It is also cut by late Cengrie dikes. I would not be surprised if this old stuff turns out to be Archean. The Cambian quartzite was laid down embedding out in shallow water and thus sand standing of layers is not thick. In places, this quartz- it was folded an on thrust, and Cambrian was a receiver. As this was done before it became a quartzite, the deformation could be due to slipping of the sea bottom. I did not appreciate this conclusion at the time otherwise I would have studied it closer and taken samples. Evidently there are Postergrie sediments of quartzites and jadeite in this vicinity that furnished the pettles for the conglomerate. In other words are here here the Grand Canyon succession in complete development. Got back to the hotel at 5 P.M.