[bagman]

The Grand Canyon is too old to use carbon dating which isn't good much past 50,000 or 100,000 years ago.

[Strategerist]

The Grand Canyon is too old to use carbon dating which isn't good much past 50,000 or 100,000 years ago.

It's always amazing how people that mock geologic dating are totally unaware of anything in existence besides Carbon dating.

[Nahanni]

memo to bagman: A quote from the article is as follows... their findings using a technique called uranium-lead isotope to date mineral deposits in caves from nine sites in the canyon's walls. Reading is FUNdamental.