the Earth at high temperatures and pressures, they form new minerals and textures all without melting. If melting occurs, magma is formed, starting the rock cycle all over again.

Explanation:

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