Question 1

In the formation of gneiss from granite,distinctive compositional bands form because of ________.

Accepted Answer

A) crystals migrating within the rock 
B) crystals dissolving,with atoms and ions migrating and reorganizing as new crystals 
C) crystals melting,with new crystals solidifying in color bands 
D) chemical reactions with groundwater 
A) crystals migrating within the rock 
B) crystals dissolving,with atoms and ions migrating and reorganizing as new crystals 
C) crystals melting,with new crystals solidifying in color bands 
D) chemical reactions with groundwater B

Question 2

A buried body of shale is subjected to differential stress,causing clay minerals to realign and produce slate.This is an example of ________.

Accepted Answer

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

Question 3

Spreading peanut butter on bread is an application of ________.

Accepted Answer

A) compressive stress 
B) pressure 
C) shear stress 
D) metasomatism 
A) compressive stress 
B) pressure 
C) shear stress 
D) metasomatism C

Question 4

Clay minerals within a slate are changed into mica minerals due to the application of heat to a rock.This is an example of ________

Accepted Answer

A) pressure solution 
B) neocrystallization 
C) plastic deformation 
D) phase change 
A) pressure solution 
B) neocrystallization 
C) plastic deformation 
D) phase change

Question 5

Preferential stress will cause crystals to rotate into 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 6

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 7

If mineral grains have been smeared out,the rock was subjected to ________.

Accepted Answer

A) shear 
B) compression 
C) tension 
D) extension 
A) shear 
B) compression 
C) tension 
D) extension

Question 8

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 9

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

Accepted Answer

See image below.Red

Question 10

During dynamothermal metamorphism several metamorphic processes are at work.Describe these processes and what effect they might have on the rocks subjected to metamorphism.

Accepted Answer

Dynamothermal metamorphism occurs in the

Question 11

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 12

Rocks subjected to ________ feel a squeezing motion.

Accepted Answer

A) metasomatism 
B) diagenesis 
C) compression 
D) extension 
A) metasomatism 
B) diagenesis 
C) compression 
D) extension

Question 13

________ metamorphism affects the greatest volumes of rock and produces the greatest variety in metamorphic rock types.

Accepted Answer

A) Thermal 
B) Dynamothermal 
C) Dynamic 
D) Shock 
A) Thermal 
B) Dynamothermal 
C) Dynamic 
D) Shock

Question 14

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 and 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 15

Which of the following processes CANNOT induce metamorphism?

Accepted Answer

A) contact with a hot pluton 
B) contact with hydrothermal fluids 
C) heat and pressure associated with deep burial 
D) cementation and compaction of grains during diagenesis 
A) contact with a hot pluton 
B) contact with hydrothermal fluids 
C) heat and pressure associated with deep burial 
D) cementation and compaction of grains during diagenesis

Question 16

Describe the resulting metamorphism that occurs next to an igneous intrusion.

Accepted Answer

A metamorphic aureole forms next to an i

Question 17

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 18

What was the direction of compression that formed the foliation in the image below?

Accepted Answer

A) top and bottom,pressing inward 
B) both sides,pressing inward 
C) top and bottom,pulling outward 
D) in and out of the image,pulling outward 
A) top and bottom,pressing inward 
B) both sides,pressing inward 
C) top and bottom,pulling outward 
D) in and out of the image,pulling outward

Question 19

The blueschist facies is a metamorphic realm of ________.

Accepted Answer

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

Question 20

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

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

Exam 7: Metamorphism: A Process of Change

In the formation of gneiss from granite,distinctive compositional bands form because of ________.

A buried body of shale is subjected to differential stress,causing clay minerals to realign and produce slate.This is an example of ________.

Spreading peanut butter on bread is an application of ________.

Clay minerals within a slate are changed into mica minerals due to the application of heat to a rock.This is an example of ________

Preferential stress will cause crystals to rotate into a preferred orientation unless the crystals are ________.

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

If mineral grains have been smeared out,the rock was subjected to ________.

Thermal (contact)metamorphism produces ________.

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

During dynamothermal metamorphism several metamorphic processes are at work.Describe these processes and what effect they might have on the rocks subjected to metamorphism.

Broadly,metamorphism involves ________.

Rocks subjected to ________ feel a squeezing motion.

________ metamorphism affects the greatest volumes of rock and produces the greatest variety in metamorphic rock types.

Which of the following processes CANNOT induce metamorphism?

Describe the resulting metamorphism that occurs next to an igneous intrusion.

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

What was the direction of compression that formed the foliation in the image below?

The blueschist facies is a metamorphic realm of ________.

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

The Earth in Context

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

The Wrath of Vulcan: Volcanic Eruptions

Pages of Earth S Past: Sedimentary Rocks

A Violent Pulse: Earthquakes

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

Deep Time: How Old Is Old

A Biography of Earth

Riches in Rock: Energy and 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

Dry Regions: The Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Interlude A: Rock Groups

Interlude B: A Surface Veneer: Sediments and Soils

Interlude C: The Rock Cycle

Interlude D: The Earth S Interior Revisited: Insights From Geophysics

Interlude E: Memories of Past Life: Fossils and Evolution

Interlude F: An Introduction to Landscapes and the Hydrologic Cycle

Filters

Two common metamorphic rocks that typically lack foliation are and .

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