Question 1

Regional metamorphism ____.

Accepted Answer

A) is confined only to convergent margins 
B) occurs over a large area 
C) occurs in shallow areas of Earth's crust 
D) is difficult to see along convergent plate boundaries 
E) usually has no gradation in metamorphic intensity from one area to another 
A) is confined only to convergent margins 
B) occurs over a large area 
C) occurs in shallow areas of Earth's crust 
D) is difficult to see along convergent plate boundaries 
E) usually has no gradation in metamorphic intensity from one area to another B

Question 2

Minerals in a metamorphic rock that are arranged in an elongated parallel manner indicate that the rock was exposed to ____.

Accepted Answer

A) water seeping through the rock in one direction 
B) the north\south magnetic poles 
C) the greater force of gravity closer to Earth's center 
D) pressure applied to two sides 
E) pressure applied equally to all sides 
A) water seeping through the rock in one direction 
B) the north\south magnetic poles 
C) the greater force of gravity closer to Earth's center 
D) pressure applied to two sides 
E) pressure applied equally to all sides D

Question 3

What are the three (3)types of metamorphism? Where and under what conditions does each occur?

Accepted Answer

Contact metamorphism takes place when a body of magma alters the surrounding country rock. At shallow depths, intruding magma raises the temperature of the surrounding rock, causing thermal alteration. Furthermore, the release of hot fluids into the country rock by the cooling intrusion can aid in the formation of new minerals. Dynamic metamorphism is associated with faults or fault zones, where rocks are subjected to high levels of differential pressure. The metamorphic rocks that result from pure dynamic metamorphism are typically restricted to narrow zones adjacent to faults. Regional metamorphism is responsible for the formation of most metamorphic rocks. It occurs over a large area and is usually caused by tremendous temperatures, pressures, and deformations all occurring together within the deeper portions of the crust. Regional metamorphism is most obvious along convergent plate boundaries where rocks are intensely deformed and recrystallized during convergence and subduction.

Question 4

A group of metamorphic rocks that formed under broadly similar temperature and pressure conditions is a(n)____.

Accepted Answer

A) metamorphic zone 
B) isograd 
C) metamorphic facies 
D) contact zone 
E) profile 
A) metamorphic zone 
B) isograd 
C) metamorphic facies 
D) contact zone 
E) profile

Question 5

Reaction of country rock with solutions from a cooling magma is known as ____ alteration.

Accepted Answer

A) geostatic 
B) geohydrous 
C) geothermal 
D) hydrothermal 
E) hydrostatic 
A) geostatic 
B) geohydrous 
C) geothermal 
D) hydrothermal 
E) hydrostatic

Question 6

Various colors of slate result from differing intensities of deformation.

Accepted Answer

A) True 
 B)False

Question 7

____________________ is a general term applied to any silicate mineral that easily separates into flexible fibers.

Accepted Answer

The answer of ____________________ is a general term applied to...

Question 8

Explain the significance of metamorphism taking place below the melting temperature of a rock.

Accepted Answer

By definition, a metamorphic rock can no

Question 9

Why is time important in metamorphism?

Accepted Answer

Chemical reactions proceed at different

Question 10

Metamorphism takes place ____.

Accepted Answer

A) as country rock is melted by contact with magma 
B) while rocks remain solid 
C) without high temperatures as long as rocks are buried at great depth 
D) without high pressure, as long as high temperatures are present 
E) only with fluid activity 
A) as country rock is melted by contact with magma 
B) while rocks remain solid 
C) without high temperatures as long as rocks are buried at great depth 
D) without high pressure, as long as high temperatures are present 
E) only with fluid activity

Question 11

Although metamorphism is associated with all three types of plate boundaries, it is ____.

Accepted Answer

A) most common along convergent plate margins 
B) rare along convergent plate margins 
C) most common along divergent plate margins 
D) difficult to identify metamorphic rock that forms along divergent plate margins 
E) coincidental that this association occurs 
A) most common along convergent plate margins 
B) rare along convergent plate margins 
C) most common along divergent plate margins 
D) difficult to identify metamorphic rock that forms along divergent plate margins 
E) coincidental that this association occurs

Question 12

The three (3)principal agents of metamorphism are heat, ____________________, and ____________________.

Accepted Answer

pressure,

Question 13

Slate is a very fine-grained foliated metamorphic rock that commonly exhibits cleavage.

Accepted Answer

A) True 
 B)False

Question 14

The region between two adjacent isograds ____.

Accepted Answer

A) does not vary in width within a given metamorphic formation 
B) is always nonfoliated rock 
C) is composed of non-metamorphosed rock 
D) makes up a single metamorphic zone 
E) is where rock types change 
A) does not vary in width within a given metamorphic formation 
B) is always nonfoliated rock 
C) is composed of non-metamorphosed rock 
D) makes up a single metamorphic zone 
E) is where rock types change

Question 15

Marble is ____.

