NASC 130 Essentials3_ch12

Mineral resources sources of energy energy from

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Unformatted text preview: heat Earth’s internal (geothermal) energy has two sources Residual heat from planet formation Residual Heat from radioactivity Heat Geothermal energy drives Geothermal tectonic plates Heat lost through the Heat crust can be harnessed crust Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Oil and Gas Industrial society depends Industrial on oil and natural gas on Oil and gas are Oil hydrocarbons hydrocarbons Complex organic Complex molecules molecules Made of hydrogen and Made carbon carbon From once-living matter Many hydrocarbon types Found as complex Found mixtures mixtures Pure compounds Pure separated by refining separated Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Oil and Gas Genesis Oil and gas hail from plankton and marine algae Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Oil and Gas Genesis Burial to depths of 2 to 4 km heats the black shale Heating breaks the organics down into waxy kerogen Heating kerogen Kerogen-rich source rocks are called oil shales Continued heating breaks Continued down kerogen down Oil and gas form in Oil specific T ranges specific Oil and gas – 90o to 160oC to Gas only – 160o to 250oC Graphite – >250oC Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Hydrocarbon Sy...
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