Mass Movement Flashcards
1
Q
What is the nature of mass movement dependant upon?
A
- height of slope/angle
- grain size of sediment
- temperature / saturation
2
Q
What are mass movements?
A
Rapid sudden failures of the slope or effects of processes that develop over time
3
Q
When does a landslide occur?
A
On cliffs made from softer rocks which slips as a result of failure when lubricated (heavy rainfall)
4
Q
When do rock falls occur?
A
From cliffs undercut by sea
5
Q
What causes mudflows?
A
Heavy periods of rain
6
Q
When are cliffs subject to slumping?
A
When softer materials overlie more resistant materials
7
Q
Where do slumping particular occur?
A
Where glacial deposits form the coastal areas
8
Q
When does soil creep occur?
A
Where there is very slow but continuous movement of soil particles downslope
