Brainscape's Knowledge GenomeTM

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


See full index

Ce 11 > Lesson 6:Metamorphic Rocks > Flashcards

Lesson 6:Metamorphic Rocks Flashcards

1
Q

This happen due to the rock being in a condition different from
when it was formed – in most cases, this means higher temperatures
and pressures.

A

Metamorphism

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

This rock has the same over-all chemical composition as its parent rock* but may have different minerals and texture.

A

Metamorphic Rock

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

The rock before metamorphism happens.

A

Parent Rock

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

Metamorphic rocks are not normally considered as parent rock even though they can be metamorphosed. Only _________ rocks are considered as parent rocks

A

Igneous and Sedimentary

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

the parent rock of slate and schist

A

Mudstone

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

Controls what kind of metamorphism may take place.

A

Temperature

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

It is a function of temperature

A

Mineral stability

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

What factors causes a temperature change?

A

Pressure change and water availability

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

these are minerals that have the same composition as the mineral it crystallized from but different in crystal structure.

A

Polymorphs

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

Affects the texture of the resulting metamorphic rock.

It may also cause metamorphic rock’s foliation

A

Pressure

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

Facilitates ion transfer and may make metamorphic process go faster.

A

Water

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

Same pressure from all directions (pressure is also

applied in directions perpendicular to the page)

A

Equal confining pressure

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

Pressure from sides is higher than pressure at top and

bottom (pressure is also applied in directions perpendicular to the page)

A

Directed pressure

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

Pressure pushes one side in one direction and the other side in the opposite direction (like when your hands rub each other and the particle is
in between your palms)

A

Shear stress

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

A lot of _____ is needed for metamorphic process to happen

A

time

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

estimates of new mineral growths are around ____every million years.

A

1 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

DIRECTED PRESSURE or SHEAR STRESS is needed in

the environment to form this kind of rock.

A

Foliated Metamorphic Rock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

No directed pressure environment or

environment with little pressure (such as near surface)

A

Non-Foliated Metamorphic Rock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

“layering” or “banding” in metamorphic rocks causing
“sheet-like” structure. Not necessarily seen as physical layers or bands always by the naked eye but show up as weakness planes of the rocks.

A

Foliation

20
Q

These rocks do not show foliation even if they are formed in an environment with directed pressure

A

Quartzite and marble

21
Q

If a rock is squeezed (directed pressure), it may deform and texture will change such that the minerals seem _______ along an axis _______ to the bigger stress/squeeze.

A

elongated, perpendicular

22
Q

It can cause new minerals
to form and their growth will be along the axis perpendicular to the
direction of stress/squeeze.

A

Heat

23
Q

Factors contributing to foliation

A
  • Pressure (may include temperature change)

* Pressure, heat, and formation of new minerals

24
Q

biggest contributor of foliation.

A

Minerals growing and aligning to a certain direction(perpendicular to the biggest stress)

25
Q

Foliated metamorphic rocks can be classified on

A

type of foliated texture it has ,

grade of metamorphism

26
Q

texture of slate rock

A

Slaty

27
Q

texture of phyllite rock

A

Phyllitic

28
Q

texture of Schist rock

A

Schistose

29
Q

texture of Gneiss rock

A

Gneissic

30
Q

From low-grade metamorphism of shale

A

slate rock

31
Q

Property of slate rocks that causes it to break into flat sheets

A

Slaty cleavage

32
Q

Slate rock’s Microscopic clay and mica crystals have grown and aligned perpendicular to the

A

largest stress.

33
Q

Similar to slate but heated to a higher temperature

A

Phyllite

34
Q

Phyllite has larger mica crystals than in slate rocks but still barely visible to the eye as ________

A

sheen on the surface

35
Q

Phyllite rocks form in ______layers

A

wavy / silky / crenulated

36
Q

Created in high enough temperatures forming mica big enough to be seen by the naked eye, possibly with quartz, feldspar, etc. visible.

A

Schist

37
Q

The temperature of schist is in between ____ and ____

A

Phyllite and Gneiss

38
Q

its Minerals have been separated into distinct bands.

Little to no mica (temperature is too high for mica to remain)

A

Gneiss

39
Q

Example of rocks that gneiss metamorphosised from

A

mudstone, sandstone, granite

40
Q

Form in areas where pressure is just confining pressure (same
pressure from all sides) or low-pressure conditions.

A

Non-foliatic metamorphic rocks

41
Q

Non-foliatic metamorphic rocks are not _________ and the heat is coming from _________

A

buried deep enough, a nearby body of magma.

42
Q

metamorphosed limestone

A

Marble

43
Q

metamorphosed sandstone

A

Quartzite

44
Q

metamorphosed fine grained rocks or volcanic rock

A

Hornfels

45
Q

basalt at 150 degree celcius metamorphosis into

A

chlorite schist

46
Q

• A rock that was partially melted and is metamorphosed – that is
containing both igneous and metamorphic rock.

A

Migmatite

Ce 11 (11 decks)

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