Science Fair Project Encyclopedia
Columbia (supercontinent)
Columbia (or Hudsonland) is the name of the supercontinent which existed approximately 1.8 - 1.5 billion years ago in the Paleoproterozoic Era. It probably consisted of Laurentia, Baltica, Ukraine, Amazonia, Australia, and possibly Siberia, North China and Kalahari as well.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details


