GEOG 120 Lecture Notes - Lecture 21: Ecological Pyramid, Regolith, Clay Minerals
Document Summary
I apologize if anything is missing or incomplete, he spoke especially fast today. Components - mineral matter. Soil water soil is present above the bedrock and regolith, it is the thin skin of the landscape. Process is called pedogenesis. Interaction of five main factors: Parent material (geological factor) Climate (most powerful provides heat and moisture, controls what kinds of vegetation can grow in a location) Biological activity (defines whether dirt or soil) Time (chronologic factor having the right things in the right place for long enough) Formed by weathering of bedrock. Loose sediment transported and deposited. By geomorphine processes // Chemical, physical and biological processes. Transport of materials up and down. Structure, grain size, chemistry, minerals, colour, etc. Differentiation within parent material. Horizons (differentiation of layers and properties within a soil as a result of the processes occurring) Direct deposition of material. Adds material to soil body. Seeping water dissolves materials and moves them to other locations.
