1. Metamorphic Rock

2. Definition of Metamorphic Rocks
Metamorphic rocks are formed when existing rocks are changed into a new rock because of heat, pressure, or chemical change
Pressure
Heat

3. Types of Metamorphism

4. Regional Metamorphism
Occurs over a wide area.
The heat and pressure are created at convergent boundaries where plates are colliding
Usually produces foliated rocks

5. Contact Metamorphism
A rock’s mineral and texture changes when the rock comes into contact with a magma chamber
Change caused mainly by heat
Creates mainly non-foliated rocks

6. Contact Metamorphism

7. Types of Metamorphic Rocks
Foliated Rocks metamorphic rocks formed under great pressure where the new minerals are aligned into bands
Non-Foliated Rocks
metamorphic rocks formed under lower heat and pressure where the minerals are not aligned into bands

8. Foliated Rock Examples
Parent Rock: Shale
Daughter Rock: Slate

9. Foliated Rock Examples
Parent Rock: Granite
Daughter Rock: Gneiss

10. Foliated Rock Examples
Parent Rock: Sandstone
Daughter Rock: Schist

11. Non-Foliated Rock Examples
Parent Rock: Limestone
Daughter Rock: Marble

12. Non-Foliated Rock Examples
Parent Rock: Sandstone
Daughter: Quartzite