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Mass Wasting

MW Controls

Dry soil Saturated soil

Water

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Angle of Repose

Classification ofMass Wastingis based on...

Type of material

Type of Motion

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Rate of Movement

Types ofMass Wasting

Rockfall

Head

Toe

Surface of rupture

Slump block

Scarp

Slump

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Rockslide

The Gross Ventre Slide

occurred in 1925, when 50 million cubic yards of material slid down along a damp shale layer, forming a dam 70 meters high.

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Mudflow

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Earthflow

Creep Expansion byFreezing & Thawing

orWetting & Drying

Creep

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Strata tilted by creep - Marathon Basin, Brewster Co., Texas.

Hillside Creep

Creep effects trees

Railroad tracks & creep

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Next LectureSurface Water

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