Question 1

The preexisting rock that is subsequently altered to form a metamorphic rock is termed a ____________.

Accepted Answer

A) parent rock 
B) source rock 
C) protolith 
D) premetarock 
A) parent rock 
B) source rock 
C) protolith 
D) premetarock

Question 2

Consult the figure below.Compared to low-grade metamorphic rocks,high-grade rocks ____________.

Accepted Answer

A) always contain more quartz and feldspar 
B) are produced closer to the surface,high in the stratigraphic column 
C) are produced at greater temperatures and pressures 
D) are produced at cooler temperatures,but greater pressures 
A) always contain more quartz and feldspar 
B) are produced closer to the surface,high in the stratigraphic column 
C) are produced at greater temperatures and pressures 
D) are produced at cooler temperatures,but greater pressures

Question 3

Squashing a fly with a flyswatter is an application of ____________.

Accepted Answer

A) normal stress 
B) shear stress 
A) normal stress 
B) shear stress

Question 4

Differential stress will cause crystals to align in a preferred orientation unless the crystals are ____________.

Accepted Answer

A) primarily mica 
B) platy 
C) equant 
D) elongate 
A) primarily mica 
B) platy 
C) equant 
D) elongate

Question 5

Mylonites,formed from dynamic metamorphism,typically display ___________.

Accepted Answer

A) foliation roughly parallel to a fault 
B) very fine grains 
C) shear zones 
D) All of the above are correct. 
A) foliation roughly parallel to a fault 
B) very fine grains 
C) shear zones 
D) All of the above are correct.

Question 6

At the surface,potassium feldspar reacts with water to form clay;this is an example of ____________.

Accepted Answer

A) diagenesis 
B) erosion 
C) metamorphism 
D) weathering 
A) diagenesis 
B) erosion 
C) metamorphism 
D) weathering

Question 7

Dynamothermal (regional)metamorphism occurs when ____________.

Accepted Answer

A) rock becomes buried deeply during continental collision and mountain building 
B) regression of the sea leads to erosion of sedimentary cover atop a body of rock 
C) the upper surface of a body of rock develops a thick soil profile 
D) a pluton causes metamorphism in a small surrounding region 
A) rock becomes buried deeply during continental collision and mountain building 
B) regression of the sea leads to erosion of sedimentary cover atop a body of rock 
C) the upper surface of a body of rock develops a thick soil profile 
D) a pluton causes metamorphism in a small surrounding region

Question 8

The development of 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 
A) slaty cleavage 
B) phyllitic luster 
C) schistosity 
D) compositional banding

Question 9

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 
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

Question 10

Thermal (contact)metamorphism produces ____________.

Accepted Answer

A) foliated rocks only 
B) nonfoliated rocks only 
C) both foliated and nonfoliated rocks 
A) foliated rocks only 
B) nonfoliated rocks only 
C) both foliated and nonfoliated rocks

Question 11

Rapid,deep burial of sediments in an accretionary prism leads to the formation of a metamorphic rock termed ____________.

Accepted Answer

A) blueschist 
B) greenschist 
C) migmatite 
D) gneiss 
A) blueschist 
B) greenschist 
C) migmatite 
D) gneiss

Question 12

Which type of metamorphism affects the greatest volumes of rock?

Accepted Answer

A) thermal metamorphism 
B) dynamothermal metamorphism 
C) dynamic metamorphism 
A) thermal metamorphism 
B) dynamothermal metamorphism 
C) dynamic metamorphism

Question 13

Consult the figure below.Hot water reacting with crust is the basis for what type of metamorphism?

Accepted Answer

A) contact 
B) hydrothermal 
C) regional 
D) shock 
A) contact 
B) hydrothermal 
C) regional 
D) shock

Question 14

Foliated metamorphic rocks possess ____________.

