Question 1

A clast of granite found in a breccia is dated at 450 million years old. What can you conclude about the breccia?

Accepted Answer

A)  The breccia is older than 450 million years. 
B)  The breccia is younger than 450 million years old. 
C)  The breccia was metamorphosed more than 450 million years ago. 
D)  The breccia was metamorphosed fewer than 450 million years ago. 
E)  You can't draw any conclusions.

Question 2

____________________ form when ____________________ are filled with minerals and sediment.

Accepted Answer

The answer of ____________________ form when ____________________ are filled with...

Question 3

When minerals replace the bodily remains during fossilization, we say the fossil has been ____.

Accepted Answer

A)  molded 
B)  dissolved 
C)  altered 
D)  indexed 
E)  regurgitated

Question 4

In a marine transgression, sediments within a sedimentary facies are deposited at the same time.

Accepted Answer

A) True 
 B)False

Question 5

Walther's Law states that facies in a conformable vertical sequence will also occur in a lateral sequence.

Accepted Answer

A) True 
 B)False

Question 6

What is one way for an unconformity to develop?

Accepted Answer

A)  erosion 
B)  deposition 
C)  transgression 
D)  regression 
E)  lithification

Question 7

Time units are rock units that were deposited during a certain time interval.

Accepted Answer

A) True 
 B)False

Question 8

What process is used to demonstrate that two rock strata are equivalent?

Accepted Answer

A)  equivalency. 
B)  interpolation. 
C)  extrapolation. 
D)  correlation. 
E)  integration

Question 9

The three types of unconformities are ____________________, ____________________, and ____________________.

Accepted Answer

The answer of The three types of unconformities are ____________________,...

Question 10

____________________ is largely responsible for developing the principle of fossil succession (also called the principle of faunal succession).

Accepted Answer

The answer of ____________________ is largely responsible for developing the...

Question 11

An unconformity in which stratified sedimentary rocks overlie an erosional surface cut into igneous or metamorphic rocks is called a(n)____.

Accepted Answer

A)  nonconformity 
B)  disconformity 
C)  guide fossil 
D)  transgression 
E)  angular unconformity

Question 12

Lithostratigraphic correlations are made on the basis of similarity of rock type over wide areas.

Accepted Answer

A) True 
 B)False

Question 13

You observe two shale beds separated by 300 kilometers. The rocks in the two shale beds are similar, but one bed is several million years older than the other. You can conclude both beds ____.

Accepted Answer

A)  are time-correlated 
B)  contain the same guide fossils 
C)  are lithologically correlated 
D)  are time correlated and contain the same guide fossils 
E)  are unrelated

Question 14

Discuss Walther's law and its application to determine marine transgressions and regressions.

Accepted Answer

The answer of Discuss Walther's law and its application to...

Question 15

In a sequence of undisturbed sedimentary rocks, the oldest fossils will be ____.

Accepted Answer

A)  in the top rock layer 
B)  in the middle rock layer 
C)  in the bottom rock layer 
D)  unable to be determined 
E)  indistinguishable from the other fossils

Question 16

Formations consist of rocks that are all the same age.

Accepted Answer

A) True 
 B)False

Question 17

A break or gap in the geologic record resulting from erosion or nondeposition or both is a(n) ____.

Accepted Answer

A)  inclusion 
B)  cast 
C)  formation 
D)  extinction 
E)  unconformity

Question 18

The Devonian system refers to the rocks deposited during the time of the Devonian period.

Accepted Answer

A) True 
 B)False

Question 19

Guide fossils are most useful because they ____.

Accepted Answer

A)  occur over a small geographic area 
B)  occur over a brief time interval 
C)  are difficult to identify 
D)  occur over a long period of time 
E)  occur in all rock types

Question 20

According to the principle of ____________________, fossil assemblages succeed one another through time in a regular and determinable order.

Accepted Answer

The answer of According to the principle of ____________________, fossil...

Exam 5: Rocks Fossils and Time Making Sense of the Geologic Record

A clast of granite found in a breccia is dated at 450 million years old. What can you conclude about the breccia?

form when are filled with minerals and sediment.

When minerals replace the bodily remains during fossilization, we say the fossil has been ____.

In a marine transgression, sediments within a sedimentary facies are deposited at the same time.

Walther's Law states that facies in a conformable vertical sequence will also occur in a lateral sequence.

What is one way for an unconformity to develop?

Time units are rock units that were deposited during a certain time interval.

What process is used to demonstrate that two rock strata are equivalent?

The three types of unconformities are , , and .

____________________ is largely responsible for developing the principle of fossil succession (also called the principle of faunal succession).

An unconformity in which stratified sedimentary rocks overlie an erosional surface cut into igneous or metamorphic rocks is called a(n) ____.

Lithostratigraphic correlations are made on the basis of similarity of rock type over wide areas.

You observe two shale beds separated by 300 kilometers. The rocks in the two shale beds are similar, but one bed is several million years older than the other. You can conclude both beds ____.

Discuss Walther's law and its application to determine marine transgressions and regressions.

In a sequence of undisturbed sedimentary rocks, the oldest fossils will be ____.

Formations consist of rocks that are all the same age.

A break or gap in the geologic record resulting from erosion or nondeposition or both is a(n) ____.

The Devonian system refers to the rocks deposited during the time of the Devonian period.

Guide fossils are most useful because they ____.

According to the principle of ____________________, fossil assemblages succeed one another through time in a regular and determinable order.