Field Notebook: WY, SD 1955
Page 123
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
silty base grading to siltst. below. Laterally variable, yellow stain below mid th band - spherulite 8 6.7 Siltstone, upper 0.9 a bed sandy crab silt, rust massive crumbly, loc. crab, plant frags + much pyrite throughout. Upper 1/2 worths dark gray to black, lower fasten O to V + brown. Locally SS2.0 comes in under black 4.2 - 2nd beds, below loose stain eve brownish some pink gray at base - 7 4.2 Sandstone even bedded massive to lzu, finegr weaths brn, loc Fe stain, 1 6 4.0 Siltstone with 1.0+ silty ss to massive sand siltst. in middle part. Gray loc clayey upper with Fe specks giving purple to pink crest lower is gray claystone. 5 6.2 Sandstone, even bedded to thin bedded, some Festam bedding, micaceous. 61