Question 1

_________forms from the metamorphism of limestone or dolostone.

Accepted Answer

A)  Migmatite
B)  Quartzite
C)  Amphibolite
D)  Marble

Question 2

What metamorphic rock forms by intense ductile deformation along fault zones at depth in the Earth?

Accepted Answer

The answer of What metamorphic rock forms by intense ductile...

Question 3

Graphite is identified in a particular schist. Which one of the following conclusions is justified?

Accepted Answer

A)  The schist formed from a quartz- rich, sedimentary limestone.
B)  The rock also contains diamonds; both are crystalline forms of the element carbon.
C)  The graphite lubricated shearing movements along a fault, causing a schist to form.
D)  The pre- metamorphic rock was a shale or mudstone containing organic matter.

Question 4

Which low- grade metamorphic rock, composed of extremely fine- sized mica and other mineral grains, typically exhibits well- developed rock cleavage?

Accepted Answer

A)  hornfels
B)  slate
C)  schist
D)  quartzite B

Question 5

What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks?

Accepted Answer

A)  feldspars
B)  quartz
C)  carbonates
D)  micas

Question 6

Which of the following is not necessary for the formation of metamorphic rock?

Accepted Answer

A)  calcium- rich or liquids
B)  chemically active liquids
C)  heat
D)  pressure A

Question 7

Give the name of a rock formed by regional metamorphism of a conglomerate.

Accepted Answer

The answer of Give the name of a rock formed...

Question 8

What type of stress (pressure)is illustrated in diagram B above?

Accepted Answer

The answer of What type of stress (pressure)is illustrated in...

Question 9

What term describes the zone of contact metamorphism surrounding an intrusive magma body?

Accepted Answer

A)  aureole
B)  aura
C)  auricle
D)  oracle

Question 10

_________is a nonfoliated rock formed by contact metamorphism of a shale or mudstone.

Accepted Answer

A)  Hornfels
B)  Gneiss
C)  Schist
D)  Marble

Question 11

Which of the following lists the rocks in the order of increasing grain size and increasing grade of metamorphism?

Accepted Answer

A)  schist, slate, phyllite
B)  phyllite, slate, schist
C)  slate, phyllite, schist
D)  slate, schist, phyllite

Question 12

Which of the following statements concerning slate is NOT true?

Accepted Answer

A)  Rock cleavage is common.
B)  It forms from shales and mudstones.
C)  Sedimentary features may be visible.
D)  It has abundant, coarse- grained mica.

Question 13

Which metamorphic rock, widely used for monuments and buildings, would deteriorate significantly in contact with acid rain?

Accepted Answer

The answer of Which metamorphic rock, widely used for monuments...

Question 14

During metamorphism, what is the major effect of chemically active fluids?

Accepted Answer

A)  They aid in the movement of dissolved silicate constituents and facilitate growth of the mineral grains.
B)  They increase the pressures in deeply buried, regional- metamorphic zones.
C)  They prevent partial melting so solid rocks can undergo very high temperature regional metamorphism.
D)  They facilitate the formation of schistosity and gneissic banding in hornfels and slates.

Question 15

What foliated, metamorphic rock is texturally intermediate between slate and schist?

Accepted Answer

A)  fault breccia
B)  gneiss
C)  quartzite
D)  phyllite D

Question 16

_________is thought to form by partial melting and in situ crystallization of the melted portion.

Accepted Answer

A)  Migmatite
B)  Megatite
C)  Magnetite
D)  Magmatite

Question 17

What strongly banded, metamorphic rocks show good evidence for having formed by partial melting?

Accepted Answer

The answer of What strongly banded, metamorphic rocks show good...

Question 18

Which metamorphic rock or rocks exhibit alternating layers or bands of different light- and dark- colored minerals?

Accepted Answer

The answer of Which metamorphic rock or rocks exhibit alternating...

Question 19

Which of the following best describes the conditions of contact metamorphism?

Accepted Answer

A)  Pressures are very high, the rock is deeply buried, and temperatures are raised by the Earth's internal heat.
B)  Pressures are fairly low, the rock is in the upper part of the crust, and heat is supplied from a nearby magma body.
C)  Depths are fairly shallow, but temperatures and pressures are so high that the rocks begin to partially melt.
D)  Heat is generated by shearing and mechanical movements along faults.

Question 20

What type of stress (pressure)is illustrated in diagram A above?

Accepted Answer

confining pressure
Critical th...

Exam 8: Metamorphism and Metamorphic Rocks

_________forms from the metamorphism of limestone or dolostone.

Correct AnswerverifiedShow Answer

What metamorphic rock forms by intense ductile deformation along fault zones at depth in the Earth?

Correct AnswerverifiedShow Answer

Graphite is identified in a particular schist. Which one of the following conclusions is justified?

Correct AnswerverifiedShow Answer

Which low- grade metamorphic rock, composed of extremely fine- sized mica and other mineral grains, typically exhibits well- developed rock cleavage?

Correct AnswerverifiedB

What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks?

Correct AnswerverifiedShow Answer

Which of the following is not necessary for the formation of metamorphic rock?

Correct AnswerverifiedA

Give the name of a rock formed by regional metamorphism of a conglomerate.

Correct AnswerverifiedShow Answer

What type of stress (pressure)is illustrated in diagram B above?

Correct AnswerverifiedShow Answer

What term describes the zone of contact metamorphism surrounding an intrusive magma body?

Correct AnswerverifiedShow Answer

_________is a nonfoliated rock formed by contact metamorphism of a shale or mudstone.

Correct AnswerverifiedShow Answer

Which of the following lists the rocks in the order of increasing grain size and increasing grade of metamorphism?

Correct AnswerverifiedShow Answer

Which of the following statements concerning slate is NOT true?

Correct AnswerverifiedShow Answer

Which metamorphic rock, widely used for monuments and buildings, would deteriorate significantly in contact with acid rain?

Correct AnswerverifiedShow Answer

During metamorphism, what is the major effect of chemically active fluids?

Correct AnswerverifiedShow Answer

What foliated, metamorphic rock is texturally intermediate between slate and schist?

Correct AnswerverifiedD

_________is thought to form by partial melting and in situ crystallization of the melted portion.

Correct AnswerverifiedShow Answer

What strongly banded, metamorphic rocks show good evidence for having formed by partial melting?

Correct AnswerverifiedShow Answer

Which metamorphic rock or rocks exhibit alternating layers or bands of different light- and dark- colored minerals?

Correct AnswerverifiedShow Answer

Which of the following best describes the conditions of contact metamorphism?

Correct AnswerverifiedShow Answer

What type of stress (pressure)is illustrated in diagram A above?

Correct Answerverifiedconfining pressureCritical th...View AnswerShow Answer

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B

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A

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D

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confining pressure
Critical th...
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