GLACIATION IN THE TELLURIDE QUADRANGLE 625 
slightly rounded bowlders up to 15 or 18 feet in diameter. Below 
10,500 feet in elevation there are few large bowlders; but rounded 
bowlders in variety occur down to 10,350 feet. Below 10,500 feet 
the north bank of the stream is steep and shows no sign of morainic 
topography; south of the stream, however, the surface is less steep 
and somewhat irregular. Striated bowlders were found at an ele- 
vation of 11,200 feet along the trail east from Bald Mountain, at 
Fic. 9.—Turkey basin. Looking southeast from elevation 11,700 feet on Bald 
Mountain, about one mile distant. Note rock stream below patches of snow. 
10,900 feet along the trail on the left side of the stream, and at 
about 10,400 feet on the left side of the stream. 
VALLEY OF TURKEY CREEK 
Turkey Creek is formed by the junction of a north and a 
south fork which drain Turkey basin and Alta basin, respectively. 
Turkey basin is a broadly open cirque, in general flat bottomed, 
though containing many low ridges and other irregularities of sur- 
face (Fig. 9). It contains three lakes, the largest of which has been 
increased in size by the construction of dams until it has a diameter 
of nearly a fourth of a mile. In the southeast part a rock stream 
