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The Wabash Valley seismic zone consists largely of vertically oriented ("normal") faults deeply buried under layers of sediment. Although the tectonics of the region are not fully understood and are the subject of ongoing research, these faults are thought by some to be associated with a branch of the New Madrid aulacogen, an old rift zone where the lithosphere actively began to pull apart at ...
Situated in a stable continental region of the Midwestern United States, the Wabash Valley seismic zone (WVSZ) is an area of dispersed seismic activity that encompasses the border areas of Illinois, Indiana, and Kentucky.
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It measured 5.1 on a seismic scale that is based on an isoseismal map or the event's felt area. With moderate damage in the Wabash River Valley, it is currently the strongest earthquake recorded in the U.S. state of Indiana. The earthquake occurred somewhere along a fault within the Wabash Valley seismic zone.
Date Area Epicenter Mag. MMI Depth (km) Deaths Injuries Total damage / notes Source April 18, 2008: 7 km (4.3 mi) NNE of Bellmont, Wabash County: 5.2 M w: VII 14.3 2 Limited / strike-slip (left lateral)
A future earthquake in the region is extremely likely; in 2005, seismologists and geologists estimated a 90% chance of a magnitude 6–7 tremor before 2055, likely originating in the Wabash Valley seismic zone on the Illinois–Indiana border or the New Madrid fault zone.
The Wabash River, shown within its drainage basin. The Wabash Valley is a region located in sections of both Illinois and Indiana.It is named for the Wabash River and, as the name is typically used, spans the middle to the middle-lower portion of the river's valley and is centered at Terre Haute, Indiana.
1940 El Centro (M6.9), 1979 Imperial Valley (M6.4) Ierapetra Fault: 40: Crete: Normal fault: Independence Valley fault system: Nevada, United States: Normal fault: Active: 2008 Wells earthquake (M6.0) Izu–Bonin–Mariana Arc subduction zone >2800: Micronesia: Subduction zone: Active: 1993 Guam (M7.8) Japan Trench: 1400: Off the coast of ...