Chapter 9. Metamorphic Rocks

After reading the chapter and attending all lectures and viewing the films, you should be able to:
1. list the types of rocks which may become metamorphic rocks.
2. list and discuss the major agents of metamorphism: heat, pressure, and chemically active fluids.
3. distinguish between lithostatic and compressional stress. Which of these is most responsible for the characteristic foliation of many metamorphic rocks?
4. describe and distinguish between the types of metamorphism: regional, contact, shear, burial, and shock.
5. give examples of parent rocks (protoliths) and the metamorphic rocks formed from them.
6. give examples of typical foliated and non-foliated metamorphic rocks.
7. discuss the typical types of rocks associated with contact and regional metamorphism.
8. explain the use of index minerals to give clues about the metamorphic history of a rock or area.
9. define the concept of metamorphic facies.
10. generally discuss the relationship between metamorphism and plate tectonics.
Critical Thinking Questions and Activities:
1. If increasing pressure and temperature can transform a shale into a gneiss, do you think it is possible to convert a gneiss into a shale by decreasing temperature and pressure?