Question 1

The sides of a fold where curvature is at a minimum are termed ____________.

Accepted Answer

A)   branches
B)   limbs
C)   axial planes
D)   hinges

Question 2

The central portion of high curvature on a fold is termed the fold ____________.

Accepted Answer

A)   limb
B)   hinge
C)   midsection
D)   thorax

Question 3

Normal,reverse,and thrust are all examples of ____________ faults.

Accepted Answer

A)   strike-slip
B)   dip-slip
C)   oblique-slip

Question 4

A fold shaped like an elongate trough is a(n) ____________.

Accepted Answer

A)   anticline
B)   basin
C)   dome
D)   syncline

Question 5

A fold shaped like a right-side up bowl is a(n) ____________.

Accepted Answer

A)   anticline
B)   basin
C)   dome
D)   syncline

Question 6

Regions where Precambrian metamorphic rocks are exposed at the surface are termed ____________.

Accepted Answer

A)   shields
B)   cratonic platforms
C)   convergent margins

Question 7

A fold shaped like an elongate arch is a(n) ____________.

Accepted Answer

A)   anticline
B)   basin
C)   dome
D)   syncline

Question 8

A body of rock to which a sudden,rapid stress has been applied is more likely to exhibit ____________ than is a body of rock subjected to a gradually applied stress.

Accepted Answer

A)   brittle behavior
B)   ductile behavior

Question 9

Continental crust is typically 35 km thick,but may be up to ____________ thicker under mountain ranges.

Accepted Answer

A)   20%
B)   50%
C)   100%
D)   200%

Question 10

A polished surface produced by rock scraping along a fault is termed a(n) ____________.

Accepted Answer

A)   orogeny
B)   phylogeny
C)   aureole
D)   slickenside

Question 11

In a ____________ fault,the fault plane is less than 30° from horizontal and the hanging-wall block moves upward relative to the footwall block.

Accepted Answer

A)   detachment
B)   normal
C)   reverse
D)   thrust D

Question 12

In the above map the vertical,north-south trending fault is a ____________ fault.

Accepted Answer

A)   normal dip-slip
B)   reverse dip-slip
C)   right-lateral strike-slip
D)   left-lateral strike-slip D

Question 13

Motion along all faults is either strike-slip or dip-slip; combinations of these two types of displacement are never found together in a single fault.

Accepted Answer

A) True 
 B)False

Question 14

Right-lateral and left-lateral are both examples of ____________ faults.

Accepted Answer

A)   strike-slip
B)   dip-slip
C)   oblique-slip

Question 15

The distinction between joints and faults is that ____________.

Accepted Answer

A)   faults are joints that are greater than one square meter in areal extent
B)   faults are fractures along which displacement has occurred; displacement does not occur along joints
C)   joints are fractures along which displacement has occurred; displacement does not occur along faults
D)   there is no distinction; the two terms are synonymous

Question 16

Movement along faults often produces sharply angled rock fragments termed ____________.

Accepted Answer

A)   fault gouge
B)   rock flour
C)   fault breccia
D)   slickensides C

Question 17

An episode of mountain building is termed a(n) ____________.

Accepted Answer

A)   orogeny
B)   phylogeny
C)   aureole
D)   slickenside

Question 18

Earthquakes only occur ____________ the brittle/ductile transition depth.

Accepted Answer

A)   above
B)   below
C)   at or near

Question 19

A joint always occurs as a single,isolated plane within a rock.

Accepted Answer

A) True 
 B)False

Question 20

Change in shape,induced by stress,is termed ____________.

Accepted Answer

A)   plastic deformation
B)   pressure release
C)   strain
D)   metamorphosis

Exam 9: Crags, cracks, and Crumples: Crustal Deformation and Mountain Building

The sides of a fold where curvature is at a minimum are termed ____________.

Correct AnswerverifiedShow Answer

The central portion of high curvature on a fold is termed the fold ____________.

Correct AnswerverifiedShow Answer

Normal,reverse,and thrust are all examples of ____________ faults.

Correct AnswerverifiedShow Answer

A fold shaped like an elongate trough is a(n) ____________.

Correct AnswerverifiedShow Answer

A fold shaped like a right-side up bowl is a(n) ____________.

Correct AnswerverifiedShow Answer

Regions where Precambrian metamorphic rocks are exposed at the surface are termed ____________.

Correct AnswerverifiedShow Answer

A fold shaped like an elongate arch is a(n) ____________.

Correct AnswerverifiedShow Answer

A body of rock to which a sudden,rapid stress has been applied is more likely to exhibit ____________ than is a body of rock subjected to a gradually applied stress.

Correct AnswerverifiedShow Answer

Continental crust is typically 35 km thick,but may be up to ____________ thicker under mountain ranges.

Correct AnswerverifiedShow Answer

A polished surface produced by rock scraping along a fault is termed a(n) ____________.

Correct AnswerverifiedShow Answer

In a ____________ fault,the fault plane is less than 30° from horizontal and the hanging-wall block moves upward relative to the footwall block.

Correct AnswerverifiedD

In the above map the vertical,north-south trending fault is a ____________ fault.

Correct AnswerverifiedD

Motion along all faults is either strike-slip or dip-slip; combinations of these two types of displacement are never found together in a single fault.

Correct AnswerverifiedShow Answer

Right-lateral and left-lateral are both examples of ____________ faults.

Correct AnswerverifiedShow Answer

The distinction between joints and faults is that ____________.

Correct AnswerverifiedShow Answer

Movement along faults often produces sharply angled rock fragments termed ____________.

Correct AnswerverifiedC

An episode of mountain building is termed a(n) ____________.

Correct AnswerverifiedShow Answer

Earthquakes only occur ____________ the brittle/ductile transition depth.

Correct AnswerverifiedShow Answer

A joint always occurs as a single,isolated plane within a rock.

Correct AnswerverifiedShow Answer

Change in shape,induced by stress,is termed ____________.

Correct AnswerverifiedShow Answer

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D

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D

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C

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