Rock Deformation Flashcards
1
Q
As rocks form, they often change shape or ____ due to plate tectonic activity.
A
Deform
2
Q
Form mountains, trap oil and gas underground and make rocks weaker
A
Structures
3
Q
Outside force on rocks
A
Stress
4
Q
How rocks respond
A
Strain
5
Q
Ductile strain makes:
A
Folds
6
Q
Brittle failure makes:
A
Faults
and earthquakes
7
Q
Some rocks never break and others only break (T/F)
A
True
8
Q
Permanent Strain in Ductile Folds
A
Weak rocks (shale or salt) Deeply buried hot rocks
9
Q
Permanent Strain in Brittle Faults
A
Strong rocks (granite, sandstone) Near-surface cool rocks
10
Q
Rocks stretch to cover a wider space
A
Extension (stress type)
11
Q
Rocks get smashed into a narrower space
A
Compression (stress type)
12
Q
Rocks tear as they slide sideways
A
Shear (stress type)
13
Q
Rifting and Spreading makes…
A
Rocks stretch
14
Q
Collision and Subduction makes…
A
Rocks compact
15
Q
Transform makes..
A
Makes tear
