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Multiple Choice Quiz
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For each question below, choose the letter corresponding to the BEST answer.



1

Foliation is:
A)layering of igneous rocks.
B)an alignment of mineral grains in a metamorphic rock.
C)alignment of any kind observed in any kind of rocks.
D)layering observed in sedimentary rocks.
2

Foliated metamorphic rocks are never:
A)low grade.
B)caused by contact with magma.
C)high-grade.
D)foliated.
3

Shearing is a type of:
A)confining pressure.
B)differential stress.
C)lithostatic pressure.
D)compressive stress.
4

Metamorphic rocks with a planar texture (minerals are aligned within the rock) are:
A)concordant.
B)foliated.
C)layered.
D)striated.
5

Metamorphic rocks are classified primarily according to:
A)hardness.
B)environment of deposition.
C)chemical composition.
D)texture - the presence/absence of foliation.
6

Which of the following is a non-foliated metamorphic rock?
A)phyllite
B)quartzite
C)slate
D)gneiss
7

The major difference between metamorphism and metasomatism is:
A)metasomatism is metamorphism with the introduction of additional ions from an external source.
B)the area or region involved.
C)the minerals that are affected.
D)the temperature at which each occurs.
8

Ore bodies at divergent plate margins can be formed by:
A)hydrothermal processes.
B)regional metamorphism.
C)contact metamorphism.
D)none of these
9

Metamorphic rocks with the same mineral assemblage belong to the same:
A)metamorphic history.
B)metamorphic rock.
C)metamorphic facies.
D)all of these
10

A metamorphic rock that has undergone partial melting to produce a hybrid metamorphic-igneous rock is called:
A)schist.
B)migmatite.
C)hornfels.
D)gneiss.
11

Which of the following lists is arranged in order from highest to lowest grade of metamorphic rock?
A)slate, phyllite, schist, gneiss
B)slate, gneiss, phyllite, schist
C)gneiss, schist, phyllite, slate
D)gneiss, slate, schist, phyllite
12

Regional metamorphism is associated with:
A)all plate boundaries.
B)convergent plate boundaries.
C)transform plate boundaries.
D)divergent plate boundaries.
13

The generally accepted temperature limits for metamorphism are:
A)200 degrees Celsius to rock melting.
B)metamorphism is limited by pressure, not temperature.
C)there are no temperature limits to metamorphism because it is a continuum.
D)metamorphism occurs at all temperatures.
14

The principal agents of metamorphism are:
A)Sean Connery and Roger Moore.
B)confining pressure and directed stress.
C)heat and magma.
D)heat and pressure.
15

When rocks are metamorphosed, the mineral components of the rock are:
A)ugly first, then beautiful.
B)melted first, then crystallized again to form a new rock.
C)shattered by mechanical processes.
D)transformed in the solid state.
16

Contact metamorphism results whenever:
A)magma is in contact with other rocks.
B)lithospheric plates are in contact.
C)an earthquake occurs.
D)rocks are buried deeply beneath the crust.
17

Regional metamorphism:
A)is occurring as you read this question.
B)produces foliated metamorphic rocks.
C)produces metamorphic rocks over large areas.
D)all of these
18

Slate is a metamorphic rock type associated with:
A)high pressure, high temperature conditions.
B)low pressure, low temperature conditions.
C)low pressure, high temperature conditions.
D)low temperature, high pressure conditions.
19

Gneiss is a metamorphic rock associated with:
A)low temperature, high pressure conditions.
B)low temperature, low pressure conditions.
C)high temperature, low pressure conditions.
D)high temperature, high pressuer conditions.
20

Metamorphism of limestone may contribute to global warming by the release of:
A)nitrous oxide.
B)carbon dioxide.
C)sulfuric acid.
D)oxygen.







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