To help you master concepts from Chapter 15 (Geologic Structures), take this sample examination. Learn to think in three dimensions to do well on this exam!
1
Which of the following is a type of stress?
A)
shear.
B)
compression.
C)
tension.
D)
all of these are types of stress.
2
The compass direction of a line formed by the intersection of an inclined plane and a horizontal plane is called:
A)
the cross-cutting angle.
B)
the intersection angle
C)
strike
D)
dip.
3
Folding occurs when rocks behave as:
A)
brittle solids.
B)
fluids.
C)
ductile solids.
D)
none of these.
4
Anticlines:
A)
form in rocks that are resistant to folding.
B)
form in rocks as a result of brittle deformation.
C)
are upwarped folds.
D)
are downwarped folds.
5
Synclines:
A)
are never observed in nature.
B)
are downwarped folds.
C)
are upwarped folds.
D)
form in rocks that are resistant to folding.
6
In a syncline, the oldest rocks will be found:
A)
on the limbs of the fold.
B)
near the axis of the fold.
C)
at the bottom of the fold
D)
none of these.
7
In a syncline, all rock layers:
A)
dip toward the fold axis.
B)
dip away from the fold axis.
C)
have vertical dips.
D)
have horizontal dips.
8
In a syncline, the youngest rock layers:
A)
are found on the limbs of the fold.
B)
are found nearest the fold axis.
C)
dip away from the fold axis.
9
In an plunging anticline, the fold axis plunges:
A)
very steeply.
B)
toward the flanks of the fold.
C)
toward the youngest rocks.
D)
none of these.
10
A structural basin is a special case of:
A)
a dome.
B)
a syncline.
C)
an anticline
D)
a freak of nature.
11
A fault is observed where the hanging wall is displaced upward relative to the footwall.
A)
This is a normal fault.
B)
This is a reverse fault.
C)
This is a left-lateral strike-slip fault.
D)
This is a right-lateral strike-slip fault.
12
The San Andreas Fault is an example of:
A)
a normal fault.
B)
a reverse fault.
C)
a thrust fault.
D)
none of these.
13
Faults where displacement is both vertical and horizontal are called:
A)
radical faults.
B)
complex faults.
C)
slippery faults.
D)
oblique faults.
14
A fault that displays mostly vertical displacement is:
A)
a dip-slip fault.
B)
a strike-slip fault.
C)
a transform fault.
D)
none of these.
15
Strike-slip faults can also be:
A)
dip-slip faults.
B)
transform faults.
C)
anticlines.
D)
syncline.
16
Faults result from:
A)
ductile deformation of rocks.
B)
folding of rocks.
C)
brittle deformation of rocks.
D)
all of these.
17
Fractures result from:
A)
brittle deformation of rocks.
B)
ductile deformation of rocks.
C)
slow strain rates.
D)
all of these.
18
Folds whose limbs are horizontal are known as:
A)
horizontal layers.
B)
overturned folds.
C)
massively thrusted folds.
D)
recumbent folds.
19
Which of the following is not a fold type?
A)
syncline.
B)
anticline.
C)
dome.
D)
thrust fold.
20
Which geologic setting has the most obvious dip-slip faults?
A)
The midwest United States.
B)
The Basin and Range Province of North America.
C)
California.
D)
The Canadian Shield.
Tumwine Edward
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