Which type of rock is created by intense heat AND pressure?

Metamorphic rock is created by intense heat and pressure because these forces cause the original rocks, such as sedimentary or igneous rocks, to undergo physical and chemical changes. The high temperatures and pressure in the Earth's crust or during tectonic processes cause the minerals within the rocks to recrystallize and rearrange, resulting in the formation of new minerals and textures. This transformation gives rise to the distinct characteristics of metamorphic rocks, including their foliated or non-foliated structures and the presence of minerals like mica, quartz, and feldspar that are often found in these rocks.