151 Devonian of Southkun Indiana 23 



Albany the Rockford limestone is about three feet in thickness in 

 the bed of the stream at the northwest side of the town. Just 

 west of New Albany the New Providence shale is well exposed 

 along the track of the Air Line railroad. The massive sandstone 

 of the Riverside formation which follows this shale is well ex- 

 posed at the tunnel near Edwardsville, four miles west of New 

 Albany. 



The following is a connedted sedlion of the rocks exposed be- 

 tween the Falls of the Ohio and Edwardsville: 



Generalized Section from the Falls of the Ohio to 

 Edwardsville. 



7 . Harrodsburg limestone 



6. Riverside sandstone (massive to shelly sand- 

 stone and sandy shales) 200' 



5. New Providence shale (blue arenaceous shales) 125' 



4. Rockford limestone 3' 



3. New Albany Black shale 104' 



2. Sellersburg beds ^ 15' 



I . Jefferson ville limestone 20' 



The entire thickness of the Jeffersonville limestone is not 

 shown in any single sedlion, but its thickness probably does not 

 exceed twenty feet in the vicinity of the Falls of the Ohio. 



Statioji lyA' . — Falls of the Ohio. 



The following list of species is from the Jeffersonville limestone 

 on the north bank of the river about a half mile below the J. M. 

 & I. bridge: 



Atrypa aspera r, Atrypa reticularis a, Dlotlwrpliyllum decortica- 

 tum c, Chonetes .sp. r, Conocardium frig07ialc f r, Cyrtina JiaDiilton- 



