Here is a map of the big continental plates. Look at the line going north and south through Louisiana to the shore:
Now what if that connected to the plate/fault line that goes north to south at the top of South America?
[Magenta line added – ]
Our big size map of events in the Gulf of Mexico that look like a fault line:
CLICK IMAGES FOR FULL SIZE
This is from today’s RSOE map (drawn on):
More on Gulf of Mexico events: