The Vishnu Schist, lying at the bottom of Inner Gorge, is said to be up to 2 billion years old. Now, the deepest point of the Grand Canyon is approximately 6,000ft or 1800m. Now, according to my limited understanding of geology, greater depth implies greater age, no? But, doing the math (and this is also assuming the Vishnu Schist is at the bottom of the Grand Canyon, as it may very well not be), this essentially means that every 1.8 micro metres is a year!
Not being a scientist, and not qualified to really answer this but, doesn't this assume that the Grand Canyon has been flowing for 2 billion years? Wouldn't that be a mistake?
Actually I just looked it up.
Geology of the Grand Canyon area - Wikipedia
But the canyon did not start to form until 5.3 million years ago when the Gulf of California opened up and thus lowered the river's base level (its lowest point) from that of large inland lakes to sea level.
You are associating two different things in your statement. The depth of the Grand Canyon is not relevent to carbon dating.
{ABE} Also the age of the rocks at the bottom of the canyon have nothing to do with the age of the canyon itself.
Edited by riVeRraT, : No reason given.
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