1. Classroom presentations to accompany Understanding Earth, 3rd edition prepared by Peter Copeland and William Dupré University of Houston Chapter 11 Mass Wasting

3. Influences on mass movement Nature of slope materialsNature of slope materials Amount of waterAmount of water Angle of slopeAngle of slope

4. Classification of Mass Movements: Table 11.2

5. Fig. 11.1a Angle of Repose- Effect of Grain Size

6. Fig. 11.1b Angle of Repose- Effect of Moisture Content

7. Surface Tension Fig. 11.2

8. Fig. 11.3 UnsaturatedSoil SaturatedSoil

9. Fig. 11.4 How do they do that? Kelly Mooney Photography/Corbis

10. Fig. 11.5 Fire increases the susceptibility for erosion and mass movement Grant Meyer

11. Weathered Shale Fig. 11.6 Martin Miller

12. Landslide Induced by Poor Construction Techniques

13. Fig. 11.7

14. Landslide Near Anchorage, Alaska, Caused by the 1964 Earthquake Fig. 11.7

15. Factors that Influence Mass Movements: Table 11.1

16. Classification of mass movements RockfallRockfall RockslideRockslide Rock avalancheRock avalanche CreepCreep EarthflowEarthflow Debris flowDebris flow MudflowMudflow Debris avalancheDebris avalanche SlumpSlump Debris slideDebris slide SolifluctionSolifluction

17. Rockfalls E.R. Degginger Fig. 11.8

18. Rockslide Fig. 11.9 Jeff Foott/DRK

19. Rock avalanche Brian Vikander/Corbis Fig. 11.10

20. Soil Creep Fig. 11.11

21. Soil Creep

22. Fig. 11.12 Earthflow Steve McCutcheon/Visuals Unlimited

23. Debris flow Fig. 11.13 E. R. Degginger

24. Mudflow Fig. 11.14 Vlastimir Shone/Gamma

25. Debris avalanche Fig. 11.15 Russ Davies/The Image Bank

26. Slump E. R. Degginger Fig. 11.16

27. Debris slide Michael Collier Fig. 11.17

28. Solifluction Fig. 11.18

29. Solifluction Fig. 11.18 Fletcher & Baylis

30. Gros Ventre Landslide A.J. Copley/Visuals Unlimited

31. Causes of slides Heavy rain or snowfallHeavy rain or snowfall ExcavationExcavation EarthquakesEarthquakes

32. Fig. 11.20 1925 Gros Ventre Slide

33. Evolution of River Valley Dammed by Landslide Fig. 11.21a Before Slide

34. Evolution of River Valley Dammed by Landslide Fig. 11.21b After Slide

35. Evolution of River Valley Dammed by Landslide Fig. 11.21c After Dam is Breached

36. Vaiont Dam Reservoir Landslide Fig. 11.22