Metamorphic Rocks

Metamorphic Rock Formation: Earth movements can push all types of rock deeper into the Earth. These rocks are then subjected to massive temperatures and pressures, causing the crystalline structure and texture to change. They do not become liquid, but become molten.

Metamorphic Rock Identification: Hard rocks Foliated bands of fused minerals Crystalline structure with fused edges Movement of the Earth’s lithospheric plates cause the heating and squeezing conditions that form metamorphic rocks.

Common Metamorphic Rock Slate

Common Metamorphic Rock Gneiss