J70 STRATIGRArHY THE POTTSVILLE SERIES. 



THE MERCER (STOCKTON) COAL. 



The Mercer Coal, of the Second Geological Survey of 

 Pennsylvania, apparently correlating with the Stockton Coal 

 of White, 3 occurring in the Kanawha Group of the southern 

 counties, was noted at a few points in southern Lewis, but 

 appears to be too thin and slaty for commercial mining. In 

 the section for Bablin, published in Chapter IV, this coal is 

 0' 4" thick. Another prospect in the same region shows the 

 following : 



Coal Prospect No. 283 on Map II. 



On Cherry Fork of Little Kanawha River, 0.9 mile north of Ingo; 

 Mercer (Stockton) Coal; elevation, 1245' B. 



Ft. In. 



Sandstone, shaly 



Slate, black, Kanawha Flint 6 



Coal, bony 0' 6" 



Coal, good 1 10 2 4 



Slate, black, mixed with coal 4 



Coal opening, fallen shut, thickness concealed.. 



It is possible that this coal may be an intermediate seam 

 between the Lower Kittarining and the Mercer, as its interval 

 below the former seems too small. 



The blossom of the Stockton Coal was also observed on 

 a branch of the Little Kanawha, 0.8 mile northwest of Cleve- 

 land, at an elevation of 1460' B. A further description of this 

 coal appears in Chapter XI. 



THE UPPER COALBURG SANDSTONE. 



The Upper Coalburg Sandstone, first named the Coalburg 

 by White, 4 but later given its present title by Hennen and the 

 writer, 3 to distinguish it from the Lower Coalburg, is above 

 drainage along both forks of the Little Kanawha, but is not 

 prominent. So far as observed, it does not make any conspicu- 

 ous cliffs. 



3 I. C. White, Vol. 1I(A), W. Va. G. S., p. 469; 1908. 

 *I. C. White, Vol. II(A), W. Va. G. S., p. 468; 1908. 

 5 Logan-Mingo Report, W. Va. G. S., p. 137; 1914. 



