or WEST VIRGINIA. 



A section thus obtained on Decker's creek, is as follows : 



31 



FT. IN. 



Hard sandstone, with seams of iron ore, 22 4 



Shales, 2 8 



Sandstone, with carbonaceous matter, 12 8 



Shales, 1 8 



Sandstone, white, 9 0 



Sandstone, black, 18 0 



Sandstone, gray, coarse, 14 0 



Shales, black, 16 6 



FT. IN. 



9. Conglomerate, white, with quartz pebbles, 13 0 



10. Shales, red and blue, 10 10 



11. Sandstone, blue, fine, 23 6 



12. Sandstone, white, fine, ^ 25 6 

 18. Shales, dark with iron, 6 0 



14. Sandstone, blue, fine, very hard, 18 0 



15. Sandstone, gray, very hard, 15 0 



208 08 



The record of the boring beyond this point is lost. 



Another boring was made west of the Monongahela, four miles below Morgan- 

 town. The record was not carefully kept, so that it is impossible to determine the 

 thickness of individual strata. Yet the section is of interest as showing a marked 

 change in constitution within a few miles. 



It is as follows : 



1. Sandstone, white, very hard, 



2. Sandstone, blue, 



3. Sandstone, white, 



4. Sandstone, blue, softer, 



5. Sandstone, white, fine, 



6. Sandstone, white, coarse, 



depth 218 feet, 



7 Sandstone, blue, very hard, 



The shales thus appear to be local. 



8. Sandstone, white, coarse, 



9. Sandstone, black, very coarse, 



1 0. Sandstone, white, very hard, 



11. Sandstone, white, coarse, 



12. Sandstone, white, 



13. Sandstone, blue, fine and hard, 



14. Sandstone, white, 



15. Sandstone, dark, very coarse. 



Thin seams of ore occur at various points; but they are unavailable, as the sur- 

 rounding rock is so hard that mining would be unprofitable. The thickness of the 

 formation does not vary much from three hundred and fifty feet. 



LOWER CAKBONIFEROUS. 



This period is represented by the Umbral of Rogers, which here shows a division 

 of shales, limestone and sandstone. 



The Shales are not well defined at any point knoAvn to me, on the south side of 

 Cheat river, though, as the land is cleared, and the mountain localities become acces- 

 sible, they will doubtless be found as readily on this as on that side of the river. 



The Limestone, as ascertained by borings, is one hundred and seven feet thick, and 

 is well exposed in the gaps of Cheat river and Decker's creek. At the limekiln, on 

 the latter stream, ten miles from Morgantown, where both the top and bottom of the 

 rock are concealed, the following section was obtained : 



