WEST VIRGINIA GEOLOGICAL SURVEY. l6l 



Thickness Total 



Feet. Feet. 



Fire clay and shale 15 65 



Sandstone, massive, coarse, gray, Lower Free- 

 port, upper division 30 95 



Coal, Upper Kittanning 5 100 



Fire clay and shale 10 110 



Sandstone, massive, coarse, gray, Lower Free- 

 port, lower division 60 170 



Shale, sandy 22 192 



Coal, Lower Kittanning 8 200 



Fire clay and shale 10 210 



Sandstone, massive, Clarion 30 240 



Fire clay and shale 10 250 



Sandstone, massive, Homewood (top of Pottsville) 



The three lower formations of the series are lenticular 

 and often fail to appear in the measures, leaving the Lower 

 Kittanning Coal directly above the Homewood Sandstone. 



DESCRIPTION OF FORMATIONS. 



THE UPPER FREEPORT COAL. 



The Upper Freeport Coal of the First Geological Survey 

 of Pennsylvania, lying at the top of the Allegheny Series, 

 and being an abundant source of fuel in some of the northern 

 counties of the State, where it has a persistent and easily rec- 

 ognized bed-structure, fails to reach a corresponding devel- 

 opment in Lewis. In the region of its outcrop, it is frequently 

 represented only by a blosssom, and in those places where 

 it occurs in minable thickness has little resemblance to that 

 noted in previous Reports, usually lacking the big slate and 

 the lower bench of coal. Its areal extent, character and thick- 

 ness, together with such mining sections as are available, will 

 appear in Chapter XI, under the subject of "Coal." 



THE UPPER FREEPORT LIMESTONE. 



The Upper Freeport Limestone, named by the First Geo- 

 logical Survey of Pennsylvania from its occurrence in the 

 same locality as the Upper Freeport Coal, is almost wholly 

 absent in Lewis. Its presence is noticed in the Jewell Sec- 

 tion, published in Chapter IV, where it is one foot thick. At 

 other points w r here its horizon is exposed, it was not observed. 



