SECTIONS 477 



This bed, owing to the soft underlying shales, stands out as a prominent 

 brownish yellow cliff. Its upper portion is especially full of hard quartz 

 concretions, which, with their coating of desert varnish, stand out from 

 the yellowish limestone as conspicuous black nodules. The extreme upper 

 portion contains more or less limestone breccia. No fossils were found 

 here. 



Easting upon this limestone, Professor Johnson found, 5 to 8 miles 

 to the south, the red Moenkopi shales. We note in locality 2 an anticipa- 

 tion of the Moenkopi red mud conditions in Upper Kaibab times. 



Feet 



2. Red arenaceous shale with a calcareous cement alternating with yellow- 



ish limestone 12 



Both the red shale and the limestone are cross-bedded. The only fossil 

 found was a single imperfect specimen of Productus cf. ivesi Newberry. 



Feet 



3. Dense brownish gray limestone 7 



No fossils were noted. 

 •4. Originally a light gray limestone, now much of it silicified 23 



The entire thickness is conspicuous for its cross-bedding. Small 

 siliceous concretions are numerous. Some beds have a slightly green 

 color. No fossils were found. 



Feet 



5. Very light gray limestone 16 



Many concretions, large and small, present but apparently no fossils. 



Feet 



6. Alternating light gray and brownish gray limestone 13 



Concretions few. Fossils apparently confined to the numerous crinoid 

 joints. 



Feet 



7. Light gray limestone 8 



Concretions and fossils rather abundant. 



Crinoid joints c 



Cf. Septopora Mserialis (Swallow) c 



Productus ivesi Newberry r 



P. Occident alis Newberry c 



Composita suMilita (Hall) c 



Feet 



8. Brownish gray limestone 7 



Fossils and concretions rare. 



9. Brownish gray limestone 24 



