TRIASSIC PORTION OF SHINARUMP GROUP 105 



SECTION IN KANAB VALLEY, UTAH, MADE BY C. D. WAL- 

 COTT, 1879 



Jurassic 



FEET 



1. White Cliff sandstone, massive, cross -bedded, light gray, broken into 



five principal belts by horizontal lines of bedding . . . -585 



Triassic 



2. Vermilion sandstone; cross-bedded, friable, readily disintegrating, 

 forming the foothills and slope to the more compact sandstones at the 

 northern end of Vermilion Cliff Canyon ...... 650 



3. Gray and reddish-brown, cross-bedded sandstone. Horizontal beds of 

 varying thickness divide the mass into bands of from twenty -five to one 

 hundred feet in thickness ........ 300 



4. Evenly bedded red sandstones; upper portion an indurated, dark- 

 reddish-brown stratum; indurated layers alternate with more friable 

 layers and shales beneath . . . ■. . . . .120 



5. Massive gray sandstone, cross-bedded; upper portion is a light-gray 

 massive friable bed. The entire mass is subdivided into six principal 

 beds by subhorizontal lines of bedding of a dark, more indurated sand- 

 stone. The beds are from twenty to eighty feet in thickness, and may 



be seen on many steep escarpments along the canon . . . -310 



6. Sohd, partially cross-bedded sandstone, changing from gray to various 

 shades of red .......... 20 



7. Evenly bedded, light-red sandstone with a thin layer of intercalated 

 gray sandstone .......... 20 



8. Dark-red sandstone; massive layers alternating with shale, which dis- 

 integrates and forms a sloping talus to the gray sandstone beneath . 180 



9. Light-gray sandstone ......... 5 



10. Bedded sandstone of various shades of red and gray. The layers of 

 sandstone and their shaly partings are irregular in thickness. Scolithus 

 borings occur in great numbers in a friable yellow sandstone. Frag- 

 ments of vegetable matter and carbonized wood also were seen. . 230 



11. Thin layers of sandstone, alternating with bands of fine argillaceous 

 shale holding fish teeth and shells . . . . . . -25 



12. Massive light-brown sandstone, broken up into thick layers . . 50 



13. Alternating layers of sandstone and fine argillaceous shales with fish 

 teeth, etc. ........... 25 



A detailed section of 13 is as follows: 



a. Light sandy layers with shaly partings .... 7 



h. Fine, smooth, arenaceous and argillaceous shales, drab 



brown to red with fillets of green. A few fish scales were found 6 



c. Fine-grained, light-colored sandstone, 2 to 4 feet in thickness 4 



d. Same as (&), only more fossiliferous ..... 8 



