Have you ever read Charles Hapgood's "Paths of the Pole?"
His theory was that the polar ice caps would build to such an extent that centrifugal force could ultimately displace the thin outer crust of the earth out of position by miles at a time - causing all sorts of destruction in the process.
I actually have it somewhere downloaded on one of my machines.
Antarctica is the continent with the highest average elevation on Earth. Something like 3 miles, IIRC.
And it’s not rock - fixed to bedrock. It is ice. Ice that under the right circumstances, could be persuaded to move somewhere. Like into the ocean basins.
Great flood, anyone?
Surf’s up!!
And do you know who wrote the intro to that book?
Some hack named Bert or something who came up with a theory about relatives...
;-)