496 H. E. Gregory — Reconnaissance of a Portion of the 



miles below the mouth of the Moencopie, in which the follow- 

 ing formations are represented : 



Shinarump formation 



Leroux member 600 feet 



^ Lithodendron member . . 500 



Moencopie formation 600 



Carboniferous limestone 100 



The Moencopie formation, consisting of shales and sand- 

 stone, was believed by Ward to pass by normal gradation into 



Fig. 3. 



3 



Kaibab Moencopie Formation Shinarump 



Limestone (Shales, Sandstones) Conglomerate 



Fig. 3. Diagrammatic section from Coconino Point to the Little Colorado 

 Eiver. 



the " Lithodendron member," consisting of conglomerate, 

 sandstone and marls ; and this member in turn was found not 

 to be sharply differentiated from the overlying marls, sand- 

 stones and limestones of the " Leroux member." u All these 

 beds really constitute one great series."* No detailed sections 

 were published by Ward, but the descriptions given indicate 

 that the Moencopie includes beds classed as Permian by Wal- 

 cott and the writer, that the " Lithodendron member " is in 

 part the Shinarump conglomerate of the .Navajo Reservation, 

 and that the shale members of the " Lithodendron " and all or 

 part of the "Leroux" are substantially the equivalent of the 

 Dolores formation of Cross. 



In other parts of the Colorado Plateau Province the Moen- 

 copie formation is separated from the Shinarump conglomerate 



*Idem, p. 22. 



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