148 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Green River group — Continued. 



Locality. 



Lower part of Bridg- 

 ets Butte, and oth- 

 er localities near 

 Fort Bridger. 



Henry's Fork of 

 Green Biver. 



Green Bi ver , between 

 Henry's Fork and 

 Black's Fork. 



Green Biver beds 



Green Biver . 



East of Eock Spring. . 



Grizzly Buttes, Hen- 

 ry's Fork. 



Green Biver Basin.. 

 Green Biver 



Description of strata. 



Limestones and 

 marls. 



Light, ash-colored 

 beds, succeeded by 

 brilliant colored 

 strata. 



Shales, marls, and 

 harder calcareous 

 strata. 



Age. 



(Green Biver beds) 



Lower Miocene.. 

 Middle Tertiary. 



(Older than Hay- 

 den made them). 

 Eocene. 



Upper Miocene 



Probably equiva- 

 lent of'tho 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 



Beference. 



Do., pp. 55, 56. 



Do., pp. 58, 59. 

 Do., pp. 69, 70. 



Do., p. 143. 



Supplement to 5th 

 Annual Beport 

 (1871). 



Beport U. S. Geol. 

 Survey, 1871, p. 353. 



Beport U. S. Geol. 



Survey, 1872, pp. 



410-417. 

 Beport U. S. Geol. 



Survey, 1873, p. 436. 



American Journal 

 Science and Arts, 

 vol. iv, 1872, p. 256. 



Do., p. 299. 



Beport U. 3. Geol. 

 Survey, 1873, p. 366. 



Amer. Jour. Science 

 and Arts, vol. iii, 

 June, 1874. 



Bept. of Beconnais- 

 sance of Yellow- 

 stone Biver and 

 N. W. "Wyoming, 

 under Capt. Jones, 

 1875, p. 123. 



The Wahsatch group and the Green River group occupy two distinct 

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

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

 to these groups in auother 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 Eiver formation, 

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

 Bridger group. 



Wind River group. 



Locality. 



Description of strata. 



Authority. 



Beference. 



"Wind Biver Valley 

 and west of Wind 

 Biver Mountains. 



Between "Wind Biver 

 and Big Horn 

 Mountains. 



Light gray and ash- 

 colored sandstones, 

 with more or less 

 argillaceous layers. 



Yellowish and light, 

 more or less sandy 

 marls, with pink 

 bands, alternations 

 of sandstones and 

 clays. 



(?) 

 (Beneath White 

 Biver group). 



(?) 



(?) 



Above Lignitic 



group and under 



White Biver 



group. 



Hayden . 



....do.... 



...do 



Exploration of Yel- 

 lowstone and Mis- 

 souri Bivers, under 

 Capt. W. F. Bay- 

 n o 1 d s , 1859-60. 

 Geol. Beport F. V. 

 Hayden, p. 29. 



Do., p. 79. 



Beport U. S. Geol. 

 Survey,1867-'68-'69, 

 p. 57. ' 



