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