ALLEGHENY FORMATION IN OHIO 117 



Feet 



12. Putnam Hill limestone 



13. Brookville coal bed 



14. Tionesta sandstone [Homewood] 20 



The Brookville coal and its overlying limestone are present in perhaps 

 every township; the coal, according to Professor Wright, is from 1 to 

 2 feet thick and always poor; Mr Eead found it 3 feet 6 inches at one 

 locality. The Vanport is present as a gray limestone at several localities, 

 but in some townships it is represented only by tough more or less flaggy 

 sandstone. A Clarion coal bed underlies this limestone at many places, 

 usually very thin and never exceeding 2 feet. From the observations of 

 both Eead and Wright, it is clear that the Lower Kittanning is present 

 only in the southeasterly part of the county, and that westward and 

 northward the interval between it and the Middle Kittanning disap- 

 pears, permitting, as suggested by Professor Wright, the two beds to 

 come together. In the southeast the Middle Kittanning is 64 feet above 

 the Clarion coal and 83 feet above the Putnam Hill limestone, but on 

 the western border the interval to the limestone is but about 35 feet at 

 the most and to the Clarion only 22 feet. The interval in Wayne county 

 between Middle Kittanning and Putnam hill increased southwardly from 

 25 to 35 feet and the increase is continuous and gradual to southeast 

 Holmes. The Middle Kittanning is the important bed and shows the 

 same features as in Tuscarawas — double, with sulphur near the top, the 

 coal coking, ash purple, and the roof bone or cannel underlying the richly 

 fossiliferous black shale. The Freeport sandstone is massive ; the Lower 

 Freeport is but a blossom. Mr Eead states that the upper Freeport, 

 4 to 6 feet thick, is present on the western border at only 40 feet above 

 the Middle Kittanning and accompanied by a buff limestone. In the 

 southern part of the county the interval is 73 to 76 feet. Mr Eead re- 

 ports a black limestone in the eastern part of the county at 12 to 15 feet 

 above the Brookville.* 



Coshocton county is south from Holmes and west from Tuscarawas 

 and Guernsey. 



The Brookville coal bed and Putnam Hill limestone persist throughout 

 the county; the former is from a few inches to several feet thick, but it 

 seldom yields good coal, being so broken by partings as to be dirty, but 

 sometimes changing into cannel or cannel slate. At varying distances, 

 10 .to 30 feet, above the Putnam Hill is the "Black marble" overlying a 

 coal bed. Professor Hodge observed this limestone in five townships and 



* M. C. Read : Vol. iii, pp. 354-555, 557-558. 

 A. A. Wright : Vol. v, pp. 818-819, 828, 830-831, 836, 839, 840-842. 



