KANAB VALLEY SECTION 485 



Section of Jurassic and Triassic formations in the Kanab valley, Utah — Continued 

 Top Feet 



16. Evenly bedded red sandstones. Upper portion an indurated, dark red- 



dish brown stratum. Indurated layers alternate with more friable 

 layers and shales beneath 120 



17. 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 linesof beddingofa dark, more indurated sand- 

 stone. The beds are from 20 to 80 feet in thickness, and may be seen 

 on many steep escarpments along the canyon 310 



18. Solid, partially cross-bedded sandstone, changing from gray to various 



shades of red 20 



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



gray sandstone 20 



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



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



21. Light-gray sandstone 5 



22. Bedded sandstone of various shades of red and gray. The layers of sand- 



stone 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 



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



shale holding fish teeth and shells 25 



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



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



teeth, etc 25 



A detailed section of 25 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 grained, light-colored sandstone, 2 to 4 feet in thick- 



ness 4 



d. Same as (6), only more fossil iferous. The entire band varies 



from 20 to 25 feet in thickness. Great interest is attached 

 to this bed, as up to the present time it has afforded more 

 fossils than have been obtained from the rocks between the 

 Shinarump conglomerate and the Jurassic limestone. They 

 include ichthyic remains, Entromostracans and Conchifers . 8 



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



with shaly partings 120 



27. Alternating bands of marls and shales, with layers of friable light and 



reddish-brown sandstone 70 



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



with a stratum of gray sandstone at the base 20 



29. Arenaceous and earthy gypsiferous shales; marlites, purple, brown, 



bluish-green, and green, forming low, rounded foothills and slopes from 



the Vermilion cliffs to the Shinarump conglomerate 650 



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



tized pebbles and holding silicified wood 50 



Total 3,430 



