Weathering, Erosion, Mass Wasting,

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Weathering, Erosion, Mass Wasting, Soil

• How rocks break and spread

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Fractured Rock, the result of weathering
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Differential weathering
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Dyke is more resistant to weathering
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Bryce Canyon
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Weathering occurs below ground too
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Types of weathering

• Mechanical
• No change in chemical composition
• Chemical
• Chemical composition changes

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Weathering due to roots
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More action by roots
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Pressure-release fracturing
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El Capitan in Yosemite NP
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Abrasion (in a river)
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Wind abrasion
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Weathering due to temperature changes
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Sheeting (due to chemical weathering)
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Round rocks due to sheeting
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Oxidation, a type of chemical weathering
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Regolith, the result of weathering
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Mass Wasting mud slide
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Mass Wasting Rock Fall
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Mass Wasting Debris Flow
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Mass Wasting Slump
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Mass Wasting on Mars
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Earth Flow
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Creep
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Solifluction
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Lahar
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Lahar caused by Mt. Saint Helen
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Avalanche
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Sea cliffs
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Gros Ventre Slide
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Soil consists of

• Mineral matter
• Organic matter (humus)
• Air
• Water

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Litter humus
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Soil Horizon
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Soil Horizon
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Soil Pyramid
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World Distribution of Soils
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Arctic and tropical soils are poor
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Mid-Latitude Soils are good