CONEMAUGH FORMATION OF WEST VIRGINIA 183 



The most northerly patch of the Pittsburg coal in West Virginia is in 

 Brooke county, a few miles north from Steubenville, though in Jefferson 

 county of Ohio a similar patch is found nearly 10 miles farther north. 

 Doctor White's measurements in the Kings Creek region of that county 

 give a somewhat greater thickness to the Conemaugh than do those on 

 the Ohio side, the interval to the Steubenville shaft coal bed, the Lower 

 Freeport, being 580 feet and to the Upper Freeport 515 feet. Professor 

 Newberry's measurement on Wills creek, in Ohio, arc 493 and 558 feet; 

 but the intervals vary here with great abruptness. The Morgantown 

 sandstone, Elk Lick and Anderson coal beds are exposed, the last under- 

 lying the massive Cowrun sandstone 40 feet thick. The Ames, Cam- 

 bridge, and Brush Creek limestones are present, the last two being 70 

 feet apart. The Brush Creek limestone and black shale rest on the 

 Brush Creek coal bed, under which is calcareous shale representing the 

 Mahoning limestone. The Lower Mahoning is represented by massive 

 sandstone resting on the Upper Freeport, which is 50 feet below the 

 Brush Creek. Eed shales are shown above the Morgantown sandstone as 

 well as under the Ames and Cambridge limestones, but the beds arc thin. 



Nine miles farther south the Upper Freeport is absent, and the in- 

 terval from Ames limestone to Lower Freeport coal bed is 324 feet. On 

 the Ohio side of the river the distance from Pittsburg to Lower Freeport 

 is 556 feet, making the Ames about 225 feet. At Wheeling the interval 

 between the two coals is 556 feet, with the Anderson coal bed at 355 and 

 only "variegated shale'* for 280 feet above that bed; but at 3 miles south- 

 east from Wheeling a sandstone, 150 feet thick, begins at 136 feet below 

 the Pittsburg, and a coal bed is reached at 395 feet which is too high for 

 the Brush Creek, but is very near the place of a bed seen in northern 

 Beaver and seen frequently in Jefferson county of Ohio. Two red beds 

 20 and 25 feet are in the interval between the sandstone and this coal 

 bed. The Mahoning interval is filled with shale and the first sandstone 

 is in the Allegheny at 545 feet. Three miles south from Wheeling there 

 is little aside from shale between the Pittsburg and a coal bed at 530 

 feet which rests on a great sandstone continuing to the bottom of the 

 Carboniferous. Eed shale begins at 50 feet below the Pittsburg and 

 thence it predominates. It is altogether probable that the coal bed at 

 530 feet is the Upper Freeport, as the intervals increase slightly south- 

 ward. 



At 12 miles southeast from Wheeling, in Marshall county and on the 

 Pennsylvania border, 12 miles west from the boring in northern Greene 

 county, a record shows coal beds at 333 and 593 feet below the Pittsburg; 

 the latter is the Lower Freeport, but the former is too high for the 



