698 



GEOLOGY OF OHIO. 



making the identification of the coal above the last and that mined at 

 Carbondale quite positive. So that if the coal which plunges beneath 

 the valley west of Carbondale hill is the Great Vein, this coal is certainly 

 about fifty feet below the Carbondale coal, and of this fact I have very 

 little doubt. It is true that by the barometer it is only five feet above 

 this last outcrop of the Great Vein to the west, but the average dip to 

 the ea.st fully accounts for this fact. This Carbondale coal is much split . 

 up, varies greatly in thickness, and is more melting and more sulphury 

 than the average of the Great Vein. The following is a section of the 

 thickest part measured by me : 



liT. IK. 



Sandstone. 



Shale -• 1 to4 



Coal 8 



Shale , 4 to 6 



Coal 2 6 



Shale 1 to 2 



Coal : 6 



Fire-clay. 



One mile below the mouth of Meeker's Run one exposure of the Great 

 Vein made by a railroad cut shows that the sandstone has cut away the 

 upper part of the coal. But in the greater part of York township there 

 is a body of shale above the coal, and the latter often reaches a thickness 

 of eight feet. South-easterly it gradually passes below the surface, and 

 is reached only by shafting. 



The following sections illustrate the local peculiarities of this coal in 

 different parts of the field when no part of the coal originally deposited 

 has been removed by erosion : 



MagiBnis's Bank, Gaver's Mill, Akron Iron Cosapany, 



Straitsville. Salt Lick townsuip. Monroo township. 



ShalB. KSiS Shale. li^^^Sl Shale. 



Coal, 8 in. 

 Shale and pyrites, 



' r. 1^ l.";^ A ■ WBBBBSS croai, 3 ft. ii in. 



Coal, 2 ft. 4 in. i^MBaBBraa ■ 



„ . . -.- , ,,.i_.i.iii Clay partinff, i in. 



Coal, 6 ft. 10 in. mmOBBM Coal, 10 in. 



Clay parting, 1 in. ^hB^B ^'>'''°' ^^ ^'>' 



Coal, 1 ft. lOJ in. 



ct 1 ot i. . . HH^^Bh Coal, 5 ft. 10 iu. 



Shale, 3i to 4 m. ^m^^mx^ " 



Coal, 1 ft. 8 in. 



Shale, S to 3 la. _____„ 



Shale, } in. 

 „ , „, .. Coal, 4 in. 



(^o»l> ^ ^' HMHH ' Shale, i in. 



Coal, 2 ft. 9 in. 



