geol/ch.3 mult choice

A surface separating different types of rocks is called:
A) a chill zone.
B) a xenolith.
C) a contact.
D) none of the above

The major difference between volcanic and plutonic igneous rocks is:
A) the type of minerals they contain.
B) where they solidify.
C) their chemical composition.
D) all of the above

Which is not a fine-grained rock type?
A) granite
B) basalt
C) andesite
D) rhyolite

By definition, stocks differ from batholiths in:
A) elevation above sea level.
B) chemical composition.
C) shape.
D) size.

Fragments of country rock that are distinct from the body of igneous rocks in which they are enclosed:
A) lithographs
B) xenoliths
C) exoliths
D) meteorites

Which of the following minerals is part of Bowen's Continuous Series?
A) amphibole.
B) plagioclase feldspar.
C) biotite.
D) olivine.

Which of the following minerals is part of Bowen's Discontinuous Series?
A) olivine
B) pyroxene
C) All of these are part of Bowen's  Discontinuous Series
D) biotite

The difference in minerals among plutonic rocks is caused by:
A) different crystallization temperatures.
B) magmatic differentiation.
C) different chemical compositions.
D) all of these.

An example of a hot spot where a hot mantle plume is currently lying at a shallow depth beneath the continental crust is:
A) Columbia River Plateau.
B) Mt. Rainier.
C) Yellowstone National Park.
D) Hawaii.

Basalt is most often associated with what type of plate boundary? 
A) reversible plate boundaries B) convergent plate boundaries
C) transform plate boundaries
D) divergent plate boundaries

You discover a rock with minerals large enough to be seen containing potassium feldspar, muscovite, and quartz.This is:
A) diorite.
B) gabbro.
C) hornblende.
D) granite.

Bowen's Reaction Series illustrates relations between: 
A) temperature, chemical composition, and mineral structure.
B) temperature, pressure, and viscosity.
C) viscosity, temperature, silica content, and volatile content.
D) temperature, viscosity, and mineral composition.

The two important criteria used for igneous rock classification are:
A) texture and temperature.
B) mineral composition and temperature.
C) texture and mineral composition.
D) temperature and viscosity.

Andesite and diorite: 
A) all of these
B) formed from magma with the same silica content.
C) contain the same minerals.
D) formed from magma with the same temperature.

A rock with mineral crystals too small to be seen and low temperature minerals is:
A) granite.
B) andesite.
C) gabbro.
D) rhyolite.

Igneous rocks that form entirely beneath Earth's surface are said to be: 
A) plutonic
B) extrusive.
C) volcanic
D) platonic.

Andesite was named for a rock type commonly found:
A) in the Andes Mountains.
B) in the Rocky Mountains
C) in Hawaii.
D) in Mayberry, North Carolina.

Igneous processes are those which relate to: 
A) solidification of magma.
B) melting of rocks.
C) formation of magma.
D) all of these

The geothermal gradient of the asthenosphere is: 
A) the reverse of the geothermal gradient in the lithosphere.
B) the same as the temperature structure of the lithosphere.
C) less than that of the lithosphere.
D) always changing as a result of plate tectonics.

Volcanic rocks are ALL: 
A) Extrusive.
B) Explosive.
C) Plutonic.
D) Intrusive.