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The New Madrid Seismic Zone (NMSZ) (/ ˈ m æ d r ɪ d /), 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.
Learn about the history, geology, and hazards of the New Madrid seismic zone, where the largest earthquakes in the eastern U.S. occurred in 1811-1812. See maps, images, and sources of the faults, liquefaction, and landslides associated with the zone.
Computer Simulation of a Magnitude 7.7 Earthquake in the New Madrid Seismic Zone. This animation shows the simulated ground motion of the Earth’s surface that could occur in the central U.S. region for a magnitude 7.7 strike-slip earthquake on the southern section of the New Madrid seismic zone.
Learn about the history, geology, and risk of major earthquakes in the New Madrid seismic zone, which extends from southeastern Missouri to the Ohio River valley. Find out why scientists are concerned about a future destructive earthquake and how to prepare for it.
The New Madrid Seismic Zone is the most active seismic area in the eastern U.S., with a history of major earthquakes in 1811-1812 and 1843. Learn about the fault system, the seismic hazard analysis, the geographic impact and the damages caused by earthquakes in this region.
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.
New Madrid fault and earthquake-prone region considered at high risk today. The 1811–1812 New Madrid earthquakes ( / ˈmædrɪd /) were a series of intense intraplate earthquakes beginning with an initial earthquake of moment magnitude 7.2–8.2 on December 16, 1811, followed by a moment magnitude 7.4 aftershock on the same day.
