Comparative Sections of eastern and western Alabama. 



The following tables show the relative thickness of the Tertiary and Cre- 

 taceous strata as exposed along the Tombigbee and Chattachoochee rivers 

 respectively : 



Formations. 



MiOCENK 



Eocene 



CUKTACEOUS. 



Feet. 



Alum Bluff (Not seen) 



Chattahoochee (Not seen) 



General* 

 section. 



f r Salt Mountain 



Upper < Vicksburg 



(White Limestone.) ( Jackson 



150 



140 



60 



Middle 



Claiborne 140-145 



Buhrstone 



^Hatchetigbee. 



Bashi 



Tuscahoma .. 



Lower \ Nanafalia 



(Lignitic.) Naheola 



I Black Bluff _. 

 [^Midway 



Ripley 



Rotten Limestone. 

 Eutaw 



Cretaceous (?) .Tuscaloosa (or Potomac] 



300 



175 



80-85 



140 



200 



130-150 \ 



100 i 



25 



250-275 



1000 



300 



1000 (?) 



Chattahoo- 

 chee sec- 

 tion. 



Feel. 



65 

 250 



(Not seen) 



250 



25-30 



70-75 

 170-175 



10 



44 



173 



175 



(Wanting) 



218 



1031 

 (Wanting) 

 345 



'■ Bull. 43 U. S. Geol. Survey, 1886, p. 18. 



Series. 





General 

 section. 



Chattahoo- 

 chee sec- 

 tion. 



Miocene __ __ _ _ 



Feet. 

 (Not seen) 

 1,655± 

 2,560dz 



Feet. 

 315 



Eocene _ _. .. __ _ _ 



1,145-f- 



Cretaceous. ... __ __ ... 



1,441 





Total .. _._... _. _ . . . _ 



4,215zb 



2,900d= 





^600) 



