Page:Field Notes of Junius Henderson, Notebook 2.pdf/57

same condition, with other thin limestone strata above it. Here the Dakota forms 3 distinct benches. The Lykins has a dip of 27˚, the medial ridge making member rises nearly as high as the Lyons, with the valley consisting of a lateral running each way from the pass, but not very deep at the pass thus: ((drawing in field book)). The Lykins and the Lyons are both quarried, the former to a limited extent, the latter extensively. The Lyons furnishes large, fine blocks of flawless sandstone of a uniform red color, not very intense red. It is much thicker here than a short distance northward, massive and uniform, sharply differentiated from the Fountain in the escarpment both in texture and color, but conformable. The basal and (?) third beds 15 or 20 ft thick are strongly crossbedded in the escarpment where it faces SW, thus: ((drawing in field book. Caption= Fountain purplish red coarse sand and conglomerate)).