Unit 4 Lesson 3

Question 1

Deformation

Answer 1

the process by which rocks change shape when under stress

Question 2

Folding

Folds

Answer 2

occurs when rock layers bend under stress

The bends in rock layers

Question 3

Fault, and Fault Block

Answer 3

the crack that forms when large blocks of rock break and move past each other
3 types of faults:
Strike-slip faults - the fault blocks move past each other horizontally
Normal faults - the hanging wall moves down relative to the footwall
Reverse faults - the hanging wall moves up relative to the footwall Reverse

The blocks of rock on either side of the fault

Question 4

Shear Stress

Answer 4

the stress that pushes rocks in parallel but opposite directions.
It causes strike-slip faults to form

Question 5

Tension

Answer 5

the stress that stretches or pulls rocks apart.
Causes normal faults to form

Question 6

Compression

Answer 6

the stress that squeezes or pushes rock together.
Causes reverse faults to form

Question 7

Syncline

Answer 7

The youngest layers of rock are found at the core and the oldest layers are on the outside of the fold
Usually look like a bowl ( arched upward)

Question 8

Anticline

Answer 8

The oldest layers of rock are found at the core. The youngest layers on the outside of the fold
Arched downward and high in the middle

Question 9

Fault plane

Footwall

Hanging wall

Answer 9

The location where 2 fault blocks meet

The block below the fault plane

The block above the fault plane