JEFFERSON COUNTY, 731 



forty feet below it No. 5 appears. About ninety feet above a coal out- 

 crop is seen, which probably indicates the place of No. 7. Still higher 

 are the crinoidal limestone and the Harlem coal. 



At Moretown three coal seams are seen, apparently the same as those 

 exposed at the Tunnel Mill. At Dorrance's the lowest is three feet 

 thick, with much sulphur, and bearing a strong resemblance to the 

 Roger vein. The next seam is fifty feet higher, and four feet thick, 

 netting over three feet of good coal. The loss is occasioned by a slaty 

 band at the top, a feature this coal has in common with the " Big Vein" 

 at Salineville, its probable equivalent. It contains, however, less sul- 

 phur here than is usually found in the "Big Vein." The upper seam, 

 sixty leet above the one last mentioned, is said to be twenty-eight inches 

 thick. 



At Nebo, the lower of the three seams mentioned is seen near the 

 level of the creek, and one mile west of this point it passes beneath it 

 and disappears. The upper two of the thin coals exposed below appa- 

 rently continue to the county line, but are shown only by outcrops. A 

 bed of light gray limestone appears midway between the lowest and 

 middle seam. 



In the Barren Coal Measures which form the hills west of the county 

 line, the crinoidal limestone is conspicuously shown, with its associated 

 strata, giving the following section : 



1. Olive shales and sandstone 70 feet. 



2. Coal (7c) 18 inches. 



3. Fire-clay 20 " 



4. Green and red shales 15 to 20 feet. 



5.. Crinoidal limestone 2 to 8 " 



6. CooZ (Harlem Vein) 30 inches. 



7. Fire-clay .■ 2 feet. 



8. Green shale and shaly sandstone 50 to 60 " 



9. Coal(7a) 1 " 



10. Olive shales. 



In the valley of Big Yellow Creek no Drift was found on the surface, 

 but a few transported bowlders were seen at a farmer's house, and are 

 said to have come from the bed of the creek. These were probably brought 

 down by some tributary of this stream reaching to the margin of the 

 Drift area. 



A few observations on the directions of the joints in the coal of this 

 region, made by Mr. G. K. Gilbert, give the following results : Two miles 

 below Salineville the main cleavage planes are N. 60° E. ; at New Salis- 

 bury and Irondale, N. and S. ; on Big Yellow Creek, near Brush Creek, 

 N. 50° E. 



