Boulder, Colo. 1908-06-05 June 5, 1908
Started south over Chatauqua mesa on foot. Lyons here flanks the Fountain with tendency to form a low ridge. Collected Quaternary fossils in Bear Canyon. On S side of canyon found upper Morrison shales well exposed. “Dakota” basal sandstone here about 75 ft thick, medial shales 50 ft. and upper sandstone with intercalated clay bands 60 ft. No fossils. Shales look as at Owl Canyon, lower part covered. No conglomerate at base of the “Dakota”. Went S nearly to S. Boulder Creek, but found no exposures of anything later than Fountain except a little Lyons on flanks of Flatirons of S. Boulder Creek, and Dakota where gulches expose it. Mesa debris almost tops the Dakota ridge on divides between E-W gulches. On return found 150 ft. of
