Exam 7: Metamorphism and Metamorphic Rocks

Partial melting is an important process in the formation of migmatites.

The distinctive layers or bands of different minerals in gneisses may be complexly folded.

What foliated, regional metamorphic rock is texturally intermediate between slate and schist?

________ forms from the metamorphism of limestone or dolostone.

Which is a foliated, fine-grained regional metamorphic rock formed from mudstone and shale?

________ is typically formed by metamorphism of a mature sandstone.

Calcite is the main mineral constituent of the sedimentary rock limestone and of the metamorphic rock marble.

Match the rock with the appropriate description. -________ foliated, fine-grained metamorphic rock formed from mudstone and shale

What are the controlling factors that determine the type of metamorphism and the texture of the rocks that are formed?

The oldest dated rocks in the world occur in Canada.

In 1915, which geologist proposed a series of metamorphic facies to describe the progressive mineralogic and textural changes in basalt as a function of temperature and pressure?

What textures and two index minerals would you expect for intermediate grade metamorphic rocks derived from mudstones and shales.

What is the facies name for the unique high pressure-low temperature hydrous metamorphism seen on top of subducting oceanic crust?

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.

Quartzites and metaconglomerates are usually formed along faults by intensive fracturing and fragmentation of conglomerate beds and quartz veins.

How would you correctly refer to the metamorphic grade of a rock that contains abundant chlorite as its highest temperature mineral such as a greenschist or phyllite?

What is the major source of heat for contact metamorphism?

Impact metamorphism is caused by the roots of mountain belts penetrating the mantle below.

Which of the following lists the rocks in the order of increasing grain size and increasing grade for regionally metamorphosed mud rocks?

________ is thought to form by partial melting and in situ crystallization of the melted portion at the highest grade of regional metamorphism of crustal rocks.