Earthquake rattles South Carolina

Feb 14, 2014 | Posted by: roboblogger | Full story: WVEC-TV Norfolk

A small earthquake has hit in South Carolina, startling residents and shaking homes both in South Carolina and across the border in Georgia.

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Toronto, Canada

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#1
Feb 14, 2014
 
Don in Hollister

Salinas, CA

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#2
Feb 25, 2014
 
Hi All. Is there a large quake in South Carolina's future? The answer to that question is yes.

In 1886 the area of Charleston, Carolina was struck by an 7.3M (est.) quake. From the pictures of a road and some railroad tracks that I have seen of the quake it appears to have been a right lateral slip strike.

The quake that occurred in the area of Edgefield appears to have been almost a pure thrust quake. This occurs when the first motion is up. A normal quake is a quake where the first motion is down.

The problem with thrust faults and normal faults is that they can't be seen at the surface. This is why they are called "blind faults". If the quake that occurs on one of them is large enough it can rupture the surface. Most of the time we learn of their location when a moderate to strong quake occurs and then viewing the aftershocks.

The biggest problem with most towns and cities along the east coast and Midwest is that the buildings have not been built with earthquakes in mind. This is why a magnitude 6.0+ quake could do a lot of damage to buildings in the Midwest and eastern parts of the U.S. The saving Grace here is that quakes of 6.0M and larger are far and few between. Take Care...Don

http://earthquake.usgs.gov/earthquakes/eventp...

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