7.) Finally, how were the steep walled canyons of the Grand Canyon region carved into the newly deposited, unconsolidated sediments of the Colorado Plateau? As Wise notes, there is an interesting problem here:Conclusion (Evaluating the Noah's Flood Hypothesis)."In the Austin model (1994) the sedimentary rocks of the Grand Canyon were all deposited during the early part of the "flood-year," later to be incised into a canyon by the receding waters. The model requires the newly deposited rocks to become strong enough within a few months after deposition to stand as mile high cliffs in violation of all reasonable calculations from hydrology, soil mechanics, and strength of materials. Some rock types, for example, some limestones, become lithified soon after deposition, but most sandstones and shales require major loss of water, compaction, and/or chemical cement to become a strong rock, processes which involve significant amounts of time. This is especially true for very fine grained muds in which low permeability makes complete dewatering almost impossible in any short period of time. Simple loading of other materials on top will not do; trapped water in the muds would cause sudden liquifaction of the entire mass, a phenomenon known to hydraulic engineers as the 'sudden draw down condition.' Rapid drainage commonly results in collapse of oversteepened cut banks as flood swollen rivers subside. Mudstones in the young Grand Canyon model should have behaved in the same way but would have collapsed even more readily than canal and river banks considering Canyon cliff heights are measured not in meters but more than a thousand meters."
The model requires the newly deposited rocks to become strong enough within a few months after deposition to stand as mile high cliffs in violation of all reasonable calculations from hydrology, soil mechanics, and strength of materials.
Did this person run some tests to prove his theory? I do not believe this person considered the pressures caused by having an oceanload of water on top of the sediments for over a year.
P.S. Man can create oil in a labratory with completely insignificant amounts of time.