PEALB. ] 



GEOLOGY WIND EIVER AND BRIDGER GROUPS. 



Wind River group — Continued. 



149 



Locality. 



Description of strata. 



Age. 



Authority. 



Reference. 



Sweet "Water Valley 



Brown indurated 



(?) 



Hayden 



Report U. S. Geol. 



and W ind Kiver 



sands, with seams 



("Wind River 





Survey, 1870, p. 33. 



Mountains. 



of impure lignite or 

 carbonaceous clay, 

 with layers oi 

 coarse sandstones. 



group). 







Between Wind Kiver 



Marls are frequently 



Resembles the 



Comstock 



Report of Geological 



and Owl Creek. 



variegated, i. e., 



Bridger rather 





Reconnaissance o f 





bands of a bright 



than the Green 





Yellowstone River 





red or pinkish color 



River beds. 





and Northwestern 





are associated with 







Wyoming, under 





the blue-greenish 







Captain Jones,1875, 





and light-colored 







pp. 128, 129. 





beds. 









Bridger group. 



Locality. 



Description of strata. 



Age. 



Authority. 



Reference. 



West of Bryan and 



Fine sands and sand- 



Upper Tertiary . . . 



Hayden 



Report of U. S. Geol. 



at Church Buttes. 



stones, mostly in- 

 durated, sometimes 

 forming compact 

 beds, but usually 

 weathering into 

 castellatecf and 







Survey, 1867-'68'-69, 

 p. 191. 













dome-like forms, 











like the Bad Lands 











of White River. 









Capping the Green 



Leaden-gray indu- 



Above Green River 



....do 



Report U. S. Geol. 



River beds in places 



rated arenaceous 



group. 





Survey, 1870, p. 40. 



between Big Sandy 



clays. 









and Black's Fork of 











Green River. 











Between Fort Bridg- 





Miocene 



do 



Do., p. 42. 



er and the Uintah 









Mountains. 











Bridger' s Butte, near 



Somber-brown iudu- 



Bridger group 



....do 



Do., pp. 55, 56. 



Fort Bridger, and 



rated arenaceous 









divide between 



clays, gray and 









Smith's Fork and 



rusty-brown sand- 









Henry's Fork' ol 



stones ; leaden- 









Green River. 



brown clays. 









Between Smith's and 



Indurated clays ; in- 



Above Lower Mio- 



....do 



Do., pp. 58, 59. 



Henry's Forks of 



tercalated with 



cene beds. 







Green River and in 



the clays are beds 









Green River Valley. 



of rusty-brown and 

 gray sandstones, all 

 tending to a con- 

 cretionary s t r u c- 

 ture. 









Church Buttes 



Brown indurated 

 sands and clays. 



Middle Tertiary, 

 probablysynchro- 



....do 



Do., pp. 144, 145. 











nous with White 











River beds. 











Fossils, Miocene . . 



Meek 



Do., pp. 298, 299. 



Echo and Weber 





Probably parallel 



Hayden 



Do., p. 168. 



Valleys. 





with Bridger 

 group (Upper 

 Miocene). 







Near South Bitter 





Upper Miocene 



...do '. 



Do., p. 75. 



Creek at La Clede. 













Eocene 



Cope . 



Report U. S. Geol. 

 Survey, 1873, p. 437. 











Henry's Fork and 





"Upper Miocene . . . 



Lesquereux . . . 



Report U. S. Geol. 

 Survey, 1871, p. 306. 



Muddy Creek. 







Dull-colored indu- 



"Upper Eocene 



Comstock 



Report of Reconnais- 





rated clays and 







sance of Yellow- 





brownish, dull-yel- 







stone River and 





low, or gray arena- 







No rthwestorn 





ceous layers, with 







"Wyoming, under 





more or less concre- 







Captain Jones,1875, 





tionary structure. 







p. 127. 



