CONEMAUGH FORMATION OF SECOND PENNSYLVANIA BASIN 171 



the fragments of Ames limestone seen below it belong above. Here, as 

 in Cambria county, a limestone 2 feet thick is fonnd at about 50 feet 

 below the Harlem coal, and that coal bed is approximately 223 feet 

 above the Upper Gallitzin (Philson of the text). The Brush Creek lime- 

 stone is exposed at many places, and at one exposure the Barton coal was 

 seen at 80 feet above it. The Upper Mahoning is usually thin in the 

 southern part of the county and the Lower Mahoning is apt to be shaly. 

 The Upper Gallitzin coal is persistent in this portion of the area and at 

 one locality near the Fayette County line the Lower Gallitzin with the 

 Lower Mahoning limestone is only 36 feet 8 inches above the Upper 

 Freeport.* 



In Fayette county, midway in the basin and 6 miles south from the 

 Westmoreland line, the Harlem coal bed (Elk Lick in the text) is 306 

 feet above the* Upper Freeport and overlies the "Pittsburg reds," 20 feet 

 thick. One hundred feet lower is a coarse pebbly sandstone termed 

 Salzburg by Stevenson, 40 feet thick ; near by, the Brush Creek coal is at 

 138 and the Lower Gallitzin at 45 feet above the Upper Freeport. South 

 from the Youghiogheny, on the east side of the basin, the Barton coal 

 was seen at 238, the Salzburg sandstone at 170, and the Brush Creek 

 coal at 138 feet above the Upper Freeport, the Barton being associated 

 with red shale. This Salzburg sandstone is practically equivalent to the 

 Buffalo sandstone of Doctor White and it can hardly include the sand- 

 stone overlying the Cambridge limestone. The Gallitzin coal bed, single 

 in this county, is at 50 to 65 feet above the Upper Freeport and its under- 

 lying limestone appears occasionally in the sections. The Ames and 

 Brush Creek limestones are present on the west side of the basin. Ex- 

 posures are few and in most cases imperfect throughout this basin south 

 from Clearfield county, f 



In Preston county of West Virginia Doctor White examined diamond 

 drill cores obtained near Masontown about 10 miles south from the state 

 line. One of them shows: 



Feet. Inches 



1. Barton coal bed 



2. Interval to boring 47 



3. Sandstone 8 6 



4. Fireclay and shale 19 



5. Pebbly sandstone [Buffalo] 54 



6. Black shale and fossiliferous limestone 



[Brush Creek] 5 9 



7. Coal bed [Brush Creek] 9 



8. Fireclay, green shale, sandstone, and fireclay ... 42 5 



9. Sandstone, shaly at bottom 35 4 



* J. J. Stevenson: (K 3), pp. 115, 116, 117, 120, 121, 129, 138, 163, 170, 172. 

 f J. J. Stevenson: (K 3), pp. 67, 84, 91, 110, 113. 



