NORTHERN AND WESTERN OUTCROP IN OHIO 83 



to the Upper Mercer coal bed as 119 feet. The Connoquenessing sand- 

 stones can be recognized wherever their place is exposed, but they show 

 much variation. At one locality Mr Hodge found the whole interval 

 between the Sharon coal bed and the Upper Mercer limestone, 130 feet, 

 occupied by an almost continuous sandstone, but in most places the 

 Upper sandstone is rather shaly. The Lower Mercer limestone is the 

 notably persistent member of the formation and occasionally it carries 

 chert; the Upper limestone is absent at some places, but not often, and 

 it* is accompanied by chert; its coal bed is a valuable cannel in two 

 townships. The Homewood is represented by shale almost everywhere.* 

 Small areas of Pottsville remain in Knox county, west from Coshocton. 

 The extreme thickness of the Sharon sandstone does not exceed 15 feet. 

 The general section in the eastern part of the county reaches to 235 feet 

 above the Sharon coal bed as follows : 



Feet. Inches 



1. Concealed 115 



2. Sandstone, thin conglomerate near bottom . 45 



3. Coal bed 2 to 1 6 



4. Shale 45 



5. Coal bed 



6. Sandstone 30 



7. Shale 10 



9. Coal bed 



The Sharon, Quakertown, and Lower Mercer horizons are marked by 

 coal ; another bed exists at 60 feet above the Lower Mercer, which may 

 be that associated with the Putnam Hill limestone, but the Mercer lime- 

 stone as well as the Putnam Hill have disappeared. The cherty lime- 

 stone occurring on some of the ridges at 100 feet above the highest coal 

 bed represents the Allegheny limestone. The whole thickness of Potts- 

 ville does not exceed 140 feet.f 



Muskingum county is south from Coshocton. Stevenson gives the fol- 

 lowing generalized section for the northern part of the county : 



Feet 



1. Putnam Hill limestone and coal bed 



2. Sandstone and shale 21 



3. Upper Mercer limestone. ... 2 to 3 



4. Upper Mercer coal bed ... 



5. Sandstone 10 



6. Lower Mercer limestone 1 



7. Lower Mercer coal bed 



8. Fireclay 



* J. T. Hodge : Vol. iii, pp. 571, 575, 576, 581. 

 E. Orton, Jr. : Vol. v, pp. 844, 853. 854, 859. 

 fM. C. Read : Vol. iii, pp. 335, 336. 



