Lesson 7 Meta Rocks

Question 1

Vein deposits and disseminated deposits are produced from what?

Answer 1

hydrothermal solutions

Question 2

Deposited distributed throughout the entire rock mass?

Answer 2

disseminated deposits

Question 3

What drives a change in contact metamorphism?

Answer 3

by a rise in temp

Question 4

What color is marble?

Answer 4

variety

Question 5

Metamorphism takes place where preexisting rock is subject to _________those in which it formed

Answer 5

temperatures and pressures unlike

Question 6

FOLIATED OR NONFOLIATED:

marble

Answer 6

nonfoliated

Question 7

What are chemically active fluids mainly?

Answer 7

water and other violates

Question 8

FOLIATED OR NONFOLIATED:

Schists

Answer 8

foliated

Question 9

What two places does the metamorphic agent pressure come from?

Answer 9

Burial (confining pressure)

Differential stress during mountain building

Question 10

What is a example of high grade?

Answer 10

causes original features to be obliterated

Question 11

What are the two types of metamorphism?

Answer 11

regional metamorphism

contact metamorphism

Question 12

Where does contacts/thermal metamorphism occur?

Answer 12

near a mass of magma

Question 13

FOLIATED OR NONFOLIATED:

gneiss

Answer 13

foliated

Question 14

Name the rock-
Parent rock - quartz sandstone
Quartz grains are fused

Answer 14

quartzite

Question 15

What is an example of low grade?

Answer 15

shale becomes slate

Question 16

Where do metamorphic rocks come from?

Answer 16

Igneous rocks
Sedimentary rocks
Other metamorphic rocks

Question 17

Name the rock-
Strongly foliated
“Platy”
Types based on composition (e.g., mica schist)

Answer 17

schists

Question 18

Are quartz grains fused or unfused?

Answer 18

fused

Question 19

FOLIATED OR NONFOLIATED:

slate

Answer 19

foliated

Question 20

What are the two types of degrees of metamorphism?

Answer 20

low-grade

high-grade

Question 21

Metamorphic processes cause many changes in rocks, including what three things?

Answer 21

density
growth of larger mineral crystals
foliation

Question 22

Deposits in fractures or bedding planes?

Answer 22

Vein deposit

Question 23

Where is the degree of metamorphism shown?

Answer 23

a rocks texture and mineralogy

Question 24

Some of the most important accumulations of metallic mineral resources are produced by _______and_______processes.

Answer 24

igneous and metamorphic

Question 25

What type of metamorphism produces the greatest volume of metamorphic rock?

Answer 25

regional

Question 26

Name the rock- Strong segregation of silicate minerals "Banded" texture

Answer 26

gneiss

Question 27

Hot, metal-rich fluids associated with cooling magma bodies?

Answer 27

hydrothermal solutions

Question 28

What rock has a parent - limestone?

Answer 28

marble

Question 29

Reorientation of the mineral grains into a layered or banded appearance

Answer 29

foliation

Question 30

Name the rock- Fine-grained Splits easily

Answer 30

slate

Question 31

What does chemical active fluids promote and how?

Answer 31

Promote recrystallization by enhancing ion migration

Question 32

What is the most important agent of metamorphism? What does it provide? What does it result in?

Answer 32

heat energy to rive reaction results in recrystallization of minerals

Question 33

What rock is used as building stone?

Answer 33

marble

Question 34

What rock has a parent quartz sandstone?

Answer 34

quartzite

Question 35

What are the metamorphic agents ?

Answer 35

heat pressure (stress) chemically active fluids

Question 36

What type of metamorphism has change is driven by a rise in temperature?

Answer 36

contact/thermal

Question 37

What type of metamorphism occurs near a mass of magma?

Answer 37

contact/thermal

Question 38

FOLIATED OR NONFOLIATED: | quartzite

Answer 38

nonfoliated

Question 39

Marble has large interlocking _____crystals

Answer 39

calcite

Question 40

What type of metamorphism has directed pressures and high temperatures during mountain building?

Answer 40

regional

Question 41

``` Name the rock- Parent rock - limestone Large, interlocking calcite crystals Used as a building stone Variety of colors ```

Answer 41

marble

Question 42

What are the types of metamorphic texture?

Answer 42

foliated rocks | non-foliated rocks

Question 43

What are metamorphic rocks described as?

Answer 43

"changed form" rocks

Question 44

What two things are made from hydro thermal solutions?

Answer 44

Vein deposits | Disseminated deposits