Ft. In. 



Clay, siliceous 1 10 



Ore, siliceous ] f . . 3 



Shale \- Harrison \ . . 1 



Ore, siliceous J [ . . 3 



Maxville limestone to 6 



SHARON ORE 



Stratigraphy and Extent 



The next fossiliferous member of the Pottsville formation above 

 the Harrison ore, namely the Sharon ore, is of very limited outcrop, 

 and with the exception of Mahoning and Trumbull counties, is found 

 only in the extreme southern part of Ohio, in the eastern part of 

 Scioto and Pike counties and in Jackson County. l The ore is very 

 patchy and uncertain, and where present, either lies directly on the 

 Sharon coal (Jackson Shaft coal, or Coal No. 1) or is separated from it 

 by not more than 15 or 20 feet of sandstone and shale. In Jackson 

 County it forms a deposit from 4 to 6 inches thick, while in Pike and 

 Scioto counties it reaches a thickness of 10 inches to 1 foot 6 inches. 

 The ore is buff or brown in color, highly siliceous, and coarse in tex- 

 ture, and is filled with numerous decomposed fragments of Missisippian 

 material. Living conditions during the period of deposition of the 

 Sharon ore were such as to support an abundant fauna, which, how- 

 ever, is small and dwarfed in aspect, owing probably to the high 

 percentage of iron which the waters contained. The fossils which 

 are for the most part well preserved generally occur as casts of the 

 interior as in the case of the Harrison ore. 



Description of Geologic Sections and Collecting Localities 



Scioto County. In Section 14, Porter Township, at the mouth 

 of Lick Run, the ore is exposed on the farm of Joseph Jenkins, where 

 it is extremely fossiliferous and furnishes good collecting material; 

 the fossils resemble to a marked degree those of the Harrison ore 

 both in species and condition of preservation. The deposit is brown 

 in color and contains much soft, light brown, chalky material formed 

 by the decomposition of inclosed pebbles. The section at this locality 

 follows: 2 



Pottsville formation Ft. In. 



Ore, Guinea Fowl 6 



Shale 3 



Covered 3 



Ore, soft, siliceous, Sharon, very fossiliferous 1 



Covered 3 



Shale 6 



Ore, with flint and pebbles, Harrison 1 



Waverly formation 



Sandstone, Vinton 22 



iStout, W., Geol. Surv. Ohio, Fourth Ser., Bull. 20, pp. 71, 455, 493, 1916. 

 'Idem, p. 494. 



12 



