Field Notebook: WY, SD 1956
Page 53
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Transcription
6) 13.0 Claystone, red in lower half, becoming variegated purple, red, grey & yellow in upper half 7) 3.5+ Siltstone, clayey, gray to dark- gray very fine silt feeling plasticity, weathers to white popcorn surface, has a few siltstone core masses. 8) 11.5 Claystone, silty, variegated, grey, & purplish red in lower 2/3, upper third chiefly light grey splashed with red & yellow 9) 8.3 (Claysone, silty, light grey) with orange to yellow staining in splotches - chiefly upper 5', and scattered conce. of spherulites. In upper part this is more of a silt than a clstn. 10) 1.6 Shale, silty, lignitic to a slightly 1/4 silt.