1897.] DRAKE — THE GEOLOGY OF INDIAN TERRITORY. 418- 



dred to four hundred feet above the base of the mountains, and that 

 on the north side of the mountains near the west end, probably 

 belong to this bed. Sans Bois mountains were not studied closely 

 enough to outline the coal outcrop. The final disappearance of 

 the Mayberry bed, under the westward dipping strata, is shown by 

 the coal outcrop located west and southwest of Enterprise. This 

 coal bed is being mined quite extensively in the east end of Cavaniol 

 mountain by the Kavanaugh Coal, Coke and Railway Company. 

 The bed at this place averages about three feet eight inches in 

 thickness and dips slightly to the southwest. On the opposite side 

 of the canon, from where it is worked and about one hundred and 

 forty feet lower, there is what appears to be another bed of coal. 

 This lower bed contains some shale, as is shown by the following, 

 section : 



FEET. INCHES. 



Coal 5 



Clay shale i * 



Coal I 



Shale 9 ' 



Coal 2 6 



The layers of shale found in this lower bed and its difference 

 in elevation indicate a different horizon from the one that is 

 being worked, but it seems possible, from the cursory examina- 

 tion made, that they may be the same bed. If they are not the 

 same bed, the lower or more shaly bed is probably a local deposit, 

 for but one coal bed of importance was found at other places over 

 the field at the horizon of the Mayberry coal. 



On the north side of Cavaniol mountain, at the original place of 

 discovery of the Mayberry coal, the beds show the following 

 sequence : 



FEET. INCHES. 



Coal I 5 



Clay shale 3 



Coal 8 



Clay shale 3 



Coal I lo 



This coal is a short distance above the fourth thick sandstone 

 bed of the Cavaniol mountains. 



A coal bed eighteen inches thick outcrops in the northeast end of 



