The only layer that is a problem is the cross bedded sandstone because the angle of repose supposedly means it had to have been aerially deposited.
Faith, you have your angle of repose kit. I have the FedEx receipt of delivery.
Do the experiment for yourself, already!
"The Christian church, in its attitude toward science, shows the mind of a more or less enlightened man of the Thirteenth Century. It no longer believes that the earth is flat, but it is still convinced that prayer can cure after medicine fails." H L Mencken