Question 1

Which characteristic is absolutely necessary for a sedimentary rock to have potential as a possible reservoir rock for oil or gas?

Accepted Answer

A)  high permeability
B)  good stratification
C)  chemical origin
D)  clastic textureE) All of the above
F) None of the above

Question 2

Which of the following sedimentary features can each be used to determine paleocurrent directions?

Accepted Answer

A)  fossils and mud cracks
B)  grain size sorting and ripple marks
C)  mud cracks and ripple marks
D)  ripple marks and cross stratificationE) A) and D)
F) A) and C) D

Question 3

Sandstones are lithified mainly by cementation. What is the major process involved in the lithification of shales?

Accepted Answer

The answer of Sandstones are lithified mainly by cementation. What...

Question 4

Which one of the following is not a chemical sedimentary rock or evaporite?

Accepted Answer

A)  shale
B)  bedded gypsum
C)  oolitic limestone
D)  cherty dolostoneE) A) and D)
F) B) and C)

Question 5

Flint, chert, and jasper are microcrystalline forms of ________.

Accepted Answer

A)  halite (NaCl) 
B)  quartz; (SiO2) 
C)  calcite (CaCO3) 
D)  hematite (Fe2O3) E) A) and B)
F) A) and C)

Question 6

The study of depositional environments in sedimentary rocks is critical to understanding Earth's history. What features or characteristics of sedimentary rocks are unique to particular environments? What features are found in a variety of environments and are therefore less definitive for interpreting paleoenvironments?

Accepted Answer

Sedimentary facies are key to understand...

Question 7

A cherty limestone would contain which major constituents?

Accepted Answer

A)  silica, iron oxide
B)  clay minerals
C)  iron oxide, calcite
D)  silica, calciteE) A) and C)
F) A) and D) D

Question 8

Which evaporite sedimentary rock, composed of calcium sulfate, is an important component of plasters and wallboard?

Accepted Answer

The answer of Which evaporite sedimentary rock, composed of calcium...

Question 9

Which major component of detrital sedimentary rocks only rarely occurs as a primary mineral in igneous rocks?

Accepted Answer

A)  clays
B)  quartz
C)  carbonates
D)  ferromagnesian mineralsE) A) and B)
F) A) and C)

Question 10

What is the most characteristic, original, depositional feature preserved in sedimentary rocks?

Accepted Answer

The answer of What is the most characteristic, original, depositional...

Question 11

Oolitic limestone is most likely to form in what type of depositional environment?

Accepted Answer

A)  deep, marine waters below most wave action
B)  shallow, clear, marine waters with vigorous current activity
C)  acidic, organic- rich waters in freshwater swamps and bogs
D)  quiet, muddy, lagoons and baysE) A) and B)
F) A) and C)

Question 12

_______is a form of calcium carbonate.

Accepted Answer

A)  Lignite
B)  Chert
C)  Travertine
D)  GypsumE) A) and B)
F) A) and C)

Question 13

What is the most abundant mineral in detrital sedimentary rocks?

Accepted Answer

The answer of What is the most abundant mineral in...

Question 14

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

Accepted Answer

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

Question 15

What term describes the complex, original stratification pattern seen in sandstones deposited in ancient sand dunes?

Accepted Answer

The answer of What term describes the complex, original stratification...

Question 16

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

Accepted Answer

A)  sizes of the sand grains
B)  bedding or stratification
C)  compaction of the mud and clay
D)  degree of lithificationE) All of the above
F) None of the above

Question 17

What are the three, most common, cementing agents for sandstones?

Accepted Answer

silica, ca...

Question 18

Which of the following sedimentary features would typically be found in shales but not in sandstones?

Accepted Answer

A)  bedding
B)  mud cracks
C)  cross stratification
D)  ripple marksE) C) and D)
F) A) and B)

Question 19

What is the chemical formula for dolomite, the major mineral in dolostones?

Accepted Answer

A)  SiO2
B)  CaSO4 · 2H2O
C)  CaMg(CO3) 2
D)  NaClE) A) and B)
F) A) and C)

Question 20

Which of the following best describes bedded gypsum and halite?

