Question 1

How does a batholith differ from a stock?

Accepted Answer

A batholith has an exposed sur

Question 2

Name some common uses of granitic rocks.

Accepted Answer

building stone,tombs

Question 3

How did Shiprock,New Mexico form?

Accepted Answer

Shiprock is a volcanic neck th

Question 4

The two main categories of igneous rocks are ____________________ and ____________________.

Accepted Answer

volcanic/extrusive,p

Question 5

Large crystals found in a fine-grained groundmass can indicate what?

Accepted Answer

A)  origin from a magma with an early intrusive phase followed by an extrusive phase 
B)  origin from a magma with an early extrusive phase followed by an intrusive phase 
C)  a rock of mixed volcanic-plutonic origin 
D)  intrusive slow cooling 
E)  origin from a magma with an early intrusive phase followed by an extrusive phase; a rock of mixed volcanic-plutonic origin 
A)  origin from a magma with an early intrusive phase followed by an extrusive phase 
B)  origin from a magma with an early extrusive phase followed by an intrusive phase 
C)  a rock of mixed volcanic-plutonic origin 
D)  intrusive slow cooling 
E)  origin from a magma with an early intrusive phase followed by an extrusive phase; a rock of mixed volcanic-plutonic origin

Question 6

Igneous rocks formed by explosive volcanic activity have a texture that is termed what?

Accepted Answer

A)  aphanitic 
B)  porphyritic 
C)  glassy 
D)  phaneritic 
E)  pyroclastic 
A)  aphanitic 
B)  porphyritic 
C)  glassy 
D)  phaneritic 
E)  pyroclastic

Question 7

Intrusive igneous (plutonic)rocks ____.

Accepted Answer

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

Question 8

Briefly explain how it is possible for a single magma to yield rocks of felsic,intermediate,and mafic composition.

Accepted Answer

There are three ways for a single magma

Question 9

The only minerals in the continuous branch of Bowen's reaction series are the ____________________.

Accepted Answer

plagioclas

Question 10

Briefly explain why Bowen's reaction series predicts that mafic intrusive rocks should be much more common than felsic intrusive rocks.

Accepted Answer

If crystal settling produces t

Question 11

An igneous rock in which large mineral grains called ____________________ are suspended in a finely crystalline groundmass is called a(n)____________________.

Accepted Answer

phenocryst

Question 12

What are flood basalts?

Accepted Answer

Flood basalts are va

Question 13

Partial melting of basalt,together with the processes of assimilation,____________________settling,and ____________________ mixing are believed to explain the generation of felsic intrusive magmas from ____________________ magmas.

Accepted Answer

The answer of Partial melting of basalt,together with the processes...

Question 14

Concordant tabular sheetlike plutons are called ____________________,whereas discordant tabular plutons are called ____________________.

Accepted Answer

The answer of Concordant tabular sheetlike plutons are called ____________________,whereas...

Question 15

Why do pegmatite mineral crystals grow so large?

Accepted Answer

The vapor phase inhibits the f

Question 16

Batholiths are emplaced by forceful injection as magma moves upward through country rock.

Accepted Answer

A) True 
 B)False

Question 17

What is a pluton?

Accepted Answer

a body of rock which

Question 18

What is the average geothermal gradient for Earth?

Accepted Answer

about 25°C

Question 19

Trapped gases in cooling lava form cavities called ____________________.Cinder cones may contain large amounts of ____________________ which contains more of these cavities than it does rock.

Accepted Answer

The answer of Trapped gases in cooling lava form cavities...

Question 20

Batholiths and stocks can be important sources of minerals such as ____________________ and ____________________.

Accepted Answer

gold,coppe

Exam 4: Igneous Rocks and Plutons

How does a batholith differ from a stock?

Name some common uses of granitic rocks.

How did Shiprock,New Mexico form?

The two main categories of igneous rocks are ____________________ and ____________________.

Large crystals found in a fine-grained groundmass can indicate what?

Igneous rocks formed by explosive volcanic activity have a texture that is termed what?

Intrusive igneous (plutonic)rocks ____.

Briefly explain how it is possible for a single magma to yield rocks of felsic,intermediate,and mafic composition.

The only minerals in the continuous branch of Bowen's reaction series are the ____________________.

Briefly explain why Bowen's reaction series predicts that mafic intrusive rocks should be much more common than felsic intrusive rocks.

An igneous rock in which large mineral grains called ____________________ are suspended in a finely crystalline groundmass is called a(n)____________________.

What are flood basalts?

Partial melting of basalt,together with the processes of assimilation,____________________settling,and ____________________ mixing are believed to explain the generation of felsic intrusive magmas from ____________________ magmas.

Concordant tabular sheetlike plutons are called ____________________,whereas discordant tabular plutons are called ____________________.

Why do pegmatite mineral crystals grow so large?

Batholiths are emplaced by forceful injection as magma moves upward through country rock.

What is a pluton?

What is the average geothermal gradient for Earth?

Trapped gases in cooling lava form cavities called ____________________.Cinder cones may contain large amounts of ____________________ which contains more of these cavities than it does rock.

Batholiths and stocks can be important sources of minerals such as ____________________ and ____________________.

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

Earthquakes and Earth's Interior

Deformation,Mountain Building,and Earth's Crust

Mass Wasting

Running Water Streams and Rivers

Groundwater

Glaciers and Glaciation

The Work of Wind and Deserts

Oceans, Shorelines, and Shoreline Processes

Geologic Time: Concepts and Principles

Organic Evolution The Theory and Its Supporting Evidence

Precambrian Earth and Life History

Paleozoic Earth History

Paleozoic Life History

Mesozoic Earth and Life History

Cenozoic Earth and Life History

Geology in Perspective

Filters

The two main categories of igneous rocks are and .

An igneous rock in which large mineral grains called are suspended in a finely crystalline groundmass is called a(n).

Partial melting of basalt,together with the processes of assimilation,settling,and mixing are believed to explain the generation of felsic intrusive magmas from magmas.

Concordant tabular sheetlike plutons are called ,whereas discordant tabular plutons are called .

Trapped gases in cooling lava form cavities called .Cinder cones may contain large amounts of which contains more of these cavities than it does rock.

Batholiths and stocks can be important sources of minerals such as and .