Older than we thought?

Controversial new evidence, collected with a dating system that measures the cooling of rock in the Earth’s crust, suggests the Grand Canyon is much older than the 6 million years or so that geologists have long assumed. Read the article. According to the new study:

Controversial new evidence suggests the Grand Canyon is much older than six million years.
Sources: Rebecca Flowers of the University of Colorado; Caltech. Bonnie Berkowitz and Gene Thorp - The Washington Post. Published on November 29, 2012, 8:13 p.m.
 
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