Intended for the introductory-level college course, the principal aim of this text is to present the student with a broad overview of environmental geology. The text looks both at how the earth developed into its present condition and where matters seem to be moving for the future. It is hoped that this knowledge will provide the student with a useful foundation for discussing and evaluating specific environmental issues, as well as for developing ideas about how the problems should be solved.
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KEY TERMS AND CONCEPTS
SECTION TWO Internal Processes
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activity aquifer areas asthenosphere atoms basalt basin beach building carbon cause chapter chemical climate coal coastal continental continents crust crystals damage deposits earth earthquake earthquake prediction elements energy epicenter erosion eruption estimated example fault zone figure flood flow formed fuels glaciers global ground water hazards heat igneous rock increase kilometers Lake land landslides lava layer lithosphere magma magnetic magnitude major material melt metamorphic metamorphic rocks meters million minerals Mount St move National natural occur ocean oxygen Photograph courtesy plants plate boundaries plate tectonics population problems processes properties pyroclastic quake region relatively result rise River rock cycle runoff San Andreas fault sand seafloor seafloor spreading sediment sedimentary rocks seismic silicates slide slope soil Source spreading ridges stream stress structures subduction zone surface surface runoff temperatures tion tsunamis U.S. Geological Survey United USGS Photo Library volcanoes waves weathering wind