Field Notebook: SD, NE 1959
Page 35
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Field-1959 Verdigre localities A- Shale cuts east and west of road, Fossils (ammonoids) in shale upper part cuts, Brownish gray shale with Fe-stained small concs - mostly barren. Base of cut with bluish-gray weathering shale containing horizontal U-shaped worm tubes. Cut is about 1/2 mile south of RR crossing on Rt 14 B. Road going east from US 14 at Verdigrre cut-off several good cuts, Rough succession follows - descending. 1. Gray shale with semi-indurated gray shaly silt layers, scattered redbrn. weath, Fe stone conc layers And a few white punky concs. which look celcecreous-some small, holey, Zone of gray shale with cone-in-cone concretions. Brownish shale (on weathering) with small Fe-stone concs & scattered ammonites - beculites in float and scaphite frag ments. Dark gray shale, more sticky + blocky bluish cast, sharp color distinction. U-shaped horizontal worm tubes in this zone. 16