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


NDSU

Metamorphic 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. Schist:
is formed from a brine
exhibits gneissic foliation
is rich in mica
exhibits cross-bedding
is formed from metamorphosed limestone


2. Ms. Stick (and her mighty dog, Twig) are shown above examining an outcrop of schist. The forces which metamorphosed these rocks:
were directed east-west
were directed north-south
acted vertically
transformed mica into clay
transformed gneiss into schist

3. Which one of the following rocks will fizz upon the application of a drop of acid?:
schist
marble
slate
gneiss
anthracite

4. Rank these coals in order of quality (lowest to highest):
bituminous - lignite - anthracite
anthracite - lignite - bituminous
lignite - anthracite - bituminous
bituminous - anthracite - lignite
lignite - bituminous - anthracite


5. Mr. Stick (above) suffers from a white eye after yelling "Gneiss!!!" to a female classmate, who happened to be sunning on a large boulder. Mr. Stick really meant to tell her that the rock she was laying on:
would fizz with the application of acid
is commonly used in billiard table construction
demonstrates schistosity
is a high-grade, silicate-rich metamorphic rock
is a low-grade, carbonate-rich metamorphic rock

6. Which one of the following will, by itself, cause a rock to deform plastically?:
heat
chemically-active fluids
pressure
lithification
cementation

7. Which one of the following is TRUE about the rock cycle?:
Igneous, sedimentary, and metamorphic rocks are all subject to metamorphism.
Igneous rocks lithify to form sediments.
Magma crystallizes to form both igneous and metamorphic rocks.
Weathering affects only sedimentary rocks.
Some igneous rocks metamorphose to form sedimentary rocks.


8. Above is a three-inch hand specimen of a coarsely-crystalline, dense rock. To it, you apply a drop of acid but get no fizz. Your first, best guess is that this rock:
is marble
is schist
is gneiss
demonstrates schistosity
was formed under low temperatures/pressures

9. Which one of the following is a common characteristic of metamorphic rocks?:
cross-bedding
bedding
fossils
index minerals
vesicles

10. Which one of the following rocks is generally MOST resistant to chemical weathering?:
anthracite
quartzite
marble
gneiss
schist


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