What kind of rock is formed when existing rock types are changed by heat and pressure?
Detailed Explanation
The kind of rock that is formed when existing rock types are changed by heat and pressure is called metamorphic rock. Metamorphic rocks are formed when rocks are subjected to high temperatures and pressures, which can cause the rocks to change their mineral composition, texture, and structure.

The amount of heat and pressure required to form metamorphic rocks varies depending on the type of rock and the environment in which it is formed. For example, metamorphic rocks that form deep within the Earth will be subjected to higher temperatures and pressures than those that form near the surface.
The different types of metamorphic rocks are classified according to their texture and mineral composition.
Metamorphic rocks are an important part of the Earth's crust and play a role in many geological processes. They are also used in a variety of applications, such as construction, flooring, and jewelry.
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