284 PROCEEDINGS OF THE NATIONAL MV8EVM. vol.52. 



SECTION IN KANAB VALLEY, UTAH, MADE BY C. D. WALCOTT, 1879 — Continued. 



Triassic. 



Feet. 



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



ing the foothills and slope to the more compact sandstones at the northern 



end of Vermilion Cliff Canyon G50 



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



varying thickness divide the mass into bands of from 25 to 100 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 sandstone. The 

 beds are from 20 to 80 feet in thickness, and may be seen on many steep 

 escarpments along the canon 810 



6. Solid, 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 disinte- 



grates 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 sand- 



stone and their shaly partings are irregular in thickness. Scolithus bor- 

 ings occur in great numbers in a friable yellow sandstone. Fragments 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 



b. Fine, smooth, arenaceous and argillaceous shales, drab brown to 



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



c. Fine-gi'ained, light-colored sandstone, 2 to 4 feet in thickness 4 



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



14. Reddish-brown friable sandstone, broken into layers 1 to 6 feet thick, with 



shaly partings 120 



15. Altcrnal:ing bands of marls and shales, with layers of friable light and red- 



dish-brown sandstone 70 



IG. Reddish-brown sandstone broken up into layers 2 to 7 feet in thickness with 



a stratum of gray sandstone at the base 20 



17. Arenaceous and earthy gypsiferous shales; marlites, purple, brown, bluish- 



green, and green, forming low, rounded foothills and slopes from the Ver- 

 milion cliffs to the Shinarump conglomerate 650 



18. Gray conglomerate and sandstone. Conglomerate formed of small, aga- 



tized pebbles and holding silicified wood 50 



Total of Triassic 2,845 



