Major seismic zone in the southern and midwestern United States
Reelfoot Rift and the New Madrid Seismic Zone in a 3D topographic image
Magnetic potential map of the Reelfoot Rift
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.
The New Madrid fault system was responsible for the 1811–12 New Madrid earthquakes and has the potential to produce large earthquakes in the future. Since 1812, frequent smaller earthquakes have been recorded in the area.[1]
Earthquakes that occur in the New Madrid Seismic Zone potentially threaten parts of seven American states: Illinois, Missouri, Arkansas, Kentucky, Tennessee, and to a lesser extent Mississippi and Indiana.[2]
^"Center for Earthquake Research and Information at the University of Memphis". University of Memphis.
^Stelzer, C. D. (December 15, 1999). "On Shaky Ground". Riverfront Times. Retrieved October 16, 2017.
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the most active zones in the Southeastern United States, frequently producing low-magnitude earthquakes. The NewMadridSeismicZone in the northwestern...
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especially when a large event occurs in a seismically quiet area; see, for example, the NewMadridSeismicZone, where events still follow Omori's law from...
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