ALLEGHENY FORMATION IN WEST VIRGINIA 145 



south from Browns mills and 10 miles west from Clarksburg. The only 

 sandstone recorded there is 80 feet thick and begins at 642 feet below the 

 Pittsburg. It is clearly the lower part of the sandstone at Clarksburg, 

 which ends at 715 feet. The first sandstone in the Pottsville is at 822 

 feet below the Pittsburg. 



Doddridge county, west from Harrison, is southeast from Tyler. Tn 

 the northeast corner, near Center Point, 10 miles west from Browns 

 mills, in Harrison, and 10 miles south from Smith.fi eld, in Wetzel, a de- 

 tailed record shows no trace of coal, but a sandstone 150 feet thick begins 

 at 615 feet and ends at 765, so passing beyond the Brookville horizon. 

 No trace of coal is noted in any record within northern Doddridge ; even 

 black shale seems to be wholly absent. Sandstone is unimportant for the 

 most part near the Harrison border and equally so on the Tyler border. 

 The records are dreary lists of slate and "limestone." 



Long Run is 10 miles south from Center Point and 8 miles west from 

 Cherry Camp. A coal bed is here at 652 feet below the Pittsburg, a Kit- 

 tanning horizon, and a sandstone 45 feet thick begins at 688 ; it is sepa- 

 rated by 10 feet of shale from another sandstone beginning at 743 feet. 

 The intervening shale is at the Brookville horizon. A higher sandstone, 

 544 to 589, represents the Butler interval. In southern Doddridge the 

 sands vary greatly, but that above the place of the Brookville is usually 

 represented to some extent. Coals are absent from both Allegheny and 

 Conemaugh in this portion of the county, but it is possible that a 4-foot 

 coal bed at 15 feet above the "Salt sand," in the southwest corner, may 

 be the Brookville.* 



Ritchie county, west from Doddridge, is south from Tyler and 

 Pleasants. 



The Pittsburg coal bed is of uncertain occurrence in most of this 

 county, being recognized only in the eastern portion, where, however, it 

 is wanting in many places. Its horizon can be fixed very closely by 

 means of the Logan ("Big Injun") sandstone below and the Washington 

 coal bed above in the Dunkard formation. 



At Tollgate, on the eastern edge of the county, a sandstone at the 

 Butler horizon is from 480 to 545 feet below the Pittsburg, the Mahon- 

 ing sandstone ending at 470 feet. Shales only are below into the Potts- 

 ville and no trace of coal is recorded. One mile west a sandstone is re- 

 ported as beginning at 691 feet and continuing into the Pottsville. At 

 10 miles west, in the Whiskey Run district, several detailed records are 

 available, one of which shows the Pittsburg coal bed. The Mahoning 



* Geology of West Virginia : Harrison, vol. i, pp. 248, 251 ; vol. ia, pp. 317-318, 328- 

 329, 335. 



XIII — Bull. Geol. Soc. Am., Vol. 17. 1905 



