528 OARBONIKKBOUS FORMATIONS ANJ) FAUNAS OF COLORADO. 



2H12. Crested Butlo ilistrict; Wel)er liineHtdiie. On winio i-iiljic as 2;!l() ami 2:!ll. < icoloi^ically just 

 below the black shale, inthoujiper iiieiuber of I lie l)lai'k, cherty limestone series which over- 

 lies the ]<Iocarboiiiferoua liuK'stone. 

 U. H. Eldridge, 1885. 

 2.il;i. Oreste<l Butte district; Weber limestone. Same as 2:^12 and about 10 feet below it. 



(,i. H. Eldridge, 1885. 

 2H14. Crested Butte district; Weber limestone. Branch of Cement ('reek containinf.' mines. From 

 the d(5bris of the lower black slate series. One of the linie.stones containe<l in the series. 

 G. H. Eldridge, 1885. 



2315. Same locality and about the same horizon as 2314. 

 ■ G. H. Eldridge, 1885. 



2316. Crested Butte district; Weber limestone. On west side of first gulch west of Cement Creek, 



running south from steep part of Double Top. Well down in gulch. From a blue limestone 

 seemingly between the yellow grits and the great red conglomerate and limestone conglom- 

 erate beds of the upper series. 

 G. H. Eldridge, 1885. 



2317. Crested Butte district; Maroon formation, lower part. Nearly at the top of a spur running east 



from the very southern end of Double Top. From a limestone at summit of grits and under 

 great red conglomerate with limestone and Archean pebbles. A small occurrence in an 

 Archean fold at its crest. 

 G. H. Eldridge, 1885. 



2318. Crested Butte district; Maroon formation, lower part. In forks of Cement Creek opposite Italian 



Peak, 400 feet up the gulch. From a limestone associated with carbonaceous, shaly layers 

 above some green beds of sandstone and conglomerate overlying the Red Beds. 

 G. H. Eldridge, 1885. 



2319. Crested Butte district; Maroon formation, lower part. Just below and east of the summit of 



Hunters Hill. From a limestone resembling that at 2318. 

 G. H. Eldridge, 1885. 



2320. Crested Butte district; Weber limestone. In a saddle of Cement Creek, west of Mount Tilton. 



From a limestone and black shales of the series immediately overlying the Eocarboniferous 

 limestone. 

 G. H. Eldridge, 1885. 



2321. Crested Butte district; Maroon formation, lower part. Dyke Creek, one-third to one-half mile 



above its mouth, just above first creek crossed by road, 1 mile beyond and just above heavy 

 limestone and Archean conglomerate. 

 G. H. Eldridge, 1885. 



2322. Rico quadrangle; Hermosa formation. Locality uncertain. 

 C. W. Purington, 1896. 



2323. Deadwood, Colo. 



2324. Ranch west of "camp 59," Colorado. 



A. R. Marvine, prior to November, 1880. 



2325. "Grand River, northwestern Colorado." 

 E. A. Barber, November 16, 1874. 



2326. Glenwood Springs, Colo. ; Weber formation. From 100 to 200 feet above the base of the Blue 



limestone. 

 T. W. Stanton, August, 1889. 



