Well, you can't comb the hair on a bowling-ball - if everything is
moving, at least one convergence and one divergence are inevitable.
But I believe conventional wisdom says the Pacific Ocean is the scar
left by a really big collision which ripped out the Moon.  Frivolously 
I might suggest that the continents are just trying to slump into that 
hole.  Problem: I believe conventional wisdom also says that Pangaea 
has converged and split up more than once.
Anton Sherwood   *\\*   +1 415 267 0685   *\\*   DASher@netcom.com