Question 1

When magma cools rapidly,nucleation (increases/decreases)____________________,the rate of crystal growth (increases/decreases)____________________,and the resulting rock is ____________________-grained.

Accepted Answer

The answer of When magma cools rapidly,nucleation (increases/decreases)____________________,the rate of...

Question 2

Rapid cooling of magma results in a(n)____________________-grained texture called ____________________.

Accepted Answer

The answer of Rapid cooling of magma results in a(n)____________________-grained...

Question 3

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 4

When magma cools slowly,crystal growth proceeds at a relatively ____________________ speed,and the resultant rock is ____________________ in texture.

Accepted Answer

The answer of When magma cools slowly,crystal growth proceeds at...

Question 5

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 6

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 7

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

Accepted Answer

The answer of The two main categories of igneous rocks...

Question 8

The presence of ____________________,which are incompletely melted pieces of rock within igneous rocks,demonstrates that ____________________ occurs.

Accepted Answer

The answer of The presence of ____________________,which are incompletely melted...

Question 9

Andesite and ____________________ are respectively ____________________-trusive and ____________________-trusive rocks formed in volcanic chains along ____________________ plate boundaries.

Accepted Answer

The answer of Andesite and ____________________ are respectively ____________________-trusive and...

Question 10

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

Accepted Answer

The answer of The only minerals in the continuous branch...

Question 11

____________________ is the first ferromagnesian mineral to crystallize from a mafic magma.

Accepted Answer

The answer of ____________________ is the first ferromagnesian mineral to...

Question 12

The presence of country rock inclusions in an intrusive igneous rock is evidence that the rock underwent the process of ____________________.

Accepted Answer

The answer of The presence of country rock inclusions in...

Question 13

The largest intrusive bodies are called ____________________,and,by definition,they must have at least ____________________ square kilometers of surface area.

Accepted Answer

The answer of The largest intrusive bodies are called ____________________,and,by...

Question 14

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

Accepted Answer

The answer of An igneous rock in which large mineral...

Question 15

Igneous rocks of dark color are generally rich in the chemical elements ____________________ and ____________________,while those of light color are generally rich in ____________________ and ____________________.

Accepted Answer

The answer of Igneous rocks of dark color are generally...

Question 16

Basalt and gabbro are compositional equivalents,which means that they are made up of the same ____________________ but have different ____________________.

Accepted Answer

The answer of Basalt and gabbro are compositional equivalents,which means...

Question 17

Batholiths are mostly emplaced by ____________________ ____________________ as magma moves upward into country rock.

Accepted Answer

The answer of Batholiths are mostly emplaced by ____________________ ____________________...

Question 18

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

Accepted Answer

The answer of Batholiths and stocks can be important sources...

Question 19

According to Bowen's reaction series,crystal settling should result in the magma being separated in lower layers rich in the early-formed ____________________ minerals,and upper layers enriched in later-formed ____________________ minerals.

Accepted Answer

The answer of According to Bowen's reaction series,crystal settling should...

Question 20

____________________ are concordant,mushroom-shaped plutons.

Accepted Answer

The answer of ____________________ are concordant,mushroom-shaped plutons....

Quiz 4: Igneous Rocks and Intrusive Igneous Activity

When magma cools rapidly,nucleation (increases/decreases),the rate of crystal growth (increases/decreases),and the resulting rock is -grained.

Rapid cooling of magma results in a(n)-grained texture called .

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.

When magma cools slowly,crystal growth proceeds at a relatively speed,and the resultant rock is in texture.

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.

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

The presence of ,which are incompletely melted pieces of rock within igneous rocks,demonstrates that occurs.

Andesite and are respectively -trusive and -trusive rocks formed in volcanic chains along plate boundaries.

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

____________________ is the first ferromagnesian mineral to crystallize from a mafic magma.

The presence of country rock inclusions in an intrusive igneous rock is evidence that the rock underwent the process of ____________________.

The largest intrusive bodies are called ,and,by definition,they must have at least square kilometers of surface area.

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

Igneous rocks of dark color are generally rich in the chemical elements and ,while those of light color are generally rich in and .

Basalt and gabbro are compositional equivalents,which means that they are made up of the same but have different .

Batholiths are mostly emplaced by as magma moves upward into country rock.

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

According to Bowen's reaction series,crystal settling should result in the magma being separated in lower layers rich in the early-formed minerals,and upper layers enriched in later-formed minerals.

____________________ are concordant,mushroom-shaped plutons.