events
The first two in a series of four severe earthquakes occur in the vicinity of New Madrid, Missouri.
Related Wikipedia articles
1811–1812 New Madrid earthquakes
Series of earthquakes during 1811–1812 impacting on Missouri, USA
The 1811–1812 New Madrid earthquakes 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. Two additional earthquakes of similar…Source: Wikipedia (CC BY-SA)
Earthquake
Sudden movement of the Earth's crust
An earthquake – also called a quake, tremor, or temblor – is the shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they cannot be felt, to those violent…Source: Wikipedia (CC BY-SA)
New Madrid seismic zone
Major seismic zone in the southern and midwestern United States
The New Madrid seismic zone (NMSZ), sometimes called the New Madrid fault line, is a major seismic zone and a prolific source of intraplate earthquakes in the Southern and Midwestern United States, stretching to the southwest from New Madrid, Missouri.Source: Wikipedia (CC BY-SA)