#Supercontinent illus?
Doug (and Michael & Carl), thanks for the replies on the Supercontinent. That's
the first I'd heard of "Laurasia," or at least I didn't remember if I'd heard
of it before (20 years since my last college geology class–arf). The name's
just not as trippingly mnemonic as "Gondwana."
Also the first I'd heard of more than one supercontinent. You're not talking
about wholly separate continents, I take it, but good ol' Pangea cracking and
re-fusing some times before the final (current) break-up? I'm reminded of ice
on the lake breaking up and refreezing during the winter. I'm also reminded of
what's said about Columbus's "discovery" of the western hemisphere: Sure, there
might've been previous contact, but his was the historically significant one.
The current breakup is the one worth talking about. {grin} Don/Chicago (for
one more week, anyway)