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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 following is a list of earthquakes in Illinois. Earthquakes. Date Area Epicenter ... New Madrid seismic zone; Sandwich Fault Zone; Wabash Valley seismic zone;
This list covers all faults and fault-systems that are either geologically important [clarification needed] or connected to prominent seismic activity. [clarification needed] It is not intended to list every notable fault, but only major fault zones.
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 Sandwich Fault Zone is a fault zone that runs northwest from Oswego to Ogle County, transecting Lee County in Northern Illinois.The fault has generally not been active, although a minor earthquake was reported in 2002 and 2010. [1]
Southern Illinois sits upon the verging point of two major fault systems, the New Madrid seismic zone and the Wabash Valley seismic zone. In the 1970s after the 5.4 Richter magnitude scale 1968 Illinois earthquake , scientists realized that there was an unknown fault under Saline County, just north of Eldorado, Illinois .
A Magnitude 5.2 quake took place in the Wabash zone [1] on April 18, 2008 at 09:37 UTC (04:37 CDT), about 41 miles NNW of Evansville, Indiana, near the community of Bellmont, Illinois. [2] It was felt all across southern Illinois, southern Indiana, western and central Kentucky and eastern Missouri, waking people up in Chicago and St. Louis ...
Globally most fault zones are located on divergent plate boundaries on oceanic crust. This means that they are located around mid-ocean ridges and trend perpendicular to them. The term fracture zone is used almost exclusively for features on oceanic crust; similar structures on continental crust are instead termed transform or strike slip faults.