556 



APPENDIX. 

 Generalized Section for Indiana. 1 



Names of Formations. 



Thickness 

 in Feet. 



Characteristics. 



-5 h J 



Glacial and post 

 glacial deposits. 



Unconformity - — ~^- 



6 o $ \ Merom sandstone. 



Ph H I 



~- Unconformity -~~-~- 



"§»§' I Coal Measures. 



Mansfield sandstone 



Unconformity -~-«-~~ 

 Kaskaskia. 



0-385 



60 + 



300-800 



Sand, clay, and gravel. 



Massive sandstone. 



Shales, clays, sandstones, limestones, and coal. 



Massive. 



Sandstone and limestone. 



Mitchell limestone. 



0-250 



Massive. 



Bedford Oolitic 

 limestone. 



20-80 



Excellent building-stone. 



Harrodsburg lime- 

 stone. 



60-90 



Knobstone. 

 Rockford goniatite 

 limestone. 



40-600 



Arenaceous shales and sandstones; thin lime- 

 stone at base. 



' New Albany Black 

 shale. 



Brown shale. 



70-120 



25-47 



Hamilton formation. 



47 



Limestone and shale. 



. Corniferous. 



5-85 



Limestone and sandstone. 



' Lower Helderberg( ?) 

 formation 2 



25-230 



Limestone. 



Waterlime forma- 

 tion. 



65-150 



Limestone. 



ui 



Niagara formation. 



50-450 



Limestone and shale. 



Clinton and Medina 

 formations. 



0-100 



Limestone, etc. 



i Blatchley and Ashley, Indiana Dept. of Geol. and Nat. Res., 22d Ann. Rep., 1897, PI. II. 

 2 If this is really the Helderberg formation, it should be classed as Devonian, according to the 

 classification here adopted. 



