Field Notebook: Texas, Oklahoma 1919
Page 53
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Here is some chalk at the top, rather chalk due to weathering. Then comes in the Lower Bendel. First a sandy Dolomite (du pierre) about 3 feet thick. The basal 3 to 8 inches is muddy and without chalk, and the rest is about 50% made up of chalk jetties face signs derived from the Ellenstrump. It's a complement with the pettles of chalk. Mr Smith's gang kind. Then a blue-grey nodular clay li, about 18 inch thick. I thought this bed also to be some erratic, but on the ground side on the higher lane Then a blue clay or soft shale with dark nodules and then goes of immense dark li, in after far. All smells of petroleum. Thickness here about 40 feet. Fossils are accordingly scarce in the nodules and hard any in the clay. The commoner ones are Leptaptychus, Lingula 2 or 3 species, Osticuloides, Ambroclin plansemmous (1 specimen), and ostracoda. In this clay layer times pieces of rather large goniatites are frequent and finally I succeeded in getting two species that can be identified. Once this shale follows the Marble Falls li. But later I learn that those blue dense earth li in Glen Falls absolutely to the Lower Bendel strata. The three Ambroclinian top type. Then continued S.E. to about 7 miles from San Veta where on the road side may be seen great exposure of the top of the Marble Falls li dipping steeply about 70 degrees.