FIELD INVESTIGATIONS IN 1 92 1 837 



The section in Hardin County, Illinois, and Crittenden County, Ken- 

 tucky. — But little needs to be said about the section in Hardin County. 

 Illinois, and Crittenden County, Kentucky. The chart shows that here 

 we have a thick sandstone formation, the Bethel. This is separated from 

 the Cypress sandstone by shaly beds that can be nothing else but Upper 

 Paint Creek. Under the Bethel is a full sequence of Sainte Genevieve 

 deposits, including Ohara zones 2, 3, and 4= } which I have hitherto dis- 

 tinguished as the Upper Ohara. The chart indicates by different lines 

 the existing discordant views regarding the relations of the several 

 formations and zones to those found in the sections in Union County, 

 Illinois, and in the Mississippi Valley. Weller's views are indicated by 

 heavy broken lines and those here advocated by continuous lines. Though 

 as yet unwilling to abandon my 1917 view as to the equivalence of the 

 Bethel and the Aux Vases sandstones, I am now less well satisfied with 

 this correlation than I was. Probably both of these sandstones pinch out 

 in the intervening and originally synclinal area comprising Johnson 

 County and adjacent parts of Pope and Union counties. Consequently, 

 and in view of the various and readily conceivable possibilities in the 

 case, I am no longer willing to decide definitely that either the whole or 

 any one or two of the three parts of the Aux Vases sandstone lies within 

 the same stratigraphic zone as that of the Bethel. Under the circum- 

 stances, therefore, the propriety of using both names in their respective 

 districts is conceded and the final determination of their relations is 

 left to future investigations. 



Begarding the zones of the Ohara, of which 2 and 3 fall under Weller's. 

 new term Shetlerville, whereas No. 4 is referred by him to the Eenault, 

 I hold essentially, if not precisely, the same views as those published in 

 1917. No. -1-, according to Welter's own belief respecting the equivalence 

 of the Eenault and the Lower Gasper, can not represent the Eenault, 

 because in Caldwell and Christian counties, Kentucky, the Lower Gasper 

 overlies the Bethel, whereas Ohara zone 4, the same as in Crittenden and 

 Livingston counties and also in Hardin County, Illinois, underlies the 

 Bethel. 



The section in Caldwell and Christian counties, Kentucky. — The Cald- 

 well and Christian County section also requires very little of explanation 

 and comment. Except the Gasper part of the section, the sequence of beds 

 is in all essential features the same as in Hardin County, Illinois. How- 

 ever, it should be stated here that the Ohara loses its shaly character and 

 changes to solid limestone, in large part oolitic, in passing eastward, 

 through and beyond Christian County. More important changes from 



