Geography, 07.03.2020 02:50 asims13

How fast did the Colorado River incise down into the Grand Canyon between 4.8 and 1.2 million years ago (or over a 3.6 million year period)? The answer should be in centimeters per century and be calculated for both Point Sublime on the North Rim and an unnamed point on the South Rim. Select the best (closest to what you calculate) answer.

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How fast did the Colorado River incise down into the Grand Canyon between 4.8 and 1.2 million years...