Mass movement Flashcards
1
Q
Mass movement
A
The movement of rock and soil downhill due to gravitational pull
2
Q
Types of mass movement
A
Landslide Rockfall Mudflow Rotational slip Soil creep
3
Q
What effect does weathering have on mass movement?
A
Weakens top of cliff
Erosion weakens foot of cliff
Makes mass movement ocur
4
Q
Landslide
A
Rapid movement of detached slabs of rock down a slide plane
5
Q
Rockfall
A
Individual rock fragments fall off a cliff face
Often due to freeze thaw
6
Q
Mudflow
A
Saturated soil flows down hill
Often triggered by heavy rainfall
7
Q
Rotational slip
A
Common coastal landslips in weak rocks
Eg. sand, clay
Curved slide plane
8
Q
Soil creep
A
Very slow downhill
Movement of individual rock particles
