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USGS Geology in the Parks

A slice through the Earth

A schematic cross section illustrating plate tectonic processes

This illustration, from This Dynamic Planet: The Story of Plate Tectonics, shows significant plate tectonic processes and landforms. Click on any of the tectonic features to see an enlargement. Click here to see a labeled version of this illustration.
Back arc Convergent plate boundary Spreading center Spreading center Hot spot Image from This Dynamic Planet
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