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 isa 
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: 
1. Hill tops with many fragments of buff limestone about 650 feet a te 
above the Ohio River. 
Qi reConcealed seein ses se ceo SUN he e aae Sas eel een sm Rea . 81 a 
3. Coal outcrop. 
As Concealed ero. see cas amciinccccscemessncsceesencetecseeee eee eee 45 
5. Coal outcrop—strong. 
6: \Concealed. :2e/itige fe sec tis ce recs emo cltienicteeete Sayeisneee oe eee 99 “i 
dy (Coal oldlopening, acc neseccities seciven stesso eoleaestee eee eee 2 10 
8. Interval, chiefly sandstone and shale ...-....---..--.......-..-.. 234 ui 
SE COLA Are es) (ONKOL) JNO! 5550 0500 585008 6400 B00 6500 6 bO5500 2 6 
10. Fire-clay resting on nodules of ferruginous limestone...-....---. 5 a 
11. Interval consisting of heavy masses of sandstone where exposed. 95 ae 
12. Coal reported thin. 
13), Slate with nodules of iron’ore -2-. 2.2. <2. --5- eee ee eee oeecee 36 is 
ES COWHIDE 8) E555 G5 O6GG GOGO POOGOS BOO 606 BA00 060050 0005 00000000006 2 6 
15, Fire-clay ---. --.- ------ ---- 2222 eee eee nes eee eee eee ee eee ee — 8 tod ft. 
Coal No 3 at McCoy’s averages about 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. Immediately over the coal is 
a bed of shale containing balls of kidney ore, such as is usually found 
between Coals No. 8 and No. 4, in the valley 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- 
