EXTENT OF THE DENTER. 189 



conglomerate, which continues with a gradual eastward curve in its strike 

 to the banks of Bear Creek, opposite Mount Carbon. All outcrops which 

 arc found along this general line prove the presence of the Denver beds al 

 the points where the deductions from the known dip and thickness of the 

 lower formation would naturally put them. 



As has been shown by Mr. Eldridge in the preceding chapter, the 

 thickness of the Arapahoe strata in this region, as well as the location of 

 its upper limit, can be most beautifully shown in one of the ravines upon 

 the southwestern slope of the mountain. Hence the deduced position 

 of the base of the Denver formation with reference to the very persistent 

 exposures of Arapahoe conglomerate must be considered as nearly correct. 



The Arapahoe conglomerate can easily be traced to the bank of Bear 

 ('reek, opposite Mount Carbon, where it is very clearly shown, in vertical 

 position, close to the wagon road on the north side of the creek. A few 

 hundred yards down the creek is the mouth of Coyote Gulch, whose banks 

 show horizontal Denver strata. The fold is therefore very sharp here as 

 well as along' the base of Green Mountain. In following up the bed of 

 Coyote Gulch many most characteristic exposures of the Denver beds are 

 seen. 



Green Mountain. — The massive li 111 bearing this name is almost exclusively 

 made up of sandstones and conglomerates of the formation under discus- 

 sion. Only at its western base, as described in a preceding section, are 

 other series represented. Its peculiar form and gentle slopes result from 

 the ready disintegration of the loosely cemented strata. A casual observer 

 would scarcely think of referring the large, loose bowlders scattered over 

 its surface to immediately underlying strata, and outcrops which clearly 

 reveal this fact are rare, at least for the upper part of the mountain. Upon 

 the western face is the only cliff-like exposure of any extent Occurring, 

 and this has been described in foregoing pages in detail. The ravines 

 heading in the mountain mass all show minor outcrops in their beds, but 

 the smooth slopes are usually ddbris covered. After leaving the upper 

 slopes these ravines cut down into the finer-grained sandstones and con- 

 glomerates, giving evidence of the rock formation underlying the low. 

 grassy country about the mountain on the south, east, and north. 



