1. Metamorphic Rock

2. “Changed” rock that forms deep under the Earth
Texture and composition of a sedimentary or igneous or other metamorphic rock gets changed by heat and pressure

4. HOW?
Rock gets close to magma
This is called CONTACT metamorphism

5. Also . . . Enormous pressure when the Earth’s crust collides
Called REGIONAL Metamorphism

6. Gneiss( say ‘nice’ !)

7. Minerals Change…
Calcite, Quartz and Hematite change into GARNET

9. Textures: Foliated mineral grains banded, aligned
Nonfoliated minerals crystals are larger, not aligned;
they appear shiny

10. Foliated: slate, schist, gneiss
Examples…
Foliated: slate, schist, gneiss

11. Slate

12. Schist

13. Gneiss

14. Nonfoliated
Marble,
quartzite (is very common)

15. Marble

16. Quartzite

17. Learn these changes Shale  slate  gneiss Limestone  marble
Sandstone  quartzite
Coal  Anthracite Coal

18. Homework 
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