GLACIATION IN SANGRE DE CRISTO RANGE 19 
is a U-shaped valley with meadows and grassy patches, the lower 
slopes well rounded and glaciated. The lower limit of glaciation is 
beyond the region of the writer’s observations. 
On the north side of the valley, at the junction of the granite and 
the quartz conglomerate, a small valley has been cut out, and in this 
has formed the very pretty example of talus glacier shown (Fig. 3.). 
This mass of débris is about a third of a mile long and about 150 
Fic. 3.—Talus glacier in small valley entering Huerfano Valley from the north, 
three miles north of Blanca Peak. 
feet high at its lower termination. In the valley below several morainic 
trains may be seen emerging from beneath the talus glacier, showing 
that true glaciation preceded the formation of the talus glacier, which, 
from its bareness of vegetation and steep slopes, seems to be relatively 
recent in age. Streams of rocky material can be seen descending on 
to the débris, which has a remarkably smooth outline to have been 
formed through the agency of avalanches alone. Intermingled snow 
and ice must have played an important part in its formation. 
