712 ALLEN DAVID HOLE 
valley, together with the generally mature stage of erosion of the 
whole basin. 
ALONG DEEP CREEK 
A little more than half a mile below the junction of the east and 
the west forks of Deep Creek, deposits occur estimated at not less 
than 30 to 4o feet in thickness at a maximum. As shown on the 
accompanying map, they lie chiefly on the east side of Deep Creek. 
In topography, the surface is in part irregular, but part shows some 
ridges approximately parallel to the tributaries of Deep Creek from 
the east. In composition, the deposit contains bowlders in variety 
up to 3 or 4 feet in diameter, many of them rounded; none with 
distinct glacial striations were found. 
The deposits are classed as glacial on the evidence of the 
topography, the heterogeneous composition, the unstratified 
arrangement, and the rounded, subangular forms of the included 
bowlders. It is classed as older drift because of its disposition, 
discordant with the clearly marked deposits of the recent epoch 
farther up the stream, and because of the absence of evidence of 
recent glacial action in the upper part of the valleys of the tribu- 
taries next south of the east fork of Deep Creek. 
ON THE WEST SIDE OF PROSPECT CREEK 
At elevation 9,900 to 10,000 feet along the road parallel to 
Prospect Creek, glacial drift containing striated bowlders occurs at 
intervals for nearly a quarter of a mile. These exposures are on 
the southwest-facing slope of a round-topped ridge which separates 
the valley of Prospect Creek from that of one of its tributaries. 
The slope is here wooded, and the composition of the surface 
deposits is largely obscured. 
NEAR THE JUNCTION OF THE TWO BRANCHES OF TURKEY CREEK 
Deposits near the junction of the two branches of Turkey Creek 
occur as follows: 
1. At a point about one-fourth of a mile above the junction 
of the two branches, glacial débris extends 20 to 30 feet up from the 
stream on the north side. 
2. Just above the junction of the two branches a small accumu- 
lation of glacial débris lies between the two streams, joining the 
