Flood not the Cause of the Grand Canyon -- Not a Biased Opinion

Eh? You haven't dealt with cement much, have you, PH? Why do you suppose you keep freshly poured cement wet, or even covered with wet burlap sacks? To help "dry away the water?" Water is absolutely essential for cement, or for that matter, any non-molten rock I can think of, to solidify to a solid mass.

Possibly, using extremely unusual definitions for "common sense." A wind-eroded quartz sand grain 0.2 mm across its longest diameter and with a density of 2.63 g/cc will still be that size and density after 800,000,000 years underground unless it's been subjected to severe alteration, say, by hot water flowing past. If that had happened, the angularity that the grain acquired while blowing around in its old desert would be smoothed out. If the grain was cemented to its neighbors while in the rock, the cementing minerals would be quite easily distinguished from the grains.Your willful ignorance in this whole topic astounds me, PH. Try reading a book.