ENV100Y5 Lecture Notes - Lecture 24: Parent Material, Regolith, Weathering
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ENV100Y5 Full Course Notes
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Document Summary
Causes and consequences of soil erosion and degradation. Peat soils formed over 8000 years; up to 6m thick. Carbon balance in peat: primary production stores carbon, decomposition releases carbon. Interdisciplinary research project studying the influence of climate on carbon balance (and vice versa) Bacteria, algae, earthworms, insects, mammals, amphibians, reptiles. Parent material = base geologic material of soil. Bedrock = continuous mass of solid rock (the earth"s crust) Lunar regolith (footprint of astronaut on moon) matter broken down. Weathering = processes that break down rocks. Physical (mechanical) = no chemical changes in parent material. Chemical = substances chemically interact with parent material. Biological = organisms break down parent material. Pressure release (broken up pieces released like picture below) Biological weathering (ex when lichens break down rocks or tree roots breaking down into rocks both of these have pictures in slides)
