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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.
The capital city of Arkansas, Little Rock, would also face damage. [4] A major natural gas pipeline is located near the fault, and could be devastated by any such earthquake. [1] Tennessee and Mississippi would possibly be affected as well. [6] In 2006, a letter to the Seismological Research Letters indicated the possible existence of a fault ...
San Andreas Fault System (Banning fault, Mission Creek fault, South Pass fault, San Jacinto fault, Elsinore fault) 1300: California, United States: Dextral strike-slip: Active: 1906 San Francisco (M7.7 to 8.25), 1989 Loma Prieta (M6.9) San Ramón Fault: Chile: Thrust fault: Sawtooth Fault: Idaho, United States: Normal fault: Seattle Fault ...
The New Madrid Fault Zone (NMFZ) Archived December 19, 2008, at the Wayback Machine (links to maps, history, predictions, etc. from the Arkansas Center for Earthquake Education) Steamboat Adventure: The New Madrid Earthquakes (dozens of contemporary accounts of the earthquake, provided by Hanover College)
On January 21, 2009, the director of the Arkansas Earthquake Center at the University of Arkansas announced the discovery of a major fault line near Marianna which could generate a 7.0 earthquake in the future. The fault is close to, but appears to be separate from, the nearby New Madrid Seismic Zone. [18]
Locations of quakes magnitude 2.5 or greater in the Wabash Valley (upper right) and New Madrid (lower left) Seismic Zones. The Wabash Valley seismic zone (also known as the Wabash Valley fault system or fault zone) is a tectonic region located in the Midwestern United States, centered on the valley of the lower Wabash River, along the state line between southeastern Illinois and southwestern ...
The Guy–Greenbrier earthquake swarm occurred in central Arkansas beginning in August 2010. [2] The epicenters of earthquakes in the swarm showed a linear distribution, with a clear overall shift in activity towards the southwest with time, [3] and the largest event in the swarm was the 2011 Arkansas earthquake, at 4.7 on the moment magnitude scale.
Other regional faults such as the Washita Valley fault which runs parallel to the Meers fault may also be capable of causing earthquakes. [59] Earthquake hazard map published in 2014. The USGS national hazard map states that the Meers fault has a recurrence interval of 4,500 years [48] but estimates range from 100,000 years to 1,300 years. [15]