148 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Green River group — Continued. 



Locality. 



Lower part of Bridg- 

 er's Butte, and oth- 

 er localities near 

 Fort Bridger. 



Henry's Pork of 

 Green River. 



Green River, between 

 Henry's Fork and 

 Black's Fork. 



Green River beds 



Green River . 



East of Eock Spring. 



Grizzly Buttes, Hen- 

 ry's Fork. 



Green River Basin.., 

 Green River 



Description of strata. 



Limestones and 

 marls. 



Light, ash-colored 

 beds, succeeded by 

 brilliant colored 

 strata. 



Shales, marls, and 

 harder calcareous 

 strata. 



(Green River beds) 



Lower Miocene . . . 

 Middle Tertiary... 



(Older than Hay- 

 den made them"). 

 Eocene. 



TJpper Miocene . . . 



Probably equiva- 

 lent of the Eocene 

 Tertiary. 



Miocene '. 



Eocene. 



Lower Miocene or 

 Eocene. 



Eocene 



Upper Miocene. . . 



Upper Miocene. 



Lower Eocene . 



Authority. 



Hayden.. 



....do 



..-.do 



Newberry... 



Lesquereux . 



Leidy 



Lesquereux . 

 Cope 



Marsh 



....do 



Lesquereux . 



....do 



Comstock . . . 



Reference. 



Do., pp. 55, 56. 



Do., pp. 58, 59. 

 Do., pp. 69, 70. 



Do., p. 143. 



Supplement to 5th. 



Annual Report 



(1871). 

 Report U. S. Geol. 



Survey, 1871, p. 353. 



Report U. S. Geol. 



Survey, 1872, pp. 



410-417. 

 Report U. S. Geol. 



Survey, 1873, p. 436. 



American Journal 

 Science and Arts, 

 vol. iv, 1872, p. 256. 



Do., p. 299. 



Report U. 3. Geol. 

 Survey, 1873, p. 366. 



Amer. Jour. Science 

 and Arts, vol. iii, 

 June, 1874. 



Rept. of Reconnais- 

 sance of Yellow- 

 stone River and 

 N. W. Wyoming, 

 under Capt. Jones, 

 1875, p. 123. 



The Wahsatch group and the Green Eiver group occupy two distinct 

 basins, but are considered synchronous by Dr. Hayden and Prof. E. D. 

 Cope. (See tables of Green River and Wahsatch groups). I shall refer 

 to these groups in another portion of this chapter. 



The position of the Wind Eiver group, given in the next table, is by 

 no means certain. It may be equivalent to the Green River formation, 

 as it seems to be above the Lignitic group, or it may represent the 

 Bridger group. 



Wind Eiver group. 



Locality. 



Description of strata. 



Age. 



Authority. 



Reference. 



Wind River Valley 



Light gray and ash- 



(?) 



Hayden 



Exploration of Yel- 



and west of Wind 



colored sandstones. 



(Beneath White 





lowstone and Mis- 



River Mountains. 



with more or less 

 argillaceous layers. 



Riyer group). 





souri Rivers, under 

 Capt. W. F. Eay- 

 n 1 d s , 1859-'60. 

 Geol. Report F. V. 

 Hayden, p. 29. 





Yellowish and light, 



(?) 



....do 



Do., p. 79. 





more or less sandv 











marls, with pink 









1 



bands, alternations 











of sandstones and 

 clays. 









Between Wind River 



(?) 

 Above Lignitic 



...do 



Report U. S. Geol. 

 Survey,1867-'68-'69, 



and Big Horn 







Mountains. 





group and under 

 White River 

 group. 





p. 57. 



