Mass Movement

The several types of "Landslides"

Creep

Fall

Slide or slump

Flows

Controls on the Angle of Repose

Strength of rock (frictional)

Water

Planes of weakness

Earthquakes and volcanoes

Excavation

Vegetation

Prediction and Prevention

Study bedrock, fractures, groundwater.

Past mass movements: deposits, scars, tilted-broken stuff, and dating

Avoidance is impossible (insurance doesn’t cover)

Vegetation, terrain modification, bolts, retaining walls