Field Notebook: Texas 1924, 1925
Page 17
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Transcription
We then ventured about 7 miles further S.E. across Upper Cretaceous farm lands when there was a little rise in the country, making the basal Chidway - Erone. There was a perceptible dip over and on these sandy beds that had an abundance of large flint concretions. Another mile S.E. brought us to the gate of J. O. Caldwell's farm, and then it was 2 or 3 miles to the N.N.W. to the fossiliferous Bridgway. What one saw here was less than 10 feet of Bridgway are highly fossiliferous. Below in 5-6 feet to river level was Greenish - Haed clay soft caly reflect with Venericardia in small nests and large aggregations (those about one foot thick) that occasionally made a hardened layer (took one large lump). Most of the shells are double valved and far more the impression that they occur in their original habitus and probably held in place by a tireous. With these saw almost nothing else. Above the Venericardia bed in a very fine grained flavonite gneiss which one saw not more than 5 feet, and one collecting was out of the central gneiss. Here seem many kinds of gastropods and smaller bivalves along with several species of cup brachials. The clay was so wet and soft that I do not if