CONEMAUGH FORMATION IN OHIO 187 



little more than 100 feet below the Pittsburg, and the rocks, aside from a 

 limestone at 1 to 17 feet, are almost wholly sandstone. The record of an 

 oil boring in Washington township 6 or 8 miles from the river shows 

 only shales for 750 feet below the Pittsburg coal, resting on the Potts- 

 ville, a sandstone 258 feet thick. Bed beds 25 and 155 feet thick begin 

 at 30 and 95 feet below the coal. This is not more than 2 miles from 

 Moundsville, in West Virginia, where a massive sandstone 85 feet thick 

 begins at 197 feet below the Pittsburg and is separated by 70 feet of red 

 shale from a lower bed of sandstone 60 feet thick. In the western part 

 of the county the section reaches to the Ames limestone, which is barely 

 140 feet below the Pittsburg. Limestone 4 to 30 feet thick is at to 12 

 feet below the Pittsburg, but thence to the Ames one finds in the north- 

 west part of the county little aside from sandstone, while in the south- 

 west part much of the interval is filled with shale.* 



Some small outliers of Conemaugh remain in Tuscarawas county west 

 from Carroll and Harrison, where Professor dewberry found the Brush 

 Creek (7a) at 53 feet above the Upper Freeport (7). The Lower Mahon- 

 ing, 30 feet thick, is the Stillwater conglomerate of Newberry and under- 

 lies 10 feet of red shale. Overlying the Brush Creek are 60 feet of 

 mostly olive shale, replacing the Buffalo sandstone, f 



Guernsey county, south from Tuscarawas and west from Belmont, has 

 the whole Conemaugh section exposed. In the northeastern part, near 

 the Belmont line, the Ames limestone is 118 to 152 feet below the Pitts- 

 burg coal bed, with, in the interval, limestones at 12 and 68 feet, but no 

 coal, very little sandstone, and no red shale. In the southeast portion the 

 interval to the Ames varies from 138 to 160 feet, with limestones at 10, 

 27, and 53 feet, and a red bed 20 feet thick beginning at 51 feet. At 

 one locality Professor Andrews found a fossiliferous limestone 1 foot 

 thick 65 feet above the Ames, and at another probably the same bed at 

 80 feet below the Pittsburg. The Ames limestone persists throughout 

 the county. A section in the central part of the county by Professor 

 Orton is: 



Feet. Inches 



1. Limestone 



2. Concealed 68 



3. Anderson coal bed 2 6 



4. Red shale 10 



5. Cambridge limestone 4 



6. Fireclay and red shale 15 



* E. B. Andrews : Vol. ii, p. 547. 



J. J. Stevenson : Vol. iii, pp. 262-263. 



J. A. Bownocker : Fourth Survey, Bull. no. 1, p. 220. 

 f J. S. Newherry : Vol. iii, p. 81. 



