Problem 15
How does cross-bedding form?
Problem 16
What is metamorphism? What factors cause metamorphism?
Problem 17
What kinds of changes occur in a rock as it is metamorphosed?
Problem 18
What is metamorphic foliation? How does it differ from sedimentary bedding?
Problem 19
How do contact metamorphism and regional metamorphism differ, and how are they similar?
