KEGISTER OF LOCALITIES. 527 



2300. Crested Butte district; Maroon formation, lower part. From float in the vicinity of 2299. 

 G. H. Eldridge, 188.5. 



2301. Rico quadrangle; Hermosa formation. Iron mine, Silver Creek, Rico, Colo. Middle portion 



of the Hermosa formation. 

 H. S. Gane, 1896. 



2302. Crested Butte district; Maroon formation, lower part (?). Northern slope of the long spur just 



north of Round Jlountain Creek, and on one of the secondary spurs running northward 

 from this to the gulch passing into East River Valley between Red Mountain and Cement 

 Creek. From a band of gray limestone just west of the first prominent limestone conglomerate 

 ridge east of the long Trias quartzite forming a ridge running up to Cement Spur. 

 G. H. Eldridge, 1885. 



2303. Crested Butte district; Maroon formation, lower part (?) . From another Carboniferous limestone 



band 50 feet west of 2302 and above it geologicall}'. 



G. H. Eldridge, 1885. 

 2.304. Crested Butte district; Maroon formation, lower part. On the eastern slope of Round Moun- 

 tain, descending into Round ^Mountain Gulch. From a band of Carboniferous limestone 

 west of a prominent bed of limestone conglomerate. 



G. H. Eldridge, 1885. 



2305. Crested Butte district; Maroon formation, lower part. From a float piece of Carboniferous 



linestone on the high Trias quartzite ridge north of Cement Creek. 

 G. H. Eldridge, 1885. 



2306. Crested Butte district. Same as 2305. From limestone pebbles forming a prominent limestone 



conglomerate (Maroon series) about 285 feet thick, occurring about one-third the way up 

 this hill. 

 G. H. Eldridge, 1885. 



2307. Crested Butte district; Weber limestone. On a spur running from the ridge on which locality 



2305 is situated. From a limestone quite low down geologically and topographically, which 

 is overlain by about 20 feet of limestone similar to it, and then by papery black shales about 

 30 feet thick. 

 G. H. Eldridge, 1885. 



2308. Crested Butte district; Weber limestone. Same section as 2305. From the lower part of 



the section, not far above the main Eocarboniferous limestone, in the dark shale and dark 

 cherty limestone. 

 G. H. Eldridge, 1885. 



2309. Rico quadrangle; Hermosa formation. Rico, Colo. Carboniferous limestone under sandstone. 



One hundred feet above shop at iron mine, Silver Creek. 

 C. W. Purington, 1896. 



2310. Crested Butte district; Maroon formation, lower part. On iiiain ridge running northeast and 



north from Cement Peak, one-sixth the way from Cement Peak to Deadmans Gulch. From 

 a limestone in a series of sandstones and conglomerates considerably above the black shales 

 and Eocarboniferous limestones geologically. 

 G. H. Eldridge, 1885. 



2311. Crested Butte district; Maroon formation, lower part. Close to 2310, but a little west of it. 



Geologically a little lower than the latter, but with the same association of sandstone and grits. 

 G. H. Eldridge, 1885. 



