FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 7: Metamorphism and Metamorphic Rocks

Show Answer

Share

---

All types

Filters

Study Flashcards

Question 31

Essay

Review LaterAdd Note

Review Later

What is the role of heat as an agent of metamorphism? What are the heat sources available for the formation of metamorphic rocks?

Correct Answer

verified

Heat increases the rate of chemical reac...

View Answer

Show Answer

Question 32

Essay

Review LaterAdd Note

Review Later

Some of the oldest known rocks, which have been dated at about 4.0 billion years, are metamorphic. What does this tell us about the age of Earth?

Correct Answer

verified

Earth must be older than 4.0 b...

View Answer

Show Answer

Question 33

Multiple Choice

Review LaterAdd Note

Metamorphic rocks may form from:

A rock with segregated light and dark bands, containing the minerals quartz, feldspar, hornblende, and mica, is a(n) ____________________ gneiss.

What is the parent rock for the following metamorphic rocks: marble: ____________________; anthracite: ____________________; quartzite: ____________________; slate: ____________________; schist: ____________________; and greenstone: ____________________.

What is metamorphic grade? Present an example of how a rock reaches its metamorphic grade.

What is the difference between slate and phyllite?

Metamorphic rocks can represent the chemical changes that have occurred at various depths.

One plate tectonic process that causes very widespread metamorphism is ____________________.

Metamorphic rocks are very common in the crystalline basement rocks of the oldest parts of continents.

Contact metamorphism along sills and dikes may produce metamorphosed zones many kilometers wide.

What is a metamorphic facies?

Foliated metamorphic rocks are further classified on the basis of what observable properties?

What causes dynamic metamorphism and where is it found?

Aureoles surrounding felsic bodies will contain higher-temperature metamorphic minerals than mafic magmas.

Metamorphism at an oceanic-continental convergent plate boundary where temperatures are low and pressures are high results in rocks typical of the ____________________ facies.

The type of metamorphism that occurs over large areas, commonly at convergent plate margins, and is responsible for the production of most metamorphic rocks is ____________________.

Metamorphic rocks indicate that an even older parent rock once existed in that place.

What are metamorphic zones based on? How are rocks within the same metamorphic zone similar to each other?

How are metamorphic rocks classified? What are the two main classifications, and how are they different from each other?