which kind of rock requires heat and pressure to form?

The kind of rock that requires heat and pressure to form is metamorphic rock.

What metamorphic rock is

• Metamorphic rock forms when an existing rock (sedimentary, igneous, or even another metamorphic rock) is changed by high heat and pressure inside Earth without fully melting.

• These conditions cause the minerals to recrystallize and rearrange, creating a new texture and sometimes new minerals.

How heat and pressure work

• Heat (usually above about 150–200 °C) provides energy for minerals to change, often near magma or deep in the crust.

• Pressure from the weight of overlying rocks or from colliding tectonic plates squeezes and deforms the rock, helping produce the metamorphic structure.

Common examples

• Typical metamorphic rocks include slate, schist, gneiss, marble, and quartzite.

• For example, limestone can change into marble, and shale can change into slate under enough heat and pressure.

Information gathered from public forums or data available on the internet and portrayed here.