44 



MKSOZOIC FLORAS OF rMTKD STATKS. 



Ihscription o/ the sectkin shoini in fuj. S. 



1 . Arfrillaceous shale 



Feet. 

 100 



2. Calcan'ous shales IQQ 



3. Argillaceous shales. 



4. Sandstones 



5. -Argillaceous shales. 



200 

 100 

 200 



Total thickness of Moenco])ic fonnation 700 



6. Lithoileiulnin nienibei- 800 



7. Variegated mails 4(K) 



S. Sandstones 1()0 



9. Limestone ledge 20 



10. Mortar beds 80 



11. Calcareous marls 200 



Total thickness of the Shinarump formation 1, 600 



12. Orange-red sandstone 100 



13. Variegated .sandstones 8(X) 



14. Brown sandstones 200 



15. White sandstones 1(K) 



Total thickness of Painted Desert formation 1, 200 



Total thickness 3,500 



In order that the geographical relations of the area included in the 

 above discussion may be seen as clearly as possilole, I present a sketch 



ssw 



Fig. 7.— Section of Red Butte (seep. 43). 



map (PI. IV, in Part II) covering the territory in question and extending 

 a little beyond the extreme limits of all the sections. Although originally 

 formed by putting together the several sheets of the topographic 

 map used in the work, the topography does not appear in the map, but 



