A 1.8 billion yr old Supercontinent, before Pangea proposed.

Posted by Mike Kremer on Mar 29, 2002 at 10:42

By Dr David Whitehouse
BBC News Online science editor

An ancient supercontinent, far older than anything ever proposed before, has been pieced together by an international team of geologists.
The giant landmass, which has been dubbed Columbia, would have spread across the face of the Earth more than one and a half billion years ago.

The theory is that it then fragmented into smaller pieces before reassembling into another super continent called Rodinia; and, later still, a huge landmass scientists now refer to as Pangea.

Picture & Story

Two, yes two supercontinents before Pangea.
It certainly makes you realise how old the Earth is

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