Formation of the Grand Canyon 5 to 6 million years ago through integration of older palaeocanyons
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author: L. Sue Beard Richard A. Young Shari A. Kelley Laura J. Crossey Jason W. Ricketts Karl E. Karlstrom |
| Publication date | January 26, 2014 |
| Language | English |
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| Missing/wrong data? | Edit Wikidata item |