Rock Cycle

Igneous rocks are formed from the solidification of magma. The weathering and erosion of igneous rocks create sediments. When sediments compact, they form sedimentary rocks. When sedimentary rocks heat up and pressure is forced upon them, they form metamorphic rocks. When igneous rocks heat up and pressure is exerted upon them, they can also form metamorphic rocks.

When tectonic plates move, magma is released through the cracks. This forms igneous rocks. These rocks go through the rock cycle like it would do on the surface of Earth. The formation of igneous rocks also causes more magma to flow in, and therefore causing the plates to move more.