Name:
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Geology 12: Sedimentary Rock Review
Part A: Multiple Choice
1. What type of resource deposit is shown in the
diagram right?
a) Placer
b) Evaporite
c) Detrital
d) Biochemical
2. Which of the following is an exampel of chemical weathering?
a) Granite is sandblasted by a desert wind
b) Lomestone is dissolved by groundwater
c) Shale is scratched by rocks at the base of a glacier
d) Sand grains on a beach are rounded by wave action
3. Name the feature shown right:
a) Mud Crack
b) Ripple Marks
c) Cross Bedding
d) Graded Bedding4
4. Assuming that the top of the page is north, which compass point
below describes the direction of the water’s flow in the image?
a) North
b) East
c) South
d) West
5. Which of the following examples of weathering accelerates the rate at which the other three examples
occur?
a) Plant roots widening cracks in rock
b) Carbonic acid in rainwater dissolving rock
c) Oxygen in the atmosphere oxidizing some mienrals in rock
d) Organiz acids around plant roots attackign minerals in rock
other three examples?
Geology 12: Sedimentary Unit Review Questions
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6. The photograpjh right shows a cross section of a fossil shel made entirely of
pyrite. What type of preservation produced this fossil?
a) Replacememnt
b) Carbonization
c) Mold Formation
d) Original Preservation
7. Which of the following is mos tlikely to occur when a fast-moving, sediment-loaded river eneters a
lake?
a) A delta will form
b) A meander will form
c) The water veolocity will incraese
d) The dissolved load will deposit immediately
8. What rock would be formed if the sediment shown in the photograph right
became lithified?
a) Chert
b) Calcarenite
c) Coquina
d) Breccia
9. Which of the following gives the correct order for the complete formation
of a sedimentary rock?
1 mm
a) 5, 2, 1
b) 3, 6, 4
c) 4, 5, 2
d) 1, 3, 6
10. The photograph right shows layers of two different clastic sedimetnary rocks. Dilute acid was placed
on the rocks with no reaction. Identify both rocks.
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11. What name is given to the type of fossils shown in the photograph?
a) Xenolith
b) Trace Fossil
c) Brachiopod
d) Original Remain
12. What was the most likel ymethod of preservation for the fossil shown right?
a) Replacememnt
b) Carbonization
c) Permineralization
d) Mold and Cast
13. What name is given to the sedimentary structure shown
in the diagram right?
a) Mud cracks
b) Ripple marks
c) Cross bedding
d) Graded bedding
14. What changes in stream conditions caused the
deposition of the particles in the diagram?
a) Increase in gradient
b) Decrease in stream width
c) Decrease in stream velocity
d) Increase in water temperature
15. The sample right has small (less than 2.00mm) rounded grains of quartz.
Cement can be seen between the grains. The rock is most likely:
a) Garnet schist
b) Red sandstone
c) Black quartzite
d) Fossil limestone
Part B: Short Answer
1. The photograph right shows a rock outcrop. Explain how this
type of rock may have formed. (2 Marks)
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2. Which of the following
is the most well sorted
collection of sediments?
Explain how the type of
erosion facilitated this.
(2 Marks)
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3. For each of the features,
indicate the locations on the map where
you would find them.
4. Describe how each of the features
were formed.
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5. Why would the well in the picture not
produce any oil? (2 Marks)
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6. Name a more appropriate layer to drill into to obtain oil. Explain a reason for your choice. (2 Marks)
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Geology 12: Sedimentary Unit Review Questions
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