Question 1

What is the usual order, first to last, for the precipitation of the following evaporite minerals from concentrated seawater?

Accepted Answer

A)  halite, sylvite, gypsum
B)  gypsum, halite, sylvite
C)  sylvite, halite, gypsum
D)  sylvite, gypsum, haliteE) B) and C)
F) A) and D)

Question 2

Which type of sandstone contains abundant, clayey, matrix material?

Accepted Answer

A)  brownstone
B)  wacke
C)  arkose
D)  chertyE) C) and D)
F) None of the above

Question 3

The oldest multicellular organisms from the ________ are known only as imprints and have no hard body parts for any of the fauna.

Accepted Answer

A)  Azoic Acasta Gneiss
B)  Middle Cambrian Burgess Shale
C)  Permo-Triassic massive extinction event
D)  Precambrian Ediacaran FaunaE) All of the above
F) B) and C)

Question 4

In what environment are deltas typically formed, and why are they formed there?

Accepted Answer

A)  around the middles of large lakes far from shore; there is no farther for the sediments to go
B)  in desert environments in the middles of continents far from the mountains; there is no water or wind left to carry sediment any farther
C)  in submarine river systems because of the "delta" shape of the seafloor basins
D)  transitional; decrease in slope (gradient) and sediment carrying powerE) C) and D)
F) A) and D)

Question 5

What setting is suggested by a circular region about 40 km across with predominant shales, a thick sandy delta sequence at one end, and both of them surrounded by a thin rim of sandy, well sorted beach deposits?

Accepted Answer

A)  glacial location of a former ice cap
B)  lake
C)  small marine basin in the middle of the ocean
D)  meandering river depositsE) C) and D)
F) B) and D)

Question 6

Explain how small delicate crystals of siderite (iron carbonate)could come to be in the pores of a dinosaur bone.

Accepted Answer

by petrification wherein the m...

Question 7

Name three different things we can infer from fossils in sedimentary strata.

Accepted Answer

geologic time period (law of faunal succ...

Question 8

Mudrocks have generally been compacted by up to 40% compared to their original sedimentary thickness and form.

Accepted Answer

A) True 
 B)False

Question 9

The correct order for increasing carbon content and coal rank is ________.

Accepted Answer

A)  anthracite, lignite, peat, bituminous
B)  bituminous, lignite, anthracite, peat
C)  lignite, peat, bituminous, anthracite
D)  peat, lignite, bituminous, anthraciteE) None of the above
F) A) and D)

Question 10

What is probably the single most important, original, depositional feature in all sedimentary rocks?

Accepted Answer

A)  cementation of the sand grains
B)  degree of lithification
C)  bedding or stratification
D)  compaction of the mud and clayE) B) and D)
F) B) and C)

Question 11

Where would you find small arcuate bodies of coarse limestones surrounded by shales?

Accepted Answer

reefs frin...

Question 12

What kind of depositional environment (facies) makes linear sand bodies?

Accepted Answer

A)  atolls
B)  bars, spits, and barrier islands
C)  deltas
D)  lagoonsE) A) and B)
F) All of the above

Question 13

An irregular pile of laminated sandy beds which are lens shaped in two directions and have low angle cross stratifications are called ________.

Accepted Answer

A)  current ripple marks and indicate uniform tidal currents
B)  graded beds and indicates deep water turbidity currents off the continental slope
C)  hummocky cross stratification 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) A) and D)
F) A) and C)

Question 14

What rock type would be made from rounded grains of various rock types ranging from 1 to 250 millimetres?

Accepted Answer

A)  conglomeratic sandstone
B)  conglomeratic mudstone
C)  lithic sandstone
D)  pebbly mudstoneE) C) and D)
F) None of the above

Question 15

Compaction is a very important part of the lithification process for which of the following sediments?

