NORTHERN AND WESTERN OUTCROP IN OHIO 91 



alent in shales and sandstones remains ; for at 4 or 5 miles south from 

 the southwest corner of Jackson he found the interval from Blue or 

 Lower Mercer limestone to the Logan 194 feet, and a section near by 

 shows the Quakertown and a sub-Sharon coal at 68 and 176 feet below 

 the limestone, with much sandstone in the partially exposed interval 

 above the lower coal. This lower portion is persistent westward to the 

 outcrop, for the " Guinea Fowl " ore at 30 to 40 feet from the bottom 

 persists to the western outcrop in this county, which, however, is much 

 east from the western limit of the basin. 



The Franklin, " Main," or " Big Red block " ore, marking the horizon 

 of the Upper Mercer limestone, is present at 105 feet below the Ferriferous 

 limestone, and at 24 feet lower is the " Little Red block " ore represent- 

 ing the Lower Mercer limestone. Professor Andrews reports the lower 

 limestone in Vernon township with a thin coal below it. Professor 

 Orton says that the Tionesta, lying above the Franklin ore, is fairly per- 

 sistent, but is represented ordinarily only by streaks of coal distributed 

 through 10 to 20 feet of shale, though occasionally it becomes concen- 

 trated so as to be of workable thickness. 



Doctor White reports a section obtained by himself at Hanging Rock, 

 in the southern part of the county, which must be given without change : 



Feet. Inches 



1. Massive sandstone 40 



2. Fireclay 5 



3. Limestone and ore, Upper Mercer 1 



4. Shales 20 



5. Upper Mercer coal bed 4 



6. Sandy fireclay, shale, and sandstone 18 



7. Lower Mercer coal bed and clay 3 1 



8. Fireclay and shale ... 5 



9. Upper Connoquenessing sandstone 30 



10. Sandy shales and sandstones 15 



11. Quakertown coal bed 2 1 



12. Fireclay and sandy shale 20 



13. Lower Connoquenessing sandstone, massive 25 



14. Shales 40 



to which must be added 40 feet to the bottom of the Pottsville, as shown 

 in a well record at Hanging Rock. This is on the Ohio river, several 

 miles below the mouth of the Little Sandy river, in Kentucky. The 

 lower or Sharon sandstone portion of the column has disappeared. 



The section exposed in Lawrence county, east from Scioto, extends 

 downward only to the Tionesta, which is known here and in northern 

 Kentucky as the " Hunnewell cannel." An oil-well record at Ironton, 

 on the Ohio, a few miles below Hanging Rock, shows the Quakertown 



