408 DRAKE — THE GEOLOGY OF INDIAN TERRITORY. [Sept. 3, 



around that anticline. This outcrop has been prospected along 

 most of its length at intervals of one-fourth to one-half mile. 



West of Ward the coal is four to five feet thick and dips 25°. 

 Southwest of Ward, at the Coleman place, a well passes through 

 six feet and two inches of coal, including a parting of very 

 shaly coal one and a half inches thick, two feet from the top. 

 One-half mile further south the co^l is said to be five and a 

 half feet thick. The dip of the coal bed increases slightly toward 

 the south for a mile or two. South of Bokoshe it is about 

 four feet thick and dips 25°. One and a half miles east of Milton 

 the coal is three feet eight inches thick. A half mile south of 

 Milton, at the Ward Brothers' coal bank, the coal bed is parted by 

 twelve to eighteen inches of shale; the upper stratum of coal is 

 twenty-six inches and the lower forty-four inches thick. Gray clay 

 shale underlies and overlies the coal. A half mile further west the 

 coal bed is parted by five inches of shale, the upper stratum of 

 coal is twenty-two inches thick and the lower four feet two inches 

 thick ; the dip is 23°. A half mile still further west the upper 

 stratum of coal is twenty-eight inches thick, the shale parting 

 three inches ; only about four feet of the lower stratum of coal was 

 seen, and the bed is a little thicker than that; dip of bed 22° S. 



Farther to the west the coal slightly decreases in thickness, 

 while eastward and northward on the north side of the loop it 

 decreases rather rapidly, until it. is about eighteen inches thick west 

 of Bokoshe, and about fourteen inches thick northwest of Bokoshe. 



This coal bed dips southward under the Sugar Loaf, Poteau, 

 Cavaniol and Sans Bois mountains and comes to the surface again 

 on the south side of those mountains, as shown in Sees, i, 2, 3 

 and 4. The coal bed along this south line of outcrops is often 

 split by partings varying in thickness from a few inches to fifty feet, 

 and several thin strata of coal are common near the main bed. The 

 following section, from a railway cut one and a quarter miles south 

 of Heavener, shows the nature of this coal group at that and a 

 number of other places : 



FEET. INCHES. 



Shale 2 



Coal 8 



Shale 15 



Shaly coal i 



Shale and streaks of coal 5 



