BULL. GEOL. SOC. AM. 



VOL. 20, 1908, PL. 47 



QUARRY. FACE AT NEWSOM, TENNESSEE 



Upper beds are the Ohio black shale (Lower Mississippic) , resting disconformably on 6 

 feet of Onondaga limestone (Lower Middle Devonic), which in turn lies disconformably on 

 the Louisville (Middle Siluric). 



