OIL GEOLOGISTS DISCUSS BEND SERIES FOURTH ANNUAL CONVENTION OF AMERICAN ASSOCIATION MEETS IN DALLAS. PROMINENT MEN HERE Dr. David White of U. S. Geological Survey and Prof. Schuchert of Yale Are Among Speakers. The bend series that produces the oil in the North Central Texas field held the attention of the two hundred or more petroleum geologists who met yesterday in this city for the fourth annual session of the American Association of Petroleum Geologists. The meeting took on the aspect of the local situation. But as much as the North and North Central Texas oil fields are the most interesting feature of the petroleum business just now, this was natural and proper. It developed that geologists are not of one accord as to the great plunging anti- cline that is known as the bend series, and that the so-called black limestone that is the bend formation is really mostly calcareous shale; and one geolo- ist advanced the theory that great thickness of the so-called bend lime- stone is due to the fact that drillers get greater pay for drilling in limestone that is found at great depths than they get for drilling in other formations--so the logs of the wells show lots of limestone. The theory was advanced that logs of wells, according to drillers' reports, are not good data for correlation purposes. Paleontologists Appear. Then it was that some paleontologists had an inning and told the geologists that fossils alone are the true index and the only sure way of correlating struc- tures. Dr. David White of the United States Geological Survey, and Professor Charles Schuchert of Yale University, led the onslaught that was made by the paleo- tologists, and made it very clear that certain fossils that can be identified even when drilled into infinitely small frag- ments, alone can determine the age and character of a structure that is being drilled into. "Are your correlations based upon mythology?" asked Professor Schu- chert. "You are trying to correlate tings on their color. Let me make a plea for fossils. You need the aid of paleontologists." Surface Reflections. The subject of surface structure as re- lated to subsurface structure was also interestingly discussed, a paper by Wal- lace E. Pratt, of the Humble Oil and Refining Company, on this subject lead- ing to considerable discussion and some emphasis of opinions. It seemed to be the opinion of Mr. Pratt that surface in- dications in the North and North Cen- tral Texas fields are not very good signs to point the way to pools of oil deep underneath the surface. Mr. Pratt did not warm up to the whole theory of the bend being a great plunging anticline. His paper indicated that the arch is probably very distinct in the southern, part of its progress, but that as it dips to the northwest it also flattens out to a considerable extent. He described the minor folds and formations on the bend from which oil is produced, and went into detail as to the results of tests and correlation of strata that has been attempted by him and his asso- ciates. He also discussed the relation of productivity to surface structure. He concluded that so far as development has proceeded, the best production has come from the wells located on the high- est points on the bend structure. He concluded that the problems of the geo- logist in North Texas are research prob- lems and that more accurate data is re- quired in order to get the best results. Dr. Robert T. Hill of Dallas discussed gists should get elbow to elbow with the drillers, and put aside their highbrow language and their good clothes while getting in touch and laying a predicate for co-operation. Dr. I. C. White illus- trated the need for this co-operation by a story. Night Session for Everybody. A meeting to which the general pub- lc had been invited was held last night at the Municipal Building. The pro- gram consisted of three interesting ad- dresses. David White of the United States Geological Survey told of the need for conservation of oil and for explora- tion in foreign lands and urged that United States companies secure holdings of reserves in other countries against the approaching time when the supply of American petroleum shall become ex- hausted. I. C. White, State Geologist of West Virginia, who was presiding over the meeting, suggested that the fate of American oil investments in Mexico is not calculated to encourage American oil men to explore abroad and suggested that a stronger foreign policy will be a great help toward the end sought. Dr. J. A. Udden of the Bureau of Economic Geology and Technology of the University of Texas, read a paper on the oil-bearing formations in Texas. He dis- cussed his subject in nontechnical lan- guage and went into considerable detail as to the formations that make up Texas and the outlook for oil production in this State. Among the suggestions made was one that the Edwards plateau seems to him to be likely territory for great oil pools. Dr. Udden made plain just what sort of structure are likely to pro- duce oil and described the oil fields of Texas with reference to structure and formation. M. L. Fuller of the Sun Company of Dallas, who spent a number of years in China as geologist for the Standard Oil Company, gave a most interesting illus- trated lecture on China. The meeting was attended by prac- tically all of the geologists attendant on the association sessions and by a large number of others who accepted the in- vitation to hear plain talks about geo- logy. The auditorium of the Municipal Building was almost filled. Arrangements are being made by Sec- retary W. E. Wrather for an excursion of geologists to Ranger through the oil field there if as many as twenty desire to go. The plan is to leave Dallas Sun- day evening and spend Monday in the field, returning to Dallas Monday night. ```</thinking> **Wait, I made a mistake in the transcription above.** Let me re-examine the image carefully. The text