Wow - That is incredible. I've been spending most of the morning trying to find various maps and such via Ravells suggestion. Then when I check back in here, boom!

The explanations of how X affects Y is what intrigues me the most, I just have no foundation in this type of stuff to suss it out for myself. Though a place like this seems to be a great starting point to get some initial education.

I'm really tickled that a few of the bits came through - while the NE corner isn't from a meteor it was a massive explosion that cratered and fractured the land (death of a god).

The atoll you picked out was based on a volcanic chain in Greece that I thought looked interesting (Santorini).

Thank you very much everyone - I think this will give me a running head start for this weekend's work!