This is an assignment for EDU 290. This PowerPoint gives a basic understanding of types of mass-wasting.

1. Processes of Mass Wasting Janet Koch EDU 290 PowerPoint Presentation

4. Angle of Repose

5. Type of Material (Rock, soil, sediment)

10. Weathering decomposes material and reduces the strength of the slope

12. Vegetation Increases slope stability! Absorb water from rainfall and roots stabilize within soil

13. Criteria for Mass Wasting Type of material… Type of movement… Rate of movement… Rock, debris, soil, mud Fall, slide, slump, flow, creep Fast, slow, not visible

14. Falls Very rapid movement, talus formation, often triggered by earthquakes.

15. Slump Movement along a curved surface, caused by steepening of the slope

16. Flow Slow to rapid movement but often appears to have a plastic movement (Debris-flow vs. Mudflow)

17. Solifluction Common in areas of permafrost, very slow movement when frozen surface melts in summer

18. Creep Slowest flow, visible through features such at tilted trees or telephone poles

19. How do we control masswasting? Improve drainage Ditches, gutters, vegetation, drainpipes Decrease slope Cut and fill, benching Build retaining walls Provide support at the bottom of a slope

20. References Text and Figures Schaetzl, Randy, 2011, Masswasting, Environmental Geomorphology 306 Steinbis, Martin, 20ll, Masswastepdf, Geology 100 Pictures Clip art images