Question 1

In a thickened lithosphere you expect to see

Accepted Answer

A) thinner crust. 
B) shallower geothermal gradients. 
C) steeper geothermal gradients. 
D) constant temperature increase with depth. 
A) thinner crust. 
B) shallower geothermal gradients. 
C) steeper geothermal gradients. 
D) constant temperature increase with depth.

Question 2

Directed pressure is also sometimes called

Accepted Answer

A) confining pressure. 
B) differential stress. 
C) differential pressure. 
D) confining stress. 
A) confining pressure. 
B) differential stress. 
C) differential pressure. 
D) confining stress.

Question 3

Which of the following rocks has a granular texture?

Accepted Answer

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

Question 4

During metamorphism,hydrothermal fluids can remove all _____ from an affected rock.

Accepted Answer

A) solids 
B) minerals 
C) water-soluble chemical elements 
D) chemical elements 
A) solids 
B) minerals 
C) water-soluble chemical elements 
D) chemical elements

Question 5

Which of the following metamorphic rocks forms from mafic volcanic rocks?

Accepted Answer

A) greenstone 
B) marble 
C) quartzite 
D) all of the above 
A) greenstone 
B) marble 
C) quartzite 
D) all of the above

Question 6

Which of the following processes will cause metamorphism?

Accepted Answer

A) an increase in pressure 
B) interaction with hydrothermal fluids 
C) an increase in temperature 
D) all of the above 
A) an increase in pressure 
B) interaction with hydrothermal fluids 
C) an increase in temperature 
D) all of the above

Question 7

What type of metamorphism is caused by high temperature and high pressure imposed over a large volume of crust?

Accepted Answer

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

Question 8

Metamorphic geologists often refer to the "P-T path" of a particular rock.What does the "P-T" stand for?

Accepted Answer

A) plate-tectonic 
B) phorphyroblastic-texture 
C) pressure-temperature 
D) part-time 
A) plate-tectonic 
B) phorphyroblastic-texture 
C) pressure-temperature 
D) part-time

Question 9

A nonfoliated contact metamorphic rock is called a

Accepted Answer

A) gneiss. 
B) hornfels. 
C) phyllite. 
D) schist. 
A) gneiss. 
B) hornfels. 
C) phyllite. 
D) schist.

Question 10

Which of the following statements about the metamorphism of a shale is false?

Accepted Answer

A) With increasing metamorphism,clay minerals break down to form micas. 
B) With increasing metamorphism,the grain size of the rock gets smaller. 
C) With increasing metamorphism,foliation develops. 
D) With increasing metamorphism,the amount of water in the rock decreases. 
A) With increasing metamorphism,clay minerals break down to form micas. 
B) With increasing metamorphism,the grain size of the rock gets smaller. 
C) With increasing metamorphism,foliation develops. 
D) With increasing metamorphism,the amount of water in the rock decreases.

Question 11

What is the most likely parent rock of a metamorphic rock containing muscovite,biotite,garnet,and quartz?

Accepted Answer

A) basalt 
B) limestone 
C) sandstone 
D) shale 
A) basalt 
B) limestone 
C) sandstone 
D) shale

Question 12

What is a porphyroblast?

Accepted Answer

A) a common type of copper ore deposit 
B) an igneous rock with two distinct crystal sizes 
C) a relatively large metamorphic mineral 
D) a strongly foliated metamorphic rock 
A) a common type of copper ore deposit 
B) an igneous rock with two distinct crystal sizes 
C) a relatively large metamorphic mineral 
D) a strongly foliated metamorphic rock

Question 13

Which of the following minerals is diagnostic of metamorphism?

Accepted Answer

A) calcite 
B) feldspar 
C) staurolite 
D) quartz 
A) calcite 
B) feldspar 
C) staurolite 
D) quartz

Question 14

Which of the following rocks represents the highest metamorphic grade?

