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Nature 435, 1037-1039 (23 June 2005) | doi:10.1038/4351037a; Published online 22 June 2005

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Earth science:  New Madrid in motion

Martitia P. Tuttle1

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A new network of geodetic field stations has greatly improved monitoring of relative motion across a seismic zone in the central United States. It seems that rapid deformation is occurring across this fault system.

The New Madrid seismic zone lies 50–200 km from Memphis, Tennessee, and was the site of devastating earthquakes in 1811 and 1812. These earthquakes included three mainshocks and many aftershocks, with the largest earthquake having an estimated1, 2 magnitude of 7.

  1. Martitia P. Tuttle is at M. Tuttle & Associates, 128 Tibbetts Lane, Georgetown, Maine 04548, USA.
    Email: mptuttle@earthlink.net

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