Sorry, I thought the topic was the age of the Earth?irrelevant to the topic,,,True enough but not an answer to my questions.according to the geography the land was already there when the water cut through it,,,I presume you're talking about how long it took the river to carve out the canyon? How long did it take for the rocks of the canyon to be deposited, solidified and lifted a mile above sea level?the grand canyon maybe took a few days at the most to form ,,,So, take a look a the Grand Canyon, and then tell me how long it took that to happen
but if I had to answer I would say its evident from the outcome the sediment was deposited before the breech happened and had yet to solidify,,,
Are you saying that the river cut through loose sediments that later became solid rock?