106 J. J. STEVENSON CARBONIFEROUS OF APPALACHIAN BASIN 



port and Middle Kittanning are reported, 70 feet apart, with almost con- 

 tinuous sandstone below the latter to the Pottsville.* 



Eecords referred to a definite datum in Fayette county are confined to 

 the southern portion of the county. Mr Campbell gives three which may 

 be cited. In the Mach well the Upper Freeport horizon is marked by 14 

 feet of shale and coal, the Kittanning sandstone is 49 feet thick and rests 

 on 16 feet of "shale and coal" marking the Ciarion-Brookville horizon. 

 Near the Monongahela river, on Cats run, there is no coal in the Alle- 

 gheny. At a few miles south the first coal bed is very near the place of 

 the Upper Kittanning, and at 65 feet below it is the Kittanning sand- 

 stone, 87 feet thick and reaching down to the representative of the 

 Ciarion-Brookville, which rests on the Pottsville. f 



On the west side of the Monongahela river the section may be followed 

 through Washington and Greene counties of Pennsylvania and the north- 

 ern "panhandle" of West Virginia, lying between those counties and the 

 Ohio river. 



At McDonald station, near the northern line of Washington, the coal 

 beds, all insignificant, are the Lower Freeport, Middle and Lower Kittan- 

 ning, and the Brookville, the relations being as at Sewickley and Pittsburg. 

 The thickness of the Allegheny is not determinable, but is between 255 

 and 275 feet. The only recognizable sandstone is the Kittanning. 

 At Washington the Upper Freeport is 548 feet below the Pittsburg, 

 there being a distinct thinning in the lower portion of the Conemaugh, 

 and the Allegheny is 285 feet thick. The only coal bed reported 

 is at 153 feet below the place of the Upper Freeport and represents one 

 of the Kittannings. The Butler and Freeport sandstones are one, 75 feet. 

 This sandstone is present in West Finlay and Mount Pleasant townships, 

 but the records show no coal in those or in Amwell township. Nearer 

 the Monongahela two thin coals are reported, but their relations are ob- 

 scure. It should be remembered that thin black shale is likely to be re- 

 ported as coal by the drillers. J 



Passing over into Brooke county of West Virginia, one has at New 

 Cumberland Doctor White's section: 



Feet. Feet 



1. Ames limestone 



2. Interval 236 



3. Mahoning coal bed [Brush Creek] 4 



4. Interval 90 



5. Lower Freeport coal bed 2 to 3 



* J. F. Carll : (I 5), pp. 221, 225; 1886 Kept., p. 728. 



W. G. Piatt: (H 5), pp. 6, 27. 

 t M. R. Campbell : Masontown-Uniontown folio, pp. 18, 19. 

 ±J. F. Carll: (1 5), pp. 302, 306, 307. 318: 1886 Kept, pp. 758, 765. 



I. C. White: Bulletin no. 65, p. 113. 



