BULL.GEOL. SOC. 



S 



: " 



r- : .V f 



: .■.-■- 





39 Morgan town ^urulstoiM' 

 3$ 3S Elklickcoal 



33 Upper Cambridge limestone 



32 Buffalo sandstone 



31 Lower Cambridge limestone 



30 Masontown coal 



29 Upper Mahoning sandstone 



28 Mahoning coal 



27 Mahoning limestone (Johns 



2$ 26 Lower Mahoning sandstone 

 Allegheny formation (11-25) 



Friendsville (After Stevenson) (Alter Stevenson) (After 



COLUMNAR SECTIONS OF THE CONEMAUGH FORMATION 



