THE OLDER MESOZOIC OF ARIZONA. 



45 



White sandstones. 



Brown sandstones. 



Variegated sandstones, regularly stratified 

 and brilliantly colored, with numerous 

 lines, presenting a striking and beautifvil 

 banded appearance, and forming the well- 



i Painted Cliffs. 



Red-orange sandston 



Mortar beds with impure flintstones. 



Limestone ledge, definitely stratified. 



— ; I'ainted Desert 



Sandstone ledge with black logs; local. 



Variegated marls, chiefly argillaceous but 

 somewhat calcareous, often worn into 

 small buttes studding the plains; white, 



Conglomerates and cross-bedded coarse 

 sandstones, often with pink and white 

 striped clay lenses, interstratified with 

 gray argillaceous shales and variegated 

 marls, the latter locally much thickened, 

 forming brilliantly colored banded cliffs. 



Dark chocolate-brown argillaceous shales, 

 devoid of grit and highly charged with b 

 salt and gypsum. Saliferous beds. 



Dark-brown, soft, argillaceous sandstones. 



.rgillaceous, dark-brown shales, highly : 



3 shales, mostly white. 



Saliferous shales £ 



andstones. Un- 



Leroux member. 



Moeneopie formation. 



Fig. 8.— Geological column of the Older Mesozoic of Arizona. 



