194: 



K. Bryan — Rock Tanks and Char cos. 



diameter. The rock is banded and cross-bedded, and 

 contains many large bowlders, singly or in groups and 

 lenses. The bowlders are from 3 inches to 3 feet in 

 diameter, and are more or less ronnded joint fragments 

 of granite and gneiss. The bedding is massive, but there 

 are numerous joints, some of which are slickensided. 



Since deposition the conglomerate has been tilted and 

 eroded so that its cut edges now form part of the pedi- 

 ment of the adjacent Baker Peaks. As in other parts of 



#ik 



Ma 



M< 



flower Tails 



qoeh'c 

 >er Falls 





Abandoned^ 

 pump \ 



tn_ £-< Decree re noie 



i^Sr-V. 





^^ ^ i -^- / 1 



%T* oC ^^=2^? 







mill ands 

 tanK 



mm 



loo O IOO zoo soo Aoo feot" 



ELxplanahion 

 \i'$3 Coarse qranihc sand and Q i rQve\ 



I 1 Outcrops of sandstone and conglomerate 



, in bed of stream 



I 1 Banks oF srrearn : rock covered by 



rbin la\/er of alluvium 

 LiL ! V/arer a? surface 



Fig. 3. Sketch map of Baker Tanks, Pina County. 



southwestern Arizona, the pediment is dissected. Head- 

 water cutting of a new canyon by the stream is the cause 

 of the falls. As shown in fig. 3 there is a narrow gorge 

 in the conglomerate beginning 150 feet southeast of the 

 windmill. In this gorge are falls and rapids. From the 

 windmill west for 150 feet is a narrow gorge from 10 to 

 20 feet wide with walls 10 feet high, the bed of which is 

 a plunge pool. This is filled with coarse sand to a depth 

 said to be more than 20 feet. The windmill pumps water 

 from a pipe imbedded in the sand. At the lower end of 



