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  2. Wabash Valley seismic zone - Wikipedia

    en.wikipedia.org/wiki/Wabash_Valley_Seismic_Zone

    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 ...

  3. New Madrid seismic zone - Wikipedia

    en.wikipedia.org/wiki/New_Madrid_Seismic_Zone

    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.

  4. Sandwich Fault Zone - Wikipedia

    en.wikipedia.org/wiki/Sandwich_Fault_Zone

    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]

  5. List of earthquakes in Illinois - Wikipedia

    en.wikipedia.org/.../List_of_earthquakes_in_Illinois

    Sandwich Fault Zone; Wabash Valley seismic zone ... "Information by Region-Illinois". United States Geological Survey. ... Miscellaneous Field Studies Map 1143 ...

  6. 1968 Illinois earthquake - Wikipedia

    en.wikipedia.org/wiki/1968_Illinois_earthquake

    Map showing the Cottage Grove Fault in green. The quake struck on Saturday, November 9, 1968, at 11:02 a.m. [8] The quake's epicenter was slightly northwest of Broughton in Hamilton County, [9] and close to the Illinois–Indiana border, about 120 miles (190 km) east of St. Louis, Missouri. [10]

  7. Earthquake rattles southwest Illinois, serves as reminder to ...

    www.aol.com/news/earthquake-rattles-southwest...

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  8. Southern Illinois - Wikipedia

    en.wikipedia.org/wiki/Southern_Illinois

    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. This fault is called the ...

  9. What is the Almanor Fault Zone? Geologist explains region ...

    www.aol.com/news/almanor-fault-zone-geologist...

    A map by the California Geological Survey shows faults near the Lake Almanor area in Plumas County, where a magnitude 5.5 earthquake struck Thursday, May 11, 2023, followed by a magnitude 5.2 ...