DEVONIAN. 



Devonian formations in Pocahontas and Tazewell quadrangles. 



287 



Kindle' s collections from southwestern Virginia have shown that the typical 

 Chemung fauna extends southwestward as far as Bland County and that the greater 

 part of the Kimberling shale is the equivalent of the Chemung of New York.^^^ 



The portions of the Pocahontas and Tazewell quadrangles in which the preceding 

 sections were observed lie in southwestern Virginia. In the extreme southwestern 

 part of the State, 30 miles beyond them, is the Estillville quadrangle, which presents 

 the following section north of Clinch River according to Campbell : ^^' 



Devonian formations in EstillvUle quadrangle. 



" According to Kindle (personal communication) the Hancock limestone is of Silurian age in lower part and of 

 Devonian age in upper part. — B. W. 



