Question 1

Graded beds are commonly formed by:

Accepted Answer

A)  lateral migration of a sand dune. 
B)  drying and cracking of mud. 
C)  particles settling at different rates. 
D)  small waves or ripples. 
A)  lateral migration of a sand dune. 
B)  drying and cracking of mud. 
C)  particles settling at different rates. 
D)  small waves or ripples. C

Question 2

Detrital sediment texture is identified on the basis of:

Accepted Answer

A)  the mineral composition of the particles. 
B)  the way the sediments clump together in the formation of sedimentary rocks. 
C)  the relative percentages of each of the three categories of particle sizes. 
D)  the size, shape, and arrangement of the particles. 
A)  the mineral composition of the particles. 
B)  the way the sediments clump together in the formation of sedimentary rocks. 
C)  the relative percentages of each of the three categories of particle sizes. 
D)  the size, shape, and arrangement of the particles. D

Question 3

More than half of all sedimentary rocks are:

Accepted Answer

A)  conglomerate and breccia. 
B)  mudstone. 
C)  limestone. 
D)  sandstone. 
A)  conglomerate and breccia. 
B)  mudstone. 
C)  limestone. 
D)  sandstone. B

Question 4

How does cross- bedding form?

Accepted Answer

Sediment that is medium to coarse- grain

Question 5

Common cementing agents include all of the following EXCEPT:

Accepted Answer

A)  iron compounds. 
B)  olivine. 
C)  silica. 
D)  calcium carbonate. 
A)  iron compounds. 
B)  olivine. 
C)  silica. 
D)  calcium carbonate.

Question 6

Biogenic limestones that represent deep- marine environments are characterized by:

Accepted Answer

A)  sponge skeletons. 
B)  foraminifera skeletons. 
C)  radiolaria skeletons. 
D)  diatom skeletons. 
A)  sponge skeletons. 
B)  foraminifera skeletons. 
C)  radiolaria skeletons. 
D)  diatom skeletons.

Question 7

How do the particles of detrital sedimentary rocks become cemented together?

Accepted Answer

After deposition of sediments, water oft

Question 8

A sandstone with more than 25% feldspar and poorly sorted, angular grains is probably a(n):

Accepted Answer

A)  quartz arenite. 
B)  quartzite. 
C)  arkose. 
D)  graywacke. 
A)  quartz arenite. 
B)  quartzite. 
C)  arkose. 
D)  graywacke.

Question 9

Which of the following sediment- moving processes is most effective in delivering sediment from the transitional environments to the subduction zone?

Accepted Answer

A)  Turbidity currents. 
B)  Wind. 
C)  River currents. 
D)  Waves, tides, and ocean currents. 
A)  Turbidity currents. 
B)  Wind. 
C)  River currents. 
D)  Waves, tides, and ocean currents.

Question 10

All of the following statements concerning conglomerates and breccias are true EXCEPT:

Accepted Answer

A)  they are coarse grained. 
B)  their grain shapes indicate relative transport distances. 
C)  they are chemical sedimentary rocks. 
D)  they may contain fine matrix material. 
A)  they are coarse grained. 
B)  their grain shapes indicate relative transport distances. 
C)  they are chemical sedimentary rocks. 
D)  they may contain fine matrix material.

Question 11

Sandstones are classified on the basis of:

Accepted Answer

A)  color. 
B)  cleavage. 
C)  mineralogy of sand grains. 
D)  shape of their constituent particles. 
A)  color. 
B)  cleavage. 
C)  mineralogy of sand grains. 
D)  shape of their constituent particles.

Question 12

Continental sedimentary environments are characterized by:

Accepted Answer

A)  biogenic cherts. 
B)  biogenic limestones. 
C)  detrital sediments. 
D)  dolostone deposits. 
A)  biogenic cherts. 
B)  biogenic limestones. 
C)  detrital sediments. 
D)  dolostone deposits.

Question 13

Inorganic chemical sedimentary rocks are derived from:

Accepted Answer

A)  the dissolved products of chemical weathering that precipitate from solution. 
B)  igneous rock exposures. 
C)  sedimentary rock exposures. 
D)  metamorphic rock exposures. 
A)  the dissolved products of chemical weathering that precipitate from solution. 
B)  igneous rock exposures. 
C)  sedimentary rock exposures. 
D)  metamorphic rock exposures.

Question 14

Which of the following transport media generally results in the most well- sorted sediments?

Accepted Answer

A)  Rivers. 
B)  Landslides. 
C)  Wind. 
D)  Glaciers. 
A)  Rivers. 
B)  Landslides. 
C)  Wind. 
D)  Glaciers.

Question 15

What causes the coloration of sedimentary rocks?

Accepted Answer

The color in sedimentary rock is most fr

Question 16

Which of the following statements does NOT apply to all detrital sedimentary rocks?

Accepted Answer

A)  They are composed of particles that have been cemented together. 
B)  They possess a clastic texture. 
C)  They have undergone compaction and recrystallization. 
D)  They are classified on the basis of their particle sizes. 
A)  They are composed of particles that have been cemented together. 
B)  They possess a clastic texture. 
C)  They have undergone compaction and recrystallization. 
D)  They are classified on the basis of their particle sizes.

Question 17

Which of the following statements concerning the formation of coal is NOT true?

