APPENDIX. 



Section in Indian Territory — Continued. 



563 



Names of Formations. 



Thickness 

 in Feet. 



Characteristics. 



re « 

 OQ'B 



Hunton limestone. 



160 



Light-colored, with flint and chert concretions 

 in the upper part. 



\ Sylvan shale. 



50-100 Blue clay shale. 



Viola limestone. 



750 



White, bluish, with flint concretions in the 

 middle. 



Simpson series. 



1600 



5. Sandstone, calcareous sandstone, and shale 



(at top). 

 4. Thin fossiliferous limestone and shale. 

 3. Calcareous sandstone and shale. 

 2. Fossiliferous limestone and shale. 

 1. Sandstone and shaly beds. 



Arbuckle limestone. 



4000-6000 



White and blue, partly massive and partly 

 thin-bedded. 



R rf] 



g.g [• Regan sandstone - . 



— — Unconformity ■^^ 



50-100 



O J 



Tishomingo granite. 



Coarse, dark brown. 



Coarse red granite with dikes of basic rock. 



Strata folded and faulted. 



