Field Notebook: CO 1951c
Page 81
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Transcription
15. irreg bedded fine ss (+ some siltstone in lower part of it) whole weathers light gray, local streaked to brown. 4.5 Interbedded silty + study shales and shaley sandstone. 6.2 Platy siltstone + fine sandstone, weather gray with streaks to brown. Discout, 104.05 Sandstone, massive, x-12cm, fine to coarse, cal. ss. cal. is chunky peb. one, chiefly in lower (10 feet) thick beds of base. upper part variable in thickness, channel-like. Discout, 3.0+ sandstone, fine or massive, light gray to white with Fe streaked upper surface, cuts across bedding of unit above + is basal member of clay units below r. 7/8 clay bed. Shelf with thin layers and 12 minute of siltstone, concentrations of those in center + top part. A thin bed of bentonite at base under .8 platy siltstone. 6.31 Massive buff weather, fine grained sandstone. 3.3 clay bed- upperone. Gray clay + soft clay - chiefly obscure.