Exam 7: Metamorphism and Metamorphic Rocks

Describe the occurrence of metamorphism along an oceanic-continental convergent plate boundary.

Foliated metamorphic rocks form when pressure is applied:

Metamorphism is most common along ____________________ plate boundaries.

What is an isograd?

____________________ and ____________________ are two different types of pressures to which rocks can be subjected that can cause metamorphism.

Sillimanite is a(n) ____________________-temperature, ____________________-grade metamorphic mineral.

Describe the occurrence of metamorphism along a divergent plate boundary.

What are some examples of foliated metamorphic rocks?

How are foliated metamorphic rocks classified? Describe some of the rock types found at different grades of foliated metamorphic rocks.

The most important fluid promoting metamorphism is ____________________.

The pressure exerted on rocks by the weight of overlying rocks is called ____________________ pressure. With this type of pressure, the stress on the rock is the ____________________ in all directions.

What is a metamorphic facies and how are metamorphic facies named?

What is the significance of foliation in a metamorphic rock? (Not what is foliation, but what does it mean in terms of the rock's history?)

Metamorphic rocks can indicate the physical conditions that once existed in a geological setting.

Metamorphism can be caused by increased temperatures. How are temperatures raised geologically to bring about metamorphism?

The various colors of slate result from differing intensities of deformation.

What is lithostatic pressure?

What are index minerals and their importance? Give an example of minerals that would be found in low-grade, intermediate, and high-grade metamorphosed shale.

What are some uses of metamorphic rocks, such as marble, slate, talc, graphite, and clay?

What is a metamorphic zone?