Field Notebook: CO, WY 1955b
Page 121
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Transcription
7427/ frable, lower 3' massive thinly lamy, middle 3' contorted siltss laminae, rectangular platy with bsh + salt, 8.5 Siltstone, chiefly massive green salt, upper feet is vvd. Loc szudy weather blocky, 1 17.7 Interbedded fine gr ss and siltstn, laminated, c2rb and non-c2rb. Thin bodded to platy, with Fe. impreg in some layers Upper feet Fe impreg, weathers yellow 9.3 0.6 Rusty beds. C3.7 Interbedded dk-gray silt shale, fine gr ss, +siltstn. Markedly shaly in contrast interval below. SS inter- beds 0.1+ to 1.0 but most less than 0.5. Whole laminated, c2rb frzy's, worm fossils Thin beds siltstn +ss commonly Fe impreg, ss minor in upper 1/3 where thin silts take 60