Question

What happens to igneous and sedimentary rocks when they are subjected to great heat and pressure?​

Answer 1

Answer:

When both an igneous rock and sedimentary go under extreme heat and pressure this causes them to form into a metamorphic rock.... If for instance the igneous rock goes under heat and pressure it will become a metamorphic rock, same as the sedimentary but if they are both melted they become magma once again.

Explanation:

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Answer 2

Answer:

Sedimentary rocks were originally sediments, which were compacted under high pressure. Igneous rocks formed when liquid magma or lava—magma that has emerged onto the surface of the Earth—cooled and hardened. ... If there is too much heat or pressure, the rock will melt and become magma.