Question

4. How are metamorphic rocks formed?​

Answer 1

Explanation:

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.

Answer 2

When igneous or sedimentary rocks are subjected to extreme heat and pressure, they undergo a complete change in their form and characteristic. Such rocks are called metamorphic rocks.

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