Question 1

___ is a fine-grained metamorphic rock whose parent rock was basalt.

Accepted Answer

A) Mica schist 
B) Phyllite 
C) Hornfels 
D) Garnet schist 
E) Gneiss 
A) Mica schist 
B) Phyllite 
C) Hornfels 
D) Garnet schist 
E) Gneiss C

Question 2

The zone of contact metamorphism (the aureole),____.

Accepted Answer

A) extends throughout the surrounding region because rock is such a good conductor of heat 
B) is commonly broad,as much as several kilometers wide 
C) is commonly rather narrow,from 1 to 100 meters wide 
D) is a thin zone,less than 1 meter wide 
E) is a very thin zone,no more than a few centimeters in width 
A) extends throughout the surrounding region because rock is such a good conductor of heat 
B) is commonly broad,as much as several kilometers wide 
C) is commonly rather narrow,from 1 to 100 meters wide 
D) is a thin zone,less than 1 meter wide 
E) is a very thin zone,no more than a few centimeters in width C

Question 3

A mineral is said to be ____,if after a long time it does not convert to a new mineral.

Accepted Answer

A) fixed 
B) stable 
C) invariable 
D) crystalline 
E) constant 
A) fixed 
B) stable 
C) invariable 
D) crystalline 
E) constant B

Question 4

The differential stress responsible for foliation can take place at _____.

Accepted Answer

A) the Gutenberg discontinuity 
B) hydrothermal locations 
C) static plate boundaries 
D) ocean-ocean convergent boundaries 
E) the continental crust-ocean crust transition zone 
A) the Gutenberg discontinuity 
B) hydrothermal locations 
C) static plate boundaries 
D) ocean-ocean convergent boundaries 
E) the continental crust-ocean crust transition zone

Question 5

Shock metamorphism can occur as a result of ______.

Accepted Answer

A) volcanic eruptions 
B) meteor impacts 
C) tsunami 
D) earthquakes 
E) tornadoes 
A) volcanic eruptions 
B) meteor impacts 
C) tsunami 
D) earthquakes 
E) tornadoes

Question 6

Gneissic texture has the minerals separated into distinct (light and dark)layers,or lenses.

Accepted Answer

A) True 
 B)False

Question 7

_______ forms when a limestone recrystallizes during metamorphism.

Accepted Answer

A) Marble 
B) Gneiss 
C) Phyllite 
D) Quartzite 
E) Coal 
A) Marble 
B) Gneiss 
C) Phyllite 
D) Quartzite 
E) Coal

Question 8

Metamorphism may involve all of the following except __.

Accepted Answer

A) formation of new minerals 
B) changes in rock texture: grain size,grain shape,foliation,et cetera 
C) metasomatism 
D) complete melting of the rock 
E) recrystallization 
A) formation of new minerals 
B) changes in rock texture: grain size,grain shape,foliation,et cetera 
C) metasomatism 
D) complete melting of the rock 
E) recrystallization

Question 9

___ tends to deform objects into oblong or flattened forms.

Accepted Answer

A) Differential stress 
B) Strain 
C) Temperature 
D) Pressure 
E) Magnetism 
A) Differential stress 
B) Strain 
C) Temperature 
D) Pressure 
E) Magnetism

Question 10

The light-color layers within a typical gneiss are formed by __.

Accepted Answer

A) amphiboles 
B) feldspars 
C) pyroxenes 
D) olivine 
E) calcite 
A) amphiboles 
B) feldspars 
C) pyroxenes 
D) olivine 
E) calcite

Question 11

_______ is a very fine-grained metamorphic rock that splits easily along parallel planes.

Accepted Answer

A) Slate 
B) Sandstone 
C) Marble 
D) Arkose 
E) Gneiss 
A) Slate 
B) Sandstone 
C) Marble 
D) Arkose 
E) Gneiss

Question 12

Andalusite,kyanite,and sillimanite are among the best known index minerals that provide information about the temperature and pressure of metamorphism.

Accepted Answer

A) True 
 B)False

Question 13

A metamorphic rock is similar both in mineralogy and texture to its parent rock.

Accepted Answer

A) True 
 B)False

Question 14

_____ are important economic resources for lead,zinc,gold,silver,tungsten,tin,and mercury.

Accepted Answer

A) Meteor impact sites 
B) Hydrothermal veins 
C) Marble 
D) Schists 
E) Quartzites 
A) Meteor impact sites 
B) Hydrothermal veins 
C) Marble 
D) Schists 
E) Quartzites

Question 15

The most important factor in controlling the final metamorphic product is __.

Accepted Answer

A) temperature 
B) pressure/stress 
C) the composition of the pre-existing rock 
D) the effect of fluids such as water 
E) shock 
A) temperature 
B) pressure/stress 
C) the composition of the pre-existing rock 
D) the effect of fluids such as water 
E) shock

Question 16

In some instances a single mineral,a ____,suffices for determination of the pressure and temperature under which a metamorphic rock formed.

Accepted Answer

A) metamorphic index mineral 
B) metamorphic key mineral 
C) metamorphic trace mineral 
D) metamorphic mica mineral 
E) metamorphic pressure-temperature mineral 
A) metamorphic index mineral 
B) metamorphic key mineral 
C) metamorphic trace mineral 
D) metamorphic mica mineral 
E) metamorphic pressure-temperature mineral

Question 17

__________ forces the constituents of a rock to become parallel to one another.

Accepted Answer

A) Pressure 
B) Differential stress 
C) Strain 
D) Heat from a nearby pluton 
E) Starch 
A) Pressure 
B) Differential stress 
C) Strain 
D) Heat from a nearby pluton 
E) Starch

Question 18

____ is the lowest-grade rock in progressive metamorphism.

Accepted Answer

A) Schist 
B) Gneiss 
C) Marble 
D) Slate 
E) Phyllite 
A) Schist 
B) Gneiss 
C) Marble 
D) Slate 
E) Phyllite

Question 19

Metamorphism includes melting.

Accepted Answer

A) True 
 B)False

Question 20

Differential stress forces constituents of the rock to become parallel to one another.

Accepted Answer

A) True 
 B)False

Exam 15: Metamorphism, Metamorphic Rocks, and Hydrothermal Rocks

___ is a fine-grained metamorphic rock whose parent rock was basalt.

The zone of contact metamorphism (the aureole),____.

A mineral is said to be ____,if after a long time it does not convert to a new mineral.

The differential stress responsible for foliation can take place at _____.

Shock metamorphism can occur as a result of ______.

Gneissic texture has the minerals separated into distinct (light and dark)layers,or lenses.

_______ forms when a limestone recrystallizes during metamorphism.

Metamorphism may involve all of the following except __.

___ tends to deform objects into oblong or flattened forms.

The light-color layers within a typical gneiss are formed by __.

_______ is a very fine-grained metamorphic rock that splits easily along parallel planes.

Andalusite,kyanite,and sillimanite are among the best known index minerals that provide information about the temperature and pressure of metamorphism.

A metamorphic rock is similar both in mineralogy and texture to its parent rock.

_____ are important economic resources for lead,zinc,gold,silver,tungsten,tin,and mercury.

The most important factor in controlling the final metamorphic product is __.

In some instances a single mineral,a ____,suffices for determination of the pressure and temperature under which a metamorphic rock formed.

__________ forces the constituents of a rock to become parallel to one another.

____ is the lowest-grade rock in progressive metamorphism.

Metamorphism includes melting.

Differential stress forces constituents of the rock to become parallel to one another.

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