Section #: 23.1
The Early Paleozoic
Practice Test
1.
A __________ is a repeating sequence of sedimentary facies that record change in sea level.
a.
delta
b.
glacial till
c.
cyclothem
d.
clastic wedge
Hint
2.
The __________ of an area is its ancient geographic setting.
a.
geology
b.
paleoecology
c.
paleogeography
d.
morphology
Hint
3.
Why is the beginning of the Cambrian called the Cambrian explosion?
a.
because there were still a significant number of meteor impacts
b.
because of the intense volcanic activity
c.
because there was a significant increase in the diversity of life
d.
because there were only active margins
Hint
4.
What type of process is demonstrated in the figure?
a.
transgression
b.
regression
c.
aggression
d.
subgression
Hint
5.
What causes the type of sedimentation shown at the far right of the figure?
a.
sand-rich sediments
b.
clay-rich sediments
c.
carbonate-rich sediments
d.
gravel-rich sediments
Hint
6.
What part of Laurentia was above sea level at the end of the Proterozoic?
a.
the Taconic Range
b.
the Transcontinental Arch
c.
the passive margin
d.
the Great Divide
Hint
7.
The __________ is a famous sedimentary deposit containing fossils with hardparts and also preserved softparts from the Cambrian Period.
a.
Burgess Sandstone
b.
Burgess Shale
c.
Cambrian Shale
d.
Cyclothem
Hint
8.
A __________ occurs when sea level rises and the shoreline moves inland.
a.
passive margin
b.
orogenic event
c.
transgression
d.
regression
Hint
9.
Which vertical sequence is evidence of a transgression?
a.
limestone-basalt-shale
b.
sandstone-limestone-sandstone
c.
limestone-shale-sandstone
d.
sandstone-shale-limestone
Hint
