Creationists teach that a gigantic surge of water carved out the Grand Canyon, in a short period of time, from a vast mud deposit which subsequently hardened into layers of stone. This argument does not hold up because:
(1) The Grand Canyon is immense; it is inconceivable that all that material could be removed in a short period of time.
(2) Recently exposed mud deposits have essentially no vertical stability; a trench more than 5 feet deep must be shored to keep it from collapsing. The Grand Canyon is a mile deep and has vertical walls of over a thousand feet in height.
(3) The Grand Canyon formation is cut down into an almost horizontal plateau. How could a surge of water on a horizontal surface attain the velocity to remove all that material? Answer: it could not; it would simply spread out over the plateau.
(4) There is no way that a huge deposit of mud could be transformed into the existing system of dozens of different kinds of rock strata extending in a consistent sequence over hundreds of square miles.
http://www.chem.tufts.edu/science/FrankSteiger/flood.htm
#4 is important in that if the Grand Canyon was “cut while it was still wet (mud deposited by Noah’s Flood?), and probably in a week or two”, you wouldn’t expect to see the many different types of rock strata and you also can’t explain why some types of animal and plant fossilization, long extinct are found in lower strata and not in the higher and why some types of animal and plant fossilization of more recent life is not found in the lower strata if all this took place over the course of a week or two.
You should read through your own post and see how absurd and unrealistic each of your assertions is.
Having considerable experience with water running over recently placed earth embankments, it is obvious that they are a perfect microcosm of the creation of the Grand Canyon. The size of the area is irrelevent, since the amount of water was proportional. The “hardening into stone” is the same issue the world over, and is due to the fact that all of the deposited material was dissolved in hot water loaded with carbonates, the world over, and by cooling and drying it would inevitably become some form of calcareous stone.
Water gushing over a sedimentary plateau does not simply spread out. It never does. It quickly cuts numerous gouges in completely random fashion, just like the Grand Canyon. There really is no other way it could have formed. Were it already solidified, it would be nothing but deep, narrow gouges, like the gouge cut into the bottom of the Grand canyon, long after it had solidified.
>> “The Grand Canyon is a mile deep and has vertical walls of over a thousand feet in height.” <<
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Nowhere in the canyon does that condition exist.
All of the walls of the canyon are in typical repose for rapidly erroded sedimentary mud.