News From the Field
Grand Canyon As Old As the Dinosaurs, Suggests New Study Led by CU-Boulder
November 29, 2012
An analysis of mineral grains from the bottom of the western Grand Canyon indicates it was largely carved out by about 70 million years ago--a time when dinosaurs were around and may have even peeked over the rim, says a study led by the University of Colorado Boulder.
University of Colorado at Boulder
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