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Meteor that hit Arizona 56,000 years ago may have built a natural dam in Grand CanyonCutting‑edge dating reveals driftwood high in Grand Canyon caves 55,250 years ago when a meteor’s shock wave blocked and ...
A meteor may have led to the formation of the Grand Canyon, new study says - The study dives into questions surrounding how and when driftwood in Stanton’s Cave in the Grand Canyon got there ...
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