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October 2020
World’s Largest Earthquake Drill-Shake Out
In the past 25 years, scientists have learned that strong earthquakes in the central Mississippi Valley are not freak events but have occurred repeatedly in the geologic past. The area of major earthquake activity also has frequent minor shocks and is known as the New Madrid Seismic Zone. The NMSZ is made up of several thrust faults that stretch from Marked Tree, Arkansas to Cairo, Illinois. Earthquakes in the central or eastern United States effect much larger areas than earthquakes…
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