TENNESSEE. 



197 



2. Yery soon after leaving Cumberland, the road enters the Wells Creek Basin and crosses the 

 10 c. Black Shale, also 7 Lower Helderberg, 5 d. Niagara, 4 a. Trenton, 4 b. Nashville, and 3 c. Knox 

 Dolomite strata, which have been brought to the surface by an uplift. In the bluff on the river 

 just below Cumberland are good presentations of the 10 c. Black Shale, as well as the 5 Niagara 

 and 7 Lower Helderberg rocks. 



