Exam 6: Up From the Inferno: Magma and Igneous Rocks

Igneous rocks are formed

During fractional crystallization of a magma body,the first rock that is expected to crystallize from the magma will be

A pegmatite is a course-grained igneous rock that forms primarily because the melt

Because of its physical properties,magma tends to

As compared to aphanitic igneous rocks,phaneritic rocks are

Injecting hot fudge into ice cream and causing the ice cream to melt is an appropriate analogy for which cause of magma melt?

In the figure provided below,what type of igneous intrusion is the horizontal rock unit shown by letter A?

The boundary formed between new intrusive igneous rock and the host rock around it is called a

Which of the following does not affect the cooling rate of magma?

A volcanic arc results from __________ tectonic movements and is associated with a __________.

The geotherm is the rate of change of

Shiprock,New Mexico,seen in the photo below is a(n)

In general,if a body of igneous (source)rock is subjected to partial melting,the magma that is produced is expected to be

Flood basalts such as those found in the Columbia Plateau and the Deccan region are associated with

In the figure provided below,what type of igneous intrusion is the vertical rock unit shown by letter A?

The continuous series in Bowen's reaction series describes the crystallization behavior of which mineral?

Fragments of material erupted from a volcano eventually settle and lithify to form an extrusive igneous rock called

A magma body with a ________ volume and a ________ shape cools fastest.

Describe the process of decompression melting.Be sure to include an example of where this type of melting occurs within the Earth.

Describe the difference between the relative viscosity of felsic versus mafic magma and how this affects the rate of flow of each type.