RESUME OE LITERATURE. 61 



In the same volume is published another series of sections made on Eagle River 

 at a point considerably below the foregoing, which represents the higher beds of tlie 

 series, as that does the lower ones. 



Section of Jurassic, head of second canyon, Eagle Eicer, ~ouih side. [After Peale.)" 



Thickness 

 in I'eet. 



1. Space probably filled with sandstones and marls, about 500 



190 



2. Laminated sandstones and blue limestones i 



3. Light-yellowish brown sandstone 



4. Blue limestone 50 



5. Gray shaly sandstones with interlaminated marls and thin bands of blue limestone 200 



Total about ■ 940 



Section of Triasdc on Eagle liiver at second canyon. [After Peale.) * 



Feet. 

 8. Massive light-colored quartzitic sandstone 10-20 



7. Red sandstones somewhat laminated i 



\ 300 



6. Pink quartzitic sandstone J 



5. Red sandstones, more massive than the lower layers, although there is some lamination 375 



4. Coarse white sandstone _ 5 



8. Red and brown laminated sandstones, some o£ the layers being seemingly calcareous 193 



2. Purplish sandstones 15 



1. Red sandstones, somewhat laminated 70 



Total thickness 978 



Section of I'erino-Carboniferous. (After Peale. ) <• 



Feet. 



1. Gypsiferous shales and sandstones. The gypsum occurs in great quantity and is rather 



iiiipure. The sandstones are laminated and generally of a i^ink or red color. I was 

 unable to get the exact thickness, but the outcrop was from 500-800 



2. Shales, sandstones, and limestones, alternating colors, pink, brown, gray, yellow, white, 



cream color, and blackish. These beds are best shown on the north side of the river. 

 They incline generally about 60°. In some places they are inclined past the vertical, 

 especially in the upper portion. The thickness in about : 500 



3. Pink, brown, and gray shaly sandstones with interlaminated thin beds of blue limestone. 



These beds resemble those I noticed in 1873 in South Park, which are given in the report 



of 1873, in sections 9, 10, and 11. The thickness on Eagle River is about 200 



Total thickness 1, 500 



The tirst .section contains beds referred to the Silui'ian, Carboniferous, and 

 Permian; the other to the Permian, Triassic, Jurassic, etc. It is not clear from the 

 context that the Permian portion of the latter is continuous with the Triassic and 

 the Jurassic series, but this appears to be the case. The following is the summarized 



aU. S. Geol. Geog. Surv. Terr., [Eighth] Ann. Kept., for 1874, 1876, p. 119. 6Ibid., p. 122. ilbid., p. 125. 



