Exam 8: Metamorphism and Metamorphic Rocks

What major change occurs during metamorphism of limestone to marble?

_________is characterized by the segregation of light- and dark- colored minerals into thin layers or bands.

Is the texture of a metamorphic rock always indicative of the conditions (degree of metamorphism)under which it formed? (Hint: Think about the protolith and how it may influence the resulting metamorphic rock.)

Which of the following environments would exhibit sheared and mechanically fragmented rocks?

What is the major source of heat for contact metamorphism?

_________is typically formed by metamorphism of a sandstone.

Which of the following forms at the highest grade of regional metamorphism?

Which of the following is not connected or involved with shock metamorphism?

Foliation in metamorphic rocks is mainly evident in the parallel alignment of certain mineral grains. What are they?

In which setting would regional metamorphism be most likely?

List the three most important agents of metamorphism.

Which rock has the finest grain size?

Amphibolite is a foliated metamorphic rock composed principally of hornblende and plagioclase. It forms_________ .

What type of sedimentary rock is typically metamorphosed to form slates or phyllites?

Which type of metamorphism occurs specifically in the heated zone around a pluton or other body of magma?

Is it always possible to determine the original parent rock (called a protolith)prior to metamorphism? Why or why not? List three protoliths and give a possible metamorphic equivalent for each one.

Briefly outline how regional metamorphism is related to plate boundaries. Are certain types of metamorphic rocks indicative of particular plate boundaries or tectonic settings? Give two or three examples of such rocks and indicate the tectonic environment they represent.

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

_________is a strong, parallel alignment of coarse mica flakes and/or of different mineral bands in a metamorphic rock.