PEALE.] 



GEOLOGY WIND RIVER AND BRIDGER GROUPS. 



Wind Eiver group — Continued. 



149 



Locality. 



Description of strata. 



• Age. 



Authority. 



Eeference. 



Sweet "Water Valley 



Brown indurated 



. (?) 



Hayden 



Eeport "U. S. Geol. 



and Wind Eiver 



sands, with seams 



(Wind Eiver 





Survey, 1870, p. 33. 



Mountains, 



of impure lignite or 

 carbonaceous clay, 

 with layers ot 

 coarse sandstones. 



group). 



- 





Between "Wind Eiver 



Marls are frequently 



Eesembles the 



Comstock 



Eeport of Geological 



and Owl Creek. 



variegated, i. e., 



Bridger rather 





Eeconnaissance o f 





bands of a bright 



than the Green 





Yellowstone Eiver 





red or pinkish color 



Eiver beds. 





and NorthwesterB 





are associated with 







"Wyoming, under 





the blue-greenish 







Captain Jones, 1675, 





and light-colored | 





pp. 1^8, 129. 





beds. 









Bridger group. 



Locality. 



Description of strata. 



Age. 



Authority. 



Eeference. 



West of Bryan and 



Fine sands and sand- 



Upper Tertiary . . . 



Hayden 



Eeport of U. S. Geol. 



at Church Buttes. 



stones, mostly in- 

 durated, sometimes 

 forming compact 

 beds, but usually 

 weathering into 

 castellated and 

 dome-like forms, 

 like the Bad Lands 

 of White Eiver. 







Survey,1867-'68'-69, 

 p. 191. 



Capping fie Green 



Leaden-gray i n d u - 



Above Green Eiver 



....do 



Eeport U. S. Geol. 



Eiver beds in places 



rated arenaceous 



group. 





Survey, 1870, p. 40. 



between Big Sandv 



clays. 









and Black's JFork of 











Green Eiver. 

















do 



Do., p. 42. 



er and the (Jintah 









Mountains. 











Bridger's Entte, near 



Somber-bro'svn indu- 



Bridger group 



....do 



Do., pp. 55, 56. 



Fort Bridger, and 



rated arenaceous 









divide between 



clavs, gray and 









Smith's Fork and 



rusty-brown sand- 









Henrv's Fork ol 



stones ; leaden- 









Green Eiver. 



bvown clays. 









Between Smith's and 



Indurated clays ; in- 



Above Lower Mio- 



....do 



Do., pp. 58, 59. 



Henrv's Forks of 



tercalated with 



cene beds. 







Green Eiver and in 



the clays are beds 









Green Eiver Valley. 



of rusty -brown and 

 gray sandstones, aU 

 tending to a con- 

 cretionary struc- 

 ture. 









Church Buttes 



Brown indurated 



Middle Tertiary, 



....do 



Do., pp. 144, 145. 





sands and clays. 



probably synchro- 

 nous with White 

 Eiver beds. 















Do., pp. 29g; 299. 

 Do., p. 168. 



Echo and Weber 



Conglomerates 



Probably parallel 



Hayden 



Valleys. 





with Bridger 

 group (Upper 

 Miocene). 







2Tear South Bitter 







....do 



Do., p. 75. 



Creek at La Ci6de. 



















Eeport U. S. Geol. 

 Survev, 1873, p. 437. 











Henry's Fork and 

 Muddy Creek. 





Upper Miocene . . . 



Lesquereux . . . 



Eeport U. S. Geol. 





Survey, 1871, p. 306. 





Dull-colored i n d n - 



Upper Eocene 



Comstock 



Eeport 6t Eeconnais- 





rated clays and 







sance of Tcllow- 





brownish, dull-yel- 







titone Eiver and 





low, or gray arena- 







No rthwesturn 





ceous layers, with 







VV yoming, under 





more or less concre- 







Captain Jones, 1875, 





tionary structure. 







p. 127. 



