A new analysis of the mineral grains from the bottom of the Grand Canyon indicates that it was formed about 70 million years ago, during the late Cretaceous Period, a time when dinosaurs roamed the Earth.
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Grand Canyon Thought to Be 65 Million Years Older Than Previous Estimates
Published December 4, 2012 blogs , science , technology Leave a CommentTags: blogs, dating, Earth Science, geology, science, SciTechDaily, technology
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