If Amasia hasn't arrived yet, when was Columbia?

zbeckabee

Columbia (also known as Nuna and, more recently, Hudsonland or Hudsonia) is the name of one of the Earth's earliest posited supercontinents, which existed approximately 1.8 to 1.5 billion years (Ga) ago in the Paleoproterozoic Era. Amasia is a possible future supercontinent that could be formed by the merger of Asia and North America. http://en.wikipedia.org/wiki/Columbia_%28supercontinent%29 http://en.wikipedia.org/wiki/Amasia_%28continent%29 Nov 10 07, 8:15 PM

Baloo55th

Yay! Pangaea was the last one which split into what we have now - North America still travelling away from Europe (leaving the very north of Scotland behind) and heading for Asia, and India still heading north at a heck of a speed (comparatively, of course). Supercontinents are not nice places to be. If they are solid lumps, the interiors will br drier than Central Asia is now, and the hurricane scene will be even worse than now - so much of the coast won't be very pleasant either. (Source: New Scientist. See also 'Supercontinent: 10 billion years in the life of our planet', Ted Nield, publ Granta.) Nov 11 07, 12:28 PM