740 GEOLOGY OF OHIO. 



exposures of it were seen, and' it has been but little used. No definite 

 report can therefore be made in regard to its economic value. 



A strong dip to the west and south begins at McCoy's Station. This is 

 strikingly shown by comparing the sections taken at McCoy's, and New 

 Cumberland, West, Virginia. 



The fire-clay of Coal No. 3 affords a convenient datum line, as it is a 

 strongly marked stratum, and is worked at many localities in this region. 

 At McCoy's this is forty-five feet above the river, while at New Cumber- 

 land it is one hundred feet above the same level. 



The following very incomplete section was taken by following up the 

 run from McCoy's to Taggart's farm, two miles west : 



. IT. IN. 



1. Hill tops with many fragments of buif limestone about 650 feet 



above the Ohio River. 



2. Concealed 81 



3. Coal outcrop. 



4. Concealed - 45 



5. Coal outcrop — strong. 



6. Concealed 99 



7. CoaJ, old opening 2 10 



8. Interval, chiefly sandstone and shale 234 



9; Coal, Taggart's (No. 5?) poor 2 



10. Fire-clay resting on nodules of ferruginous limestone 5 



11. Interval consisting of heavy masses of sandstone where exposed. 95 



12. Coal reported thin. 



13. Slate with nodules of iron ore 36 



14. CoalNo,Z 2 6 



15. Fire-clay 8 to 9 ft. 



Coal ,No 3 at McCoy's, averages abput thirty inches in. thickness, and is 

 of the usual rather inferior quality. Its underlying clay supplies material 

 to a manufactory of drain pipe and tiles. Immediatelj' over the coal is 

 a bed of shale containing balls of kidney ore, such as is usually found 

 between Coals No. 3 and No. 4, in the valle.y of Yellow Creek, below its 

 mouth, and on the north side of the Ohio. On the Virginia side of the 

 river this shale bed is replaced by a heavy mass of sandstone, which cuts 

 out Coal No. 4 just as at Smith's Ferry, and it is quite possible that those 

 two exposures are parts of the same sandstone belt, marking the line of 

 some current of water which swept the surface of this region after the 

 .formation of Coal, No. 4. All the coals in the vicinity of McCoy's Station, 

 so far as explored, are either thin or of poor quality. The " Strip Vein," 

 No. 4, is either thin or wanting, and the three higher seams of the lower 

 coal group show a marked degeneration as compared with their develop- 

 ment at the mouth of Yellow Creek, about five miles further north. Be- 



