60 J. J. STEVENSON CARBONIFEROUS OF APPALACHIAN BASIN 



Feet Feet 



1. Waynesburg coal bed 5 to 8 



2. Interval 30 



3. Waynesburg limestone Thin 



4. Interval 66 



5. Uniontown coal bed 3 



6. Uniontown limestone 8 to 12 



7. Shale and sandstone 28 



8. Benwood limestone 80 



9. Shale 5 



10. Upper Sewickley coal bed 2 to 3 



11. Sewickley sandstone 35 to 40 



12. Fishpot limestone 25 to 30 



13. Shale 25 



14. Redstone coal bed 2 



15. Pittsburg sandstone 40 



16. Pittsburg coal bed ?. 7 to 8 



and near the Greene County border the Waynesburg is 362 feet above 

 the Pittsburg. 



In Morgan and Jefferson townships of Greene county the Waynesburg 

 is triple to quadruple, varying in thickness from 6 to 13 feet, with from 

 4 to 7 feet of rather inferior coal, and is nearly 40 feet above its lime- 

 stone, 6 to 8 feet thick. The Uniontown coal bed becomes irregular 

 and is almost directly in contact with its limestone. About 40 feet of 

 sandstone separate the latter from the Benwood, which, including much 

 calcareous shale, is about 80 feet thick. The Sewickley sandstone and 

 Fishpot limestone retain their importance, but the Eedstone coal and 

 limestone become indefinite. Farther southwest the Monongahela 

 quickly passes under cover and the information from oil records is very 

 imperfect. A record near the West Virginia line reported by Doctor 

 White gives 345 feet as the interval between Waynesburg and Pittsburg, 

 with a trace of the Upper Sewickley at 95 feet above the latter bed.* 



The Western basins in Pennsylvania. — Petty areas of the Pittsburg 

 coal bed, widely separated, remain in Allegheny county north from the 

 Ohio river. The cover rarely exceeds 30 feet and is the massive Pitts- 

 burg sandstone. Even near Butler County line the bed retains its char- 

 acteristic structure, showing: 



Feet Inches Feet Inches 



Coal and shale 3 3 to 6 6 



Clay 1 2 to 1 4 



Main coal 4 10 to 5 5 



* J. J. Stevenson: (K), pp. 136, 140, 141, 143, 210, 211, 212, 221, 222, 223, 224, 

 225, 227, 228, 303. 



I. C. White: (K), pp. 180, 201, 203, 215. Geology of West Virginia, vol. ia, p. 122. 



