190 J. J. STEVENSON — CARBONIFEROUS OF APPALACHIAN BASIN 



Mr David White obtained in Blackwater gorge, Tucker county, an 

 important section, which, reduced from the diagram, is as follows : 



Feet. Inches 



1. Sandstone 15 o 



2. Massive conglomerate 40 



3. Soft sandstone, with lenses of shale containing fossil 



plants 25 o 



4. Massive conglomerate , . 40 



5. Soft sandstone, lenses of coal and shale with fossil 



plants, Mercer forms 20 



6. Soft sandstone 63 



7. Shale 10 



8. Dark shale 5 



9. Shale with nodular iron ore 5 



10. Sandstone 10 



11. Coal and fireclay Thin. 



12. Clay shales, with plants and nodular ore 25 



13. Coal bed Thin. 



14. Green shale and blue clay 20 



15. Sandstone 40 



16. Shaly sandstone 10 



17. Sandstone and conglomerate 45 



18. Shaly sandstone 28 



19. Coal, clay, carbonaceous shale 10 



20. Shales, lower portion coaly 20 



21. Coal bed 1 6 



22. Shale 15 



23. Sandstone 25 



to the Lower Carboniferous red shale. Number 1 is at 10 feet below a 

 thin coal bed associated with shales containing plant remains of Alle- 

 gheny type. 



Numbers 6 to 10 appear to represent the Connoquenessing sandstones, 

 with the Quakertown shales, and number 15 is evidently the Sharon 

 sandstone, the Lower Pottsville being represented by numbers 15 to 23, 

 inclusive, thus giving for the Upper Pottsville a thickness of 278 feet 

 and for the Lower Pottsville of about 195 feet. 



WEST VIRGINIA— CENTRAL AND WESTERN COUNTIES 



Passing now to the western counties of West Virginia, the effort will 

 be to follow the section westward to the Ohio river and southward to the 

 Kanawha. At Morgantown the intervals from the Pittsburg coal bed are 



Feet 



Upper Freeport coal bed 560 



Kittanning coal bed 670 



Roaring Creek sandstone .... 713 



Top of Pottsville 800 



