[White-water] Grand Canyon Is "Frankenstein" of Geologic Formations

[Jack Doyle]

Grand Canyon Is "Frankenstein" of Geologic
Formations<http://science.slashdot.org/story/14/01/27/0258258/grand-canyon-is-frankenstein-of-geologic-formations>

Posted by timothy <http://www.monkey.org/%7Etimothy/> on Sunday January 26,
2014 @10:54PM

 sciencehabit writes "It's a debate that has vexed scientists for decades:
Is the Grand Canyon young or old, geologically speaking? Both, a new study
declares<http://news.sciencemag.org/earth/2014/01/grand-canyon-frankenstein>.
A group of scientists reports that the famed formation is a hybrid of five
different gorges of various ages--two of three middle segments formed
between 70 million and 50 million years ago and between 25 million and 15
million years ago, but the two end segments were carved in the past 5
million to 6 million years--and the Colorado River only tied them into a
single continuous canyon 5 million or 6 million years ago."

~~~~~~~~~~~~~~~~~
 *"When the going gets weird, the weird turn pro."*
-- Hunter S. Thompson
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