Field Notebook: Oklahoma, Texas 1922
Page 90
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Gracileleura, I. sculptilis, I. cycloptera. Large Platyceras, Stephnella punctulifera etc. This Hangman gneiss here 140 ft thick according to Reeds and the lower 20 ft are filled with Comacrucinus. I never saw or many at one time before, in the plain cottonfields. The balls could be seen afar, and by wealth of the land calcareous shales. Then Reeds gives 12 ft of Hangman here from the farmland land scored in no foot. What makes it Hangman'd on our determine. Then came the Chining Hill in four limestone ridges. Reeds gives the thickness as 33 ft but we can mean 100 ft. Ooliths grow, for 3 to 5 ft thick are conspicuous here, and here occur ooliths 3/16 inch across. Why is the