December 21, 2025
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1:01Now PlayingThe rate of erosion roughly equals the rate of uplift. Under normal conditions, erosion should cut mountains down as fast as they rise.
Studies suggest 10 to 20 million years to erode most North American mountains down to near sea level.
Which means somewhere in there... the whole process must be accelerated.
When observing sharp, angular overthrust mountains... they look very young.
Something catastrophic created them far faster than gradual processes allow.
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