Lost 'mega-escarpment' across ancient USA may explain Grand Canyon's missing billion years
August 19, 2026
August 19, 2026
SOUTHAMPTON, England, Aug. 19 -- The University of Southampton posted the following news:
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Lost 'mega-escarpment' across ancient USA may explain Grand Canyon's missing billion years
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Scientists have found evidence that a colossal cliff stretching thousands of kilometres across ancient North America may have exposed the heart of the Grand Canyon nearly a billion years before it was carved by the Colorado River.
. . .
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Lost 'mega-escarpment' across ancient USA may explain Grand Canyon's missing billion years
*
Scientists have found evidence that a colossal cliff stretching thousands of kilometres across ancient North America may have exposed the heart of the Grand Canyon nearly a billion years before it was carved by the Colorado River.
. . .