Not to mention the mother of all earthquakes, the New Madrid fault in Missouri.
Didn't that change the course of the Mississippi River?
New Madrid did some changing of the Mississippi waters, they even ran backwards in some places. But the most spectacular change was the formation of Reelfoot Lake, which I think is 20 miles long and several miles wide. This happened when a Grabben (sp.?) fault occured. That is when two faults separated by some land pull apart and the piece in the middle drops down. The St. Louis area might be due for another big one, although I think some geological research indicated that the really big ones may be 400 to 500 years apart.
Regarding earthquakes in the Atlantic, I think that scientists view the greatest danger as the possibility that a huge chunk of earth might slip off the side of a major volcano in the Canary Islands, or is it the Azores? This would displace a large volume of water causing a tsunami, which was used in a CSI Miami plot a few years ago. At any rate, I am glad my son lives over toward the Everglades and not near the beach.
SunkenCiv: Do you want to post this for the Catastrophism ping list?