Question 1

Forearc basins will consist of thick sequences of highly deformed sedimentary rocks.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is an example of a volcanic island arc?

Accepted Answer

A) Cascade Volcanoes 
B) Andean Volcanoes 
C) Hawaiian Volcanoes 
D) Aleutian Volcanoes 
A) Cascade Volcanoes 
B) Andean Volcanoes 
C) Hawaiian Volcanoes 
D) Aleutian Volcanoes

Question 3

In what ways are the Sierra Nevada Mountains and the Andes Mountains the same in terms of mountain formation?

Accepted Answer

A) Crumpling of the continent through collision with another continent 
B) Emplacement of batholiths 
C) Extension of the continent through rifting 
D) Downwarping of the continent due to crustal subsidence 
A) Crumpling of the continent through collision with another continent 
B) Emplacement of batholiths 
C) Extension of the continent through rifting 
D) Downwarping of the continent due to crustal subsidence

Question 4

Which of the following is a real-world example of isostatic adjustment?

Accepted Answer

A) Continental margin of North America extending to create a forearc basin in California 
B) African continent bulging upward when moving over a mantle plume 
C) Downwarping of the continent in Illinois due to subduction of slabs of oceanic lithosphere 
D) Rebound of the landmass around Hudson Bay after glacial ice sheets have retreated 
A) Continental margin of North America extending to create a forearc basin in California 
B) African continent bulging upward when moving over a mantle plume 
C) Downwarping of the continent in Illinois due to subduction of slabs of oceanic lithosphere 
D) Rebound of the landmass around Hudson Bay after glacial ice sheets have retreated

Question 5

The depth of deep-ocean trenches is closely related to age: the younger the subducting plate, the deeper the trench.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following describes the events of the Taconic Orogeny?

Accepted Answer

A) Closing of the marginal sea caused a volcanic arc to be thrust over the continent 
B) North America collided with a microcontinent as the marginal sea continued to close 
C) The sea along North America closed completely as Africa collided with North America 
D) The rifting of Pangaea opened the modern Atlantic Ocean 
A) Closing of the marginal sea caused a volcanic arc to be thrust over the continent 
B) North America collided with a microcontinent as the marginal sea continued to close 
C) The sea along North America closed completely as Africa collided with North America 
D) The rifting of Pangaea opened the modern Atlantic Ocean

Question 7

What is the difference between a graben and a half-graben?

Accepted Answer

Half-grabens are bou

Question 8

Which part of the subduction zone is indicated in this image?

Accepted Answer

A) Deep-ocean trench 
B) Forearc basin 
C) Volcanic arc 
D) Back-arc basin 
A) Deep-ocean trench 
B) Forearc basin 
C) Volcanic arc 
D) Back-arc basin

Question 9

How can plate tectonics help explain the existence of fossil marine organisms in rocks found on top of compressional mountains?

Accepted Answer

When two landmasses collide, rocks that

Question 10

Is there data to suggest there was more accretion in the distant past (4 billion years ago)or the more recent past (50 million years ago)? Explain.

Accepted Answer

There was more accretion in the past bec

Question 11

What geologic body is marked in this image by the circle?

Accepted Answer

A) Batholith 
B) Accreted terrane 
C) Oceanic lithosphere 
D) Flood basalts 
A) Batholith 
B) Accreted terrane 
C) Oceanic lithosphere 
D) Flood basalts

Question 12

What kind of stress is responsible for creating fault-block mountains?

Accepted Answer

A) Compression 
B) Tension 
C) Shear 
A) Compression 
B) Tension 
C) Shear

Question 13

Accretionary wedges will form along a(n)________ tectonic boundary.

Accepted Answer

A) Convergent 
B) Divergent 
C) Transform 
A) Convergent 
B) Divergent 
C) Transform

Question 14

Fault-block mountains form only along divergent plate boundaries.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following statements best characterizes the geology and structure of the Appalachian Mountains?

Accepted Answer

A) Deeply eroded, late Mesozoic upwarping mountains 
B) Sedimentary strata folded at in the late Paleozoic Era 
C) Continental volcanic chain along a subduction zone 
D) Fault-block mountains developed from rifting of North America from Africa 
A) Deeply eroded, late Mesozoic upwarping mountains 
B) Sedimentary strata folded at in the late Paleozoic Era 
C) Continental volcanic chain along a subduction zone 
D) Fault-block mountains developed from rifting of North America from Africa

Question 16

Which material will "float" higher on the mantle: 5 km thick oceanic crust or 40 km thick continental crust? Why?

Accepted Answer

Continenta

Question 17

What is the source of the sediments in a forearc basin?

Accepted Answer

A) Carbonate reefs 
B) Continental sediments and pyroclastic materials 
C) Sediments washed from the landmass 
D) Glacial sediments 
A) Carbonate reefs 
B) Continental sediments and pyroclastic materials 
C) Sediments washed from the landmass 
D) Glacial sediments

Question 18

Most mountain ranges formed through cooling of the Earth's crust, which resulted in wrinkling as it contracted.

Accepted Answer

A) True 
 B)False

Question 19

How would the angle of subduction of a tectonic plate influence the location of a volcanic arc?

Accepted Answer

A) The steeper the angle, the closer the arc would form to the trench 
B) The shallower the angle, the closer the arc would form to the trench 
C) The steeper the angle, the further the arc would form to the trench 
D) The angle of subduction doesn't affect the location of the volcanic arc 
A) The steeper the angle, the closer the arc would form to the trench 
B) The shallower the angle, the closer the arc would form to the trench 
C) The steeper the angle, the further the arc would form to the trench 
D) The angle of subduction doesn't affect the location of the volcanic arc

Exam 14: Convergent Boundaries

Forearc basins will consist of thick sequences of highly deformed sedimentary rocks.

Which of the following is an example of a volcanic island arc?

In what ways are the Sierra Nevada Mountains and the Andes Mountains the same in terms of mountain formation?

Which of the following is a real-world example of isostatic adjustment?

The depth of deep-ocean trenches is closely related to age: the younger the subducting plate, the deeper the trench.

Which of the following describes the events of the Taconic Orogeny?

What is the difference between a graben and a half-graben?

Which part of the subduction zone is indicated in this image?

How can plate tectonics help explain the existence of fossil marine organisms in rocks found on top of compressional mountains?

Is there data to suggest there was more accretion in the distant past (4 billion years ago)or the more recent past (50 million years ago)? Explain.

What geologic body is marked in this image by the circle?

What kind of stress is responsible for creating fault-block mountains?

Accretionary wedges will form along a(n)________ tectonic boundary.

Fault-block mountains form only along divergent plate boundaries.

Which of the following statements best characterizes the geology and structure of the Appalachian Mountains?

Which material will "float" higher on the mantle: 5 km thick oceanic crust or 40 km thick continental crust? Why?

What is the source of the sediments in a forearc basin?

Most mountain ranges formed through cooling of the Earth's crust, which resulted in wrinkling as it contracted.

How would the angle of subduction of a tectonic plate influence the location of a volcanic arc?

An Introduction to Geology

Plate Tectonics: a Scientific Revolution Unfolds

Matter and Minerals

Magma, Igneous Rocks, and Intrusive Activity

Volcanoes and Volcanic Hazards

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes

Earths Interior

Divergent Boundaries

Mass Wasting

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Global Climate Change

Earths Evolution Through Geologic Time

Energy and Mineral Resources

Touring Our Solar System

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