656 JESSE E. HYDE 



The Cuyahoga Formation in Kentucky 

 Paleogeography of the Cuyahoga 



The Toboso and Hocking Valley Conglomerate Areas 



The Vanceburg Sandstone Facies 



The Source of the Material 

 Logan Formation 



Subdivisions and extent 



The Byer Member 



The AUensville Member 



The Vinton Member 



PART I 



CLASSIFICATION 



The following columns of formations (Table I) in as many 

 different regions are presented chiefly to indicate the members 

 composing the Cuyahoga in its different facies. To these have 

 been added the other formations with some duplication of names 

 so that the columns are somewhat more than a classification; they 

 are a partial correlation table. The top of the Cuyahoga on the 

 Ohio River, as explained later, is the stratigraphic equivalent of 

 the lowest part of the Byer member farther east and north. The 

 amount of equivalency cannot be exactly indicated. 



The names Vinton, AUensville, Byer, Berne, Fairfield, Lithopolis, 

 Churn Creek, Vanceburg, Rarden, Henley, and Portsmouth are 

 new formational names,^ and the name Buena Vista is applied 

 somewhat differently from its original usage but not with a wholly 

 new meaning. The name Raccoon is adopted from Hicks. ^ 



In presenting a summary of the findings of several years' work 

 in this field it is impossible to cite any but the chief facts. The 

 presentation of the large body of evidence on which these con- 

 clusions rest, soundly it is believed, must await the completion of 

 the work now being prosecuted on the faunas of the region. Such 



' The names Vinton, AUensville, and Byer were first used without definition in a 

 chapter by the writer entitled, "The Geological History of Fairfield County, Ohio," 

 in the History of Fairfield County, pp. 203-23 (Chicago: Richmond-Arnold Pub- 

 lishing Co., April 15, 1912). The names were applied to the respective members in 

 Fairfield County but they were not defined. They are here defined for the first time. 



''L. E. Hicks, Am. Jour. Sci., 3d. Ser., XVI (1878), 216. 



