KENTUCKY 1 1 



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mation, while at somewhat more than 600 feet above the Elkhorn 

 (Mercer) coal bed is a fossiliferous limestone, which appears to be per- 

 sistent. These three deposits of the Allegheny formation will prove 

 serviceable in the effort to make correlations along the eastern outcrop 

 in southwestern Virginia* 



The area beyond Pine mountain will be considered in connection with 

 southwestern Virginia. 



Returning now to the southwestern area, the line may be taken in 

 Laurel and Whitely counties, answering to northwestern Breathitt, 

 where the intervals are not so great as in the eastern counties and the 

 " Licking shales " are not so greatly developed. The intervals which 

 had become so extreme in Clay persist southward into Knox, as appears 

 from a section given by Professor Norwood ;f but they decrease rapidly 

 westward, so that in Laurel, west from Knox, one finds the intervals not 

 very different from those in Wolfe and Breathitt. Nothing is available 

 for this area except a mere reconnaissance, which suffices merely for 

 recognition of the general horizons. 



Professor Crandall places the first workable coal bed at 50 to 75 feet 

 above the top of his Rockcastle group, the great upper conglomerate of 

 that group being the a Corbin lentil" of Mr Campbell. This Laurel 

 coal bed he identified with number 1, which is sufficiently consistent 

 with the tracing along the western outcrop. It is shown in Laurel 

 county practically to the Knox border in the deep valley of a fork of 

 Cumberland river, so that a series of sections should be possible in 

 Knox county by which to settle all questions relating to the equivalency 

 of the higher beds. 



The third workable bed is known as the " Jellico " and is at about 

 200 feet above the Laurel, while at about midway between the two is a 

 cannel which attains much importance locally. These intervals suggest 

 that the three beds may be at the Sharon, Quakertown, and Mercer 

 horizons. At 75 to 100 feet above the Jellico is a splint coal bed, the 

 interval being filled mostly by sandstone. This higher bed, the Cadell, 

 is described as semi-cannel, free-burning. It underlies another bed, 72 

 feet higher. This section suggests that the higher beds are the two 

 splints, numbers 4 and 5. • 



The calcareous concretions and bands, which in the central and 

 northern counties belong to the horizon of coal beds 1 and 2, extend 

 here through more than 200 feet vertically and are found even in the 



*A. R. Crandall : Preliminary Reports on Southeastern Kentucky Coal Field, 1887, pp. 14, 15, 18, 

 28. 

 fC J. Norwood : Report of Inspector of Mines for 1893, p. 112. 



