2. Metamorphic Rock Metamorphism: Changing of one type of rock to another by: Heat Pressure Chemical reactions Metamorphism makes rocks stronger or more resistant

3. Contact Metamorphism l hot magma pushes through existing rock, heating surrounding rock and changing it to metamorphic.

4. Classification of Metamorphic rock Foliated & Non-foliated

5. Foliated Rocks: §Have visible layers §Mineral grains are flattened and aligned when pressure is added PRESSURE

6. Gneiss has banded foliation Granite Gneiss

8. Slate has banded foliation Shale Slate

11. Schist has banded foliation

12. Non-foliated Rocks: §These DO NOT have layers of crystals.

13. Quartzite has no foliation (layers) SandstoneQuartzite

15. Marble has no foliation (layers) Limestone Marble

16. §Finished Marble §Unfinished Marble

17. For centuries marble has been used as a strong building material. It has been used to create grand buildings, sculpted statues and tombstones that have lasted for centuries