Accepted Answer

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

Question 15

Granoblastic metamorphic rocks generally contain minerals that are _______ in shape.

Accepted Answer

A) linear 
B) platy 
C) equant 
D) bladed 
A) linear 
B) platy 
C) equant 
D) bladed

Question 16

A geothermometer is

Accepted Answer

A) a device that measures current rock temperatures. 
B) a device that measures temperature when lowered into deep drill holes. 
C) a mineral assemblage that reveals the maximum temperature attained by a rock. 
D) the range of temperatures encountered by a rock in its geologic history. 
A) a device that measures current rock temperatures. 
B) a device that measures temperature when lowered into deep drill holes. 
C) a mineral assemblage that reveals the maximum temperature attained by a rock. 
D) the range of temperatures encountered by a rock in its geologic history.

Question 17

What is the primary source of the carbon dioxide in metamorphic fluids?

Accepted Answer

A) atmospheric carbon 
B) carbon dioxide released from Earth's core 
C) sedimentary carbonates 
D) weathered cement and other man-made materials 
A) atmospheric carbon 
B) carbon dioxide released from Earth's core 
C) sedimentary carbonates 
D) weathered cement and other man-made materials

Question 18

In which plate tectonic setting is evidence of shock metamorphism most likely to be preserved?

Accepted Answer

A) convergent plate boundaries 
B) transform faults 
C) divergent plate boundaries 
D) continental interiors 
A) convergent plate boundaries 
B) transform faults 
C) divergent plate boundaries 
D) continental interiors

Question 19

The prograde part of a metamorphic P-T path occurs during

Accepted Answer

A) burial and cooling. 
B) exhumation and cooling. 
C) burial and heating. 
D) exhumation and heating. 
A) burial and cooling. 
B) exhumation and cooling. 
C) burial and heating. 
D) exhumation and heating.

Question 20

Carbon dioxide is one of the fluids consumed during metasomatism.What is the likely source of this fluid?

Accepted Answer

A) silicate minerals 
B) the atmosphere 
C) the core 
D) carbonate rocks 
A) silicate minerals 
B) the atmosphere 
C) the core 
D) carbonate rocks

Exam 6: Metamorphism: Alteration of Rocks by Temperature and Pressure

In a thickened lithosphere you expect to see

Directed pressure is also sometimes called

Which of the following rocks has a granular texture?

During metamorphism,hydrothermal fluids can remove all _____ from an affected rock.

Which of the following metamorphic rocks forms from mafic volcanic rocks?

Which of the following processes will cause metamorphism?

What type of metamorphism is caused by high temperature and high pressure imposed over a large volume of crust?

Metamorphic geologists often refer to the "P-T path" of a particular rock.What does the "P-T" stand for?

A nonfoliated contact metamorphic rock is called a

Which of the following statements about the metamorphism of a shale is false?

What is the most likely parent rock of a metamorphic rock containing muscovite,biotite,garnet,and quartz?

What is a porphyroblast?

Which of the following minerals is diagnostic of metamorphism?

Which of the following rocks represents the highest metamorphic grade?

Granoblastic metamorphic rocks generally contain minerals that are _______ in shape.

A geothermometer is

What is the primary source of the carbon dioxide in metamorphic fluids?

In which plate tectonic setting is evidence of shock metamorphism most likely to be preserved?

The prograde part of a metamorphic P-T path occurs during

Carbon dioxide is one of the fluids consumed during metasomatism.What is the likely source of this fluid?

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Sedimentation: Rocks Formed by Surface Processes

Deformation: Modification of Rocks by Folding and Fracturing

Clocks in Rocks: Timing the Geologic Period

Early History of the Terrestrial Planets

History of the Continents

Geobiology: Life Interacts With Earth

Volcanoes

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Stream Transport: From Mountains to Oceans

Winds and Deserts

Coastlines and Ocean Basins

Glaciers: the Work of Ice

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

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