12/10/2012 1 Mass Movements • Mass movement : the downslope transportation of large masses of earth materials by gravity. • Erosion : the removal and transport of materials by natural agents such as wind and running water All pictures and information, unless otherwise cited, borrowed with permission from Dr. Steve Dutch, UWGB. http://www.youtube.com/watch?v=mknStAMia0Q Landslides • Landslide : the rapid movement of a mass of bedrock or loose soil and rock down the slope of a hill, mountain, or cliff. • Talus : cliff rock fragments that have been weathered from a cliff and pulled down by gravity. More Landslide Videos http://www.youtube.com/watch?v=H6Ma0SVjMHA http://www.youtube.com/watch?v=qEbYpts0Onw Types of Landslides • Creep • Slump • Earthflow • Mudflow • Slow • Medium • Fast • Very fast Creep Soil Creep, California