Accepted Answer

A)  varieties of coal and peat
B)  evaporates
C)  detrital sedimentary rocks
D)  varieties of dolostoneE) A) and D)
F) B) and C) B

Exam 7: Sedimentary Rocks

Which characteristic is absolutely necessary for a sedimentary rock to have potential as a possible reservoir rock for oil or gas?

Correct Answer
verified

Which of the following sedimentary features can each be used to determine paleocurrent directions?

Correct Answer
verified
D

Sandstones are lithified mainly by cementation. What is the major process involved in the lithification of shales?

Correct Answer
verified

Which one of the following is not a chemical sedimentary rock or evaporite?

Correct Answer
verified

Flint, chert, and jasper are microcrystalline forms of ________.

Correct Answer
verified

Correct Answer
verified
Sedimentary facies are key to understand...
View Answer

A cherty limestone would contain which major constituents?

Correct Answer
verified
D

Which evaporite sedimentary rock, composed of calcium sulfate, is an important component of plasters and wallboard?

Correct Answer
verified

Which major component of detrital sedimentary rocks only rarely occurs as a primary mineral in igneous rocks?

Correct Answer
verified

What is the most characteristic, original, depositional feature preserved in sedimentary rocks?

Correct Answer
verified

Oolitic limestone is most likely to form in what type of depositional environment?

Correct Answer
verified

_______is a form of calcium carbonate.

Correct Answer
verified

What is the most abundant mineral in detrital sedimentary rocks?

Correct Answer
verified

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

Correct Answer
verified

What term describes the complex, original stratification pattern seen in sandstones deposited in ancient sand dunes?

Correct Answer
verified

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

Correct Answer
verified

What are the three, most common, cementing agents for sandstones?

Correct Answer
verified
silica, ca...
View Answer

Which of the following sedimentary features would typically be found in shales but not in sandstones?

Correct Answer
verified

What is the chemical formula for dolomite, the major mineral in dolostones?

Correct Answer
verified

Which of the following best describes bedded gypsum and halite?

Correct Answer
verified
B

Exam 7: Sedimentary Rocks

Which characteristic is absolutely necessary for a sedimentary rock to have potential as a possible reservoir rock for oil or gas?

Correct AnswerverifiedShow Answer

Which of the following sedimentary features can each be used to determine paleocurrent directions?

Correct AnswerverifiedD

Sandstones are lithified mainly by cementation. What is the major process involved in the lithification of shales?

Correct AnswerverifiedShow Answer

Which one of the following is not a chemical sedimentary rock or evaporite?

Correct AnswerverifiedShow Answer

Flint, chert, and jasper are microcrystalline forms of ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedSedimentary facies are key to understand...View AnswerShow Answer

A cherty limestone would contain which major constituents?

Correct AnswerverifiedD

Which evaporite sedimentary rock, composed of calcium sulfate, is an important component of plasters and wallboard?

Correct AnswerverifiedShow Answer

Which major component of detrital sedimentary rocks only rarely occurs as a primary mineral in igneous rocks?

Correct AnswerverifiedShow Answer

What is the most characteristic, original, depositional feature preserved in sedimentary rocks?

Correct AnswerverifiedShow Answer

Oolitic limestone is most likely to form in what type of depositional environment?

Correct AnswerverifiedShow Answer

_______is a form of calcium carbonate.

Correct AnswerverifiedShow Answer

What is the most abundant mineral in detrital sedimentary rocks?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What term describes the complex, original stratification pattern seen in sandstones deposited in ancient sand dunes?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What are the three, most common, cementing agents for sandstones?

Correct Answerverifiedsilica, ca...View AnswerShow Answer

Which of the following sedimentary features would typically be found in shales but not in sandstones?

Correct AnswerverifiedShow Answer

What is the chemical formula for dolomite, the major mineral in dolostones?

Correct AnswerverifiedShow Answer

Which of the following best describes bedded gypsum and halite?

Correct AnswerverifiedB

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Sedimentary facies are key to understand...
View Answer

Correct Answer
verified
D

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

Correct Answer
verified
silica, ca...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B