Question 1

The figure below shows the application of

Accepted Answer

A)  tension. 
B)  pressure. 
C)  normal stress. 
D)  shear stress. 
A)  tension. 
B)  pressure. 
C)  normal stress. 
D)  shear stress.

Question 2

The application of ________ during metamorphism causes elongated crystals to align parallel with each other.When this happens,the rock develops ________.

Accepted Answer

A)  pressure; a homogeneous texture 
B)  differential stress; foliation 
C)  high temperatures; foliation 
D)  pressure; foliation 
A)  pressure; a homogeneous texture 
B)  differential stress; foliation 
C)  high temperatures; foliation 
D)  pressure; foliation

Question 3

The net chemical change in a metamorphic rock induced by a reaction with hot groundwater is termed

Accepted Answer

A)  foliation. 
B)  metasomatism. 
C)  anachronism. 
D)  hydrosomatism. 
A)  foliation. 
B)  metasomatism. 
C)  anachronism. 
D)  hydrosomatism.

Question 4

During dynamothermal (regional)metamorphism,several metamorphic processes are at work.Describe these processes and the effects they might have on rocks subjected to this type of metamorphism.

Accepted Answer

Dynamothermal metamorphism occurs in the

Question 5

Consult the figure below.The region of thermally metamorphosed rock surrounding a cooled pluton is called a (n)

Accepted Answer

A)  shear zone. 
B)  aureole. 
C)  oriole. 
D)  metamorphic ring. 
A)  shear zone. 
B)  aureole. 
C)  oriole. 
D)  metamorphic ring.

Question 6

The blueschist facies form under which of these conditions:

Accepted Answer

A)  high temperature and high pressure 
B)  low temperature and low pressure 
C)  high temperature but relatively low pressure 
D)  high pressure but relatively low temperature 
A)  high temperature and high pressure 
B)  low temperature and low pressure 
C)  high temperature but relatively low pressure 
D)  high pressure but relatively low temperature

Question 7

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 8

Two common metamorphic rocks that typically lack foliation are ________ and ________.

Accepted Answer

A)  slate; phyllite 
B)  gneiss; migmatite 
C)  quartzite; marble 
D)  schist; metaconglomerate 
A)  slate; phyllite 
B)  gneiss; migmatite 
C)  quartzite; marble 
D)  schist; metaconglomerate

Question 9

A protolith

Accepted Answer

A)  is always metamorphic rock. 
B)  is always igneous rock. 
C)  is always sedimentary rock. 
D)  may belong to any of the three primary rock types. 
A)  is always metamorphic rock. 
B)  is always igneous rock. 
C)  is always sedimentary rock. 
D)  may belong to any of the three primary rock types.

Question 10

Metamorphic grade describes the intensity or degree of metamorphism.The metamorphic grade of a rock is determined mainly by the temperature and amount of recrystallization or neocrystallization to which a rock is subjected.List the following rocks in order from low-grade to high-grade metamorphic rocks,then describe the changes seen in the suite of rocks as the grade is increased: gneiss,slate,schist,phyllite,and migmatite.

Accepted Answer

Order from low grade to high grade: slat

Question 11

Retrograde metamorphism will not occur unless an increased amount of ________ is added to the system.

Accepted Answer

A)  temperature 
B)  differential stress 
C)  pressure 
D)  water 
A)  temperature 
B)  differential stress 
C)  pressure 
D)  water

Question 12

Consult the figure below.Compared with amphibolite metamorphic facies,greenschist facies

Accepted Answer

A)  consist of lower-grade rocks. 
B)  consist of higher-grade rocks. 
C)  involve partially melted rocks. 
D)  have the same grade but a different chemistry due to different protoliths. 
A)  consist of lower-grade rocks. 
B)  consist of higher-grade rocks. 
C)  involve partially melted rocks. 
D)  have the same grade but a different chemistry due to different protoliths.

Question 13

Thermal (contact)metamorphism produces

Accepted Answer

A)  foliated rocks only. 
B)  nonfoliated rocks only. 
C)  both foliated and nonfoliated rocks. 
D)  Thermal metamorphism does not produce any metamorphic rocks. 
A)  foliated rocks only. 
B)  nonfoliated rocks only. 
C)  both foliated and nonfoliated rocks. 
D)  Thermal metamorphism does not produce any metamorphic rocks.

