Field Notebook: Texas, Oklahoma 1919
Page 63
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
"Here the top of the Ellenburger is exposed, followed by about 30 feet of the Lower Bend shale, capped by the Marls Falls li. Here an outcrop like that of Bedford, Indiana (see diagram). In this shale occurs an abundance of small fossils most of which are for yesterday. They come in at about 25 feet above the base. See the fossils. On our way back to Dan John we stopped at Punk Creek. I made the following rough section. Limestones at top of cliffs about half a mile to the north of the road ford. About 30 feet or more. Heavy reddish dark blue li. The first cliff makes Thickness estimated at about 50 feet, but maybe thicker. Carbonate gone but the softer li., maybe like those next below. About 20 feet. Earthy thin reddish li. with some thin shale partings, Breathing a very yellow ochre clay. At least 10 feet. It is the perfect fossils have gone. An erosional unconformity. Irregular hummocks of it richly lipped and just south of the road ford there is a small inclined cliff of about 5 feet. The lithology on either side is marked, but then appears like no such significance in time or famous.