Field Notebook: Oklahoma 1919
Page 77
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
and to the overlying fine sandy shales. Because of the incompetency of the beds, and the decided com- petency of the Ormeulites below the Juedpark above the Stanley is much folded and very complicated. Against the Ormeulites the basal Hanty is much older and metamorphosed. The Juedpark because in the main of sand- stones lies in broad open simple folds dipping at low angles, probably not over 20 degrees. At the base is the triplicate Arkansas Ormeulite. The basal third consists of thin bedded schistose hard and dense rock, that Berry says is mainly made up of volcanic ash. This is a very friable and breaks out in little concretions of say Devonian completion. The lower third has a thickness of 200 to 300 feet. The middle third consists of thin-bedded material while the upper third is the home-stone horizon. It reaches to a porous material, jointed never white or clay. This reminded one of the bird- land cliffs seen on the Dolphin in October '20 but it seems did not see it any way. The fossil? 976 a coal comes for the base of the Ormeulites. If it is a coal then very bare there are of the Arkansas ormeulites.