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WorksheetsCorrelation Practice
Total questions: 18
Worksheet time: 54mins
Which statement best supports the inference that most of Earth's present-day land surfaces have, at one time, been covered by water?
Volcanic eruptions contain large amounts of water vapor
Coral reefs formed, in the past, along the edges of many continents
Seafloor spreading has pulled landmasses apart and pushed them together.
Sedimentary bedrock of marine origin covers large areas of Earth's continents.
Volcanic ash can be used as a time marker to correlate rock layers because the ash
is deposited rapidly over a large area
represents a buried erosional surface
forms intrusive igneous rock
cuts across rock layers
During the late Silurian epoch, very salty seas extended from New York State to Michigan. These environmental conditions resulted in the formation of halite layers. At the same time, Eurypterus remipes lived in nearby environments. Both the halite layers and Eurypterus remipes fossils can now be used to identify a specific geologic time interval because both formed over a
large geographic area and in a short geologic time
large geographic area and in a long geologic time
small geographic area and in a short geologic time
small geographic area and in a long geologic time
What lettered rock layer is the youngest?
A
B
C
D
Volcanic ash deposits such as these are usually excellent geologic time markers because they
occur at regular time intervals
spread over a large area in a short amount of time
represent a time gap in the rock record
contain index fossils from different time periods
When the rock layers in the three outcrops are correlated, the oldest layer is the
shale layer in outcrop I
siltstone layer in outcrop II
limestone layer in outcrop III
conglomerate layer in outcrop III
Which fossil could be classified as an index fossil?
Which fossil could best be used as an index fossil?
W
X
Y
Z
Organisms that later became good index fossils lived over a
wide geographic area and existed for a long geologic time
wide geographic area and existed for a short geologic time
limited geographic area and existed for a long geologic time
limited geographic area and existed for a short geologic time
Thin layers of volcanic ash act as excellent time markers in the correlation of bedrock because volcanic ash
is easily eroded and lasts only a short time on Earth's surface
stays in the atmosphere for millions of years
is deposited over millions of years
falls to Earth over a large area in a short period of time
Rock layer X at location B is most likely the same relative as which rock layer at location A?
1
2
3
4
When the rock layers at outcrops A, B, C, and D are correlated, which rock layer would be determined to be the oldest?
quartzite
marble
gneiss
sandstone
Evidence best indicates that rock layers 4 and 8 were deposited during the same geologic period because both layers
contain the same index fossil
are composed of glacial sediments
contain index fossils of the same age
are found in the same area
Which fossil appears to have the best characteristics of an index fossil?
A
B
C
D
