A type of rock that forms under high temperature and pressure but is not exposed to enough heat to melt the rock

The type of rock that forms under high temperature and pressure but is not exposed to enough heat to melt the rock is called Metamorphic Rock.

Here are the steps of how it forms:

1. Sedimentary or igneous rocks are subjected to intense heat and pressure conditions. This can occur due to geological processes such as tectonic plate movements or the intrusion of magma into the Earth's crust.

2. Under these conditions, the original rock (known as the parent rock) undergoes physical and chemical changes. The minerals within the rock may align themselves in layers or bands, and new minerals may form from the existing ones.

3. The process does not melt the rock. Instead, it transforms the rock into a denser, more compact form.

4. Over time, these changes result in the formation of metamorphic rocks. Examples of metamorphic rocks include slate, marble, and quartzite.