Exam 7: Metamorphism and Metamorphic Rocks

What are the sources of the heat,pressure,and fluids that cause rocks to metamorphose?

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 ____________________.

Which of the following correctly lists metamorphic mineral assemblages in order of decreasing temperature/pressure of formation?

The type of metamorphism that typically produces the hard,dense,fine-grained rocks called mylonites is called ____________________.

The type of metamorphism that is common in fault zones,in which rocks are subjected to high differential pressures,is called:

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 are index minerals,and what are they used for? Give an example of minerals that would be found in a low-grade,intermediate,and high-grade metamorphosed shale.

As the plate subducts until it begins to melt,it generates ____________________,which rises and causes ____________________ metamorphism.

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

What are some types of ore deposits that have formed in association with contact metamorphism?

If rocks of a certain facies are found in an outcrop,it is possible to know where within a convergent plate boundary those rocks formed.

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

Divergent plate boundaries are characterized by:

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

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

What are three possible sources of the water and other fluids that are active in metamorphism?

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

The intensity of regional metamorphism may be recognized by:

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

Describe nonfoliated metamorphic rocks.What is their appearance? Describe the two types of nonfoliated metamorphic rocks.