ALLEGHENY FOEMATION OF WESTERN PENNSYLVANIA BASINS 107 



Feet. Feet 



6. Interval 100 



7. Middle Kittanning Blossom 



8. Interval 20 to 30 



9. Lower Kittanning coal bed Blossom 



10. Fireclay 10 



The interval from the Ames limestone to the Lower Freeport is 340 

 feet, whereas at Smiths ferry, 10 miles northeast, it is 366 feet; but the 

 distance from Ames to Lower Kittanning has diminished not more than 

 3 or 4 feet. The Brush Creek coal bed is the Groff vein coal 7 of the 

 northern Ohio column. Ten miles farther south, opposite Steubenville, 

 Ohio, the Lower Freeport coal bed has been mined. No measurements are 

 available on the West Virginia side of the river, but on the Ohio side the 

 interval to the Ames limestone is 340 feet, which, as appears from many 

 measurements by Newberry, Orton, and Stevenson, is 210 to 220 feet 

 below the Pittsburg coal bed — a notable decrease in the upper part of the 

 Conemaugh, which must be kept in mind. Direct measurement at Steu- 

 benville shows the interval to the Pittsburg 550 feet. There the Upper 

 Freeport is present at 42 feet above the Lower and very thin. 



At Wellsburg, in Hancock county, 10 miles farther south, this Lower 

 Freeport coal bed is 320 feet below the Ames and 540 feet below the Pitts- 

 burg, with a 40-foot sandstone at 70 feet below it. From the Pittsburg 

 to the Pottsville at Wellsburg is only 739 feet, whereas at McDonald, 15 

 miles east-northeast, it is about 880 feet, there being loss in both Cone- 

 maugh and Allegheny, so that the latter is not far from 200 feet thick 

 in this area. No coal, aside from the Lower Freeport, is noted in the 

 Wellsburg record, but Doctor Newberry found thin lower coals on the 

 Ohio side where the Lower Freeport limestone is persistent. Wheeling, 

 in Ohio county, is about 10 miles south from Wellsburg and about 20 

 miles west from AVashington, in Pennsylvania. Three miles east from 

 that city a record shows 4 feet of coal at 530 feet below the Pittsburg and 

 resting on sandstone, thus : 



Feet 



Gray sandstone 45 



Coarse gray sandstone 83 



Fine white sandstone 408 



Gray and white sandstone 170 



this sandstone being continuous to the bottom of the Logan. The mass 

 number 3 is apparently homogeneous and the change to number 2 is so 

 marked that the upper 128 feet may be allotted to the Allegheny. The 

 coal bed at 530 is very probably at the Upper Freeport horizon, for the 

 Lower Freeport in the Wheeling well is at 556 feet. This interval of 26 

 feet is that between the Freeports at a little way north, where Professor 