Accepted Answer

A)  Organic matter changes from peat, to lignite, to bituminous coal, and finally into anthracite coal. 
B)  Coal forms from the decomposition of organic matter in the absence of oxygen. 
C)  Coal is composed primarily of the remains of microorganisms. 
D)  The environment for deposition of coal is usually a swamp. 
A)  Organic matter changes from peat, to lignite, to bituminous coal, and finally into anthracite coal. 
B)  Coal forms from the decomposition of organic matter in the absence of oxygen. 
C)  Coal is composed primarily of the remains of microorganisms. 
D)  The environment for deposition of coal is usually a swamp.

Question 18

All of the following statements about cross- bedding are true EXCEPT:

Accepted Answer

A)  cross- bedding is usually formed by deposition of sediments from wind or water. 
B)  cross- beds form when particles drop from still water. 
C)  changes in direction of wind or water currents are recognizable within cross- beds. 
D)  cross- beds are formed when a sedimentary layer is deposited at an angle to the underlying bed. 
A)  cross- bedding is usually formed by deposition of sediments from wind or water. 
B)  cross- beds form when particles drop from still water. 
C)  changes in direction of wind or water currents are recognizable within cross- beds. 
D)  cross- beds are formed when a sedimentary layer is deposited at an angle to the underlying bed.

Question 19

Which one of the following may reveal the direction of a stream current?

Accepted Answer

A)  Mudcracks. 
B)  Asymmetrical ripple. 
C)  Graded bedding. 
D)  Symmetrical ripple. 
A)  Mudcracks. 
B)  Asymmetrical ripple. 
C)  Graded bedding. 
D)  Symmetrical ripple.

Question 20

Describe what is known about the formation of dolostone.

Accepted Answer

Dolostone is similar in structure and ap

Graded beds are commonly formed by:

Detrital sediment texture is identified on the basis of:

More than half of all sedimentary rocks are:

How does cross- bedding form?

Common cementing agents include all of the following EXCEPT:

Biogenic limestones that represent deep- marine environments are characterized by:

How do the particles of detrital sedimentary rocks become cemented together?

A sandstone with more than 25% feldspar and poorly sorted, angular grains is probably a(n):

Which of the following sediment- moving processes is most effective in delivering sediment from the transitional environments to the subduction zone?

All of the following statements concerning conglomerates and breccias are true EXCEPT:

Sandstones are classified on the basis of:

Continental sedimentary environments are characterized by:

Inorganic chemical sedimentary rocks are derived from:

Which of the following transport media generally results in the most well- sorted sediments?

What causes the coloration of sedimentary rocks?

Which of the following statements does NOT apply to all detrital sedimentary rocks?

Which of the following statements concerning the formation of coal is NOT true?

All of the following statements about cross- bedding are true EXCEPT:

Which one of the following may reveal the direction of a stream current?

Describe what is known about the formation of dolostone.

A First Look at Planet Earth - Its Origins, Systems, and Tectonic Plates

Minerals

Igneous Rocks and Processes

Volcanoes and Volcanism

Weathering - the Breakdown of Rocks

Metamorphism and Metamorphic Rocks

Telling Time Geologically

Earth Structures - Folds, Faults, and Fabrics

Earthquakes

The Earths Interior - Whats Going on Down There

Plate Tectonics and the Formation of the Earths Oceans

Continental Tectonics and the Formation of the Earths Continents

Mass Movement

Streams and Floods

Groundwater

Glaciers and Ice Ages

Deserts and the Work of Winds

Shores and Coastal Processes

Human Use of the Earths Resources Appendices Glossary

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Exam 6: Sedimentary Processes, Environments, and Rocks

Graded beds are commonly formed by:

Detrital sediment texture is identified on the basis of:

More than half of all sedimentary rocks are:

How does cross- bedding form?

Common cementing agents include all of the following EXCEPT:

Biogenic limestones that represent deep- marine environments are characterized by:

How do the particles of detrital sedimentary rocks become cemented together?

A sandstone with more than 25% feldspar and poorly sorted, angular grains is probably a(n):

Which of the following sediment- moving processes is most effective in delivering sediment from the transitional environments to the subduction zone?

All of the following statements concerning conglomerates and breccias are true EXCEPT:

Sandstones are classified on the basis of:

Continental sedimentary environments are characterized by:

Inorganic chemical sedimentary rocks are derived from:

Which of the following transport media generally results in the most well- sorted sediments?

What causes the coloration of sedimentary rocks?

Which of the following statements does NOT apply to all detrital sedimentary rocks?

Which of the following statements concerning the formation of coal is NOT true?

All of the following statements about cross- bedding are true EXCEPT:

Which one of the following may reveal the direction of a stream current?

Describe what is known about the formation of dolostone.

A First Look at Planet Earth - Its Origins, Systems, and Tectonic Plates

Minerals

Igneous Rocks and Processes

Volcanoes and Volcanism

Weathering - the Breakdown of Rocks

Metamorphism and Metamorphic Rocks

Telling Time Geologically

Earth Structures - Folds, Faults, and Fabrics

Earthquakes

The Earths Interior - Whats Going on Down There

Plate Tectonics and the Formation of the Earths Oceans

Continental Tectonics and the Formation of the Earths Continents

Mass Movement

Streams and Floods

Groundwater

Glaciers and Ice Ages

Deserts and the Work of Winds

Shores and Coastal Processes

Human Use of the Earths Resources Appendices Glossary

Filters