Study contends Grand Canyon as old as dinosaurs

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Study contends Grand Canyon as old as dinosaurs

Jake Bacon/Associated Press file photo

A new study published Thursday in the journal Science suggests the western Grand Canyon formed 70 million years ago. Some scientists disagree and believe the canyon was mainly carved by the Colorado River in the past 5 to 6 million years.

Study contends Grand Canyon as old as dinosaurs

Jake Bacon/Associated Press file photo

A new study published Thursday in the journal Science suggests the western Grand Canyon formed 70 million years ago. Some scientists disagree and believe the canyon was mainly carved by the Colorado River in the past 5 to 6 million years.
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