Field Notebook: CO 1952b
Page 61
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Transcription
Mossey draw -> Deer Creek hogback (cont. from p. 14) 7.) Clay bed in here, thin, peels off rim about as shown in A.P. 8*) Middle Dakota clay - double bed, see Deer Creek section for measurement & samples 9*) Base of SS above the 3 little clays over main bed 10*) Main clay bed on top 1st ss 11) Main clay thins - almost pinches out up from (10) to here, basal quartz small softstone + silica clay coming, may be the 'split' doubtful. Bentonite present where pinch starts near 10, not further up. Across to SE can be seen that SS under mid Dakota clay takes in lower split of that clay bed up dip. All clays appear to thin abruptly up dip from Deer Cr. #1 section. 12) Thick red-br. wash channel ss in here. It is either - 1) from well up in Dakota over mid. clay and cutting out clay, or lower Dzk SS thickened - check 13) Main bed in here 2nd about 5' t thick. It thins to N on S. 14) Top Dakota sandstone, [illegible] Dakota clay under it, then relatively thin ss between clay and the 3 small clay beds 15) Main bed, at least 5' thick in this swale area - At base good clay with fossil [6593] * See Deer Creek #1 for details & samples of these exposures. 28