680 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



Township, in a course south of west ak>ng the outer border of the Hamburg 

 moraine to Buffaki Creek, just below Wales Center. Its altitude is fully 

 100 feet above the present bed of Buffalo Creek at Wales Center, or not far 

 from 1,000 feet above tide. Upon reaching Buffalo Creek, tke stream seems 

 to kave passed down the valley about two miles, or nearly to Portersville, 

 and then turned westward along the face of the upland that separates 

 Buffalo Creek from the abandoned valley leading in from East Aurora. It 

 soon entered that abandoned valley and followed it in a course south of 

 west through East Aurora to Cazenovia Creek. Its altitude near the railway 

 station in East Aurora is about the same as the station — 925 feet. Its 

 precise course for 2 or 3 miles west from Cazenovia Creek has not been 

 determined, but it seems to have kept along the creek far enough to pass 

 the elevated upland west of East Aurora, and to have then taken a south- 

 westward course along the outer border of the moraine. Evidence that it 

 took this course is found in a channel, now abandoned, whose south bluff is 

 well defined, being cut into the face of the escarpment south of the moraine, 

 but whose north border is vague. The east-west road leading from East 

 Aurora to Deuels Corners descends into this channel about 2 miles east 

 of Deuels Corners and keeps in it for about a mile toward the corners, when 

 low shale hills set in. The channel passes between these hills and the 

 higher land to the south, and has for a short distance a well-defined bluff on 

 each side. West of the shale hills it enters the old lake at an altitude 

 about 875 feet above tide, thus making- a fall of 50 feet in the 6 or 7 miles 

 west from East Aurora. The actual fall of the stream was, however, some- 

 what less, for northeastward differential uplift, as shown in the neighboring 

 beaches, has materially affected that region. 



The channel just described is but one-fourth to one-half mile wide, and 

 its bluffs seldom exceed 30 feet in height. It seems rather small to have 

 carried the full drainage from the melting ice sheet, and suggests the inter- 

 pretation that part of the water may have worked westward into the lake 

 beneath the edge of the ice sheet. 



Between the two members of the moraine in eastern Marilla Township 

 there is a small channel which leads westward past Williston to the pitted 

 gravel plain south of Marilla. This was apparently formed by a glacial 

 stream, for it is out of harmony with the present drainage and is largely an 

 abandoned channel. 



