A canyon in six days

“Most people are taught that Grand Canyon formed as the Colorado River eroded the landscape over tens of millions of years. The fact that the same results could be accomplished with a lot of water over a short time is generally not mentioned. Observations of canyon formation in modern times suggest that Grand Canyon may have formed much as did a small canyon near Walla Walla, Washington—a lot of water over a short time. During an unusually wet period, a small irrigation ditch was used to divert some excess water. As the water passed through the ditch, it became a gully, then a gulch, then a canyon, 1,500 feet long and 120 feet deep. This all happened in six days, not millions of years. The similar formation of the Toutle River canyon near Mount St. Helens offers another example that is analogous to what would have happened as the floodwaters receded in the days of Noah.” Evolution Exposed, Second Ed., A canyon in six days! Morris.

Response to comment [from a Catholic]:  "...[S]udden rush..."

Uniformitarians say that most canyons were formed from little water over long periods of time.  Catastrophims says canyons were formed from a lot of water over a short period of time.  Canyons near Mount St. Helens as well as the scablands of eastern Washington provide evidence of canyon formation in a matter of days.  A canyon in six days! Morris.

Response to comment [from a Catholic]:  "Yep. Grand Canyon, for example. Rock eroded a little at a time."

You think the dinkly Colorado river carved out the Grand Canyon?

"...[Y]es, given the observed rate of erosion, it can account for the Grand Canyon."

You have more faith in the Colorado River than I do.

How are polystrate fossil, like upright trees, explained if each of the layers surrounding the fossil takes long periods of time to form?  Wouldn't the wood rot away before it was covered?

A canyon in six days