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Ch. 11
Mass Wasting
15
Geology
Undergraduate 1
11/20/2012

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Cards

Term
Complex Movements
Definition
combinations of different types of mass movements
Term
Creep
Definition
Slow downslope movement of soil and rock
-Slowest and most widespread
Term
Debris Flow
Definition
Less water, more viscous, move more slowly than mud flows.
Term
Earth Flow
Definition
Move slowly downslope as viscous masses of wet regolith
Term
Mass Wasting
Definition
Downslope movement of material resulting from the force of gravity
Term
Mudflow
Definition
Consist largely of clay and silt-sized particles
-More than 30% water
-Generally follow pre-existing channels
Term
Permafrost
Definition
Frozen ground/soil
Term
Quick Clay
Definition
Clays that spontaneously liquefy and flow when disturbed
Term
Rapid Mass Movement
Definition
Sudden, visible movement
Term
Rock (or block) Slide
Definition
-Take place on a planar surface
-Involve Solid Pieces of rock
Term
Rockfall
Definition
-Free fall of rocks
Term
Shear Strength
Definition
-Forces that help maintain slope stability
Term
Slow Mass Movement
Definition
Movement recognized only by their effects
Term
Slump
Definition
-Rotational slides which material moves along a curved surface
Term
Solifluction
Definition
-Slow downslope movement of water saturated surface sediment
-Most common in areas of permafrost
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