LOCALITIES WHERE THE GROUPS CAN BE STUDIED. 53 



FIG. 9. SECTION OF WHITE CLIFF, VERMILION CLIFF, 

 AND SHINARUMP GROUPS. 



1,000 



2,000 



3,000 



4,000 



WHITE CLIFF GROUP. 



No. 1, 600 feet. Light gray or white sandstone ; massive ; cross-bedded. 



No. 2, 300 feet. Bright pink and vermilion sandstone ; cross-bedded. 



No. 3, 200 feet. Gray, red, and brown sandstone ; cross-bedded ; of many cojors ; tl 



colors appearing in bands with oblique lamination, giving the rocks a beautifully v 



riegated appearance. 



the 

 a- 



VERMILION CLIFF GROUP. 



No. 4, 50 foot. Red friable sandstone. 



No. 5, 180 foot. Massive sandstone ; cross-bedded ; with a few irregular beds of lime- 



stoiie not persistent horizontally; stained rod on exposed surfaces. 

 No. C, 320 feet. Red sandstone ; thickly bedded. 

 No. 7, 2 feet. Calciferous sandstone. 

 No. 8, 100 feet. Orange or /vermilion sandstone. 

 No. 9, 5 feet. Light gray sandstones. 

 No. 10, 400 feet. Orange sandstones ; rather massively bedded. 



SHINARUMP GROUP. 



No. 11, 800 feet. Bad-land sandstones, rapidly disintegrating ; argillaceous ; weather 



ing in variegated hills. 

 No. 12, 80 feet. Conglomerate. 



No. 13, 193 feet. Red, bail-land sandstone ; very friable, with much gypsum. 

 No. 14, 100 feet. Greenish gray bad-land sandstone, with much- gypsum, and rapidly 



disintegrating. 



No. 15, 8 feet. Compact gray sandstone. 



No. 16, 3! foot. lied sandstones and arenaceous shales ; gypsum in seams and joints. 

 No. 17, 250 feet. Red and brown sandstone ; rather thinly bedded, with many ripple 



marks. 

 No. 18, 50 foot. Conglomerate with angular and rounded fragments of limestone in a 



matrix of calciferous sand. 



The sandstones of this group are well seen in the vicinity of Flaming 

 Gorge on the south side of the Green River; again between Dry Lake and 

 Vermilion Creek north of Po Canon, and in a narrow zone on the south side 

 of the Uinta Mountains, and in many other places on the tributaries of the 

 Green and Colorado Rivers; and everywhere the lithologic characteristics 

 are more or less persistent. The cross-bedded sandstones usually form a 

 conspicuous landmark. 



