Question 1

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

Accepted Answer

In subduction zones,temperatures remain

Question 2

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

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. 
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.

Question 4

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 rock 
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 rock

Question 5

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

Accepted Answer

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

Question 6

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 7

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 
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

Question 8

Describe the similarities and differences between schist and phyllite.

Accepted Answer

Schist and phyllite are both foliated me

Question 9

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)  metaigneous 
A)  metamorphic 
B)  igneous 
C)  sedimentary 
D)  metaigneous

Question 10

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 11

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 12

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

Accepted Answer

@#IMG-DLM& See image above.Arr

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

Spreading peanut butter on bread 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 15

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. 
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.

Question 16

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. 
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.

Question 17

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

Accepted Answer

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

Question 18

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 19

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 mantle 
A)  continents squeezing together 
B)  mountain belts collapsing 
C)  erosion 
D)  rising plumes of magma in the mantle

Question 20

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

Accepted Answer

A)  foliated 
B)  prograde 
C)  retrograde 
D)  dynamic 
A)  foliated 
B)  prograde 
C)  retrograde 
D)  dynamic

Exam 8: Metamorphism: a Process of Change

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

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

Broadly,metamorphism involves

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

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

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

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

Describe the similarities and differences between schist and phyllite.

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

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

Rocks resulting from thermal (contact)metamorphism will NOT possess

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

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?

Spreading peanut butter on bread is an application of

Foliated metamorphic rocks possess

Regional metamorphism

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

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

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

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

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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