Roosevelt Dam Friday April 3-1925 51 [3651] Left Elote at 8:15 A.M. and at 10:15 we are at Brindy Hill in Lake Roosevelt. This hill is 334 feet above the lake, with its strata dipping S.W. 20°, the strike is N. 35° W. The highest li. me of the Kinder- Devonian, with a thickness of at least 100 feet. In the upper 25 feet occur common Bellerophyllum, Meno- phyllum, Leptotrypa type, Issingtonia and Spirifer centromerus. Lee got a few other species (See p. 27). Below the Mississippian is a dolomite series that probably is Upper Devonian. Saw no fossils. Stog- amus reports Cambrian near the lake level. The Devonian is at least 225' thick. Then drove 5 miles to Roosevelt dam, and duped finally down the V-shaped gorge of Salt River to the base of the Apache Cambrian. Here the base is a coarse grained dark red granite. The upper benethaird our- surface is level and now dips like the E 20° S.E. Upon the granite lies 30 feet of canlen engl. It in a boulder bed of Proterozoic quartz gills, with an occasional jasper pebble all well rounded. Some of the boulders are 16 inches across. Coming by there are our granite pebbles. All those boulders must