Question 1

Shearing causes parts of a body to move or slide relative to one another across a plane.

Accepted Answer

A) True 
 B)False

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

Question 3

In high temperature and pressure metamorphism, if the parent rock is _____ and the dominant mineral is amphibole then the rock is amphibolite.

Accepted Answer

A)  granite 
B)  basalt 
C)  ocean-floor sediment 
D)  lake sediment 
E)  limestone 
A)  granite 
B)  basalt 
C)  ocean-floor sediment 
D)  lake sediment 
E)  limestone

Question 4

A migmatite forms when a rock partially melts.

Accepted Answer

A) True 
 B)False

Question 5

Meteor craters show an unusual type of metamorphism called shock metamorphism.

Accepted Answer

A) True 
 B)False

Question 6

___ metamorphism takes place at considerable depth underground (generally greater than 5 km).

Accepted Answer

A)  Contact 
B)  Regional 
C)  Burial 
D)  Hydrothermal 
E)  Shock 
A)  Contact 
B)  Regional 
C)  Burial 
D)  Hydrothermal 
E)  Shock

Question 7

Schist forms at higher temperatures and pressure than slate.

Accepted Answer

A) True 
 B)False

Question 8

When hot solutions emerge from the ocean floor, submarine hot springs called ________ form.

Accepted Answer

A)  ophiolites 
B)  geysers 
C)  hydrothermal vents 
D)  mud pots 
E)  fountains 
A)  ophiolites 
B)  geysers 
C)  hydrothermal vents 
D)  mud pots 
E)  fountains

Question 9

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 10

When hot metal-rich solutions contact cold seawater at submarine spreading ridges, _______ are precipitated.

Accepted Answer

A)  carbonate 
B)  ore minerals 
C)  oils 
D)  basalts 
E)  silicates 
A)  carbonate 
B)  ore minerals 
C)  oils 
D)  basalts 
E)  silicates

Question 11

Metamorphic rocks are prevalent __.

Accepted Answer

A)  in continental crust in the middle of a plate, far away from any mountains or active faults 
B)  within volcanoes 
C)  in the oceanic crust away from the mid-ocean ridge 
D)  in intensely deformed portions of large mountain ranges, where the continental crust is subjected to high temperatures, pressures, and tectonic stress 
E)  nowhere on Earth, because regional metamorphism only occurred back when the mountains were forming 
A)  in continental crust in the middle of a plate, far away from any mountains or active faults 
B)  within volcanoes 
C)  in the oceanic crust away from the mid-ocean ridge 
D)  in intensely deformed portions of large mountain ranges, where the continental crust is subjected to high temperatures, pressures, and tectonic stress 
E)  nowhere on Earth, because regional metamorphism only occurred back when the mountains were forming

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

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 14

Lines connecting points of equal temperature on maps or cross sections are called __.

Accepted Answer

A)  thermochrons 
B)  isochrons 
C)  isohyetal curves 
D)  isopleths 
E)  isotherms 
A)  thermochrons 
B)  isochrons 
C)  isohyetal curves 
D)  isopleths 
E)  isotherms

Question 15

The most important factors controlling the characters of metamorphic rocks include ___.

Accepted Answer

A)  composition of the parent rock 
B)  temperature 
C)  pressure 
D)  water 
E)  All of the choices are correct. 
A)  composition of the parent rock 
B)  temperature 
C)  pressure 
D)  water 
E)  All of the choices are correct.

Question 16

_______ 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 17

___ metamorphism is the term used for the process in which rocks are altered by hot water.

Accepted Answer

A)  Aqueous 
B)  Tectonic 
C)  Burial 
D)  Hydrothermal 
E)  Shock 
A)  Aqueous 
B)  Tectonic 
C)  Burial 
D)  Hydrothermal 
E)  Shock

Question 18

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 19

___ is pressure applied equally to all surfaces of a substance as a result of burial or submergence.

Accepted Answer

A)  Differential stress 
B)  Strain 
C)  Temperature 
D)  Confining pressure 
E)  Magnetism 
A)  Differential stress 
B)  Strain 
C)  Temperature 
D)  Confining pressure 
E)  Magnetism

Question 20

The major ____ classification of metamorphic rocks divides them into foliated and non-foliated groups.

Accepted Answer

A)  mineral 
B)  genetic 
C)  crystal size 
D)  fabric 
E)  textural 
A)  mineral 
B)  genetic 
C)  crystal size 
D)  fabric 
E)  textural

Exam 7: Metamorphism, Metamorphic Rocks, and Hydrothermal Rocks

Shearing causes parts of a body to move or slide relative to one another across a plane.

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

In high temperature and pressure metamorphism, if the parent rock is _____ and the dominant mineral is amphibole then the rock is amphibolite.

A migmatite forms when a rock partially melts.

Meteor craters show an unusual type of metamorphism called shock metamorphism.

___ metamorphism takes place at considerable depth underground (generally greater than 5 km).

Schist forms at higher temperatures and pressure than slate.

When hot solutions emerge from the ocean floor, submarine hot springs called ________ form.

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

When hot metal-rich solutions contact cold seawater at submarine spreading ridges, _______ are precipitated.

Metamorphic rocks are prevalent __.

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

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

Lines connecting points of equal temperature on maps or cross sections are called __.

The most important factors controlling the characters of metamorphic rocks include ___.

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

___ metamorphism is the term used for the process in which rocks are altered by hot water.

Shock metamorphism can occur as a result of ______.

___ is pressure applied equally to all surfaces of a substance as a result of burial or submergence.

The major ____ classification of metamorphic rocks divides them into foliated and non-foliated groups.

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