Question 1

Which of the following is most likely to be preserved as a carbonized impression?

Accepted Answer

A)  a dinosaur bone
B)  a buried log
C)  an oyster shell
D)  a leafE) All of the above
F) A) and C)

Question 2

Most chemical sediments derive from ________.

Accepted Answer

A)  industrial waste from multi-national corporations
B)  the soluble products of weathering, carried in solution to a warm, evaporating basin
C)  detrital minerals that are a single, pure, inorganic compound
D)  accumulations of organic matterE) None of the above
F) A) and C)

Question 3

What is the main difference between a conglomerate and a sedimentary breccia?

Accepted Answer

A)  Breccia clasts are angular; conglomerate clasts are rounded.
B)  A breccia is well stratified; a conglomerate is poorly stratified.
C)  Breccia clasts are the size of baseballs; conglomerate clasts are larger.
D)  Breccia has a compacted, clay-rich matrix; conglomerate has no matrix.E) A) and D)
F) A) and C)

Question 4

What does a sand that contains significant amounts of sand-sized rock fragments, blocky feldspar, and angular prismatic grains of ferromagnesian minerals suggest?

Accepted Answer

A)  that it has travelled a short distance and was likely deposited very close to the source of the particles
B)  that it has travelled a great distance in a uniform flow or has had more than one cycle of weathering, transport, and deposition.
C)  that it had a very low velocity of transport and likely a shallow stream gradient
D)  that it was derived from uplifted and eroded older sedimentary rocksE) A) and D)
F) C) and D)

Question 5

Detrital sedimentary rocks have clastic textures.

Accepted Answer

A) True 
 B)False

Question 6

How are playa lakes formed and what kind of deposits occur there?

Accepted Answer

By intermittent heavy rains or seasonal ...

Question 7

Describe the sediment character as to particle size and sorting for windblown dunes.

Accepted Answer

The answer of Describe the sediment character as to particle...

Question 8

Where would the sequence: laminated muds overlain by salts overlain by well sorted sands likely form?

Accepted Answer

playa lake/dunes, or...

Question 9

Mud cracks in a shale or mudstone indicate that the mud or clay was deposited in deep waters of an offshore marine environment.

Accepted Answer

A) True 
 B)False

Question 10

Which type of sand depositional environment would probably have the best degree of sorting?

Accepted Answer

A)  beach face
B)  dune
C)  river bar
D)  delta faceE) B) and C)
F) A) and B)

Question 11

Flint, chert, and jasper are microcrystalline forms of which mineral?

Accepted Answer

A)  quartz; SiO2
B)  hematite; Fe2O3
C)  halite; NaCl
D)  calcite; CaCO3E) B) and C)
F) All of the above

Question 12

How do water content and porosity vary with depth in sediments?

Accepted Answer

They decrease due to...

Question 13

Which of the following is fossilized resin from evergreen trees?

Accepted Answer

A)  burnt umber
B)  saprolite
C)  amber
D)  coproliteE) B) and C)
F) A) and D)

Question 14

Which of the following is a form of calcium carbonate found in cave formations and hot springs deposits?

Accepted Answer

A)  travertine
B)  chert
C)  lignite
D)  gypsumE) All of the above
F) A) and D)

Question 15

Well-preserved fossil insects are sometimes found in amber, a fossil tree resin.

Accepted Answer

A) True 
 B)False

Question 16

Many limestones are of biochemical origin.

Accepted Answer

A) True 
 B)False

Question 17

A succession of beds containing small scale asymmetric ripples that alternate their orientations are likely to be ________.

Accepted Answer

A)  cross-beds and indicates dunes, deltas, or migrating channels
B)  current ripple marks caused by reversing current directions or tides
C)  hummocks and indicates a deposit formed by storm enhanced waves or currents
D)  oscillation ripple marks from gentle wave action in a shallow near shore environmentE) B) and D)
F) B) and C)

Question 18

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases.
-Choose the option that does not fit the pattern.

Accepted Answer

A)  floodplain
B)  alluvial fan
C)  playa lakes
D)  lagoonE) B) and C)
F) A) and D)

Question 19

Chalk, coquina, and ancient coral reefs are primarily composed of microcrystalline quartz.

Accepted Answer

A) True 
 B)False

Question 20

Coal beds originate in what type of depositional environment?

Accepted Answer

A)  shallow lakes in a dry, desert region
B)  channels of fast-moving streams
C)  deep, marine basins below wave action
D)  freshwater coastal swamps and bogsE) A) and B)
F) A) and C)

Exam 6: Sedimentary Rocks

Chalk, coquina, and ancient coral reefs are primarily composed of microcrystalline quartz.

Correct AnswerverifiedShow Answer

Well-preserved fossil insects are sometimes found in amber, a fossil tree resin.

Correct AnswerverifiedShow Answer

A succession of beds containing small scale asymmetric ripples that alternate their orientations are likely to be ________.

Correct AnswerverifiedShow Answer

Coal beds originate in what type of depositional environment?

Correct AnswerverifiedShow Answer

Which of the following is fossilized resin from evergreen trees?

Correct AnswerverifiedShow Answer

Mud cracks in a shale or mudstone indicate that the mud or clay was deposited in deep waters of an offshore marine environment.

Correct AnswerverifiedShow Answer

How do water content and porosity vary with depth in sediments?

Correct AnswerverifiedThey decrease due to...View AnswerShow Answer

Many limestones are of biochemical origin.

Correct AnswerverifiedShow Answer

Which of the following is most likely to be preserved as a carbonized impression?

Correct AnswerverifiedShow Answer

What does a sand that contains significant amounts of sand-sized rock fragments, blocky feldspar, and angular prismatic grains of ferromagnesian minerals suggest?

Correct AnswerverifiedShow Answer

Where would the sequence: laminated muds overlain by salts overlain by well sorted sands likely form?

Correct Answerverifiedplaya lake/dunes, or...View AnswerShow Answer

Describe the sediment character as to particle size and sorting for windblown dunes.

Correct AnswerverifiedShow Answer

Most chemical sediments derive from ________.

Correct AnswerverifiedShow Answer

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

Correct AnswerverifiedShow Answer

What is the main difference between a conglomerate and a sedimentary breccia?

Correct AnswerverifiedShow Answer

Flint, chert, and jasper are microcrystalline forms of which mineral?

Correct AnswerverifiedShow Answer

How are playa lakes formed and what kind of deposits occur there?

Correct AnswerverifiedBy intermittent heavy rains or seasonal ...View AnswerShow Answer

Detrital sedimentary rocks have clastic textures.

Correct AnswerverifiedShow Answer

Which type of sand depositional environment would probably have the best degree of sorting?

Correct AnswerverifiedShow Answer

Which of the following is a form of calcium carbonate found in cave formations and hot springs deposits?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
They decrease due to...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
playa lake/dunes, or...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
By intermittent heavy rains or seasonal ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified