KEEBLE S TINYGLA CIAL LAKE DELTAS SOI 
While not so extensive as some deposits of similar origin, 
this delta is a comparatively large one for the ephemeral glacial 
lakes of the region. By estimate it is about one-third of a mile 
across. 
The form and topography of the delta and the included 
basin are fairly shown in the accompanying sketch. The dis- 
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Approximate “Scale, y 
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er aa Oe a ae oats EDN 
| See 
Kettle in Delta at Potter, N. Y. 
tances are by eye-estimate and the elevations by aneroid. While 
the absolute elevations are not exact, the relative heights are 
approximately accurate. The sketch does not show the rock cut 
nor the continuation of the two terrace levels along the ravine 
upon the north side, these being perhaps one-eighth of a mile 
north of the area shown in the map. The higher level is there 
a filling of an angle or recess in the hills, about 4o rods wide 
and with a bar or ridge on the front. The lower level is repre- 
sented by a rock terrace about 10 rods wide. Behind the 
higher plateau, on both sides of the ravine, the ground is lower, 
with ridges and hollows transverse to the stream direction. 
