The point here is that there is much that we don't yet know about tectonism on the ocean floors, and current interpretations may be just as capable of "jumping around" as transformed faults might be. There's an old geologist saying, "If I hadn't known what I was looking for, I wouldn't have found it." It is hoped that some marine geoscientists will look through the existing data on the North Atlantic Sea floor in the vicinity of the Sargasso Sea to see if there is any evidence for a land mass that foundered after breaking up as well as for a volcanic upheaval that helped cause this cataclysm.
The famous marine geologist, F.P. Shepard, argued that, "something in the nature of faulting accounts for the bulk of continental slopes", and he noted that "south of Cape Hatteras there is a radical change in the character of the continental slope. One or more broad steps are found leading down to the deep ocean floor. Also, the base of the continental slope is no longer bordered by a continental rise. Instead, the steep slope beyond the terraces ends in a trough. From the latitude of South Carolina to the Bahamas there is one principal terrace, called the Blake Plateau...It has long been known that this plateau had little if any sediment cover. Outside the plateau there is an abrupt drop with a slope described as 50 percent in some profiles."
This description of the ocean floor lying to the west sounds like a step-faulted continental shelf, bounding the western margin of a large down-dropped area that is now the deep Atlantic ocean floor.