Metamorphic Rock
A metamorphic rock is a type of rock that forms from an existing rock that is changed by heat, pressure, and /or chemical reactions.Metamorphic rocks are rocks that are made up of Igneous, Sedimentary, or other METAMORPHIC rocks. Metamorphic rocks are completely different when the rock is finished being heated and pressured. Limestone and marble and limestone are one of the most common metamorphic rocks.