84 STRATIGRAPHY GENERAL SECTIONS. 



Thickness Total 



Feet. Feet. 

 Monongahela Series (270') 



Concealed 39 246 



Sandstone, massive, Uniontown (872' L.) 55 301 94' 



Concealed, with fire clay 13 314 



Sandstone, shaly, Arnoldsburg 20 334 



Shale, sandy 38 372 



Shale, red, with limestone nodules 34 406 



Sandstone, shaly, Upper Sewickley 14 420 



Shale, sandy 29 449 



Sandstone, shaly, Lower Sewickley 10 459 158' 



Concealed to Tanner Creek 18 477 



Glenville District. 



The following section was measured with aneroid de- 

 scending a high hill on the Troy-Glenville District Line to Col- 

 lins Run, 1.8 miles west of Baldwin. The section is a little 

 too far west to have the Pittsburgh Coal : 



Baldwin Section, Glenville District. 



Thickness. Total. 



Dunkard Series (95') Feet. Feet. 



Concealed from top of knob 35 35 



Sandstone, partly concealed, Waynesburg 



(1275' B.) 60 95 95' 



Monongahela Series (310') 



Concealed 35 130 



Shale, red 35 165 



Sandstone, shaly, Uniontown 5 170 75' 



Shale, red 40 210 



Sandstone, massive, coarse, with small peb- 

 bles, Sewickley 40 250 



Shale, sandy 10 260 



Sandstone, shaly 5 265 



Shale, red 9 274 



Limestone, hard, ferriferous, Sewickley 1 275 105' 



Shale, red 15 290 



Shale, sandy, and sandstone, shaly, interlami- 



nated, in steep bluff 100 390 



Concealed in bench, Pittsburgh Coal horizon, 



(965' B.) 15 405 130 



Conemaugh Series (150') 



Shale, sandy 5 410 



Sandstone, shaly, with sandy shale, Lower 



Pittsburgh Sandstone 35 445 



Shale, variegated 20 465 



Sandstone, shaly 10 475 



Shale, red and concealed 55 530 



Sandstone, massive, Connellsville 10 540 135' 



Shale, red and concealed, to Collins Run 15 555 



