NOMENCLA TURK OF THE OHIO FORMA TIONS 525 



The name was apparently preoccupied, however, when used 

 by Campbell and Mendenhall, for in 1877 Franklin Piatt, in his 

 classification of the rocks that would be penetrated by a well ten 

 miles in depth near Waynesburg in southwestern Pennsylvania, 

 proposed the name " Kenawha (as he spelled it) river system," 

 from the river of that name in West Virginia, division b of which 

 he called the " Kenawha Coal-measures."^ The Pottsville con- 

 glomerate formed the upper part of the Kenawha river system 

 and the Mountain limestone its base, so that the rocks were all 

 older and below the Kanawha formation of Campbell and Men- 

 denhall. In case it is held that Piatt did not define this division 

 with accuracy, and that the Kanawha formation of Campbell and 

 Mendenhall ought to be accepted by prescription, then it is to 

 be remembered that the name "Kanawha black flint" was defi- 

 nitely applied by Dr. \. C. White to a subdivision of the Barren 

 Measures, or Elk River series, in 1891.^ 



In reference to the correlation of the Kanawha and Alle- 

 gheny formations, it may be said that Dr. David White has 

 studied the flora of the Kanawha formation in its typical region, 

 and claims that the lower portion is older than the Allegheny 

 formation; 3 while the flora of its upper part is "probably not 

 higher than the Clarion group in the Allegheny series. "^ Xhe 

 horizon of the Upper Freeport coal, the top of the Allegheny 

 formation, is indicated as between 200 and 300 feet above the 

 Kanawha black flint. ^ 



This paper has been very positively answered by Dr. I. C. 

 White, who says : 



During the present year (1901) I have attacked the problem in question 

 by direct tracing of the Upper Freeport coal and its associated strata from 

 the Pennsylvania line along their eastern outcrops across to the Kanawha 

 valley. In this I was entirely successful, and the result is a complete con- 

 firmation of my original conclusion with reference to the horizon of the Upper 

 Freeport coal on the Great Kanawha, namely, that it is the first one below the 

 black-flint stratum, and hence this latter member belongs near the base of the 



^Second Geol. Surv. of Pa., H ^ , pp. xxiv-xxvii. 

 ""Bull. U. S. Geol. Surv., No. 65, p. 98. 

 ^Bull. Geol. Soc. Amer., Vol. XI (1900), pp. 165-67. 

 '■Ibid., p. 170. ^Ibid., pp. 173, 178. 



