-170- Section 17 Measured from the top of the intrusion up the south side of Hill 5816, Hess ranch horst, to a point about three-quarters of the way to the summit. Top of measured sequence Thickness (feet) Lenoxhills Formation 18. Limestone, dark gray to light brown weathering, dolomitic, 2 foot beds, coll. 17-18, Schwagerina tersa, Triticites joensis (reworked) . . . . . . . . more than 12 17. Dolostone, brown-gray weathering, 6 inch to 1 foot beds, granular texture, silty throughout, fossil molds common, chert pebbles common in upper portion . . . . 40 16. Sandstone, brown weathering, 6 inch to 2 foot beds, a few chert pebbles, well sorted, medium to fine grained quartz sand . . . . . . . . . . . . . . . . . . . . . 20 15. Conglomerate, like unit 13, but in 2 to 3 foot beds, upper portion is dominantly gray quartz sandstone, coll. 17-15 (upper part), Parafusulina linearis, Schwagerina nelsoni, S. diversiformis, Pseudoschwagerina tumidosus, P. texana? . . 18