DUNKAKD FORMATION 117 



The V/ashington coal bed is thin and unimportant throughout. No 

 trace of the JoUytown coal bed was observed in these townships, nor was 

 the Canton seen east from North Strabane. The Waynesburg B, seen 

 for the first time in North Strabane, and the Waynesburg A, with the 

 Colyin limestone, are present in Nottingham as well as still farther east 

 in Union, Carroll, Fallowfield, and Somerset. These coals are worthless. 



The interval from the Upper Washington limestone to the Washington 

 coal bed changes very slowly, being still 160 feet in Somerset, but that 

 between the Washington and Waynesburg coal beds, only 120 feet in 

 North Strabane, becomes 140 in Pallowfield and Somerset. The Cass- 

 ville shale, carrying no limestone in these townships, is of irregular occur- 

 rence, often cut out by the overlying Waynesburg sandstone, which be- 

 comes massive and very prominent toward the Monongahela valley.* 



In the neighborhood of Washington borough measurements were ob- 

 tained in Canton, South Strabane, and Franklin townships, giving the 

 following succession: 



Feat 



1. Limestone, dark blue, Nineveh Fragments 



2. Concealed 10 



3. Limestone Fragments 



4. Concealed 35 



5. Limestone, light in color 5 



6. Concealed 55 



7. Limestone, light blue, Rogersville 8 



8. Coal bed, Pursley Blossom 



9. Concealed 30 



10. Limestone [Ten-mile] 5 to 10 



11. Shale 2 to 5 



12. Coal bed [Boyd] Blossom 



13. Clay, sandstone, shale 9 to 21 



14. Upper Washington limestone 6 to 20 



15. Concealed 30 



16. Coal bed [Canton] Blossom 



17. Concealed 20 



18. Coal bed [ Jollytown] Blossom 



19. Concealed 15 to 25 



20. Middle Washington limestone 6 to 20 



21. Shales 10 to 15 



22. Coal bed, Washington A Blossom 



23. Shales and thin limestones 40 



24. Lower Washington limestone 23 to 33 



25. Washington coal bed 4 to 7 



26. Washington sandstone, clay, shale 12 to 17 



* J. J. Stevenson: (K), pp. 212, 220, 228, 237, 238, 239. 

 I. C. White: (K), 218, 219, 224, 226, 227. 



