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New Madrid Seismic Zone

New Madrid Seismic Zone. Type of Plate Boundary. North American plate and North Atlantic. Plate Boundary. The New Madrid fault is a divergent boundary. The fault is a strike-slip fault. Features of Plate Boundary.

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New Madrid Seismic Zone

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  1. New Madrid Seismic Zone Type of Plate Boundary

  2. North American plate and North Atlantic

  3. Plate Boundary • The New Madrid fault is a divergent boundary. The fault is a strike-slip fault.

  4. Features of Plate Boundary • 150-mile Fault line in the Midwest area. Covers five states. Most of the activity is 5-15 miles beneath the surface. Makes a rift valley.

  5. Major Tectonic Events • 1812, a magnitude of 8.0 earthquake struck. December 16, 1811, a 7.2–8.2 epicenter in northeast Arkansas; it caused only slight damage.

  6. Impact at the Plate Boundary • GPS measurements indicated that the faults were moving at no more than 0.2 millimeters a year. New Madrid system may be "shutting down" and that tectonic stress may now be accumulating elsewhere.

  7. Sources • http://www.showme.net/~fkeller/quake/maps.htm • http://quake.ualr.edu/public/nmfz.htm

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