412 
Frank Carney 
feet, and because of post-glacial erosion, it has been so dissected 
by a meandering stream and altered by resulting aggradation as : 
to suggest two deltas rather than one. Nevertheless the genesis 
of these sediments scarcely allows a compound result. | 
The portion of this delta lying nearer Moravia presents a beauti- ! 
fully serrated front and very typical top. This part has suffered | 
but slightly from post-glacial stream work. The eastern seg- j 
ment, which is just northeast of Montville, presents a very even || 
surface, but a verj. abnormal front, if one is inclined to consider I; 
it a distinct delta. This front, however, is more likely the product |! 
of stream erosion. It still bears a suggestion of meander curves ij 
and sloping floodplain reaching away from them (fig. 24). |l 
Southeast of Wilson’s Corners is a slight but sharply 
developed delta. In texture its sediments are very fine. Its 
altitude, 1160 to 1175 feet, indicates a very localized water body, | 
while its slight area suggests a brief period of formation. 
‘N.” Immediately east of Morse Mill is a small but nicely | 
outlined delta ranging from 1880 to 1900 feet in altitude. This I 
delta also shows genetic association with a local body of water. 
aj „ This sheet includes in the Skaneateles inlet valley a small 
portion of a delta, the remainder of which is on the Cortland | 
sheet. As this delta is associated with a stream that lies entirely |i 
off the Moravia quadrangle, no study was given it. 1 
WATER BODIES WITH WHICH THESE DELTAS ARE ASSOCIATED. j| 
The general history of the ice-front lakes connected with the 1 
retreat of the Wisconsin glacier has been worked out with con- | 
siderable detail in the St. Lawrence basin area. The minor lakes ' 
formed in the Finger lake valleys, as soon as the ice had with- 
drawn northward from the divides at the southern ends, coalesced j 
ultimately into two more extensive levels, one Lake Newberry | 
with its overflow channel at Horseheads, N. Y., into the Susque- |! 
hanna drainage basin; the other and later. Lake Warren, with 
an outlet across the '‘Thumb” of Michigan into Lake Chicago. 
(i) Lake Newbury, according to the geologists who have given 
it special attention, represents the coalescence of glacial lake 
Seneca and high-level water bodies to the east, principally of the 
Cayuga and Owasco valleys. (2) The expansion of Lake New- 
berry, as the Ontario lobe withdrew northward, resulted in a 
