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Generalized geologic map of the central Virginia Piedmont with faults and earthquakes (M>2, 1973–2011). The earthquake's epicenter and most of the aftershocks lie between the surface traces of two structures, the Spotsylvania Fault, a southeast dipping zone of high ductile strain, and the Chopawamsic Fault, a thrust fault. [10]
The U.S. Geological Survey (USGS) reported that a magnitude 5.8 M w earthquake hit Virginia on Tuesday, August 23, 2011, at 17:51:04 UTC (1:51 pm Eastern Daylight Time). The quake occurred at an approximate depth of 3.7 miles and was centered in Louisa County (location at 37.936°N, 77.933°W), 5 miles SSW of Mineral, Virginia and 37 miles NW of Richmond, Virginia's capital. [3]
1979 Imperial Valley earthquake – magnitude 6.4 earthquake with an epicenter less than 1 km inside Mexico – significant damage and injuries on both sides of the border (60 in the US) 2010 Baja California earthquake (Mexico near S California) – magnitude 7.2 earthquake, 4 fatalities and 100 injuries, none in the United States
CENTRAL VIRGINIA — The solar eclipse wasn't the only excitement in Virginia yesterday. According to the U.S. Geological Survey [U.S.G.S.], a 2.1 magnitude earthquake with a depth of 5.0 km ...
The earthquake, 2.92 miles under the surface, was felt by millions from Maine to Virginia. ... Nadine Marron, who said she lives about 3,000 from the earthquakes epicenter in Tewksbury, wonder if ...
A 4.0 magnitude quake could be felt more than 60 miles from its epicenter, the agency said. Will earthquakes happen more frequently? In January, the USGS estimated that nearly 75% of the U.S ...
During an earthquake, seismic waves propagates in all directions from the hypocenter. Seismic shadowing occurs on the opposite side of the Earth from the earthquake epicenter because the planet's liquid outer core refracts the longitudinal or compressional while it absorbs the transverse or shear waves . Outside the seismic shadow zone, both ...
More than 70 people reported feeling the earthquake. A 2.6-magnitude earthquake struck near the North Carolina-Virginia border around 5 a.m. on Tuesday, Oct. 25, the U.S. Geological Survey reports.