Brainscape's Knowledge GenomeTM

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


See full index

GLGY 209 > Lecture 16 > Flashcards

Lecture 16 Flashcards

1
Q

What is structural geology?

A

Describes rock response to applied force

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

What is force?

A

The push or pull that results in a change in the motion of a physical body of given mass- any body of rock

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

What is stress?

A

Amount of force per unit area. Occur within the crust in every different part

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

What is rock displacement?

A

When the rock changes place

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

What is rock rotation?

A

When the rock changes position

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

What is rock strain?

A

When the rock changes shape-all occur in parallel with the strain

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

What is confining stress?

A

When forces are equal-region of crust is almost motionless (happens in the middle of the continent)

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

What is differential stress?

A

Compression, tension, and shear forces passing next to each other.

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

What is compression?

A

Pushing on the rock

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

What is tension?

A

Stretches on the rock

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

What is shear?

A

Force that is applied in two opposite directions.

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

What are folds?

A

When everything about the rock changes, but cohesion remains unbroken (no breaks in the layers)

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

What are faults?

A

Cohesion is broken when the rock changes

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

What are folds caused by?

A

Ductile deformation- huge pressures that dominate in the deeper portions of crust (but occur everywhere)

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

What are faults caused by?

A

Brittle deformation-dominates at the surface

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

What are the 3 types of folds?

A

Anticlines, synclines, and monoclines.

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

What are anticlines?

A

When the 2 sides of the rock converge upwards (upside down U shape)

18
Q

What are synclines?

A

When the two sides converge downwards (U shape).

19
Q

What are monoclines?

A

One branch converges in a direction

20
Q

Which type of fold needs the least amount of crustal forces?

A

Monoclines

21
Q

What is the hinge?

A

The junction line of the two sides

22
Q

What are the 6 different types of anticlines?

A

Horizontal, plunging, perpendicular, overturned, and recumbent, inclined

23
Q

What is a horizontal anticline?

A

When the hinge is parallel to the ground

24
Q

What is a plunging anticline?

A

Hinge is angled towards the ground

25
Q

What is the axial plane?

A

Thing that unites hinges of successive layers

26
Q

What is a perpendicular anticline?

A

When limbs dip in different directions

27
Q

What is an inclined anticline?

A

Limbs dip in different directions, but at different angles

28
Q

What is an overturned anticline>

A

The axial plane is at an angle. Limb dip in the SAME direction at different angles.

29
Q

What is a recumbent anticline?

A

Axial plane is paraellel. Limbs dip in opposite directions (But opposite from upright and inclined)

30
Q

What are the 2 broad types of faults?

A

Joints-faults without movement

Faults- With movement

31
Q

What is a horizontal fault also known as?

A

Strike-slip-moves sidways

32
Q

What is a vertical fault also known as?

A

Dip-slip fault-one side moves up

33
Q

What are faults that move both horizontally and vertically called?

A

Oblique slip faults

34
Q

What are hanging walls and footwalls?

A

Hanging walls- the block above the fault

Footwalls-the block below the fault

35
Q

What type of fault is the most common in nature?

A

Oblique slip.

36
Q

What are the 3 types of faults?

A

Normal, reverse, and thrust

37
Q

What is a normal fault?

A

Hanging wall is moved down with respect to the footwall

38
Q

What is a reverse fault?

A

Hanging wall is moved up with respect to footwall-creates a zone of compression

39
Q

What type of fault are the rocky mountains?

A

Reverse Fault

40
Q

What is a thrust fault?

A

Tilted faults (exceptional cases). Push from crustal forces happen over long periods.

GLGY 209 (22 decks)

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