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31 December, 03:55

How long did it take for the grand canyon to form?

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  1. 31 December, 04:10
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    Beginning about 17 million years ago, the mountain range that fed the ancient northeast river system was destroyed by faulting, as the Basin and Range was created southwest of Grand Canyon.
  2. 31 December, 04:19
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    Answer:around 17 million years ago
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