Ch21_Outline

Ch21_Outline - Chapter 21 Energy and Mineral Resources...

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1 Chapter 21 Energy and Mineral Resources Renewable and nonrenewable resources ± Renewable resources Can be replenished over relatively short time spans Examples include Plants Animals for food Trees for lumber Renewable and nonrenewable resources ± Nonrenewable resources Significant deposits take millions of years to form Examples Fuels (coal, oil, natural gas) Metals (iron, copper, uranium, gold) ± Some resources, such as groundwater, can go in either category depending on how they are used
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2 U.S. energy consumption in 2001 Figure 21.4 Coal ± Coal Formed mostly from plant material Along with oil and natural gas, coal is commonly called a fossil fuel The major fuel used in power plants to generate electricity Problems with coal use include environmental damage from mining and air pollution Coal fields of the United States Figure 21.5
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3 Oil and natural gas ± Oil and natural gas Oil and natural gas, consisting of various hydrocarbon compounds, are found in similar environments Derived from the remains of marine plants and animals Formation is complex and not completely understood Oil and natural gas ± Oil and natural gas A geologic environment that allows for economically significant amounts of oil and gas to accumulate underground is termed an oil trap Common oil and natural gas traps include anticlinal traps, fault traps, and stratigraphic traps Common oil traps – anticline, fault, salt dome, and stratigraphic Figure 21.7
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4 Oil and natural gas ± Oil and natural gas When the cap rock is punctured by drilling,
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Ch21_Outline - Chapter 21 Energy and Mineral Resources...

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