Question 14

Which of the following statements is false? Hornfels facies rocks

Accepted Answer

A)  are typically nonfoliated. 
B)  form at high pressures and low temperatures. 
C)  often form as a result of contact metamorphism. 
D)  are often associated with igneous intrusions 
A)  are typically nonfoliated. 
B)  form at high pressures and low temperatures. 
C)  often form as a result of contact metamorphism. 
D)  are often associated with igneous intrusions

Question 15

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

Accepted Answer

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

Question 16

Clay minerals within a buried body of slate are recrystallized at high temperatures and pressures to form mica,producing a rock called phyllite.This is an example of

Accepted Answer

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

Question 17

The mineral assemblage within metamorphic rock is

Accepted Answer

A)  always identical to that found within its protolith. 
B)  dependent only on the mineral assemblage of its protolith. 
C)  dependent only on the temperature and pressure of formation. 
D)  dependent on both the mineral assemblage of its protolith and the temperature and pressure of formation. 
A)  always identical to that found within its protolith. 
B)  dependent only on the mineral assemblage of its protolith. 
C)  dependent only on the temperature and pressure of formation. 
D)  dependent on both the mineral assemblage of its protolith and the temperature and pressure of formation.

Question 18

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 19

A heavy book is placed on top of a ball of pizza dough,causing the dough to flatten.This is an application of

Accepted Answer

A)  normal stress. 
B)  pressure. 
C)  shear stress. 
D)  metasomatism. 
A)  normal stress. 
B)  pressure. 
C)  shear stress. 
D)  metasomatism.

Question 20

Name the type of metamorphism that occurs next to an igneous intrusion.Describe the effects that this type of metamorphism has on the preexisting (country)rock surrounding the intrusion.

Accepted Answer

The metamorphism created by the intrusio

Exam 8: Metamorphism: a Process of Change

The figure below shows the application of

The application of ________ during metamorphism causes elongated crystals to align parallel with each other.When this happens,the rock develops ________.

The net chemical change in a metamorphic rock induced by a reaction with hot groundwater is termed

During dynamothermal (regional)metamorphism,several metamorphic processes are at work.Describe these processes and the effects they might have on rocks subjected to this type of metamorphism.

Consult the figure below.The region of thermally metamorphosed rock surrounding a cooled pluton is called a (n)

The blueschist facies form under which of these conditions:

Potassium feldspar reacts with water to form clay.This is an example of

Two common metamorphic rocks that typically lack foliation are ________ and ________.

A protolith

Retrograde metamorphism will not occur unless an increased amount of ________ is added to the system.

Consult the figure below.Compared with amphibolite metamorphic facies,greenschist facies

Thermal (contact)metamorphism produces

Which of the following statements is false? Hornfels facies rocks

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

Clay minerals within a buried body of slate are recrystallized at high temperatures and pressures to form mica,producing a rock called phyllite.This is an example of

The mineral assemblage within metamorphic rock is

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

A heavy book is placed on top of a ball of pizza dough,causing the dough to flatten.This is an application of

Name the type of metamorphism that occurs next to an igneous intrusion.Describe the effects that this type of metamorphism has on the preexisting (country)rock surrounding the intrusion.

Cosmology and the Birth of the 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 Rocks

Pages of Earths Past: Sedimentary Rocks

The Wrath of Vulcan: Volcanic Eruptions

A Violent Pulse: Earthquakes

Crags,cracks,and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of the 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: the Earths Atmosphere and Climate

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Introducing Rocks

a Surface Veneer: Sediments and Soils

the Rock Cycle in the Earth System

the Earths Interior, Revisited: Seismic Layering, Gravity, and the Magnetic Field

Memories of Past Life: Fossils and Evolution

Ever-Changing Landscapes and the Hydrologic Cycle

Prelude: and Just What Is Geology

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The application of during metamorphism causes elongated crystals to align parallel with each other.When this happens,the rock develops .

Two common metamorphic rocks that typically lack foliation are and .