Regarding the Barchan experiment...
The whole experiment as mentioned in the PRL article, was to simulate wind-formed Barchan dunes. They could not do it using sand, so they came up with the idea of glass beads.
The only underwater 'Barchan' type formations of any significant size, that I am aware of, are in the form of gravel 'dunes'...not sand.
An Indepth Analysis of Barchan formations
I am fully aware of that and said so in my post. The simple fact though, is that water did it. Under the right conditions we have seen two instances of water producing steeper angles in the cross bedding. And there are more.
I will join into the track debate after I have presented this evidence, but slot canyon formation
will connect also to the tracks.
Namely to show in a cataclysmic model
, that the water was not calm and the sand was not always level, so parts of it would have mounted above the rapidly moving, rising water.
The sandstone strata in the southwest U.S. record plenty of turbidity in the water. Many slot canyons are within a close proximity of the GC, making a catastrophic drainage model
easy to see.12Rounded areas
--Slot canyon formation is not attributed to wind by scientists but water. The second picture is probably a drainage hole like formation. PLEASE KNOW I UNDERSTAND THIS IS NOT DEPOSITIONAL EVIDENCE BUT EROSIONAL EVIDENCE FOR A CATACLYSMIC MODEL. The next point will connect to depositional evidence.Vertical foliation
--It is said that sandstone is not foliated, because it is sedimentary. It is my contention that it can foliate, as these layers were not laid vertically. The second and third pictures have vertical and horizontal foliation beside each other.
There is no syncline or anticline here, so tectonic movement
would be a silly explanation for the vertical and winding layers in the formation. Heat and pressure
couldn't cause this formation, or we would no longer have sandstone. Water is the only explanation.
Lastly, you have massive oxidation in the sand, and large boulders in the the deserts of the southwest. All a sign of alot of water when we put it together.
Therefore it my contention that all of this happened within a short period of time. There is no way slow eolian deposition can explain the vertical and horizontal layering can happen within feet of each other. The reason is this not strata but foliation, which is a chemical process in lithification. Therefore the sand was laid first and then the "layering" took place.
After the flood, there are lakes left around the GC area. An earthquake or earthquakes could have caused catastrophic outburst floods to cut through the partially lithified sediments, causing the canyon.