Question 1

A preferred orientation of large,flaky mica crystals within metamorphic rock is termed

Accepted Answer

A)   slaty cleavage.
B)   phyllitic luster.
C)   schistosity.
D)   compositional banding.E) A) and B)
F) C) and D)

Question 2

The transformation of low-grade metamorphic rocks into high-grade metamorphic rocks is termed ________ metamorphism.

Accepted Answer

A)   foliated
B)   prograde
C)   retrograde
D)   dynamicE) A) and C)
F) None of the above

Question 3

Broadly,metamorphism involves

Accepted Answer

A)   the settling of crystals in a melt as it cools.
B)   the sorting of grains by size,as accomplished by rivers and beach waves.
C)   the cementation of loose grains and the precipitation of new minerals into pore spaces.
D)   changes in mineralogy and texture in response to heat and stress.E) B) and C)
F) B) and D)

Question 4

Describe the similarities and differences between schist and phyllite.

Accepted Answer

Schist and phyllite are both foliated me...

Question 5

What metamorphic facies would most commonly be associated with a subduction zone and why?

Accepted Answer

In subduction zones,temperatures remain ...

Question 6

Which of the following describes the progression of rock types through increasing metamorphic grade from left to right?

Accepted Answer

A)   shale  →\rightarrow→  slate  →\rightarrow→  phyllite  →\rightarrow→  schist
B)   basalt  →\rightarrow→  andesite  →\rightarrow→  rhyolite  →\rightarrow→  granite
C)   sandstone  →\rightarrow→  gneiss  →\rightarrow→  hornfels  →\rightarrow→  zeolite
D)   migmatite →\rightarrow→  slate  →\rightarrow→ eclogite →\rightarrow→  schist E) None of the above
F) B) and C)

Question 7

Which list properly orders foliated metamorphic rocks from lowest to highest grade from left to right?

Accepted Answer

A)   conglomerate,sandstone,siltstone,and shale
B)   shale,slate,phyllite,and quartzite
C)   slate,phyllite,schist,and gneiss
D)   gneiss,phyllite,schist,and slateE) A) and B)
F) C) and D)

Question 8

Regional metamorphism

Accepted Answer

A)   takes place at low temperatures and low pressure.
B)   takes place at low temperatures but high pressure.
C)   is another name for thermal metamorphism.
D)   is another name for dynamothermal metamorphism.E) None of the above
F) B) and C)

Question 9

Which of the following is NOT part of the process that leads to the exhumation of metamorphic rocks?

Accepted Answer

A)   continents squeezing together
B)   mountain belts collapsing
C)   erosion
D)   rising plumes of magma in the mantleE) All of the above
F) B) and C)

Question 10

What type of protolith would yield an amphibolite? What minerals are in the protolith and which ones form in the amphibolite?

Accepted Answer

Metamorphism of mafic rocks,such as basa...

Question 11

Which of the following processes does NOT occur in the formation of metamorphic rock?

Accepted Answer

A)   the realignment of minerals so that they develop a preferred orientation
B)   the segregation of minerals into layers of different compositions
C)   the solid-state rearrangement of atoms or ions to create a new assemblage of minerals
D)   complete remelting of the rock,followed by solidification to form a new rockE) A) and D)
F) None of the above

Question 12

________ commonly serves as a protolith in the formation of slate.

Accepted Answer

A)   Limestone
B)   Sandstone
C)   Shale
D)   BasaltE) A) and B)
F) A) and C)

Question 13

What is a metamorphic aureole? What is the relationship between grade of metamorphism and proximity to the intrusion? What types of conditions are responsible for the formation of an aureole?

Accepted Answer

A metamorphic aureole is a zone of alter...

Question 14

Rocks resulting from thermal (contact) metamorphism will NOT possess

Accepted Answer

A)   a new mineral assemblage distinct from that found prior to intrusion.
B)   larger crystals than those characterizing the country rock prior to intrusion.
C)   foliation.
D)   silicate minerals.E) None of the above
F) All of the above

Question 15

A body of gneiss is subjected to heat and forms a melt.Later,the melt cools and crystallizes to form a (n) ________ rock.

