94 J. J. STEVENSON — CARBONIFEROUS OF APPALACHIAN BASIN 



120 and 185 feet above the Quakertown and Sharon coals respectively 

 and 330 feet above the Lower Carboniferous limestone ; but in northern 

 Greenup and southwestern Carter, where the Sharon sandstone is absent 

 or very thin, the Sharon coal bed is but 44 to 60 feet above the limestone. 



Near the mouth of the Little Sandy river, on the Ohio, the Quaker- 

 town coal bed is shown between the Connoquenessing sandstones at 76 

 feet above the Sharon coal, and at 44 feet below the latter is the Jackson 

 Shaft coal underlying the Sciotoville clay. At a few miles south, on the 

 west side of the river, the section exhibits the Main Block ore, with 

 below it the Mercer coal bed at 35 feet, the Quakertown at 112 feet, and 

 the Sharon at 189 feet, the Quakertown being double, with 8. feet of sand- 

 stone and shale between its " splits," so that the interval from the lower 

 split to the Sharon coal is but 65 feet. As the Mercer coal is ordinarily 

 double, Lesley called it the " Twin coal." The Lower Block ore of this 

 region is not the same with that of Ohio, being in the Lower Connoque- 

 nessing sandstone. " Coal number 4," of the Kentucky survey, here 

 identified with the Tionesta, is the Hunnewell cannel of Greenup, as was 

 recognized long ago by Professor Orton. It is prominent on several 

 streams entering from the east and is at somewhat less than 100 feet 

 below the Ferriferous limestone and 38 feet above the Mercer coal bed. 

 The Mercer limestones are not in the section, but a thin, blue, silicious 

 limestone is shown in one section of western Greenup at 145 feet above 

 Avhat seems to be the Sharon coal bed, and apparently the same limestone 

 is shown in northern Carter, where the interval is 160 feet. 



The interval between the Sharon and Mercer coals in northern Greenup 

 is from 150 to 160 feet, but it increases southwardly, so that in northern 

 Carter it is 180 to 231 feet. In southern Carter the Sharon and Quaker- 

 town are 90 feet apart and the latter is cannel. The Mercer is still 

 double and in southern Carter one of the benches is cannel. The Tionesta 

 is easily traced across Carter into Elliott, but it varies greatly in thick- 

 ness and quality.* 



In Elliott county, south from Carter and east from Rowan, the bottom 

 of the Pottsville is reached on some branches of Little Sand} 7 , and beds 

 overlying the Sharon sandstone are shown in the highlands. At locali- 

 ties examined by Professor Crandall, the conglomerate replaces the lower 

 beds and rests on the Lower Carboniferous. Mr Lesley reports the Jack- 



* Joseph Lesley : Fourth Report of-the Geol. Survey of Kentucky, 1S61, pp. 459, 460, 462, 463. 



A. R. Crandall : Geol. Survey of Kentucky, Eastern Coal Field, vol. C, 1SS4, pp. 10, 29,33, 36, 47, 

 48, 49, sections 1, 4, 5, 7, 8, 9, 19, 20. Vol. C is a reprint. Professor Crandall's report was published 

 in Reports, new series, vol. ii. The intervals given in the text may not be altogether exact, as 

 they were obtained by measurement of the diagrams. This remark applies to almost all measure- 

 ments quoted from reports of the new series. 



P. N. Moore : Geol. Survey of Kentucky, new series, vol. i, pi. 4, sec. 4. 



