Geology 001 - Physical Geology » Summer 2021 » Chapter 4 Quiz
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Question #1
A basaltic intrusion that cuts across layers of sedimentary rocks is called a _______.
A.
dike
B.
batholith
C.
pluton
D.
sill
E.
laccolith
Question #2
Examine Bowen’s Reaction Series diagram. Which mineral has the highest temperature of crystallization?
A.
pyroxene
B.
biotite
C.
olivine
D.
amphibole
E.
potassium feldspar (k-spar)
Question #3
What is the process by which decompression melting produces magma at divergent plate boundaries?
A.
addition of heat at constant depth
B.
additional pressure deep within the Earth
C.
chemical changes to things like pH and charge
D.
reduction of pressure at constant temperature
E.
addition of fluid at constant pressure
Question #4
As magma travels up from the asthenosphere through the lithosphere into continental crust, how will fractional crystallization/magmatic differentiation change the chemistry of an ultramafic magma?
A.
It will become more mafic.
B.
It will contain more volatiles.
C.
It will have higher pressure.
D.
It will become more felsic.
E.
It will have higher temperature.
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