Section #: 18.2
Intrusive Activity
Practice Test
1.
What type of igneous pluton is tabular and parallel to surrounding rock layers?
a.
a dike
b.
a sill
c.
a batholith
d.
a stock
Hint
2.
A tabular pluton that cuts across preexisting rock is called a __________.
a.
dike
b.
sill
c.
laccolith
d.
stock
Hint
3.
Which letter in the figure demonstrates magma melting rocks after they are broken off and sink?
a.
A
b.
B
c.
C
d.
none of the above
Hint
4.
What type of texture do most plutons have?
a.
coarse grained
b.
fine grained
c.
pegmatitic
d.
intermediate grained
Hint
5.
A __________ is a large intrusive igneous rock body that covers at least 100 square km.
a.
batholith
b.
laccolith
c.
sill
d.
dike
Hint
6.
What is the name for an igneous intrusion that is smaller than a batholith but similar in shape?
a.
laccolith
b.
dike
c.
sill
d.
stock
Hint
7.
What letter in the figure depicts the possible beginning of a pluton like a stock?
a.
A
b.
B
c.
C
d.
none of the above
Hint
8.
A __________ is a mushroom-shaped pluton with a round top and flat bottom.
a.
sill
b.
laccolith
c.
batholith
d.
stock
Hint
9.
What letter in the figure depicts the possible beginning of plutons like dikes and sills?
a.
A
b.
B
c.
C
d.
none of the above
Hint
