BITUMINOUS COAL STRATA. 249 



Section of the Coal Strata on Kenawha River, Ohio. 

 By Dr. Hildreth. 



Fig. 45. 



11 



1. Sandstone — coarse-grained, 



containing fossil trees. 



2. Argillaceous iron ore — 1 foot 



thick. 



3. Slate — silicious, used by In- 



dians for arrow-heads. 



4. Coal — bituminous, 4 ft. thick. 



5. Sandstone — coarse, 150 feet 



thick. 



6. Coal — bituminous, 4 ft. thick. 



7. Sandstone — argillaceous, con- 



taining an abundance of 

 vegetable impressions, 200 

 feet thick. 



8. Coal — 20 inches thick. 



9. Shale — bituminous and slaty, 



with sand, 40 feet thick. 

 10. Coal— 6 feel thick. 



II. 



Sandstone rock- 

 feet thick. 



-compact, 60 



12. Bed of the Kenawha river. 

 U 



