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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 magnitude followed in January and February 1812.
An undated photo from the US Geological Survey depicts a landslide trench and ridge in the Chickasaw Bluffs, east of Reelfoot Lake, Tennessee, resulting from the 1811 to 1812 New Madrid earthquakes.
The New Madrid seismic zone (NMSZ), sometimes called the New Madrid fault line (or fault zone or fault system), 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.
An 1800 map shows a 'Redfoot River' in the area near the Lake, a possible misspelling of the name from Henry Rutherford's 1785 survey. From Low's Encyclopaedia. According to the United States Geological Survey, Reelfoot Lake was formed in northwestern Tennessee when the region subsided during the 1811–12 New Madrid earthquakes, which were centered around New Madrid, Missouri. [2]
Geologists estimate that similar New Madrid Seismic Zone earthquakes like the ones in 1811 and 1812 have a 7–10% chance of reoccurring within the next 50 years.
Starnes said it's because that area is close to the New Madrid ... Rocky Mountains and in the winter of 1811-1812 produced earthquakes estimated to be of 7 or 8 magnitudes. ... See photo. What ...
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This area of the Mississippi River, from just east at "Island Number Ten" around to the town of New Madrid, Missouri, was the site of a Civil War battle from February 28 to April 8, 1862, the Battle of Island Number Ten. Due to its highly productive soil in the river's floodplain, Kentucky Bend was developed as a major cotton-producing area ...