166 
IOWA ACADEMY OF SCIENCES. 
spicuous ridge in which the beds stand on end. A geo- 
logical section along the line of the canyon is represented 
below (figure 5): 
In the Sierra de los Caballos range, 100 miles to the 
southward, the two parts of the mountain block are 
divided by the Palomas canyon — a narrow, deep cleft, the 
bottom of which is over two thousand feet below the crest 
of the ridge. The side of the canyon, where the latter 
makes a sharp bend, is represented as in figure 6. 
Fig. 6, Palomas Canyon Fault. Displacement 000 feet. 
