C)O STRATIGRAPHY GENERAL SECTIONS. 



Vadis Section, Freemans Creek District. 



Thickness Total 



Dunkard Series (45') Feet. Feet. 



Concealed, with red shale, from top of knob. . 17 17 



Sandstone, massive, pebbly, buff, Waynesburg 28 45 45' 

 Monongahela Series (371') 



Concealed 53 98 



Sandstone, flaggy, green, Uniontown 25 123 



Concealed 15 138 



Spring, Uniontown Coal horizon 138 93' 



Concealed, with red shale, nodules of lime and 



fragments of red hematite 60 195 



Sandstone, greenish, fine 10 208 



Concealed in slope, mostly red soil 78 286 



Sandstone, massive, coarse, gray, Sewickley. . 10 296 158' 



Concealed 11 307 



Steep bluff, mostly sandstone 94 401 



Sandstone, massive, visible 3 404 



Shale, sandy 7 411 



Coal 1' 7"] Pittsburgh (5' 1") (836' L.) 



Bone 1 [(Claude F. Griggs Mine.. 5 416 120' 



Coal 3 5 ) No. 143 on Map II) 



Conemaugh Series (65') 



Concealed 35 451 



Sandstone, massive, gray, to Fink Creek, 



Lower Pittsburgh 30 481 



In the following section, the surface portion was measured 

 with aneroid, starting at a high knob 2 miles southeast of Alum 

 Bridge and descending to Leading Creek. Owing to the 

 northwestward rise of the rocks, these intervals are somewhat 

 smaller than true vertical measurement would show. The 

 lower portion is from the record of the R. Gissy No. 158 (342) 

 gas well drilled by the Reserve Gas Company, 65 feet being 

 omitted from the top of the record to make the stratigraphic 

 succession complete. The total depth of the hole was 2675 

 feet: 



Alum Bridge Section, Freemans Creek District. 



Thickness Total 



Monongahela Series (300') Feet. Feet. 

 Sandstone, massive, coarse, pebbly, soft, great 



cliff rock, capping knob, Uniontown 40 40 40' 



Concealed in slope, with sandy shale 35 75 



Concealed in bluff 20 95 



Concealed, mostly red shale 65 160 



Sandstone, massive, buff, pebbly, soft, cliff 



rock, Sewickley 50 210 



Shale, sandy, with streaks of sandstone 53.5 263.5 



Coal (T 6") Redstone 1.5 265 225' 



