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Hygiene sandstone exposed on east side of isolated hill in mouth of Bear Canyon, dip practically vertical, strike N 33˚ W, containing Inoceramus spp. and Baculites compressus.
Boulder, Colo., June 20, 1908
Dodds and I started on horseback for Coal Creek at 8 a.m. A very hot day. Where the road running S from Marshall strikes Coal Creek the Laramie sandstone and some shales are well exposed with dip E of 38˚ and strike N 6˚ W. Rocky Flat, between S. Boulder and Coal Creek has much quartzite in the debris sheet, increasing southward. Coal Creek valley is almost covered with it, forming “windows” in
