ALLEGHENY FORMATION IN KENTUCKY 129 



non-fossiliferous throughout Kentucky. It is accompanied, as in Ohio, 

 by an important iron ore; this at one locality in Elliott county is so 

 loaded with quartz pebbles as to be worthless. Eastwardly the Vanport 

 limestone disappears along the Ohio river at about 4 miles below Catletts- 

 burg, and its eastern limit appears to be a line extending almost due 

 south from Ashland on the Ohio for about 30 miles into southern Law- 

 rence, beyond which information is lacking. The ore persists eastwardly 

 for a short distance beyond the limestone, but it too disappears before the 

 state line has been reached. 



The Clarion coal bed is wanting along the Ohio river; the Brookville 

 is missing in a section below Hanging Rock, but is present near Tronton 

 and persists thence to where it passes under the river. It is not reported 

 at Catlettsburg on the state line. The Clarion (Hecla) sandstone over- 

 lies the Brookville and in one section fills the whole interval to the Van- 

 port limestone. The Lower and Middle Kittanning, Lower and Upper 

 Freeport coal beds are apparently persistent along the Ohio border, but 

 the only one holding its thickness is the Lower Kittanning. The Middle 

 Kittanning, 7 feet thick at Ironton, becomes a mere trace at Catletts- 

 burg, while the Freeport beds are thin everywhere. A massive sandstone 

 overlies the Lower Kittanning and near the West Virginia border an- 

 other underlies it, no doubt continuous with the Clarion, as the Vanport 

 limestone has disappeared. 



Along the western outcrop in Greenup, Carter, Elliott, Morgan, and 

 northern Breathitt the exposed section rarely extends much above the 

 Vanport horizon, though occasionally it includes the whole formation. 

 In Greenup and Carter the Clarion coal bed appears occasionally directly 

 under the Vanport limestone and resting on the Clarion sandstone; bat 

 the bed is so irregular throughout that it is not included in the numbered 

 scale. The Brookville is present in those counties wherever its horizon 

 is exposed, but in Elliott no trace of it has been discovered, and there is 

 no certainty that it exists in Morgan; there seems, however, to be no 

 doubt respecting its presence in northern Breathitt, where Mr Hodge's 

 sections showing the Vanport limestone are sufficiently clear. In that 

 county it is from 20 to 50 feet below the limestone, the interval varying 

 as in Carter county. At one place it seems to be triple, the benches in a 

 vertical space of 20 feet, and the interval to the Vanport is filled with 

 sandstone, the Clarion. The Brookville, usually either cannel or splint, 

 rarely attains economic importance. 



The Kittannings seem to be traceable into Elliott and the Middle is 

 occasionally workable. The Lower Freeport, usually thin, apparently 



XII — Bull. Geol. Soc. Am., Vol. 17. 1905 