Accepted Answer

A)  gravel
B)  sand
C)  mud
D)  cobbleE) C) and D)
F) None of the above

Question 16

What is the most common group of rocks exposed or cropping out on continents?

Accepted Answer

sedimentar...

Question 17

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)  lithification
B)  cementation
C)  weathering
D)  compactionE) B) and D)
F) B) and C)

Question 18

Zircon and tourmaline are dense, highly insoluble, physically tough, chemically stable, minor minerals of igneous and metamorphic rocks.In which sedimentary rock might you expect to find these minerals concentrated?

Accepted Answer

A)  sandstone lithified from quartz-rich beach sand
B)  limestone representing lithified coral-reef carbonates
C)  a thin, upper, mudstone portion of a thick wacke bed with graded bedding
D)  evaporite deposits of gypsum and saltE) None of the above
F) A) and B)

Question 19

What is the hardest cementing mineral commonly found in sedimentary rocks?

Accepted Answer

The answer of What is the hardest cementing mineral commonly...

Question 20

Which limestone consists mainly of tiny, marine fossils composed of calcite?

Accepted Answer

A)  dolostone
B)  chert
C)  coquina
D)  chalkE) C) and D)
F) B) and D)

Exam 6: Sedimentary Rocks

What kind of depositional environment (facies) makes linear sand bodies?

Correct AnswerverifiedShow Answer

What is the hardest cementing mineral commonly found in sedimentary rocks?

Correct AnswerverifiedShow Answer

Which limestone consists mainly of tiny, marine fossils composed of calcite?

Correct AnswerverifiedShow Answer

Explain how small delicate crystals of siderite (iron carbonate)could come to be in the pores of a dinosaur bone.

Correct Answerverifiedby petrification wherein the m...View AnswerShow Answer

What rock type would be made from rounded grains of various rock types ranging from 1 to 250 millimetres?

Correct AnswerverifiedShow Answer

Zircon and tourmaline are dense, highly insoluble, physically tough, chemically stable, minor minerals of igneous and metamorphic rocks.In which sedimentary rock might you expect to find these minerals concentrated?

Correct AnswerverifiedShow Answer

Mudrocks have generally been compacted by up to 40% compared to their original sedimentary thickness and form.

Correct AnswerverifiedShow Answer

In what environment are deltas typically formed, and why are they formed there?

Correct AnswerverifiedShow Answer

The correct order for increasing carbon content and coal rank is ________.

Correct AnswerverifiedShow Answer

What is probably the single most important, original, depositional feature in all sedimentary rocks?

Correct AnswerverifiedShow Answer

What setting is suggested by a circular region about 40 km across with predominant shales, a thick sandy delta sequence at one end, and both of them surrounded by a thin rim of sandy, well sorted beach deposits?

Correct AnswerverifiedShow Answer

What is the most common group of rocks exposed or cropping out on continents?

Correct Answerverifiedsedimentar...View AnswerShow 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

Which type of sandstone contains abundant, clayey, matrix material?

Correct AnswerverifiedShow Answer

Name three different things we can infer from fossils in sedimentary strata.

Correct Answerverifiedgeologic time period (law of faunal succ...View AnswerShow Answer

What is the usual order, first to last, for the precipitation of the following evaporite minerals from concentrated seawater?

Correct AnswerverifiedShow Answer

An irregular pile of laminated sandy beds which are lens shaped in two directions and have low angle cross stratifications are called ________.

Correct AnswerverifiedShow Answer

Compaction is a very important part of the lithification process for which of the following sediments?

Correct AnswerverifiedShow Answer

The oldest multicellular organisms from the ________ are known only as imprints and have no hard body parts for any of the fauna.

Correct AnswerverifiedShow Answer

Where would you find small arcuate bodies of coarse limestones surrounded by shales?

Correct Answerverifiedreefs frin...View AnswerShow Answer

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by petrification wherein the m...
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sedimentar...
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geologic time period (law of faunal succ...
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reefs frin...
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