Pleistocene Geology of Moravia Quadrangle 361 
delta several exposures of till which may correlate with this ridge; 
the location of the deposit of till now buried by the washed material 
of the delta conforms to the general trend of the ridge on the east 
side of the valley. 
North of Locke, about one-half mile, reaching out from 
the east side of the valley, is an accumulation of drift that sug- 
gests a halt in the ice. The analogous segment on the west wall 
is not well developed, if it ever existed, but there is noted along 
this west wall a large amount of till that probably represents the 
slow retreat of the ice, not a permanent halt. The suggestion of a 
loop on the east side may on the other hand represent a concen 
tration of drift, as the sections in it show an abundance of washed 
material from the region north and east, that is, the accumulations 
I of lateral-tongue drainage. This area of drift was originally 
irregular, and stream erosion has since greatly increased the 
irregularity. 
About one mile north of this last loop a more marked 
frontal lobe accumulation of drift crosses the valley. On either 
side this loop attains a fairly uniform development, and is espe- 
cially marked by the abundance of washed drift in the form of 
kames. This is particularly true on the western segment of the 
loop as appears in fig. Ii. The outwash in the valley southward 
to the loop discussed under is well developed. 
Fig. II. Looking southward on the west segment of loop “ 1.” 
