Field Notebook: WY, SD 1956
Page 89
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
abundant on bedding planes is two "worm" marks. Weathered rusty brown. Ripple crest strikes 10° to 40° NE locally, Most beds pick X-rim, few show it, Current rips steep NW gentle SW 6 6.0 Siltstone, irreg thin bedded, becoming shaly at top. Bazel half is white wasty silt, irreg f/s stzrned bedding, loc finely sandy, upper half platy to shaly, with silty gray shale + shaly silt. Local thin "shoestring channel course qtz sand 33.0 - ? S2udstone, fine grained, cross-bedded, weathered brown to brown stain, +bulge beds, to 1.0 about 3' above base, top obscured. Top of this SS is probably not more then 10 or 15' from contact with Skull Creek, but not possible to measure it here.