190 J. J. STEVENSON CARBONIFEROUS OF APPALACHIAN BASIN 



feet above the Cambridge limestone in Morgan county and overlying the 

 Cowrun sandstone, an important rock in northwest Morgan, where it is 

 the First oil sand of the Federal Creek and Buck Eun districts. It is the 

 140-foot sand of the Macksbnrg area and the Cowrun of Washington 

 county. An oil-well record given by Professor Bownocker in Union 

 township shows an almost continuous rod bed beginning at 33 feet above 

 the Ames and extending upward to 156 feet, to the place of the Pittsburg, 

 which is wanting. Only 6 feet of red shale are reported below the Ames, 

 and that limestone is 131 feet above the Cambridge, which is only 70 feet 

 above the Upper Freeport coal. It is worth noting that while the interval 

 from Ames to Cambridge has increased, that from Ames to Upper Free- 

 port is but 201 feet — only about 10 feet more than, in southern Mus- 

 kingum. The Cambridge is double in much of Morgan and at times 

 both divisions are flinty, but in several townships only the upper division 

 is present. The interval between the divisions varies from 5 to. 10 feet 

 and holds the Anderson coal bed. 



Professor Bownocker reports several oil records from eastern Morgan. 

 One at Browns Mill, near the southeast corner, shows the "Big Red" end- 

 ing at 4 feet above the Ames limestone, and the Cowrun sandstone, 29 

 feet thick, beginning at 92 feet below it. A red bed at 184 feet above the 

 Ames is very near the place of the Pittsburg coal. Seven miles west the 

 "Big Red," 125 feet thick, ends at 22 feet above the Ames, and another, 

 16 feet, ends at 40 feet above the Cambridge limestone. These reds are 

 very irregular, for in a well 4 miles farther west the only red between 

 Ames and Cambridge is 42 feet and ends at 65 feet above the Cambridge, 

 whereas in an adjacent well there are two beds 10 and 40 feet. In the 

 most western well coal is recorded at 165 feet below the Ames, 58 feet 

 below the Cambridge, evidently the Brush Creek, and black shale at 42 

 feet lower is very near the place of the Upper Freeport. The Conemaugh 

 in eastern Morgan is not more than 360 feet thick.* 



Noble county is east from Muskingum and Morgan, south from Guern- 

 sey. For the most part the Conemaugh is deeply buried, but it is brought 

 up by an anticline midway in the county. According to Professor An- 

 drews, the interval from Pittsburg to the Ames in the northwest portion 

 is 150 feet. Farther east on the Guernsey border this interval contains 

 two thin limestones at 46 and 54 feet above the Ames and another, very 

 thin, at the Pittsburg horizon. The Cambridge limestone becomes double 

 near the Guernsey line, a new, upper division making its appearance, 



* E. B. Andrews : Vol. i, pp. 295-297, 303, 305. 

 E. Lovejoy : Vol. vi, pp. 631-635. 

 J. A. Bownocker : Bulletin no. 1, pp. 134, 136, 142. 



