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.
batholith
B.
laccolith
C.
pluton
D.
sill
E.
dike
Question #2
Examine Bowen’s Reaction Series diagram. Which mineral has the highest temperature of crystallization?
A.
potassium feldspar (k-spar)
B.
amphibole
C.
olivine
D.
pyroxene
E.
biotite
Question #3
What is the process by which decompression melting produces magma at divergent plate boundaries?
A.
addition of heat at constant depth
B.
addition of fluid at constant pressure
C.
reduction of pressure at constant temperature
D.
additional pressure deep within the Earth
E.
chemical changes to things like pH and charge
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 have higher pressure.
B.
It will contain more volatiles.
C.
It will become more mafic.
D.
It will become more felsic.
E.
It will have higher temperature.
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