Question 1

In which of the following three basin types might you be able to find oil forming and why? Rift basin,passive-margin basin,and foreland basin.

Accepted Answer

Passive-margin basins are form...

Question 2

Grains of sediments and fossils in the deep ocean tend to be ___________-sized because of the low amount of energy in the environment.

Accepted Answer

A)   cobble
B)   gravel
C)   sand
D)   clayE) All of the above
F) A) and D)

Question 3

Consult the figure below.Here,distinct internal laminations are inclined at an angle to the boundary of the main sedimentary layers.These are termed

Accepted Answer

A)   graded beds.
B)   cross beds.
C)   horizontal beds.
D)   tilted beds.E) A) and B)
F) A) and C)

Question 4

The image below of Death Valley,CA,shows a road that curves around a(n)

Accepted Answer

A)   delta.
B)   alluvial fan.
C)   turbidite.
D)   glacial till.E) None of the above
F) C) and D)

Question 5

Compaction and cementation of grains occurs during

Accepted Answer

A)   erosion.
B)   lithification.
C)   transport.
D)   weathering.E) All of the above
F) A) and D)

Question 6

What type of sediment is typically found in lake bottoms?

Accepted Answer

A)   gravel
B)   sand
C)   silt
D)   clay/mudE) B) and D)
F) C) and D)

Question 7

Grains become rounded primarily during

Accepted Answer

A)   weathering at the outcrop.
B)   lithification.
C)   transportation.
D)   deposition.E) A) and D)
F) None of the above

Question 8

Biochemical limestones are dominated by carbonate mud and fragments of

Accepted Answer

A)   siliceous shells of planktonic diatoms and foraminifera.
B)   skeletons of marine invertebrates made of calcite and aragonite.
C)   the phosphatic bones of fish.
D)   the organic breakdown products of wood and leaves from trees.E) C) and D)
F) All of the above

Question 9

If a geologist found preserved mud cracks,they could conclude that the environment in which they formed

Accepted Answer

A)   was once covered in wet mud.
B)   was once covered by a glacier.
C)   has been subjected to a major climate change event.
D)   was the site of a mass extinction event.E) B) and C)
F) A) and B)

Question 10

Which of the following is true about regressions?

Accepted Answer

A)   They are typically well-preserved in the sedimentary record.
B)   They occur when the climate warms and continental ice sheets melt.
C)   They occur when the land is uplifted by tectonic processes.
D)   Coastal environments will migrate landward.E) B) and D)
F) A) and B)

Question 11

Sediments deposited in a beach environment are typically

Accepted Answer

A)   poorly sorted.
B)   very fine grained.
C)   composed of rounded grains.
D)   composed of mostly travertine.E) A) and C)
F) B) and C)

Question 12

Stratification refers to

Accepted Answer

A)   the development of layering within sedimentary rocks.
B)   the act of deposition of sediment that will ultimately form sedimentary rock.
C)   physical and chemical alterations,including compaction and cementation,that occur as sediment is transformed into rock.
D)   the process of breaking down a source rock into smaller pieces called grains.E) A) and B)
F) C) and D)

Question 13

The image below shows ancient dunes exposed in Zion National Park in Utah.Using the interpreted portion of the image at the left,what was the dominant wind direction that formed these sedimentary structures?

Accepted Answer

A)   toward the right
B)   toward the left
C)   toward both the left and right
D)   vertical,both up and downE) A) and B)
F) All of the above

Question 14

Death Valley is currently sinking partly due to the weight of continuously accumulating sediment shed from the mountains that border the valley.What phenomenon is this an example of and what depositional environment is created by the sediment deposition?

Accepted Answer

A)   regression and deltas
B)   subsidence and deltas
C)   regression and alluvial fans
D)   subsidence and alluvial fansE) A) and B)
F) A) and C)

Question 15

How are a marine transgression and regression different? What happens to the shoreline in each?

Accepted Answer

Transgressions involve relativ...

