140 7/27/57 - Wolfgang Kletz showed C. Bean around area. Coll. 7/27/57/1 - Uddenites zone w. side geologist's Campus saddle. Coll. 7/27/57/2 - Float, nearby "22, section 4, see page 35 Coll. 7/27/57/3 - see page 52; bed 15, section 6. Coll. 7/27/57/4 - Uddenites zone (bioherm locality) NE of windmill on main reef. James Robert (Robby) Moore, Tex. Co. Research Lab., Houston, Tex. mentioned many of the oil company fellows find the Niles in the Wexler [illegible] (Texas) part is equivalent in age to the Wolfcamp in the type area and eastward. Also that the Brachiopods and the Foraminifera may indicate different ages in comparison to other areas. Robby gave me a couple of samples from Reed Shafter, Tex. He believed Perm. age. They contain orbituloida and a couple of mollusca of undoubted upper K age, probably Georgetow 141 Why they on the cyclic bedding in the upper Wolfcamp is as follows at the present times: 1) Drainage of wolfcampian Basin to N. Deposits of gray sand siltstone & a few siltstones gradually filling edges of basin, but beyond "gray" facies. 2) Bichemical activity encroached on this more or less flat bottom "mud" flat from west (to south) in a northward direction. This accumulating until wave action takes over control. 3) The wave action sorts and worked the later deposits of the biochemical deposits to reduce grain size, increase relative % of quartz & form laminar bedding in upper sand or so. Bypass was important and represents a significant time of lost record. Repeat back to condition 1. S. gaptant N. upper wolfcamp Uddenites shale There is more to this than just this simple diagram - The east west facies change leaves room for more questions than I have answers at this time.