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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 78 



Fig. 14. — Outcrop of New I'rovidence shale followed unconformably by 

 Fort Payne chert, illustrating submarine erosion. Eagle Creek, northeast 

 of Livingston, Tennessee. (Photograph by Bassler.) 



Fig. 15. — Fort Payne chert with overlying Warsaw formation, Tullahoma, 

 Tennessee. (Photograph by Bassler.) 