Accepted Answer

A)   metamorphic
B)   igneous
C)   sedimentary
D)   metaigneousE) A) and D)
F) A) and C)

Question 16

________ commonly serves as a protolith in the formation of phyllite.

Accepted Answer

A)   Limestone
B)   Sandstone
C)   Shale
D)   BasaltE) All of the above
F) A) and B)

Question 17

Spreading peanut butter on bread is an application of

Accepted Answer

A)   normal stress.
B)   pressure.
C)   shear stress.
D)   metasomatism.E) All of the above
F) A) and B)

Question 18

Foliated metamorphic rocks possess

Accepted Answer

A)   leafy plant fossils (ancient foliage) .
B)   a homogeneous texture resulting from randomly oriented grains.
C)   mineral grains in preferred orientations or patterns of association.
D)   minerals precipitated directly from seawater.E) None of the above
F) All of the above

Question 19

What is an index mineral? What do metamorphic isograds indicate? What is a metamorphic zone?

Accepted Answer

An index mineral is a mineral that forms...

Question 20

Draw the orientation of the preferential stress that created the foliation in the figure below.

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> See image above.Arr...

Exam 8: Metamorphism: a Process of Change

A body of gneiss is subjected to heat and forms a melt.Later,the melt cools and crystallizes to form a (n) ________ rock.

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The transformation of low-grade metamorphic rocks into high-grade metamorphic rocks is termed ________ metamorphism.

Correct AnswerverifiedShow Answer

What is a metamorphic aureole? What is the relationship between grade of metamorphism and proximity to the intrusion? What types of conditions are responsible for the formation of an aureole?

Correct AnswerverifiedA metamorphic aureole is a zone of alter...View AnswerShow Answer

Which list properly orders foliated metamorphic rocks from lowest to highest grade from left to right?

Correct AnswerverifiedShow Answer

Spreading peanut butter on bread is an application of

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Describe the similarities and differences between schist and phyllite.

Correct AnswerverifiedSchist and phyllite are both foliated me...View AnswerShow Answer

Broadly,metamorphism involves

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What type of protolith would yield an amphibolite? What minerals are in the protolith and which ones form in the amphibolite?

Correct AnswerverifiedMetamorphism of mafic rocks,such as basa...View AnswerShow Answer

Regional metamorphism

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Rocks resulting from thermal (contact) metamorphism will NOT possess

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What metamorphic facies would most commonly be associated with a subduction zone and why?

Correct AnswerverifiedIn subduction zones,temperatures remain ...View AnswerShow Answer

What is an index mineral? What do metamorphic isograds indicate? What is a metamorphic zone?

Correct AnswerverifiedAn index mineral is a mineral that forms...View AnswerShow Answer

Which of the following processes does NOT occur in the formation of metamorphic rock?

Correct AnswerverifiedShow Answer

Draw the orientation of the preferential stress that created the foliation in the figure below.

Correct Answerverified See image above.Arr...View AnswerShow Answer

Which of the following describes the progression of rock types through increasing metamorphic grade from left to right?

Correct AnswerverifiedShow Answer

A preferred orientation of large,flaky mica crystals within metamorphic rock is termed

Correct AnswerverifiedShow Answer

________ commonly serves as a protolith in the formation of slate.

Correct AnswerverifiedShow Answer

Which of the following is NOT part of the process that leads to the exhumation of metamorphic rocks?

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Foliated metamorphic rocks possess

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________ commonly serves as a protolith in the formation of phyllite.

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Correct Answer
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A metamorphic aureole is a zone of alter...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Schist and phyllite are both foliated me...
View Answer

Correct Answer
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Correct Answer
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Metamorphism of mafic rocks,such as basa...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
In subduction zones,temperatures remain ...
View Answer

Correct Answer
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An index mineral is a mineral that forms...
View Answer

Correct Answer
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Correct Answer
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See image above.Arr...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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