66 C. L. DAKE 



Beds." A rather detailed section was measured along this canyon, 

 and the section is given below. 



SECTION IN DIRTY DEVIL CANYON, NEAR FRUITA 



26 5oH-feet red shale, Moenkopi, slightly irregular contact, with a 



few pebbles 



limestone in massive ledge 

 red shale 

 covered slope 



limestone, chalky at base, sandy in middle, cherty at 

 top 



covered slope 



white chalky limestone, with chert concretions 

 covered 



gray limestone, weathers with a powdery surface 

 covered 

 chert 



non-bedded sandstone, very coarse at base, finer above 

 sandy limestone, with quartzite ledges 

 yellowish, very cross-bedded sandstone 

 sandy gray limestone 

 cross-bedded coarse white sandstone 

 sandy gray limestone 

 coarse gray sandstone 

 thin-bedded argillaceous limestone 

 cross-bedded coarse white sandstone 

 cross-bedded white sandstone with some thin shale 

 lenses 



thin-bedded shaly sandstone 

 cross-bedded white sandstone 

 2-6 inches greenish-gray shale 



massive cross-bedded coarse white sandstone 

 covered slope above river 



957 feet, all of which, except number 26, are Aubrey. 



There is nothing in the section above that can be correlated 

 with any great certainty with the individual beds in the vicinity 

 of Mule Twist Canyon. Member number 15 may possibly repre- 

 sent the sandstones of the Mule Twist region, though this is 

 uncertain. If it does, there are many more beds between it and 

 the Moenkopi here than in the former section. The unconformity 



