Chapter 7

Question 1

Define metamorphic rocks. How can they form?

Answer 1

-Metamorphic rock: Any Rock that has been changed from its original condition by heat pressure and the chemical activity of fluids

Question 2

What is metamorphism? What are three principal agents of metamorphism?

Question 3

Discuss how heat is important to metamorphism. Where does most metamorphism occur?

Question 4

What is lithostatic? (confining pressure) and differential pressure? How do they differ? what influence did they have in terms of metamorphic minerals that result?

Question 5

What are the three primary sources of chemically active fluids?

Question 6

List and discuss the three types of metamorphism. What is an aureole? What is a mylonite?

Question 7

Define regional metamorphism. Where is it most obvious?

Question 8

Most metamorphic rocks results from which type of metamorphism?

Question 9

Define index mineral and metamorphic grade

Question 10

Discuss how the presence of index minerals allows geologist to determine metamorphic grade

Question 11

What is a foliated texture?

Question 12

List and discuss foliated metamorphic rocks starting at low grade metamorphism and going to high grade metamorphic grade. Define slaty cleavage, phyllitic lusted, and schistosity (schostose foliation)

Question 13

Define amphibolite and migmatite

Question 14

What is non-foliated texture?

Question 15

Define marble, quartzite, greenstone, hornfels, and anthracite

Question 16

Explain the difference between metamorphic zones and facies. What are isograds?

Question 17

Discuss the relationship between plate tectonics and metamorphism

Question 18

Explain how various types of natural resources are the result from metamorphism