A 60-Million-Year Debate on Grand Canyon’s Age

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A 60-Million-Year Debate on Grand Canyon’s Age

Postby ukantic » Thu Nov 29, 2012 7:57 pm

New research on the Grand Canyon's underlying rocks concludes that it is more than 60 million old — more than ten times as old as previously thought.


http://www.nytimes.com/2012/11/30/scien ... versy.html
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