Download Relative Age Dating and Correlation Review

Relative Age Dating and Correlation Review
1. Put the following geologic features in
relative age order.
Oldest:
1 ______________
2 ______________
3 ______________
4 ______________
5 ______________
Youngest:
6 ______________
2. Put the lettered features in order from oldest to youngest.
Oldest:
1 ______________
2 ______________
3 ______________
4 ______________
Youngest:
5 ______________
3. Put the following geologic features in relative age order.
Oldest:
1 ______________
2 ______________
Youngest:
3 ______________
4. Put the following geologic features in relative age order.
Oldest:
1 ______________________
2
______________________
3
______________________
4
______________________
5
______________________
6
______________________
7
______________________
8
______________________
9
______________________
Youngest: 10
erosion
5. Put the following geologic features in relative age order.
Oldest:
1 ______________________
:
Youngest:
2
______________________
3
______________________
4
______________________
5
______________________
6
______________________
7
______________________
8
______________________
9
______________________
10 ______________________
6. A layer of volcanic ash may serve as a time marker because the ash is
1 generally deposited only on land
3 deposited rapidly over a large area
2 composed of index fossils
4 often a distinct color
7. Which characteristics of a fossil would make it useful as an index fossil in determining the relative age of
widely separated rock layers?
1 a wide time range and narrow geographic range
2 a wide time range and wide geographic range
3 a narrow time range and narrow geographic range
4 a narrow time range and wide geographic range
8. A buried erosion surface always indicates that
1 a new form of life has appeared
2 a type of animal has become extinct
3 part of the geologic record has been destroyed
4 a series of lava flows have occurred
9. The diagrams below represent two outcrops of bedrock located several kilometers apart.
The rocks have not been overturned.
Which statement about the geologic history of the outcrops is best supported by the diagram?
1 The rocks at C and B are the same age.
2 The rocks at B and E are the same age.
3 The rocks at B formed after the rocks at A.
4 The rocks at B formed after the rocks at D.
10. Correlate the following outcrops to place all the layers in order from oldest to youngest.
fossil
limestone
Oldest:
1 ______________________
:
Youngest:
2
______________________
3
______________________
4
______________________
5
______________________
6
______________________
7
______________________
8
______________________
9 ______________________
The geologic columns A, B, and C in the diagrams below represent widely spaced outcrops of sedimentary rocks.
Symbols are used to indicate fossils found within each rock layer. Each rock layer represents the fossil record of
a different geologic time period.
11. According to the diagrams for all three columns, which would be the best index fossil?
12. In the geologic cross section below, between which two layers is part of the rock record most likely missing?
1
2
3
4
A and B
B and C
C and D
D and E
13. The diagram below represents an exposed rock outcrop. Which geologic event occurred last?
1
2
3
4
the intrusion of A
the fault along line B
the fold at C
the deposition of gravel at D
14. How would the age of sandstone fragments found in a conglomerate rock compare with the age of
the conglomerate rock?
1 The sandstone fragments are younger than the conglomerate rock.
2 The sandstone fragments are older than the conglomerate rock.
3 The sandstone fragments and the conglomerate rock are the same age.
4 The sandstone fragments may be younger or older than the conglomerate rock.
15. Which geologic event occurred most recently?
1 folding at A
2 the intrusion at B
3 faulting at C
4 the unconformity at D