<p>shinywing,
There are many parts of the U.S. subject to earthquakes. A very strong quake was one which went down part of the Mississippi River. It is not discussed often because at the time that part of the country was sparsely populated.</p>
<p>On the eastern seaboard there was an earthquake that nearly destroyed Charleston, SC. It was so severe churchbells rang in Atlanta from the tremors. The east coast is not free of earthquakes.</p>
<p>There is a large fault that goes right through the city of Memphis, Tenn.</p>