832 E. O. ULRICH CORRELATIONS OF CHESTER FORMATIONS 



tered. Compared with the section in Sainte Genevieve Comity, Missouri, 

 the only bed between the Rosiclare sandstone below and the base of the 

 Cypress above that I, and also Mr. Butts, recognize with anything like 

 confidence as in both is the Yankeetown sandstone. Unfortunately, as 

 I am informed, Professor AYeller does not see the Yankeetown in the 

 10-foot bed near the middle of the debatable interval, but recognizes the 

 Yankeetown in the 5-foot sandstone lying 25 feet beneath the Cypress 

 and correlates both of these thin beds with the much thicker Bethel 

 sandstone of Hardin County, Illinois, and western Kentucky (see chart 

 of correlated sections, p. 826). In harmony with this correlation of the 

 sandstones he refers all the beds between the 5-foot sandstone above and 

 the 12-foot bed of oolite below to the Renault. On the other hand, I see 

 no Renault at all in the Union County section. The 60 feet of limestone 

 and shale resting on what I think is the Yankeetown seem to me to 

 correlate better with the lower part of the Paint Creek and the often 

 shaly middle part of the Casper limestone in Kentucky than with the 

 true Renault ; and the beds III, IV, Y, and VI beneath the Yankeetown. 

 as conceived by me, seem to correspond very well to the three members of 

 the Aux Vases sandstone and the underlying top of the Sainte Genevieve 

 as developed in Missouri. The latter conclusion, which with the first 

 automatically eliminates the Renault from the Union County section, is 

 based vers' largely on the presence of the shale and limestone with 

 Pugnoides ottumwa between two beds of sandstone over typical Sainte 

 Genevieve limestone in both sections. The argument favoring the first 

 of the two opinions, namely, that the 60-foot zone, instead of being of 

 Renault age, really belongs to the Paint Creek formation, is much less 

 simple. It would require pages and pages of most detailed faunal and 

 stratigraphic comparisons, involving not only the facts observed along a 

 direct line running from Sainte Genevieve County in Missouri to south 

 central Kentucky, but also those relating to the Chester formations in 

 Indiana. It would, moreover, include discussions of probabilities in the 

 way of sea-bottom oscillations, discussions of areas supplying clastic 

 materials, and regarding other relatively shallow areas within the sea 

 basins in which deposits of any kind might be less in amount and less 

 continuously laid down than in the deeper parts. Although most of these 

 means of reaching the truth have been more or less thoroughly exploited 

 in the past 1 or 5 months, I have neither the time nor the desire to 

 undertake such discussions on this occasion, particularly because I fear 

 the data in hand are not sufficiently conclusive in their trend to permit 

 of attaining entirely satisfactory results. We require more complete 



