GLACIATION OF THE UINTA MOUNTAINS 793 
On the flanks of the range the areas not covered by ice were 
between the great canyons. These areas became broader and 
broader to the north and south, beginning as narrow ridges near the 
_ crest-line (Fig. 3), and broadening to plateau-like areas near the 
foothills. The portion of the range that rose above the snow-fields 
associated with the glacier must have been much less than that which 
rose above the ice. ‘There is no way of determining how high the 
snow rested, but it is fair to assume that aside from a few lofty peaks 
Fic. 2.—A portion of the Provo Basin. The passes have been glaciated but the 
peaks rose above the ice. The lake in the foreground is in a rock basin that was 
gouged out by the ice. 
and narrow ridges the range appeared as a long white arch, rising 
about 7,000 feet above the country to the north and south, and 
suggestive, in form at least, of a partial reconstruction of the great 
Uinta anticline. 
Most of the catchment areas in which glaciers were formed are 
10,000 feet or more above the sea. A few favorably located basins 
between 9,000 and 10,000 feet furnished ice. The lower glacier 
basins are all near the western end of the range, where the snowfall 
was presumably greatest. Near the eastern margin of glaciation 
there are many basins above 9,000 feet in elevation that did not 
