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16612547
types of mass movement
Description
geography
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junior certificate
Mind Map by
Laura O' Sullivan
, updated more than 1 year ago
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Created by
Laura O' Sullivan
about 5 years ago
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Resource summary
types of mass movement
soil creep
slow movement of soil down a slope due to gravity
slowest type of mass movement - 1-2 cm per year
Evidence of soil creep
Trees grow at an angle.
Terracettes form, these are small steps of accumulated soil.
Fences bend.
Walls crack
bog burst
mud flow
fast moving river of rock, soil and water down a slope.
Fast moving. the amount or water and the angle of the slope determine the speed up to 100kmp/h.
Usually happens after periods o heavy rainfall
land slide
avalanche
An avalanche is a rapid movement of snow and ice down a slope.
Small controlled explosions are used in the alps to cause small avalanches, and thereby prevent large avalanches.
lahar
River of mud when ash from a volcano mixes with melting snow.
Example Nevada del Ruiz
23,000 killed
Media attachments
Soil Creep Diagram (binary/octet-stream)
Soil Creep Photo (binary/octet-stream)
Mudflow Photo (binary/octet-stream)
Mudflow Diagram (binary/octet-stream)
Lahar Nevada Del Ruiz (binary/octet-stream)
Lahar Diagram Nev (binary/octet-stream)
Avalanche (binary/octet-stream)
Avalanch Diagram (binary/octet-stream)
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