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According to the U.S. Geological Survey [U.S.G.S.], a 2.1 magnitude earthquake with a depth of 5.0 km rattled parts of Central Virginia around 10:46 p.m. on Monday, April 8.
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]
Earthquakes which did not affect the United States directly, but caused tsunamis which did: 1960 Valdivia earthquake and tsunami – magnitude 9.5 earthquake, between 2200 and 6000 fatalities, including 61 in Hilo, HI; 2006 Kuril Islands earthquake and tsunami – magnitude 8.3 earthquake, no injuries or fatalities anywhere
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.
In 2011, a 5.8 magnitude earthquake near Mineral, Virginia, shook East Coast residents over a wide swath from Georgia to Maine and even southeastern Canada. The USGS called it one of the most ...
The first, six-level intensity scale was proposed by Egen in 1828 for an earthquake in Rhineland. [4] [5] Robert Mallet coined the term "isoseismal" and produced a map for the 1857 Basilicata earthquake with a three-fold intensity scale and used this and other information to identify the epicentral area (a term he also coined). [6]
Cross-sectional illustration of normal and reverse dip-slip faults. The earthquake occurred in the Virginia seismic zone, located in the Piedmont region. [8] The Virginia Piedmont area was formed originally as part of a zone of repeated continental collisions that created the ancestral Appalachian Mountains, a process that started during the Ordovician period with the Taconic orogeny and ...
About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. A quick guide to how they are measured. ... This was a major factor in why some areas ...