1. Metamorphic Rock

2. Metamorphic Rock Change from one type of rock to metamorphic
Done by extreme heat and pressure
Can cause change in size, shape, or appearance of minerals
Occurs deep in the crust

3. Two Types of Metamorphism
Contact
And
Regional

4. Contact Metamorphism Rocks changed by contact of magma
Can change structure and composition when in contact with magma

5. Regional Metamorphism
Due to tectonic activity
Occurs at plate boundaries
Most metamorphic rock is formed by this method

6. Foliated vs Nonfoliated
Classification
Foliated vs Nonfoliated

7. Foliated Metamorphic Rock
Minerals may be flattened into bands
Minerals may be separated by density showing light and dark bands

8. Non foliated Metamorphic Rock
No visible signs of layer or bands

9. Metamorphic examples
Quartzite
From sandstone
Marble
From limestone

10. Gneiss
From Schist