24 terms

Physical Geography: Soils

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Soil Properties
Color, Texture, Structure, pH, Porosity, Moisture
Soil Structures
Platy, Blocky, Prismatic, Crumb/Granular, or Columnar
Bedrock begins to desintegrate
1st step of soil development
Organic materials facilitate disintegration
2nd step of soil development
Horizons form
3rd step of soil development
Developed soil support thick vegetation
4th step of soil development
1st primary soil-forming factor
Geologic
Climatic
2nd primary soil-forming factor
3rd primary soil-forming factor
Topographic
Biological
4th primary soil-forming factor
5th primary soil-forming factor
Time
6th primary soil-forming factor
Human
Soil profile order
O, A, E, B, C, R
Soil
Minerals and organic material that support plants
Humus
Mixture of organic debris and soils
O Horizon
Layer of organic material in a soil pedon
Peat
Partially decayed organic material
Porosity
Total volume of available pore space in soil
Permeability
Ability of water to flow through a material
Slickenside
Surfaces of crack in soils with swelling clays
Lime
Calcium oxides used to neutralize acidic soils
Eluviation
Downward removal pf particles and minerals in a soil
Illuviation
Downward movement and deposition of particles and minerals in a soil.
Soil Pedon
A unit of soil analyzed by pedologists
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