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Plate Tectonics (202 words) |
 | All animations built from maps used with the permission of C.R. Scotese, PALEOMAP Project. |
| There are a number of excellent sites dealing with the modern theory of plate tectonics. |
| The Paleomap project at the University of Texas at Arlington. |
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Understanding plate motions [This Dynamic Earth, USGS] (2502 words) |
| Plate boundary zones -- broad belts in which boundaries are not well defined and the effects of plate interaction are unclear. |
| Even though the Nazca Plate as a whole is sinking smoothly and continuously into the trench, the deepest part of the subducting plate breaks into smaller pieces that become locked in place for long periods of time before suddenly moving to generate large earthquakes. |
| Land on the west side of the fault zone (on the Pacific Plate) is moving in a northwesterly direction relative to the land on the east side of the fault zone (on the North American Plate). |
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