384 BRUCE WADE 



three hundred feet above the waters of the Tennessee and Cumber- 

 land rivers. This divide is a northern extension of the western 

 Highland Rim of Tennessee, and it is probable that further study 

 of the plateau between the Canton and McEwen localities will 

 reveal isolated occurrences of Tuscaloosa that form an almost 

 unbroken chain of the remnants of this formation from Kentucky 

 across Tennessee into Mississippi and Alabama. 



A study of a map^ of the Upper Cretaceous belt of the 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 Tusca- 

 loosa belt in western Alabama and eastern 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 ahd disappears long before it reaches the northern limit 

 of Tennessee. It has been previously shown that the Tuscaloosa 

 formation, though probably not as thick and as widespread 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 Ten- 

 nessee 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 EUTAW FORMATION 



In the southern part of the state the Eutaw formation is 

 divided into two members: the Tombigbee sand and the Coffee sand. 

 The former is made up largely of red ferruginous sands that cap 

 the hills of eastern Hardin County and western Wayne County. 

 This member contains a small marine fauna near Burnsville, 

 Mississippi, and fossils from the same horizon perhaps have been 

 collected in Tennessee in Hardin County at a locality about five 



^ L. W. Stephenson, "Cretaceous Deposits of the Eastern Gulf Region," U.S.G.S. 

 Prof. Paper 81 (1914), map; also E. W. Berry, "Upper Cretaceous Floras of the 

 Eastern Gulf Region," U.S.G.S. Prof. Paper 112 (191 9), map. 



