Monday, April 14, 2008

Grand Canyon's 55-million-year-old secret


An ancient river may have laid the canyon's foundation.New dating of the canyon's Upper Granite Gorge suggests that this older, 1,000-metre-deep gorge may have been a rough template for the eastern third of the Grand Canyon.

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1 comment:

  1. AEGEASApril 14, 2008 at 11:43 AM

    You began the Blog by saying "ancient" Of cores that word applies to where i am living.Just a thought of cores.

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