Hiking through the Palaeozoic

For a geoscientist, hiking the Grand Canyon is a trip through two billion years of the past, making on average an impressive 60,000 years back in time for every step. This geologic showpiece, the greatest gorge on Earth, has been carved out by the Colorado River in a mere five million years.
This article appeared in Vol. 1, No. 2 - 2004


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