Oily, You of all peoples should know that the Kangan is on a higher horizon than Edgina. Lag gravels, by definition are concentrated erosion's over Billions of years from the surrounding higher structures/outcrops.There's Conglomerate Gold across the Kagan. No doubt about that. I've personally observed it being extracted on several occasions.However, I doubt there's much, if anything in Lag/Swales gravels. If any it will be limited to the West flank only. Dr Q H won't be there, other than for his compliant look see for at least the next Five years.
