Mass Movement Flashcards
1
Q
What is mass movement?
A
Downward movement of rock and soil due to gravity
2
Q
What is slumping/sliding aka landslides?
A
Land moves down a slope and has a curved surface. Common on clay riverbanks. When it rains, rock becomes saturated therefore weakened and due to gravity it slips down slope.
3
Q
What is soil creep?
A
Slow movement of soil as gravity pulls on water in soil. Leaves slopes with terracettes. Occurs on gentle slopes
4
Q
What is rockfall?
A
Rapid free fall of rock from a steep cliff face. Fallen rocks (build up) form a scree slope.
5
Q
What is mudflow?
A
Occurs after periods of heavy rain where there is not enough vegetation to hold the soil in place.
