Actually, if there is some Flood Model, you should be able to use it to explain what is seen. Again, I am willing to step through what is really there and let you show how the Flood Model can explain it.Aslan is not a Tame Lion
Re: The decrepitude of both upper and lower blocks of strata
Erosion removed the weathered material....How do you know that?
It couldn't be any other way. Very small weathered material has been carried away by wind and water. Larger material is still there at the base of the cliff face where it accumulates as minor scree or talus but is eventually weathered itself into smaller particles and is carried away, or perhaps becomes part of the ground.
Have you considered other ways the material might have been removed like geologists taking samples away or tourists taking mementos away or pixie dust?