Field Notebook: WY, SD 1956
Page 9
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Transcription
"~2~ 11.5 Claystone, light gray to light gray green (downward) slightly silty, becoming sturdy at base. Soft to waxy, upper 6' mostly bright gray, some brownish mottling. 5.5 Claystone, continuous with above but highly sturdy - to clayey SS, light gray green at top to darker green gray at base. Qtz grains + some cht 5.5 Claystone, plastic, green, sticky, somewhat silty, some purple mottling in basal foot. 11.5t Claystone, purple mottled with green in upper 5'0, below is brick red to maroon popcorn over similar colored silty dust. couldnt reach it fresh. 6.8 Claystone, soft, waxy, silty green becoming siltier at base + grading to unit below. 2.6 Siltstone, locally very fine-gr. szudstone minor clay, friable soft basal 10 stained yellow, weathers upwhite to yellowish, local Fe impreg 3