Metamorphic Rocks

Metamorphic Rocks

Metamorphic rocks form when existing rocks are changed by heat, pressure, or chemical processes deep inside the Earth. These changes do not melt the rock but cause new minerals to form and rearrange. Rocks like shale can become slate, and limestone can become marble. The origin...

Metamorphic rocks originate from other rocks, including igneous, sedimentary, or earlier metamorphic forms.

When rocks are buried at greater depths within the Earth or lie near hot magma, they encounter conditions that cause them to change. These changes can be physical, like the formation of layers under extreme pressure, or chemical, suc...