Download Please read CHAPTER 6–Metamorphic Rocks MULTIPLE CHOICE

Please read CHAPTER 6–Metamorphic Rocks
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Metamorphism
A) occurs during the deep burial of rock bodies.
B) occurs around igneous intrusion.
C) develops from strong directed horizontal stresses.
D) commonly produces foliation that is not parallel with the original bedding of the rock being metamorphosed.
E) all of the above
Answer: E
2) Which of the following can cause metamorphism?
A) chemical action of fluids
B) increases in pressure
C) increases in temperature
D) all of the above
Answer: D
3) Metamorphism occurs
A) in association with mountain belts.
B) in association with igneous activity.
C) at great depth.
D) at convergent plate boundaries.
E) all of the above
Answer: E
4) Metamorphic transformations occur while a rock is in
A) the molten state.
B) the clastic state.
C) the solid state.
D) all of the above
E) none of the above
Answer: C
5) Most metamorphic rocks exposed at the surface are believed to have been formed
A) in the stable platforms from deep burial.
B) in the oceanic ridge systems.
C) in the roots of developing mountain systems in ancient times.
D) from heat and pressure along the margins of igneous intrusions.
E) in plateaus as a result of deep burial.
Answer: C
6) Contact metamorphism is best developed
A) next to lava flows.
B) next to large bodies of intrusive igneous rocks.
C) next to small bodies of extrusive igneous rocks.
D) in tuff.
E) in veins.
Answer: B
7) Metamorphic rocks are formed
A) in the Earth's core.
B) under conditions of high temperature and pressure.
C) from molten rock.
D) by consolidation of weathered products of preexisting rocks.
E) all of the above
Answer: B
8) Metasomatism is involved in all of the following EXCEPT
A) shear to create fine-grained mylonite.
B) deposition of some metallic ores.
C) addition of water to originally drier rocks.
D) mineral reactions with hot fluids moving through pores and fractures.
E) seafloor metamorphism.
Answer: A
9) Marble commonly forms from metamorphism of
A) basalt.
B) shale.
C) sandstone.
D) limestone.
E) all of the above
Answer: D
10) Which of the following metamorphic rocks is NOT foliated?
A) gneiss
B) schist
C) slate
D) marble
E) phyllite
Answer: D
11) Which of the following metamorphic rocks represents the highest intensity of metamorphism?
A) slate
B) quartzite
C) schist
D) gneiss
E) marble
Answer: D
12) Which of the following rocks is formed by the metamorphism of sandstone?
A) slate
B) amphibolite
C) gneiss
D) marble
E) quartzite
Answer: E
13) A foliated metamorphic rock with alternating layers of light and dark minerals is called a
A) marble.
B) schist.
C) quartzite.
D) gneiss.
E) slate.
Answer: D
14) Which of the following is NOT a type of metamorphic rock?
A) slate
B) gneiss
C) shale
D) schist
E) quartzite
Answer: C
15) The texture exhibited by slate, schist, and gneiss is called
A) fracture.
B) stratification.Ccleavage.
C) foliation.
D) alignment.
Answer: C
16) Regional metamorphism would be best developed
A) above and below a sill.
B) in a fault zone.
C) below a lava flow.
D) in buried sediment on the stable platform.
E) deep in a folded mountain belt.
Answer: E
17) Which of the following pairs of parent rock and its metamorphosed equivalent is NOT correctly matched?
A) sandstone - quartzite
B) shale - slate
C) limestone - schist
D) granite – gneiss or granite
E) conglomerate - metaconglomerate
Answer: C
18) Which of the following is NOT TRUE about the process of hydrothermal alteration
A) it is common around igneous intrusions.
B) during this process chemical reactions occur between a hot fluid and preexisting country rock.
C) many types of metallic ore deposits are formed by this process.
D) it rarely changes the composition of the preexisting country rock.
E) it is a type of metamorphic reaction.
Answer: D
19) The texture shown in this hand sample (and accompanying microscope view) shows that this rock is probably
what type of rock?
A) an igneous rock
B) a clastic sedimentary rock
C) a chemical precipitate (sedimentary) rock
D) a metamorphic rock
Answer: D