Metamorphic Rocks

Metamorphic rocks have been changed over time by extreme pressure and heat.

Metamorphic comes from the ancient Greek words, “meta” (meaning change) and “morphe” (meaning form).

There are two types of metamorphic rocks. They are foliated metamorphic rocks and non-foliated metamorphic rocks.

Metamorphic rocks can also be formed from other metamorphic rocks.

Most of the Earth’s crust is made up of metamorphic rock.