U. S. GEOLOGICAL SURVEY 



PROFESSIONAL PAPER 81 PLATE I 



A. LOWER CRETACEOUS SANDS AND CLAYS OVERLAIN UNCONFORMABLY 

 BY PLEISTOCENE TERRACE GRAVELS, SANDS, AND SANDY LOAMS, 

 COOSADA BLUFF, ALABAMA RIVER, 11 MILES NORTH OF MONTGOM- 

 ERY, ALA. 



B. UNCONFORMABLE CONTACT BETWEEN LOWER CRETACEOUS CLAY AND BASAL SANDS 

 OF THE EUTAW FORMATION, CUT IN SEALE ROAD, 4 MILES SOUTHWEST OF COLUMBUS, 

 GA., IN RUSSELL COUNTY, ALA. 



