ENV100Y5 Lecture 41: Mod 4 - Week 1 - Mineral Resources and Mining
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ENV100Y5 Full Course Notes
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Session 37: mineral resources & mining (i) (4-1-16) Earth resources are extracted from the solid earth: earth resources are: nonrenewable on a humanly accessible timescale - mineral. & rock resources - some energy resources (e. g. , fossil fuels, uranium) - soil (sometimes included) - generally excludes living resources (why ?: management approach, conservation, efficiency, 3r"s. Some replenishable resources can become effectively nonrenewable: replenishable resources are, replenishable in principle, but on a long time scale (groundwater, soil, susceptible to mismanagement in practice, critical flow resources - rate of withdrawal > rate of replenishment - Rocks provide the mineral resources we need to conduct our lives: rock = solid aggregation of minerals, tightly compacted or held together by cement-like material or by interlocking grains. Rocks provide the mineral resources we need to conduct our lives: mineral = naturally occurring solid inorganic chemical element or compound with a crystal structure, a specific chemical composition, and distinct physical properties.
