106 Tuscaloosa Formation [304 



Eastern Gulf Region shows that the Tennessee River flows 

 from the east into the Cretaceous in northwestern Alabama 

 and then takes a northerly course just east of the Cretaceous 

 across Tennessee and Kentucky. The geological map shows 

 that the wide Tuscaloosa belt in Western Alabama and East- 

 ern Mississippi disappears entirely just north of where the 

 Tennessee River flows into the belt, and in the same part of 

 the state the Eutaw belt becomes abruptly narrow and dis- 

 appears long before it reaches the northern limit of Tennes- 

 see. It has been the purpose of the present article to call 

 attention to the occurrence of both Eutaw and Tuscaloosa 

 sediments farther north than has been heretofore reported 

 and to point out that these occurrences show that the Tusca- 

 loosa formation, though probably not as thick and as wide- 

 spread as in Western Alabama and Eastern Mississippi, was 

 at one time an important formation and covered large areas 

 in Tennessee and Kentucky, and that the Eutaw formation 

 extended farther east and north of the areas mapped. The 

 erosion of the Western Tennessee Valley has almost entirely 

 removed the Tuscaloosa deposits toward the north, and has 

 likewise removed a large portion of the Eutaw deposits, but 

 to a less extent than in the case of Tuscaloosa. 



The accompanying sketch map shows the formerly known 

 distribution of the Tuscaloosa in Eastern Mississippi and 

 Western Alabama and the probable northward extension of 

 the Tuscaloosa belt as shown by the recent work in this 

 area. 



