148 J. J. STEVENSON CARBONIFEROUS OF APPALACHIAN BASIN 



burg, very near the place of the Brookville coal bed. In southern Gilmer 

 a record at Eosedale shows almost no sandstone. At Tanner, 8 miles 

 west from Glenville, the sandstone seen at the latter place is only 68 

 feet thick and is divided midway by 23 feet of shale. 



Calhoun county is west from Gilmer. The records here are somewhat 

 indefinite, as the Pittsburg is wanting. Two records in the northern 

 part of the county show a sandstone, 40 feet in one, 28 feet in the other, 

 which belongs to the interval of that seen at Glenville 660 feet below the 

 Pittsburg. A lower sandstone beginning at 674 feet is in the Pottsville.* 



Wirt county, southwest from Ritchie and northwest from Calhoun, is 

 east from Wood. 



The Cowrun anticline of Washington county, Ohio, passes across the 

 eastern side of Wirt and brings up the Ames limestone, which is ex- 

 posed frequently near Burning Springs. The Pittsburg coal bed is rarely 

 present either in exposed sections or in well records, but a record on the 

 east side and another on the west side show that bed and afford means 

 of comparison. Two records in detail near Burning Springs are referable 

 to the Ames limestone, which in the Cowrun area of Ohio is about 240 

 feet below the Pittsburg coal bed and 150 feet above the Upper Free- 

 port, but the lower interval increases eastwardly. 



In the wells within the Burning Springs area a sandstone persists 44 

 to 71 feet thick and beginning at 682 to 687 feet above the "Big Lime." 

 At the Ritchie line, 5 miles east, a sandstone 60 feet thick begins at 725 

 feet above that limestone and is 553 feet below the Pittsburg. The 

 sandstone at Burning Springs is 269 feet below the Ames limestone, so 

 that limestone, if the relations to the "Big Lime" be the same as at the 

 Ritchie border, would be 311 feet below the Pittsburg, which is highly 

 improbable. It is better to regard the lower portion of the section as 

 thinning westward and to accept 725 at the Ritchie border as equivalent 

 to 686 at Burning Springs. On this basis one may place the coals recorded 

 in one of the wells thus : 



472 feet below the Pittsburg 



1. 188 



feet 



below the 



Ames .... 472 



2. 290 



" 



ii ti 



" .... 574 



3. 358 



(< 



it ii 



" .... 642 



4. 409 



<( 



ii ii 



" .... 693 



5. 510 



«< 



<< <( 



" 794 



6. 546 



ii 



ii ii 



" .... 830 



The error is very slight ; numbers 1 and 4 are very near to where one 

 should expect the Upper Freeport and the Brookville. In Wood county 



* Geology of West Virginia : Gilmer, vol. i, pp. 257-258, 

 383-384, 386; Calhoun, vol. ia, p. 396; vol. ii, p. 395. 



560; vol. \a, pp. 378, 380, 



