erosion and mass movement
DESCRIPTION
Erosion and Mass Movement. Erosion: the movement or transport of weathered rock and soil. Deposition: the laying down or depositing of weathered rock and soil. Mass movement: the movement of rock or soil downhill. Mass movement is caused by gravity. - PowerPoint PPT PresentationTRANSCRIPT
Erosion and Mass Movement
Erosion: the movement or transport of weathered rock and soil.
Deposition: the laying down or depositing of weathered rock and soil.
Mass movement: the movement of rock or soil downhill.◦Mass movement is caused by gravity.
4 Types of Mass Movement1. Landslide: mass of rock or soil moving downhill fast.◦Usually dry◦Talus: the debris at the base of a slope.
2. Mudflow: the movement of rock or soil saturated with water moving downhill quickly.◦Can be as much as 60% water.
3. Slump: mass of rock or soil slips down a slope.◦Material moves in one large mass
4. Creep: mass of rock or soil moving downhill very slowly.◦You can’t see creep happen, only evidence of it.