6. Faulting Flashcards
1
Q
What is a normal fault?
A
- tension (stretching)
- divergent plate boundaries
- downward movement of land
2
Q
What is a reverse fault?
A
- compression (shortening)
- convergent plate boundaries
- upward movement of land
3
Q
What is a thrust fault?
A
- Type of reverse fault
- older rocks pushed above younger ones
4
Q
What is a transform fault?
A
- shearing
- passive plate boundaries
- horizontal displacement
5
Q
What are monoclines?
A
- strata are folded under compressions
- tilt upwards vertically and slightly in one direction
- e.g Ben Bulben, Co. Sligo
6
Q
What is doming?
A
- bowl-like structure formed from pressure of rising magma
- denudation breaks younger rocks on top
- e.g Slieve Bloom Mtns, Co. Laois/Offaly
