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GY111 Physical Geology Energy and Mineral Resources
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Resources & Reserves Energy & Mineral Resources: educated guesses on remaining deposits Reserves: proven by drilling and/or geophysical prospecting Non-renewable: once used will not be replaced because of long generation cycle (i.e. Petroleum, Coal, Ore Deposits)
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U.S. Energy Consumption Exponential growth of demand matches population growth
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Global Energy Consumption India & China are major consumers of developing countries
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Combustion Combustion oxidizes a chemical compound releasing energy By-products include CO2 and H2O Example: CH4 + 2(O2) = CO2 + 2H2O Example: 2H2 + O2 = 2H2O –Note that the only product is water Unfortunately coal and gasoline have other components (N,S) that produce pollutants (NO2,H2SO4,H2S,etc.) Coal is by far the “dirtiest” fossil fuel, methane the “cleanest”
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Potential Energy Resources Based on educated guesses!
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Global Distribution of Petroleum Resources Middle East Dominates this Resource
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Decline of Petroleum as an Energy Resource US production peaked in 1970’s World production is peaking now (2006)
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Formation of Coal
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U.S. Coal Resources
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Traps for Oil & Gas Resources Various types of traps for oil and natural gas Anticlinal Fault Stratigraphic Salt Dome
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Energy Fact Matrix Proven tech., easy transport Abundant in US, 200 year supply Clean, easy transport Proven tech., very efficient, no pollution, 500 year supply from US reserves Decreasing supply, pollutes Dirty, difficult to transport Decreasing supply Radioactive waste Advantages Disadvantages Petroleum Coal Natural Gas Nuclear
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Detrimental Effects of Fossil Fuel Consumption Disruption of environment from extraction Pollution Climate Change Over consumption of a non-renewable resource
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Climate Change Potential
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Mineral Resources Non-energy mineral resources are critical to modern technology. The U.S. imports the majority of these resources. Mineral resources are generally non- renewable but they are often recyclable.
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Many ore deposits are hydrothermal Ore deposit: can be mined at a profit Mineral deposit: cannot be mined at a profit Ore reserves: accurate assessment of future production Ore resources: rough estimate of future production
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Open-Pit Mining Environmentally destructive Processes large volumes of low-grade ore
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South Africa Mineral Resources By far the richest country in terms of mineral resources Many are in Precambrian shield regions Metallic Deposits: Gold, Platinum, Chrome, Silver, Copper
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Non-Metallic Resources Calcite Gem stones Asbestos
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Exam Review Know definitions of energy reserves, resources, non- renewable, etc. Know ranking of future potential energy resources Know the ranking of the 2015 global energy consumers Be familiar with the various types of combustion reactions and the advantages/disadvantages of each Be familiar with the global distribution of petroleum production Be familiar with the energy fact matrix Know examples of metallic versus non-metallic mineral resources
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