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24: Series 5
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The Charleston Earthquake of 1886 was the largest quake to hit the Southeastern United States.It occurred at 9:50 PM on August 31, 1886. The earthquake caused severe damage in Charleston, South Carolina, damaging 2,000 buildings and causing million worth in damages, while in the whole city the buildings were only valued at approximately million. Between 60 and 110 lives were lost.Major damage occurred as far away as Tybee Island, Georgia (over 60 miles away) and structural damage was reported several hundred miles from Charleston (including central Alabama, central Ohio, eastern Kentucky, southern Virginia, and western West Virginia). It was felt as far away as Boston to the North, Chicago and Milwaukee to the Northwest, as far West as New Orleans, as far South as Cuba, and as far East as Bermuda.
 Damage from Charleston earthquake of August 31, 1886
The earthquake is estimated to be between 6.6 and 7.3 on the Richter scale with an Modified Mercalli Intensity Scale of X. Sandblows were common throughout the affected area due to liquefaction of the soil. More than 300 aftershocks of the 1886 earthquake occurred within thirty-five years. Minor earthquake activity that still continues in the area today may be a continuation of aftershocks. Very little to no historical earthquake activity occurred in the Charleston area prior to the 1886 event, which is unusual for any seismic area. This may have contributed to the severity of the tremor.The 1886 earthquake is a heavily studied example of an intraplate earthquake. The earthquake is thought to have occurred on faults formed during a Jurassic-aged rifting process during the break-up of Pangea. Similar faults are found along the east coast of North America. |
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