ALLEGHENY FORMATION IN OHIO 119 



Muskingum county is south from Coshocton and west from Guernsey 

 and Noble. In the northern part of the county Stevenson recognized 

 both Freeport coals, the Middle Kittanning, and the Brookville. The 

 last is persistent, usually an inferior cannel, and varying in thickness 

 from 7 inches to 4 feet. The Putnam Hill limestone is often flinty and 

 usually carries some ore, but no trace of the Coshocton "Black marble" 

 appears in any of the sections. A coal bed appears in one township be- 

 tween the Middle Kittanning and the Putnam Hill limestone, 18 to 55 

 feet below the upper coal and it may be at the Lower Kittanning horizon ; 

 it certainly is wanting at many localities where the exposure of the in- 

 terval is complete. The Middle Kittanning shows the same features as 

 in Coshocton and is from 80 to 105 feet below the Upper Freeport. 

 The latter bed is worthless except in the eastern side of the county, where 

 it is mined. The interval to the Middle Kittanning increases east- 

 wardly. The Freeport sandstone at times fills almost the whole interval 

 to the Upper Freeport and occasionally is conglomerate.* 



The section changes somewhat in the southern part of the county, for 

 there the Upper Freeport and the Middle and Lower Kittanning coal 

 beds are each of them important within circumscribed areas and the 

 Brookville coal bed becomes irregular, being reported by Professor An- 

 drews from only three townships. It certainly is absent in many places 

 where the exposures appear to be complete. A coal blossom appears on 

 top of the Putnam Hill limestone in one section at Zanesville and the 

 Clarion coal is present at Zanesville as well as at some other places at 

 varying distances above the Putnam Hill. The Yanport limestone is 

 present at Zanesville as a nodular bed ; elsewhere it was seen by Professor 

 Orton, who describes it as drab, weathering yellowish white, fossiliferous, 

 and associated with iron ore. It is very near the place of the Coshocton 

 marble, which, according to Hodge, sometimes is drab and always is fossil- 

 iferous. It is at the place of the Lower Kittanning and is never seen in 

 this county when that coal bed is present. 



The Lower Kittanning is 65 feet above the Putnam Hill limestone at 

 Zanesville, but the interval decreases southward to 38 feet at Del Carbo. 

 Along this line the coal is from 3 to 5 feet thick and is mined; but 

 southward within 2 or 3 miles it disappears, and the Vanport lime- 

 stone reappears at 21 feet above the Putnam Hill; farther south on the 

 Perry County line the coal is again present and mined. Eastward from 

 this narrow area the bed is very uncertain. It is present in Washington 

 township east from Zanesville, and again in Perry, where Andrews reports 

 it as 2 feet thick and 3 feet above a sandy limestone and ore, evidently 



*J. J. Stevenson: Vol. iii, pp. 247, 240, 250, 234, 238. 



