66 GEOLOGICAL SURVEY OF ALABAMA. 



No. 28 of the General Section, the top seam of this coal 

 field, has no distinctive name. Its position is about 30 feet 

 above the Bynum Seam, or 35 feet above the top of the 

 fourth conglomerate. It has only been dug into in one place, 

 where it was two feet thick. This may not be average thick- 

 ness for the seam, Its outcrop was seen in several places, 

 and its position satisfactorily obtained. It does not appear 

 to be well roofed in, and the coal is probably soft, neither 

 does it occupy quite as much space as the Bynum Seam 

 No. 27. 



The measures above the Bynum Seam are mainly com- 

 posed of irony shale and soft reddish clays, with very little 

 rock appearing on the suiface. Yet there may be in places 

 a sufficient roof of rock, or hard slate, to give this seam the 

 necessary protection against the disintegrating agencies of 

 nature, and make it of some commercial value. 



Above Coal Seam No. 28 there are rarely more than 20 or 

 30 feet of strata. The ridge which makes the top member 

 of the measures in this field is smooth-topped, with surface 

 gently undulating. It rises gently near the divide between 

 the headwaters of the Blackburn and Locust Forks, and 

 close to Straight Mountain, forming on its southwestern end 

 apparently a part of that elevation, but gradually separating 

 from it towards the northeast. Between this ridge and 

 Straight Mountain rise the extreme headwaters of the Gal- 

 vert Fork of the Little Warrior. This stream flows north- 

 east between this ridge and Straight Mountain to about 

 the middle of S. 8, T. 12, E. 3 E., where it has cut 

 through the latter, and pursues its southwest by west 

 course down Murphree's Valley. 



This ridge begins to rise higher towards the northeast, 

 near the Range line between Range 2 and 3 East, and its 

 rocks begin to show a distinctly quartzitic structure. It 

 probably attains its greatest elevation in S. 17, T. 12, R. 3 

 E., but there is no material diminution of its height to the 

 Hayse Gap heretofore mentioned, in section 9 of this town- 

 ship. It is again nearly cut through in section 3, same 



