Question 1

Volcanic rocks, mostly _______, accumulate near a convergent plate boundary.

Accepted Answer

A)   shales
B)   sandstones
C)   granites
D)   andesites
E)   marblesF) D) and E)
G) B) and E) D

Question 2

During the last couple of decades, geologist have used a _____ approach to gain insight into the growth and wearing away of mountains.

Accepted Answer

A)   tectonic
B)   erosional
C)   weathering
D)   system
E)   climaticF) None of the above
G) All of the above

Question 3

The continental crust is _______ beneath mountain belts than under the craton.

Accepted Answer

A)   thinner
B)   thicker
C)   the same thickness
D)   more felsic
E)   more denseF) A) and C)
G) A) and B)

Question 4

The Himalayan Mountains formed as the result of ______ convergence.

Accepted Answer

A)   ocean-continent
B)   arc-continent
C)   ocean-ocean
D)   arc-ocean
E)   continent-continentF) A) and D)
G) B) and D)

Question 5

A cycle of splitting of a supercontinent, opening of an ocean basin, followed by closing of the basin and collision of continents is known as a Wilson Cycle.

Accepted Answer

A) True 
 B)False

Question 6

A Precambrian shield, an area of no sedimentary rocks, covers much of eastern and northern Canada.

Accepted Answer

A) True 
 B)False

Question 7

A(n)  __________ is an episode of intense deformation of the rocks of a region.

Accepted Answer

A)   isostatic adjustment
B)   geosyncline
C)   orogeny
D)   buoyancy event
E)   basin to dome eventF) A) and E)
G) A) and D)

Question 8

A ______ is the source of sedimentary and volcanic material accumulating along a convergent boundary.

Accepted Answer

A)   subduction zone
B)   magmatic arc
C)   suspect terrane
D)   mid-oceanic ridge
E)   folded mountain rangeF) A) and C)
G) A) and B)

Question 9

The region of a continent that has been structurally stable for a long period of time is called the ______.

Accepted Answer

A)   dome
B)   basin
C)   Precambrian shield
D)   craton
E)   mountain rangeF) A) and B)
G) None of the above

Question 10

________ beneath the Basin and Range helps to explain the extensive rhyolitic and basaltic eruptions that occurred tens of millions of years after the last orogeny.

Accepted Answer

A)   Obduction
B)   Delamination
C)   Wilson Cycles
D)   Subduction
E)   Thickening of the continental crust by "rooting"F) None of the above
G) C) and E)

Question 11

Geologists regard most bodies of ultramafic rock as being _______.

Accepted Answer

A)   intrusions formed during the accumulation stage
B)   due to gravitational collapse and spreading
C)   due to lithospheric delamination
D)   areas left by block faulting and uplift
E)   mantle material faulted into the crust during orogenyF) A) and D)
G) A) and E)

Question 12

Some accreted terranes were microcontinents similar to present day New Zealand.

Accepted Answer

A) True 
 B)False

Question 13

The present ________ represent rejuvenation following uplift in Late Tertiary time.

Accepted Answer

A)   Appalachian Mountains
B)   Alps
C)   Himalayan Mountains
D)   Ural Mountains
E)   Sierra Nevada MountainsF) A) and D)
G) A) and E) A

Question 14

Weathering and erosion play no role in the development of mountains.

Accepted Answer

A) True 
 B)False  False

Question 15

A _____ terrane has rock types and ages that do not seem to be related to the rest of the geology of a mountain belt.

Accepted Answer

A)   mixed
B)   coupled
C)   partial
D)   integrated
E)   suspectF) All of the above
G) A) and C)

Question 16

At the close of the Paleozoic, eastern North America was attached to what is now _______.

Accepted Answer

A)   Europe and Asia
B)   China and South America
C)   India and Antarctica
D)   Africa and China
E)   Europe and AfricaF) None of the above
G) A) and E)

Question 17

Most of the world's mountains existing today are a result of ____.

Accepted Answer

A)   intense deformation
B)   isostasy
C)   weathering and erosion
D)   intense deformation and isostasy
E)   intense deformation, isostasy, and weathering and erosionF) None of the above
G) C) and E)

Question 18

The cycle of splitting of a supercontinent, opening of an ocean basin, followed by closing of the basin and collision of the continents, is known as a ________.

Accepted Answer

A)   Wegener plan
B)   Wilson Cycle
C)   delamination plan
D)   Hess Process
E)   Vine-Mathews systemF) None of the above
G) A) and B)

Question 19

Late stage normal faulting in a mountain range is a result of _______.

Accepted Answer

A)   volcanism
B)   igneous intrusions
C)   vertical uplift or extension
D)   sea-floor spreading
E)   geosyncline formationF) All of the above
G) None of the above

Question 20

The _____ is(are)  the product of oceanic-continental convergence and Earth's second highest mountain belt.

Accepted Answer

A)   Appalachians
B)   Himalayas
C)   Andes
D)   Basin and Range
E)   Sierra NevadaF) A) and C)
G) A) and D)

Exam 20: Mountain Belts and the Continental Crust

Volcanic rocks, mostly _______, accumulate near a convergent plate boundary.

Correct AnswerverifiedD

During the last couple of decades, geologist have used a _____ approach to gain insight into the growth and wearing away of mountains.

Correct AnswerverifiedShow Answer

The continental crust is _______ beneath mountain belts than under the craton.

Correct AnswerverifiedShow Answer

The Himalayan Mountains formed as the result of ______ convergence.

Correct AnswerverifiedShow Answer

A cycle of splitting of a supercontinent, opening of an ocean basin, followed by closing of the basin and collision of continents is known as a Wilson Cycle.

Correct AnswerverifiedShow Answer

A Precambrian shield, an area of no sedimentary rocks, covers much of eastern and northern Canada.

Correct AnswerverifiedShow Answer

A(n) __________ is an episode of intense deformation of the rocks of a region.

Correct AnswerverifiedShow Answer

A ______ is the source of sedimentary and volcanic material accumulating along a convergent boundary.

Correct AnswerverifiedShow Answer

The region of a continent that has been structurally stable for a long period of time is called the ______.

Correct AnswerverifiedShow Answer

________ beneath the Basin and Range helps to explain the extensive rhyolitic and basaltic eruptions that occurred tens of millions of years after the last orogeny.

Correct AnswerverifiedShow Answer

Geologists regard most bodies of ultramafic rock as being _______.

Correct AnswerverifiedShow Answer

Some accreted terranes were microcontinents similar to present day New Zealand.

Correct AnswerverifiedShow Answer

The present ________ represent rejuvenation following uplift in Late Tertiary time.

Correct AnswerverifiedA

Weathering and erosion play no role in the development of mountains.

Correct AnswerverifiedFalse

A _____ terrane has rock types and ages that do not seem to be related to the rest of the geology of a mountain belt.

Correct AnswerverifiedShow Answer

At the close of the Paleozoic, eastern North America was attached to what is now _______.

Correct AnswerverifiedShow Answer

Most of the world's mountains existing today are a result of ____.

Correct AnswerverifiedShow Answer

The cycle of splitting of a supercontinent, opening of an ocean basin, followed by closing of the basin and collision of the continents, is known as a ________.

Correct AnswerverifiedShow Answer

Late stage normal faulting in a mountain range is a result of _______.

Correct AnswerverifiedShow Answer

The _____ is(are) the product of oceanic-continental convergence and Earth's second highest mountain belt.

Correct AnswerverifiedShow Answer

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