slevesque writes:
Add on to that the fact that when we observe present-day sand waves, they can easily have an angle of 25degrees (with in some situation 30 degrees)
Just a moment...
Your reference is locked behind a paydoor. If you provide more information perhaps it can be found elsewhere.
Coupled with the fact that sand dunes produce an angle of 34degrees, not 25, and I am befuddled by the fact you still cling on to any of this because of your unpublished back-yard experiment.
Now I'm getting confused. Weren't you arguing that fossil sand dunes found in places like the Coconino Sandstone layer of the Grand Canyon were actually formed underwater? And isn't the angle of sand dunes in that layer up to 34 degrees? And aren't you arguing that submerged sand dunes can only have angles up to 30 degrees? Doesn't that rule out a submerged origin for the Coconino layer?
--Percy