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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]
1968 Illinois earthquake; Isoseismal map; Seismic intensity scales; Seismic magnitude scales; Wikipedia:Graphics Lab/Image workshop/Archive/Jun 2009; Wikipedia:Recent additions/2009/October; File talk:1968 Illinois earthquake.svg; Category talk:Geography; Portal:Geography/Did you know; Portal:Geography/Did you know/2; Portal:Illinois/Selected ...
The following is a list of earthquakes in Illinois. Earthquakes. Date Area ... 1968: 5 km (3.1 mi) SSW of ... Miscellaneous Field Studies Map 1143. United States ...
Isoseismal map for the 1968 Illinois earthquake. In seismology, an isoseismal map is used to show countour lines of equally felt seismic intensity, generally measured on the Modified Mercalli scale. Such maps help to identify earthquake epicenters, particularly where no instrumental records exist, such as for historical earthquakes.
Our region is north of the New Madrid seismic zone, which had three of the largest earthquakes in U.S. history in the winter of 1811-12.
Isoseismal map of the earthquake (I–III are instrumental to slight, IV is moderate, V is rather strong, VI is strong, VII is very strong) The 1968 Illinois earthquake was the largest recorded earthquake in the "Prairie State", measuring 5.4 on the Richter scale. Although there were no fatalities, the earthquake caused considerable structural ...
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 ...
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