What on Earth is Plate Tectonics?

United States Department of the Interior, United States Geological Survey

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This web site was put together by the U.S.G.S. (United States Geological Survey) and the N.P.S. (National Park Service) and provides an overview of plate tectonics. It begins by explaining about the Earth's core, mantle, and crust. It then discusses the crustal plates and the types of plate boundaries (convergent, divergent and transform). The lesson ends with paleogeographic reconstructions of plate distributions from the past 650 million years.

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Grade Level: College Lower (13-14), High School (9-12), Middle (6-8)