Exam 8: Metamorphism and Metamorphic Rocks

Granulites are low temperature but high pressure metamorphic facies.

Contact metamorphism is found at the boundary between country rock and _______.

How does lithostatic pressure differ from differential pressure?

Why is time important in metamorphism?

Metamorphism is most common along ____________________ plate boundaries.

Only magmatic fluids,not pore fluids of the country rock,have an effect on contact metamorphism.

Many ore deposits,including tin and tungsten,are associated with ____________________ metamorphism.

List some of the minerals commonly used as index minerals for metamorphic zones.

Kyanite,andalusite,and sillimanite ____.

What are some important types of ore deposits that may have resulted from movement of metallic ions in hydrothermal solutions?

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

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

Some of the oldest known rocks,which have been dated at 3.96 billion years,are metamorphic.What does this tell us about the age of Earth?

Isograds separate different metamorphic zones.

What does increasing grade of metamorphism mean in terms of the conditions which produced a sequence of metamorphic rocks?

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

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

Metamorphism takes place ____.

At which type(s)of tectonic plate boundaries does heat sufficient to cause metamorphism occur?

What may the intensity of regional metamorphism be recognized by?