Department of Geosciences
North Dakota State University
GEOLOGY 105
SELF-TEST SITE


NDSU

Sedimentary Rocks and Processes Self-Test (10 questions)

Special Instructions:
Using your mouse, click on the one, BEST answer. Upon completion of the exam, click the SUBMIT button, and the exam will be graded for you. You will also have the opportunity to review how well you answered each question.
1. Evaporites:
are a consequence of volcanism
include the coals
are composed of cemented fragments of pre-existing rocks
form by precipitation from a brine
ALL OF THE ABOVE ARE TRUE


2. Ms. Stick (and her mighty dog, Twig) are shown above examining cross-bedded sandstones. These sandstones were deposited:
in a still-water environment
by a current flowing from north to south
by a current flowing from south to north
by a current flowing from west to east
by a current flowing from east to west

3. Quartz is the dominant mineral in:
shale
sandstone
limestone
rock salt
gypsum

4. Which one of the following rocks will always fizz upon the application of a drop of acid?:
limestone
sandstone
shale
conglomerate
rock salt

5. Which one of the following features is NOT associated with sedimentary rocks?:
bedding
foliation
fossils
ripple marks
ALL OF THE ABOVE ARE ASSOCIATED WITH SEDIMENTARY ROCKS

6. A clastic rock is:
a rock that contains groundwater
a rock formed from the cementation of rock fragments
a rock formed from evaporation
transformed by heat and pressure into limestone
any rock that can be burned for fuel

7. Lithification is the primary process in the formation of which one of the following rocks?:
gneiss
granite
schist
marble
conglomerate

8. Shale generally refers to a rock formed from:
sand
plant remains
clay
carbonate
a brine

9. Which one of the following is a biochemical sedimentary rock?:
sandstone
coal
shale
conglomerate
rock salt

10. A quartz sandstone actively fizzes upon the application of a drop of acid. Why?
The acid has gone bad.
Quartz readily reacts with acid.
The sandstone is cemented with carbonate.
The clays are undergoing hydrolysis.
The sandstone contains groundwater.


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