New Madrid Seismic Zone

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Map showing the extent of perceived shaking from the New Madrid earthquakes of 1811-1812 in the central United States. Concentric colored zones indicate areas of extreme, violent, severe, very strong, strong, and moderate shaking, radiating outward from the epicenters near New Madrid, Missouri. An inset highlights the epicenter locations along the Mississippi River near New Madrid, with nearby cities such as Memphis and Cairo also marked. Major cities and state boundaries are included for refere

New Madrid Seismic Zone: Media

geological feature, United States

Images

Map showing the extent of perceived shaking from the New Madrid earthquakes of 1811-1812 in the central United States. Concentric colored zones indicate areas of extreme, violent, severe, very strong, strong, and moderate shaking, radiating outward from the epicenters near New Madrid, Missouri. An inset highlights the epicenter locations along the Mississippi River near New Madrid, with nearby cities such as Memphis and Cairo also marked. Major cities and state boundaries are included for refere

New Madrid earthquakes of 1811–12

The earthquakes were some of the largest in U.S. history.

Encyclopædia Britannica, Inc./Kenny Chmielewski

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