mass movements landslides - weebly
TRANSCRIPT
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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
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Creep
http://www.ndsu.edu/fargo_geology/mass_wasting/slumptypes.htm
Slump
Earthflow--Small
http://www.dcnr.state.pa.us/topogeo/hazards/earthflow.aspx
Earthflow--Moderate
http://www.ngdc.noaa.gov/seg/hazard/icons/small_res/6/6_132.jpg
Earthflow--Severe
http://www.bigbendpaleo.com/Photo%20Gallery/Geology-Paleontology/Mass%20Wasting/Village%20Creek%20-
%20Jefferson%20County,%20Texas%20-%20Earthflow%20Destroys%20House%20-%20Fall%201998.jpg
Mudflow
http://wrgis.wr.usgs.gov/docs/parks/deva/galflood.html
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Yungay, Peru, May 31, 1970