ENV 1301 Lecture Notes - Lecture 13: Manganese Nodule, Scale-Invariant Feature Transform, Mountaintop Removal Mining
7 Apr 2016
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Document Summary
People face other natural hazards: floods, coastal erosion, wildfire, tornadoes, hurricanes. We worsen the impacts of natural hazards. Thoughtful use of technology, engineering, and policy: earthquake-resistant buildings, early warning systems, conserving coastal forests, reefs, marshes, better forestry and mining practices, zoning regulations and building codes, mitigating climate change. Geologic processes and catastrophes influence the distribution of rocks and minerals. We depend on a wide variety of minerals for products and technologies. Metal: an element that is lustrous, opaque, malleable, and can conduct heat and electricity. Ore: a mineral or grouping of mineral from which we can extract metals. Economically valuable metals include copper, iron, gold, lead, aluminum. Minerals are non-renewable, so we need to conserve them and mitigate environmental and social impacts of mining. Nonmetallic minerals include sand, gravel, phosphates, limestone, gemstones: people in developing countries often suffer war and exploitation because. Strip mining: layers of surface soil and rock are removed to expose the mineral resource, overburden.
