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  1. Learn about the history, geology, and seismicity of the New Madrid seismic zone, the most seismically active area east of the Rocky Mountains. See maps of earthquake epicenters, faults, liquefaction, and sand blows.

  2. The New Madrid Seismic Zone (NMSZ) ( / ˈmædrɪd / ), sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate earthquakes (earthquakes within a tectonic plate) in the Southern and Midwestern United States, stretching to the southwest from New Madrid, Missouri .

  3. Learn about the history, geology, and risk of earthquakes in the New Madrid seismic zone, the most seismically active area of the eastern United States. See a map of earthquakes greater than magnitude 2.5 since 1972 and the USGS assessment of the hazard.

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  5. New Madrid earthquakes of 1811–12. New Madrid Seismic Zone (NMSZ), region of poorly understood, deep-seated faults in Earth’s crust that zigzag southwest-northeast through Arkansas, Missouri, Tennessee, and Kentucky, U.S. Lying in the central area of the North American Plate, the seismic zone is about 45 miles (70 km) wide and about 125 ...

  6. A 2004 HAZUS report prepared by FEMA, based on a 7.7 earthquake occurring in the New Madrid Seismic Zone, estimates earthquake damages to be $296 billion dollars across the region and nearly 730,000 people displaced from their homes. In Missouri, the report estimates a direct economic loss of $69 billion dollars and nearly 87,000 damaged buildings.