A map shows the boundaries between today's tectonic plates, in the middle of the Atlantic Ocean. NOAA Instead, East Coast quakes come from stress that builds up on those ancient fault lines.

The 4.8-magnitude earthquake on the East Coast Friday came from ancient dormant faults. The faults formed when two continents collided about 500 million years ago, creating the Appalachians and ...

Earthquakes are common on the West Coast, with multiple plate boundaries like the San Andreas fault making geologic activity more likely. They are rarer on the East Coast, but they do happen .

Early next week, geologists plan to hunt by air for the fault that triggered the August 2011 earthquake on the East Coast. IE 11 is not supported. For an optimal experience visit our site on ...

So East Coast quakes rattle an area up to 10 times larger than a similar-size West Coast temblor. "They tend to be more bang for the buck as far as shaking goes," said Virginia Tech geology ...

A 4.8 magnitude earthquake hit New Jersey and affected nearby states on Friday morning, leaving people on the East Coast and the ground trembling. The quake was reported around 10:23 a.m. about 5 ...

The earthquake that just shook the East Coast was caused by one of dozens of ancient fault lines that have lain dormant for hundreds of millions of years, top scientists announced on Friday ...