ASHLAND COUNTY. 



623 



where, it is probable, the ravines reach the lowest rocks exposed in the 

 county : 



Sandstone and shale. 



Coal 1 to 3 



Fire-clay and shales, locally conglomerate ( 10 ft.) 20 



Olive shales 270 



Waverly conglomerate 130 



^:^= s-^=^-^-^ i z'-^ i3 Argillaceous shale (exposed) . 



20 



These rocks are all exposed within a short distance of the junction of 

 the Clear Fork with the Mohican, where a well was sunk for oil several 

 years ago. The whole section between the lower coal and the Huron 

 shale, according to this section, supplemented by the log of this well, is 

 as follows : 



FT. 



Coal No. 1 1 to3 



Fire-clay shale and conglomerate 20 



Olive shales 270 



Waverly conglomerate 130 



Argillaceous shales 20 



Not determined (earth at month of vreU) 5 



Sandstone 9 



Hard shales 85 



"Soap stone" 60 



Hard shales - 3 



Light shales 30 



Bed "soap stone" (full of gas) 12 



Shale, with hard bands 385 



Light gray sandstone 14 



Sandy shales 176 



Gray sand-rock 9 



Gray shales 40 



Blackshale - 40 



Whole section below coal 1,416 



Whole depth of well 976 



Interval between lower coal and top of Huron shale 1,376 