Accepted Answer

A) leafy plant fossils (ancient foliage) 
B) a homogenous texture resulting from randomly oriented grains 
C) a planar fabric consisting of mineral grains in preferred orientations or preferred patterns of association (banding) 
D) minerals precipitated directly from sea water 
A) leafy plant fossils (ancient foliage) 
B) a homogenous texture resulting from randomly oriented grains 
C) a planar fabric consisting of mineral grains in preferred orientations or preferred patterns of association (banding) 
D) minerals precipitated directly from sea water

Question 15

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

Accepted Answer

A) Limestone 
B) Sandstone 
C) Shale 
D) Slate 
A) Limestone 
B) Sandstone 
C) Shale 
D) Slate

Question 16

Precambrian metamorphic rocks are exposed at the surface ____________.

Accepted Answer

A) on Mars and Venus,but nowhere on Earth 
B) at places in continental interiors termed platforms 
C) at places in continental interiors termed shields 
D) at the bottom of the deep sea 
A) on Mars and Venus,but nowhere on Earth 
B) at places in continental interiors termed platforms 
C) at places in continental interiors termed shields 
D) at the bottom of the deep sea

Question 17

A buried body of aragonitic limestone is recrystallized at low temperatures and pressures,producing calcite;this is an example of ____________.

Accepted Answer

A) diagenesis 
B) erosion 
C) metamorphism 
D) weathering 
A) diagenesis 
B) erosion 
C) metamorphism 
D) weathering

Question 18

Dynamothermal (regional)metamorphism produces ____________.

Accepted Answer

A) foliated rocks only 
B) nonfoliated rocks only 
C) both foliated and nonfoliated rocks 
A) foliated rocks only 
B) nonfoliated rocks only 
C) both foliated and nonfoliated rocks

Question 19

All metamorphic rocks are formed within a fairly narrow range of temperature,approximately 400 to 600°C.

Accepted Answer

A) True 
 B)False

Question 20

A primary difference between phyllite and schist is ____________.

Accepted Answer

A) schist contains mica,whereas phyllite contains only clay 
B) phyllite contains mica,whereas schist contains only clay 
C) mica crystals within schist are larger than those within phyllite 
D) mica crystals within phyllite are larger than those within schist 
A) schist contains mica,whereas phyllite contains only clay 
B) phyllite contains mica,whereas schist contains only clay 
C) mica crystals within schist are larger than those within phyllite 
D) mica crystals within phyllite are larger than those within schist

Exam 8: Metamorphism: A Process of Change

The preexisting rock that is subsequently altered to form a metamorphic rock is termed a ____________.

Consult the figure below.Compared to low-grade metamorphic rocks,high-grade rocks ____________.

Squashing a fly with a flyswatter is an application of ____________.

Differential stress will cause crystals to align in a preferred orientation unless the crystals are ____________.

Mylonites,formed from dynamic metamorphism,typically display ___________.

At the surface,potassium feldspar reacts with water to form clay;this is an example of ____________.

Dynamothermal (regional)metamorphism occurs when ____________.

The development of a preferred orientation of large,flaky mica crystals within metamorphic rock is termed ____________.

Rocks resulting from thermal (contact)metamorphism will not possess ____________.

Thermal (contact)metamorphism produces ____________.

Rapid,deep burial of sediments in an accretionary prism leads to the formation of a metamorphic rock termed ____________.

Which type of metamorphism affects the greatest volumes of rock?

Consult the figure below.Hot water reacting with crust is the basis for what type of metamorphism?

Foliated metamorphic rocks possess ____________.

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

Precambrian metamorphic rocks are exposed at the surface ____________.

A buried body of aragonitic limestone is recrystallized at low temperatures and pressures,producing calcite;this is an example of ____________.

Dynamothermal (regional)metamorphism produces ____________.

All metamorphic rocks are formed within a fairly narrow range of temperature,approximately 400 to 600°C.

A primary difference between phyllite and schist is ____________.

Cosmology and the Birth of Earth

Journey to the Center of the Earth

Drifting Continents and Spreading Seas

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rock

Pages of Earths Past: Sedimentary Rocks

The Wrath of Vulcan: Volcanic Eruptions

A Violent Pulse: Earthquakes

Cracks, crags, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Squeezing Power From a Stone: Energy Resources

Riches in Rock: Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Streams and Floods: The Geology of Running Water

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

An Envelope of Gas: Earths Atmosphere and Climate

Dry Settings: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

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