Question 1

Most magma cools___________ the surface of the earth where it forms___________.

Accepted Answer

below/bene

Question 2

The ultramafic rock composed predominately of___________ is known as peridotite, and comprises the lower ___________crust.

Accepted Answer

The answer of The ultramafic rock composed predominately of___________ is...

Question 3

By the process of___________ the composition of a magma can be changed when it comes into contact with country rock.

Accepted Answer

The answer of By the process of___________ the composition of...

Question 4

Mafic magma has lower viscosity.

Accepted Answer

A) True 
 B)False

Question 5

What is an example of a glassy rock?

Accepted Answer

The answer of What is an example of a glassy...

Question 6

Magma accumulates in reservoirs known as___________

Accepted Answer

The answer of Magma accumulates in reservoirs known as___________...

Question 7

Granites are uncommon in North America.

Accepted Answer

A) True 
 B)False

Question 8

A sill is a

Accepted Answer

A)  concordant, tabular body of intrusive igneous rocks. 
B)  discordant, tabular body of intrusive igneous rocks. 
C)  discordant, massive body of intrusive igneous rocks. 
D)  concordant, tabular body of extrusive igneous rocks. 
E)  concordant, tabular body of intrusive igneous rocks that warps rocks upward. 
A)  concordant, tabular body of intrusive igneous rocks. 
B)  discordant, tabular body of intrusive igneous rocks. 
C)  discordant, massive body of intrusive igneous rocks. 
D)  concordant, tabular body of extrusive igneous rocks. 
E)  concordant, tabular body of intrusive igneous rocks that warps rocks upward.

Question 9

List two things which Bowen's Reaction Series can help explain.

Accepted Answer

any two of the following: how felsic mag

Question 10

A porhyritic texture indicates that the rock or rock body

Accepted Answer

A)  initially cooled slowly, then more rapidly. 
B)  initially cooled rapidly, then more slowly. 
C)  cooled slowly, becoming enriched in silica. 
D)  cooled rapidly, composition staying the same. 
E)  has a history too complex to make any of the above statements. 
A)  initially cooled slowly, then more rapidly. 
B)  initially cooled rapidly, then more slowly. 
C)  cooled slowly, becoming enriched in silica. 
D)  cooled rapidly, composition staying the same. 
E)  has a history too complex to make any of the above statements.

Question 11

Briefly explain the two hypotheses for how complex pegmatites form.

Accepted Answer

According to one hypothesis, crystalliza

Question 12

Plutonic rocks

Accepted Answer

A)  form below the surface of the ground. 
B)  form above the surface of the ground. 
C)  form by crystallization of magmas intruded into surrounding rocks. 
D)  A and C 
E)  all of the above 
A)  form below the surface of the ground. 
B)  form above the surface of the ground. 
C)  form by crystallization of magmas intruded into surrounding rocks. 
D)  A and C 
E)  all of the above

Question 13

___________is the first ferromagnesian mineral to crystallize.

Accepted Answer

The answer of ___________is the first ferromagnesian mineral to crystallize....

Question 14

List some of the mineral commodities that have been recovered from pegmatites.

Accepted Answer

Gem-quality mineral specimens;

Question 15

Most batholiths are emplaced by the process of granitization.

Accepted Answer

A) True 
 B)False

Question 16

Relative to the emplacement and exposure of granites, what do granites in Colorado, Idaho, Montana, California, and Alaska have in common?

Accepted Answer

They were emplaced at great de

Question 17

The viscosity of magma is dependent on

Accepted Answer

A)  temperature and depth 
B)  water content and depth 
C)  silica content and early-formed crystals 
D)  silica content and temperature 
E)  early-formed crystals and size of the magma chamber 
A)  temperature and depth 
B)  water content and depth 
C)  silica content and early-formed crystals 
D)  silica content and temperature 
E)  early-formed crystals and size of the magma chamber

Question 18

Basalts are common___________ trusive rocks in the upper part of the___________crust, whereas gabbros are common ___________trusive rocks formed in the lower part of the ___________ crust.

