Question 1

Which of the following are hydrogenous sediments?

Accepted Answer

A)   quartz sand
B)   evaporites
C)   siliceous oozes
D)   tektitesE) A) and B)
F) A) and D)

Question 2

Which of the following is a major source of terrigenous sediments?

Accepted Answer

A)   Erosion.
B)   Dissolved organic material.
C)   Dissolved nutrients.
D)   Precipitation over the open ocean.E) None of the above
F) All of the above A

Question 3

Clays are the coarsest and most easily transported of the terrigenous sediments.

Accepted Answer

A) True 
 B)False

Question 4

The age of most marine sediments is:

Accepted Answer

A)   no older than about 10,000 years old.
B)   about 1 million years old.
C)   rarely older than about 180 million years old.
D)   not possible to determine.E) A) and B)
F) A) and C)

Question 5

Sediment refers to the inorganic materials that accumulate on the ocean floor.

Accepted Answer

A) True 
 B)False

Question 6

Scientists use ocean sediments to obtain information about ocean processes throughout the history of the ocean.

Accepted Answer

A) True 
 B)False

Question 7

Describe neritic sediments and explain what you would expect the composition of a typical neritic sample to be.

Accepted Answer

Neritic sediments are those that form an...

Question 8

Sediments that originate in the ocean are called:

Accepted Answer

A)   pelagic sediments.
B)   abyssal sediments.
C)   biogenous sediments.
D)   neritic sediments.E) None of the above
F) A) and B)

Question 9

All of the following are valid methods for classifying sediments EXCEPT:

Accepted Answer

A)   the size and settling rate of sediment grains.
B)   the thickness of sediment layers.
C)   the source material of the sediment.
D)   the location on the sea floor where the sediment accumulates.E) None of the above
F) C) and D)

Question 10

One area in the ocean that has an extreme abundance of sediment deposition is:

Accepted Answer

A)   the shallow waters around Alaska.
B)   the waters around the tip of Africa.
C)   the deep ocean floor in the middle of the Pacific Ocean.
D)   the waters near the Gulf Coast of North America.E) All of the above
F) A) and B)

Question 11

Stratigraphy is the study of the deposition and layering of sediments over time.

Accepted Answer

A) True 
 B)False  True

Question 12

What are the main sources of terrigenous sediments?

Accepted Answer

Terrigenous sediments are those sediment...

Question 13

Which statement characterizes sediments of the North Pacific?

Accepted Answer

A)   The sediments of the North Pacific are primarily composed of radiolarian deposits.
B)   The sediments of the North Pacific are thicker than the sediments of the Atlantic.
C)   The sediments of the deep North Pacific are mainly pelagic clays.
D)   The sediments of the North Pacific are mostly calcareous oozes.E) A) and D)
F) B) and D)

Question 14

Which of the following is generated in place, on the spot where we find them?

Accepted Answer

A)   terrigenous sediments
B)   biogenous sediments
C)   hydrogenous (or authigenic)  sediments
D)   cosmogenous sedimentsE) A) and B)
F) B) and D)

Question 15

Neritic sediments are found on the:

Accepted Answer

A)   deep ocean floor mostly in the Atlantic Ocean.
B)   continental shelf.
C)   continental rise.
D)   abyssal plains.E) B) and C)
F) C) and D)

Question 16

A layer of sediment that contains a mixture of sediments with various sizes is referred to as:

Accepted Answer

A)   homogeneous.
B)   poorly sorted.
C)   well-sorted.
D)   eroding sediments.E) None of the above
F) All of the above

Question 17

In the process of lithification, sediments:

Accepted Answer

A)   are subducted into the mantle at a deep trench.
B)   are converted into solid rock.
C)   slip into the center of the mid-ocean ridges and become new seafloor.
D)   are uplifted to form the edges of continents.E) B) and D)
F) All of the above

Question 18

Which of the following is of organic origin; i.e., made by organisms?

Accepted Answer

A)   terrigenous sediments
B)   biogenous sediments
C)   hydrogenous (or authigenic)  sediments
D)   cosmogenous sediments.E) None of the above
F) A) and B)

Question 19

The white cliffs of Dover are chalk-like deposits of coccolithophores and are around 100 million years old.

Accepted Answer

A) True 
 B)False  True

Question 20

What is the origin of manganese nodules?

Accepted Answer

Manganese nodules are hydrogenous sedime...

Exam 5: Ocean Sediments

Which of the following are hydrogenous sediments?

Correct AnswerverifiedShow Answer

Which of the following is a major source of terrigenous sediments?

Correct AnswerverifiedA

Clays are the coarsest and most easily transported of the terrigenous sediments.

Correct AnswerverifiedShow Answer

The age of most marine sediments is:

Correct AnswerverifiedShow Answer

Sediment refers to the inorganic materials that accumulate on the ocean floor.

Correct AnswerverifiedShow Answer

Scientists use ocean sediments to obtain information about ocean processes throughout the history of the ocean.

Correct AnswerverifiedShow Answer

Describe neritic sediments and explain what you would expect the composition of a typical neritic sample to be.

Correct AnswerverifiedNeritic sediments are those that form an...View AnswerShow Answer

Sediments that originate in the ocean are called:

Correct AnswerverifiedShow Answer

All of the following are valid methods for classifying sediments EXCEPT:

Correct AnswerverifiedShow Answer

One area in the ocean that has an extreme abundance of sediment deposition is:

Correct AnswerverifiedShow Answer

Stratigraphy is the study of the deposition and layering of sediments over time.

Correct AnswerverifiedTrue

What are the main sources of terrigenous sediments?

Correct AnswerverifiedTerrigenous sediments are those sediment...View AnswerShow Answer

Which statement characterizes sediments of the North Pacific?

Correct AnswerverifiedShow Answer

Which of the following is generated in place, on the spot where we find them?

Correct AnswerverifiedShow Answer

Neritic sediments are found on the:

Correct AnswerverifiedShow Answer

A layer of sediment that contains a mixture of sediments with various sizes is referred to as:

Correct AnswerverifiedShow Answer

In the process of lithification, sediments:

Correct AnswerverifiedShow Answer

Which of the following is of organic origin; i.e., made by organisms?

Correct AnswerverifiedShow Answer

The white cliffs of Dover are chalk-like deposits of coccolithophores and are around 100 million years old.

Correct AnswerverifiedTrue

What is the origin of manganese nodules?

Correct AnswerverifiedManganese nodules are hydrogenous sedime...View AnswerShow Answer

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Neritic sediments are those that form an...
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True

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Terrigenous sediments are those sediment...
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Manganese nodules are hydrogenous sedime...
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