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Geology.com
Material about geology and earth sciences, including maps and discussions of a wide variety of topics (such as meteor impact craters, rebuilding New Orleans, and waterfalls of the United States). Also includes a dictionary, an overview of geologic time, a mineral identification chart, materials for each state, and links to sites with geology jobs, geology news, and related material. Note: Includes some commercial matter. From a geology professor at Mansfield University, Pennsylvania.
http://geology.com

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