Question 16

Describe a rock formation that is bedded.How might this formation have formed?

Accepted Answer

Student answers might be similar to the ...

Question 17

What are the steps involved in the formation of a clastic sedimentary rock?

Accepted Answer

Clastic sedimentary rocks are formed by ...

Question 18

Which of the three types of rock would you expect to be most abundant at the Earth's surface? Why? How does this relate to how these rocks form?

Accepted Answer

Sedimentary rocks are expected to be the...

Question 19

As compared with metamorphism,diagenesis

Accepted Answer

A)   means exactly the same thing.
B)   takes place at lower temperatures and pressures.
C)   takes place at higher temperatures and pressures.
D)   takes place at greater depths that are well within the mantle.E) A) and B)
F) B) and C)

Question 20

What is an alluvial fan? How is it different from a marine delta?

Accepted Answer

An alluvial fan is a wedge-shaped accumu...

Exam 6: Pages of the Earths Past: Sedimentary Rocks

Sediments deposited in a beach environment are typically

Correct AnswerverifiedShow Answer

In which of the following three basin types might you be able to find oil forming and why? Rift basin,passive-margin basin,and foreland basin.

Correct AnswerverifiedPassive-margin basins are form...View AnswerShow Answer

What is an alluvial fan? How is it different from a marine delta?

Correct AnswerverifiedAn alluvial fan is a wedge-shaped accumu...View AnswerShow Answer

The image below of Death Valley,CA,shows a road that curves around a(n)

Correct AnswerverifiedShow Answer

Death Valley is currently sinking partly due to the weight of continuously accumulating sediment shed from the mountains that border the valley.What phenomenon is this an example of and what depositional environment is created by the sediment deposition?

Correct AnswerverifiedShow Answer

Which of the three types of rock would you expect to be most abundant at the Earth's surface? Why? How does this relate to how these rocks form?

Correct AnswerverifiedSedimentary rocks are expected to be the...View AnswerShow Answer

Which of the following is true about regressions?

Correct AnswerverifiedShow Answer

Grains of sediments and fossils in the deep ocean tend to be ___________-sized because of the low amount of energy in the environment.

Correct AnswerverifiedShow Answer

Grains become rounded primarily during

Correct AnswerverifiedShow Answer

Biochemical limestones are dominated by carbonate mud and fragments of

Correct AnswerverifiedShow Answer

Compaction and cementation of grains occurs during

Correct AnswerverifiedShow Answer

Consult the figure below.Here,distinct internal laminations are inclined at an angle to the boundary of the main sedimentary layers.These are termed

Correct AnswerverifiedShow Answer

The image below shows ancient dunes exposed in Zion National Park in Utah.Using the interpreted portion of the image at the left,what was the dominant wind direction that formed these sedimentary structures?

Correct AnswerverifiedShow Answer

Stratification refers to

Correct AnswerverifiedShow Answer

Describe a rock formation that is bedded.How might this formation have formed?

Correct AnswerverifiedStudent answers might be similar to the ...View AnswerShow Answer

How are a marine transgression and regression different? What happens to the shoreline in each?

Correct AnswerverifiedTransgressions involve relativ...View AnswerShow Answer

What are the steps involved in the formation of a clastic sedimentary rock?

Correct AnswerverifiedClastic sedimentary rocks are formed by ...View AnswerShow Answer

As compared with metamorphism,diagenesis

Correct AnswerverifiedShow Answer

What type of sediment is typically found in lake bottoms?

Correct AnswerverifiedShow Answer

If a geologist found preserved mud cracks,they could conclude that the environment in which they formed

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
Passive-margin basins are form...
View Answer

Correct Answer
verified
An alluvial fan is a wedge-shaped accumu...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Sedimentary rocks are expected to be the...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Student answers might be similar to the ...
View Answer

Correct Answer
verified
Transgressions involve relativ...
View Answer

Correct Answer
verified
Clastic sedimentary rocks are formed by ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified