lesson 5 Mass movements
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Last updated 8:12 PM on 4/3/25
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8 Terms
1
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Causes
Steep slope
Water (weight/lubrication)
Texture of material
Initial impetus (triggering event)
2
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Types of movement
Slow (soil creep)
Fast (avalanches)
Dry (rock creep/talus creep)
Fluid (mudflows)
3
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Slumps
a chunk of the earth moves down but stays mostly in tact
4
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slides
Excess fluid but consisting of solid material
5
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Critical Angle
the angle where slopes become unstable (35)
6
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Scree/talus
pile of rocks formed at base fo cliff
7
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Causes
Gravity
Slope angle
Pore pressure (water pressure)
8
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Slope failure
reduction in resistance
increase in stress
Note 
Flashcards (150)