Accepted Answer

ex-, ocean

Question 19

Dikes are concordant and sills are discordant.

Accepted Answer

A) True 
 B)False

Question 20

Melting of crustal rocks produces silica-rich magmas.

Accepted Answer

A) True 
 B)False

Most magma cools_ the surface of the earth where it forms_.

The ultramafic rock composed predominately of_ is known as peridotite, and comprises the lower _crust.

By the process of___________ the composition of a magma can be changed when it comes into contact with country rock.

Mafic magma has lower viscosity.

What is an example of a glassy rock?

Magma accumulates in reservoirs known as___________

Granites are uncommon in North America.

A sill is a

List two things which Bowen's Reaction Series can help explain.

A porhyritic texture indicates that the rock or rock body

Briefly explain the two hypotheses for how complex pegmatites form.

Plutonic rocks

___________is the first ferromagnesian mineral to crystallize.

List some of the mineral commodities that have been recovered from pegmatites.

Most batholiths are emplaced by the process of granitization.

Relative to the emplacement and exposure of granites, what do granites in Colorado, Idaho, Montana, California, and Alaska have in common?

The viscosity of magma is dependent on

Basalts are common_____ trusive rocks in the upper part of the_crust, whereas gabbros are common _trusive rocks formed in the lower part of the _____ crust.

Dikes are concordant and sills are discordant.

Melting of crustal rocks produces silica-rich magmas.

Understanding Earth: A Dynamic and Evolving Planet

Plate Tectonics: A Unifying Theory

Minerals-The Building Blocks of Rocks

Volcanoes and Volcanism

Weathering, Erosion, and Soil

Sediment and Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time: Concepts and Principles

Earthquakes

Earths Interior

The Seafloor

Deformation, Mountain Building, and the Evolution of Continents

Mass Wasting

Running Water

Groundwater

Glaciers and Glaciation

The Work of Winds and Deserts

Shorelines and Shoreline Processes

Geology and Humanity

Filters

Exam 4: Igneous Rocks and Intrusive Igneous Activity

Most magma cools___________ the surface of the earth where it forms___________.

The ultramafic rock composed predominately of___________ is known as peridotite, and comprises the lower ___________crust.

By the process of___________ the composition of a magma can be changed when it comes into contact with country rock.

Mafic magma has lower viscosity.

What is an example of a glassy rock?

Magma accumulates in reservoirs known as___________

Granites are uncommon in North America.

A sill is a

List two things which Bowen's Reaction Series can help explain.

A porhyritic texture indicates that the rock or rock body

Briefly explain the two hypotheses for how complex pegmatites form.

Plutonic rocks

___________is the first ferromagnesian mineral to crystallize.

List some of the mineral commodities that have been recovered from pegmatites.

Most batholiths are emplaced by the process of granitization.

Relative to the emplacement and exposure of granites, what do granites in Colorado, Idaho, Montana, California, and Alaska have in common?

The viscosity of magma is dependent on

Basalts are common___________ trusive rocks in the upper part of the___________crust, whereas gabbros are common ___________trusive rocks formed in the lower part of the ___________ crust.

Dikes are concordant and sills are discordant.

Melting of crustal rocks produces silica-rich magmas.

Understanding Earth: A Dynamic and Evolving Planet

Plate Tectonics: A Unifying Theory

Minerals-The Building Blocks of Rocks

Volcanoes and Volcanism

Weathering, Erosion, and Soil

Sediment and Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time: Concepts and Principles

Earthquakes

Earths Interior

The Seafloor

Deformation, Mountain Building, and the Evolution of Continents

Mass Wasting

Running Water

Groundwater

Glaciers and Glaciation

The Work of Winds and Deserts

Shorelines and Shoreline Processes

Geology and Humanity

Filters

Most magma cools_ the surface of the earth where it forms_.

The ultramafic rock composed predominately of_ is known as peridotite, and comprises the lower _crust.

Basalts are common_____ trusive rocks in the upper part of the_crust, whereas gabbros are common _trusive rocks formed in the lower part of the _____ crust.