Question 1

Explain why understanding the depositional environments of sedimentary rocks are sometimes economically important.

Accepted Answer

Important economic resources,such as mineral deposits,oil,and gas,are found in sedimentary rocks.By understanding how these resources are related to sedimentary processes,geologists can more effectively predict where these deposits will occur.

Question 2

Chert is hard rock consisting of microscopic crystals of silica that was shaped into sharp cutting tools by early humans.

Accepted Answer

A) True 
 B)False  True

Question 3

Wind blown deposits tend to be very well sorted.

Accepted Answer

A) True 
 B)False  True

Question 4

What are the requirements for a rock body to serve as a reservoir rock for hydrocarbons?

Accepted Answer

The rock must be capable of tr

Question 5

Under what conditions does coal form?

Accepted Answer

Coal forms when plant material

Question 6

The two major types of sediments that may become sedimentary rocks are ____________________ and ____________________.

Accepted Answer

detrital,c

Question 7

What are three ways in which hydrocarbons can be trapped in reservoir rock?

Accepted Answer

stratigrap

Question 8

Rock units with sheet-like geometry were most likely deposited during marine ____________________ or ____________________.

Accepted Answer

transgress

Question 9

All detrital sedimentary rocks have a _______ texture.

Accepted Answer

The answer of All detrital sedimentary rocks have a _______...

Question 10

The steam channel,floodplain,lake,beach or deep seafloor where a sediment is laid down is known as its _______ _______.

Accepted Answer

deposition

Question 11

If all of the grains in a sedimentary rock are about the same size,shape,and composition,what can the rock can be characterized as?

Accepted Answer

A)  cemented 
B)  compacted 
C)  cross bedded 
D)  graded 
E)  well-sorted 
A)  cemented 
B)  compacted 
C)  cross bedded 
D)  graded 
E)  well-sorted

Question 12

The basis for classifying detrital sediments and their rocks is ____________________.

Accepted Answer

The answer of The basis for classifying detrital sediments and...

Question 13

Which coal contains the most carbon and is the hottest burning?

Accepted Answer

A)  lignite 
B)  anthracite 
C)  bituminous 
D)  peat 
E)  subbituminous 
A)  lignite 
B)  anthracite 
C)  bituminous 
D)  peat 
E)  subbituminous

Question 14

Any mass of material that can be easily separated from the enclosing rock is a

Accepted Answer

A)  primary sedimentary structure. 
B)  septaria. 
C)  geode. 
D)  concretion. 
A)  primary sedimentary structure. 
B)  septaria. 
C)  geode. 
D)  concretion.

Question 15

Chemical sedimentary rocks generally have an interlocking grain texture called what?

Accepted Answer

A)  clastic 
B)  porphyritic 
C)  particulate 
D)  crystalline 
E)  detrital 
A)  clastic 
B)  porphyritic 
C)  particulate 
D)  crystalline 
E)  detrital

Question 16

Sedimentary rocks can undergo lithification by

Accepted Answer

A)  compaction 
B)  cementation 
C)  dissolution 
D)  compaction and cementation 
A)  compaction 
B)  cementation 
C)  dissolution 
D)  compaction and cementation

Question 17

How does graded bedding form?

Accepted Answer

A fast-moving current first de

Question 18

The United States is the world's largest producer and exporter of uranium.

Accepted Answer

A) True 
 B)False

Question 19

A vertical sequence of a(n)____________________ facies shows an offshore facies superposed on nearshore facies.

Accepted Answer

The answer of A vertical sequence of a(n)____________________ facies shows...

Question 20

How do detrital sedimentary rocks differ from chemical sedimentary rocks?

Accepted Answer

Detrital sedimentary rocks are made from

Exam 7: Sediment and Sedimentary Rocks

Explain why understanding the depositional environments of sedimentary rocks are sometimes economically important.

Chert is hard rock consisting of microscopic crystals of silica that was shaped into sharp cutting tools by early humans.

Wind blown deposits tend to be very well sorted.

What are the requirements for a rock body to serve as a reservoir rock for hydrocarbons?

Under what conditions does coal form?

The two major types of sediments that may become sedimentary rocks are ____________________ and ____________________.

What are three ways in which hydrocarbons can be trapped in reservoir rock?

Rock units with sheet-like geometry were most likely deposited during marine ____________________ or ____________________.

All detrital sedimentary rocks have a _______ texture.

The steam channel,floodplain,lake,beach or deep seafloor where a sediment is laid down is known as its _______ _______.

If all of the grains in a sedimentary rock are about the same size,shape,and composition,what can the rock can be characterized as?

The basis for classifying detrital sediments and their rocks is ____________________.

Which coal contains the most carbon and is the hottest burning?

Any mass of material that can be easily separated from the enclosing rock is a

Chemical sedimentary rocks generally have an interlocking grain texture called what?

Sedimentary rocks can undergo lithification by

How does graded bedding form?

The United States is the world's largest producer and exporter of uranium.

A vertical sequence of a(n)____________________ facies shows an offshore facies superposed on nearshore facies.

How do detrital sedimentary rocks differ from chemical sedimentary rocks?

Understanding Earth: A Dynamic and Evolving Planet

Plate Tectonics: A Unifying Theory

Minerals The Building Blocks of Rocks

Igneous Rocks and Plutons

Volcanoes and Volcanism

Weathering, Erosion, and Soil

Metamorphism and Metamorphic Rocks

Earthquakes and Earth's Interior

Deformation,Mountain Building,and Earth's Crust

Mass Wasting

Running Water Streams and Rivers

Groundwater

Glaciers and Glaciation

The Work of Wind and Deserts

Oceans, Shorelines, and Shoreline Processes

Geologic Time: Concepts and Principles

Organic Evolution The Theory and Its Supporting Evidence

Precambrian Earth and Life History

Paleozoic Earth History

Paleozoic Life History

Mesozoic Earth and Life History

Cenozoic Earth and Life History

Geology in Perspective

Filters

The two major types of sediments that may become sedimentary rocks are and .

Rock units with sheet-like geometry were most likely deposited during marine or .

The steam channel,floodplain,lake,beach or deep seafloor where a sediment is laid down is known as its _ _.