Comment on “Apatite 4He/3He and (U-Th)/He Evidence for an Ancient Grand Canyon”

Science
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Abstract

Flowers and Farley (Reports, 21 December 2012, p. 1616; published online 29 November 2012) propose that the Grand Canyon is 70 million years old. Starkly contrasting models for the age of the Grand Canyon—70 versus 6 million years—can be reconciled by a shallow paleocanyon that was carved in the eastern Grand Canyon 25 to 15 million years ago (Ma), negating the proposed 70 Ma and 55 Ma paleocanyons. Cooling models and geologic data are most consistent with a 5 to 6 Ma age for western Grand Canyon and Marble Canyon.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Comment on “Apatite 4He/3He and (U-Th)/He Evidence for an Ancient Grand Canyon”
Series title Science
DOI 10.1126/science.1233982
Volume 340
Issue 6129
Year Published 2013
Language English
Publisher Science
Contributing office(s) Central Mineral and Environmental Resources Science Center
Description Article 143; 3 p.
First page 143
Last page 143