Accepted Answer

A) an extremely hard rock 
B) the result of dynamic metamorphism 
C) metamorphosed limestone or dolostone 
D) rarely used for building 
E) metamorphosed quartz 
A) an extremely hard rock 
B) the result of dynamic metamorphism 
C) metamorphosed limestone or dolostone 
D) rarely used for building 
E) metamorphosed quartz

Question 16

Blueschist facies indicate ____.

Accepted Answer

A) formation at high temperature and pressure 
B) evidence of an ancient subduction zone 
C) migmatite melting in a subduction zone 
D) gneiss formation nearby 
E) rock that is a very good heat conductor 
A) formation at high temperature and pressure 
B) evidence of an ancient subduction zone 
C) migmatite melting in a subduction zone 
D) gneiss formation nearby 
E) rock that is a very good heat conductor

Question 17

The degree of metamorphic change within an aureole ____.

Accepted Answer

A) is always sharp and well-defined 
B) is not dependent on the temperature of the intruding magma 
C) is defined by an isograd 
D) increases with distance from the intrusion 
E) decreases with distance from the intrusion 
A) is always sharp and well-defined 
B) is not dependent on the temperature of the intruding magma 
C) is defined by an isograd 
D) increases with distance from the intrusion 
E) decreases with distance from the intrusion

Question 18

Shields are ____.

Accepted Answer

A) composed of igneous, sedimentary, and metamorphic rocks 
B) composed of sedimentary and metamorphic rocks 
C) composed of limestone and quartz 
D) regions of the continents where basement rocks are widely exposed 
E) regions of the continents where basement rocks are deeply buried 
A) composed of igneous, sedimentary, and metamorphic rocks 
B) composed of sedimentary and metamorphic rocks 
C) composed of limestone and quartz 
D) regions of the continents where basement rocks are widely exposed 
E) regions of the continents where basement rocks are deeply buried

Question 19

Migmatite ____.

Accepted Answer

A) is produced during the lower temperature range of metamorphism 
B) is a nonfoliated rock 
C) never occurs due to regional metamorphism 
D) always shows rotational metamorphism 
E) has both igneous and metamorphic characteristics 
A) is produced during the lower temperature range of metamorphism 
B) is a nonfoliated rock 
C) never occurs due to regional metamorphism 
D) always shows rotational metamorphism 
E) has both igneous and metamorphic characteristics

Question 20

Contact metamorphism along sills and dikes may produce metamorphosed zones many kilometers wide.

Accepted Answer

A) True 
 B)False

Exam 8: Metamorphism and Metamorphic Rocks

Regional metamorphism ____.

Minerals in a metamorphic rock that are arranged in an elongated parallel manner indicate that the rock was exposed to ____.

What are the three (3)types of metamorphism? Where and under what conditions does each occur?

A group of metamorphic rocks that formed under broadly similar temperature and pressure conditions is a(n)____.

Reaction of country rock with solutions from a cooling magma is known as ____ alteration.

Various colors of slate result from differing intensities of deformation.

____________________ is a general term applied to any silicate mineral that easily separates into flexible fibers.

Explain the significance of metamorphism taking place below the melting temperature of a rock.

Why is time important in metamorphism?

Metamorphism takes place ____.

Although metamorphism is associated with all three types of plate boundaries, it is ____.

The three (3)principal agents of metamorphism are heat, ____________________, and ____________________.

Slate is a very fine-grained foliated metamorphic rock that commonly exhibits cleavage.

The region between two adjacent isograds ____.

Marble is ____.

Blueschist facies indicate ____.

The degree of metamorphic change within an aureole ____.

Shields are ____.

Migmatite ____.

Contact metamorphism along sills and dikes may produce metamorphosed zones many kilometers wide.

Understanding Earth: a Dynamic and Evolving Planet

Plate Tectonics: a Unifying Theory

Minerals: The Building Blocks of Rocks

Igneous Rocks and Plutons

Volcanoes and Volcanism

Weathering, Erosion, and Soil

Sediment and Sedimentary Rocks

Earthquakes and Earthapos;s Interior

Deformation, Mountain Building, and Earthapos;s Crust

Mass Wasting

Running Water--Streams and Rivers

Groundwater

Glaciers and Glaciation

The Work of Wind and Deserts

Oceans, Shorelines, and Shoreline Processes

Geologic Time: Concepts and Principles

Organic Evolution--The Theory and Its Supporting Evidence

Precambrian Earth and Life History

Paleozoic Earth History

Paleozoic Life History

Mesozoic Earth and Life History

Cenozoic Earth and Life History

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