Field Notebook: WY, SD 1955
Page 71
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
26.0t Sandstone, chiefly mud qr. thinly fbclzr (0.2-1.10) cross lzm, 0.2-0.4 Fb stone cep and another red Fe stone bznd 3 to 4' from top Lower 6.0 contains coarse qr, Izcmza + fvgmtns whlte Silty clstn, Bszl 1-2' Fb Impreg, loclly conc. 15.0t Clzystne silty + elzgy siltst, grey wzth yellow at top to whlte wzth siltier, hwdor- at bzse. qrdes to unit below 7.0 to 10.0 Chocky, hrd whlte seltstone and szady siltstone. upper 6' purpld wotlmg grade down whlte + massive), lower 4' purplish Wbass qr scattered loc., loczl fozg montcl zones, some chartic. at top. WJP pzls lo sep by yelgr clstn 9.8 Siltstone, and silty clzystne chiefly with subcrnch frcture, locl massive siltstu beds, purplish red Fetbzeite coxcs near bzse 6.5 Siltstone, massive, few clzystn ptugs, wzths grgy purple some yellow stain Fet bzuire coxcs at top Stream wash 35