Mercer Limestone in Newark-Zanesville Region 



293 



14. Thin bedded shale, black at the base but changing 

 to light buff or gray at the top and becoming 

 more sandy. 

 13. Thin black shale with numerous horizons of ore nod- 

 ules, the most distinct being a two-inch layer six 

 inches from the base, and a one-half to one inch 

 layer ten inches from the base. 

 12. Black bituminous shale. 

 11. Impure coal. (Wellston coal?). 

 10. Black bituminous shale. 



9. Light gray argillaceous shale, brownish when weath- 

 ered; with some lenses of coal toward the top. 

 8. Heavy, cross-bedded, gray or buff sandstone, weath- 

 ering brown. (Lower Massillon?). 

 7. Thin shale, black at the base, light gray at the top. 

 6. Black shale with nodules of iron ore. 

 5. Thin black shale. 

 4. Black shale with nodules of iron ore. 

 3. Impure blocky coal with shaly partings in the lower 



part. (Sharon coal?) 

 2. Black bituminous shale. 



1. Covered interval, to Maxville limestone in the bed of 

 the stream near the railroad bridge. 



Wortman's Ravine. On the south side of Jonathan creek 

 directly opposite Stonehouse Hollow is another ravine where the 

 Mercer limestone is exposed. In this ravine the interval between 

 the Homewood sandstone and the Mercer limestone is much re- 

 duced, not exceeding 8 feet, and in one place being only one foot. 



