chapter_01_lec modified - Introducing Geology and an...

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Introducing Geology and an Overview of Important Concepts Physical Geology 11/e, Chapter 1 Steve Kadel, Glendale Community College
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Geology in Today’s World Geology - The science that pursues an understanding of the planet Earth Physical Geology is the study of Earth’s materials, changes of the surface and interior of the Earth, and the forces that cause those changes Practical Aspects of Geology Natural resources Geological hazards Environmental protection
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Practical Aspects of Geology Natural Resources All manufactured objects depend on Earth’s resources Localized concentrations of useful geological resources are mined or extracted If it can’t be grown, it must be mined Most resources are limited in quantity and non- renewable
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Resource Extraction and Environmental Protection Mining; coal, metals, nonmetals Careless mining can release acids into groundwater Petroleum Resources Removal, transportation and waste disposal can damage the environment Dwindling resources can encourage disregard for ecological damage caused by extraction activities Alaska pipeline
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Geologic Hazards Landslides, floods, and wave erosion Earthquakes Shaking can damage buildings and break utility lines causing fires and loss of services; large undersea quakes may generate tsunamis Volcanoes Ash flows and mudflows can overwhelm populated areas
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Geologic Hazards Earthquakes Shaking can damage buildings and break utility lines; large undersea quakes may generate tsunamis Volcanoes Ash flows and mudflows can overwhelm populated areas Landslides, floods, and wave erosion
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Geologic Hazards Earthquakes Shaking can damage buildings and break utility lines; large undersea quakes may generate tsunamis Volcanoes Ash flows and mudflows can overwhelm populated areas Landslides, floods, and wave erosion
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