GLACIATION OF SAN FRANCISCO MOUNTAIN 



277 



snow accumulation was about one and a half square miles, and the 

 possible depth of snow and ice was somewhere near 2,000 feet. 



Ascending the mountain from the east, the first morainic deposits 

 appear at an elevation of about 9,250 feet and at a distance of about 

 two miles from the head of the basin. At this point morainic ridges 



Contour Interval syorecr 



Fig. 1. — Topographic sketch of top of San Francisco Mountain, Arizona. 



jut out into the valley from either side, but fail to cross the stream 

 course and unite. This connection was probably complete at one 

 time, but the material of the terminal moraine has been largely 

 washed away. 



Down-stream from the position of the terminal moraine there is a 

 heavy alluvial deposit, made by torrential waters issuing from the 

 end of the glacier. This outwash or valley train extends at least one 



