1. Soil Formation is controlled by...
1.1. Rock in the source area
1.2. Temperature & amount of rain
1.3. Biological Activity
2. Weathering
2.1. Physical
2.1.1. Wedging
2.1.2. Unloading
2.2. Chemical
2.2.1. Dissolution
2.2.1.1. Acid rain
2.2.2. Hydrolysis
2.2.2.1. Feldspar reacts with Water
2.2.3. Oxidation
2.2.3.1. Rust
2.3. Biological
2.3.1. Macroscopic
2.3.2. Microscopic
3. Components of Earth contained in soil
3.1. Geosphere
3.1.1. Regolith
3.2. Hydrosphere
3.2.1. Water
3.2.1.1. Hydrologic Cycle
3.2.1.1.1. Transportation
3.2.1.1.2. Evaporation
3.2.1.1.3. Sublimation
3.2.1.1.4. Transpiration
3.2.1.1.5. Precipitation
3.3. Atmosphere
3.3.1. Air
3.3.2. Parts
3.3.2.1. Lower Bound
3.3.2.2. Upper Bound
3.3.3. Composition
3.3.3.1. 78% Nitrogen
3.3.3.2. 21% Oxygen
3.3.3.3. 1% Others
3.3.3.4. Trace Amounts
3.3.4. 4 Thermal Layers
3.3.4.1. Troposphere
3.3.4.1.1. Weather System
3.3.4.2. Stratosphere
3.3.4.2.1. Ozone layer
3.3.4.3. Mesosphere
3.3.4.4. Thermosphere
3.4. Biosphere
3.4.1. Organic Material
4. Soil Profile
4.1. Organic Activity
4.2. Leaching and Precipitation
4.3. Transport of Clays
5. Layers
5.1. O - Organic debris, dead leaves/plants&animals
5.2. A - Topsoil
5.3. E - Subsurface
5.4. B - Leached ions from A are precipitated here
5.5. C - lowest layer; soil parent material
6. Soil Erosion
6.1. controlled by...
6.1.1. amount and frequency of rainfall
6.1.2. wind velocity
6.1.3. character of the soil
6.1.4. vegetation cover
6.1.5. slope of land surface
6.1.5.1. Mass Wasting
6.1.5.1.1. Landslides/Slope Failure
6.2. example of features
6.2.1. rain can dislodge soil particles
6.2.2. water carves channels in a plowed field
6.2.3. Wind Erosion
6.2.4. Dust Storm