Field Notebook: SD, WY, ND 1957
Page 41
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Transcription
Measuring up from road gunion 0.4 - ? Limestone layer, conc., weather graywhite. Ostracodal silt layers on top T 11.0 Covered by slope wash - more ostracodal shale to ls. layer T 11.3 Clayrock massive splintery foot, when fresh, limy throughout with layers clayey ls. Much of it weathers shelly - light gray, but much red stem. Scattered ostracods, a few thin concentrated layers of ostracodal ls. - mostly replaced by red fie. W-57-22 (2boys) - upper 8! HL 22.0 Covered - waxy reddish clay float at base. Top in massive white sudy silt exposed in tree roots. HL 45.0+ Chiefly covered, but lower 30 feet shows patches of siltstone, white at base then OB wash of sand then pink to purple weather, siltstone T+HL 57.0 Sandstone cliff forming fine-gr, x bedded + x lzm. few med.gr. str near base - which is covered here 19