Your comment reminds me of Genesis 10:25. Here discussing the sons of Shem; And unto Eber were born two sons:the name of one was Peleg; for in his days was the earth divided... To me this sounded like it had to be a major event. Whatever Peleg means in the tongue of the day it had to do with this event. When science talks of continental drift I always thought of this verse and that perhaps it was no gradual occurance. Never heard anyone expound upon this verse though.
Yeah I noticed that a while back and tried to figure out what it meant and couldn't come up with anything. It's definitely a verse to keep in mind though as we learn more and more about the geologic history of the earth. Maybe it will become clear. It wouldn't have been long after Noah.
I will say this though: If what I saw in an article was correct, if you were to take a rubber ball and outline the globe on it and then take a razor knife and cut out the continents, you could just about make a sphere out of those continents, in other words they would fit together into a much smaller sphere. I can't imagine the processes for this to happen so I haven't thought too much about it. It also may be something to remember though.