New Madrid Seismic Zone
（重定向自New Madrid Fault）
![Reelfoot Rift and the New Madrid Seismic Zone in a 3D topographic imageMagnetic potential map of the Reelfoot Rift](/Images/godic/202501/29/NMSZBig1038.gif")
![](/Images/godic/202501/29/NMSZ_Erdbeben1038.jpg")
![The Great Earthquake at New Madrid. A nineteenth-century woodcut from Devens' Our First Century (1877)](/Images/godic/202501/29/New_Madrid_Erdbeben1038.jpg")
![More than 4000 earthquake reports since 1974](/Images/godic/202501/29/New_Madrid_Seismic_Zone_activity_1974-2011.svg1039.png")
The New Madrid Seismic Zone (pronounced /nuː 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.