Why is there only one canyon? Why isn’t there one in Maine or North Carolina? The Grand Canyon is there because of a large pluton of molten granite that resides beneath the Colorado Plateau. It is lighter than the surrounding host rock so it slowly rises because of buoyancy. As it rises, the river cuts downward.
Yeah on Camelback it’s called a unconformity and happens when a newer layer of sediment deposits on an older rock formations, nothing to stop the whole mess from being thrust up into a mountain later on. And sandstone doesn’t need to come from seabed sand, desert sand is just the same.
And St. Helens is a volcano...it’s made of ash and pumice. I’m sure there are parts you can literally blast a water hose at it and make a small valley not to mention what a 400 mph pyroclastic flow can do. How the hell do you compare that to schist of the Grand Canyon?
And Velikovsky was a raving lunatic. The fact that he believed that the planets are changing their orbits all willy nilly was the least of his issues.
I spend a few minutes searching for Spirit Valley that you mention. I can only find a Spirit Valley in Duluth Minnisota. I have read of a recent canyon carved out by a flood that resembles Grand Canyon in the carving through the layers of earth and rock.I would like to find out more.
The conditions (temperature and turbidity) posited for the conditions of the flood waters that are used to account for fossilization and geological formations are incompatible with modern aquatic life having survived in that water.