WEST VIRGINIA NORTH OF KANAWHA RIVER 189 



Feet. Inches 



18. Sandstone, shale streaks in upper part 54 2 



19. Shale 2 4 



20. Clarion coal bed 1 6£ 



21. Fireclay 11 6£ 



22. Interval, about 10 



23. Pottsville sandstone, about 250 



The interval between the Upper Freeport coal bed and the Stockton 

 horizon is practically the same as at Webster, but here the Stockton is 

 represented by numbers 14 to 16, in all occupying a space of 43 feet 6 

 inches, while from the bottom of 16 to the Clarion coal bed is 71 feet 6 

 inches, the Roaring Creek sandstone being number 18. Below the Clar- 

 ion coal bed is the great sandstone mass overlying the Campbells Creek 

 or Sharon coal bed. No detailed measurement is given of this mass for 

 the gorge through Chestnut hill east from Morgantown, but the section 

 in Cheat River gorge, 6 or 7 miles farther north, shows a coal bed within 

 the sandstone and the Campbells Creek underlying, while the Sharon 

 sandstone and the rest of the Lower Pottsville of the southern localities 

 have disappeared, permitting the shales below the Connoquenessing sand- 

 stone to be continuous with the Shenango shales of the Lower Carbonif- 

 erous. 



A brief reference only can be made to the region lying east from the 

 area already studied, as the information at present available is very 

 small. 



Some insignificant areas of Pottsville have escaped erosion on the 

 mountains forming the boundary between Tucker and Randolph coun- 

 ties at the west and Grant and Pendleton at the east. Mr Darton states 

 that his Blackwater formation, which is equivalent to the Pottsville, 

 consists of* 



Feet 



1. White conglomerate 100 



2. Sandstone, shales, coal beds 200 



3. Gray sandstones. = 100 



These outlying patches are almost on the strike with the most south- 

 easterly extension in Mercer and Tazewell counties, south from the 

 Kanawha-New river. 



Messrs Darton and Taft state that in the Potomac field of Tucker, 

 Grant, and Mineral counties the thickness of the Blackwater varies from 

 645 feet in Tucker to 290 feet on the Potomac.f 



*N. H. Darton : U. S. Geol. Survey folios, Franklin, 1896. 



fN. H. Darton and J. A. Taft : U. S. Geol. Survey folios, Piedmont, 1896. 



XXV— Bull. Geol. Soc. Am., Vol. 15, 1903 



