Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

GEOLOGY > Igneous Rock > Flashcards

Igneous Rock Flashcards

1
Q

Light colored rock that is high in silica

A

Felcic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Acidic rock

A

Felsic rock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Gray colored
Ex: andesite and diorite

A

Intermediate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Dark colored
Silica and alkalis is less

A

Mafic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Basic rock

A

Mafic rock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Very dark colored
Highest density
Quartz is absent

A

Ultramafic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Fine grain
Fast cooling at the surface

A

Aphanitic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Course grain
Slow cooling

A

Phanitic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Large crystal embedded on the small mineral

A

Porphyritic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Wholly glassy texture

A

Holohyaline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Partially crystalline and glassy

A

Merocrystalline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Wholly crystalline

A

Holocrystalline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Minerals are completely bounded by crystal faces

A

Eurheral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Idiomorphic

A

Eutheral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Xenomorphic

A

Anhedral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Crystal faces are absenr

A

Anhedral

17
Q

Partly bounded by crystal faces

A

Subhedral

18
Q

Plutonic rock

A

Intrusive

19
Q

-Formed under great pressure at high temperature
-There is presence of volatile

A

Plutonic

20
Q

Extrusive rock

A

Volcanic

21
Q

Solidifies under low pressure and in absence of volatiles

A

Volcanic / extrusive

22
Q

-spongey
- develop due to the exsolution and entrapment of gas bubbles

A

Vesicular structure

23
Q

Deposits of surface water subsequently fills up vesicles

A

Amygdaloidal

24
Q

Numerous parallel polygonal prismatic columns bundheld together

A

Columnar structure

25
Q

Made up of numerous number of sheets because of the development of nearly horizontal cracks

A

Sheet structure

26
Q

Appears as a pile of numerous overlapping pillows or cracks

A

Pillow structure

27
Q

Small discordant pluton

A

Stock

28
Q

The discordant is more than 100sq km

A

Batholith

29
Q

Tabular body cutting across bedding

A

Dikes

30
Q

Concordant tabular body

A

Sills

31
Q

Blister shaped sill

A

Laccolith

32
Q

-cylindrical shaped body
-magma is highly viscous

A

Bysmalith

33
Q

Saucer shaped concordant body
Flat top and convex bottom

A

Lopolith

34
Q

Thick sedimentary are folded then the empty spaces are occupied by magma

A

Phacolith

35
Q

A rock formed out of volcanic dust

A

Tufg

36
Q

Rock fragments that are thrown out during the eruption

A

Pyroclasts

37
Q

Smaller framents of pyroclast

A

Lapilli

GEOLOGY (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions