668 GEOLOGY OF OHIO. 



at this point, and deposited over the lower bench these fifty-two feet of 

 sandy shale, above which there was again deposited patches of coal on 

 the horizon of upper benches of the Great Vein. An opening in the 

 Great Vein, on Section 5, Pleasant township, where it is in its proper 

 position below the sand-rock, and a little north of the place where it as- 

 sumes its normal thickness, tends to confirm this conclusion. It is there 

 very irregular in thickness, in two benches, with compact sandstone 

 parting. A section is as follows : 



FT. IK. 



Sandstone. 



Sandy shale - 6 to 8 



Coal Hto3 .. 



Sandstone -. 3 



Coal 2 to4 .. 



South of this point, it assumes all of its best characteristics, and ap- 

 pears a little above the bottom of the valleys, in thickness from nine to 

 thirteen feet, and dipping to the south-east a little faster than the fall of 

 the streams, so that in the south and east parts of Monroe, it is found 

 beneath the surface of the lowest valleys. In the east part of South 

 Lick township, it is somewhat thin and higher up in the hills, so that 

 it is there easily accessible by drifting. 



The following is a section of this coal on Benjamin Saunders's land, 

 Section 19, Monroe township : 



FT. IX. 



Coal 3 1 



Shale 2 to 3 



Coal '. 5 4 



Shale 2 



Coal ■. 4 



On Rector's Fork is a very fine exposure of the coal, where the stream, 

 for a long distance, has cut away the upper and most of the middle 

 bench, and flows upon a solid bed of coal. 



The three benches here measure as follows : 



rr. IS. 



Upper bench 3 10 



Middle bench , 5 6 



Lower bench 3 



In the south-east quarter of Section 24, Salt Lick township, and on 

 the margin of the old channel of erosion, is an exposure of the coal, of 

 which the following is a section : 



FT. IN, 



Sandstone. 



Coal 2 10 



Shale 1 to2 



Coal 2 11 



