MARILLA MORAINE. 681 



There is still another channel which seems to have been formed jnst 

 before the ice sheet withdrew from this moraine. It lies on the north slope 

 of the inner member, but is limited on the north by a chain of drift knolls 

 that separates it from a lower channel. Each of the channels passes across 

 from Cayuga Creek to Little Buifalo Creek. The one under discussion 

 seems to be in harmony with the Belmore beach and apparently connected 

 with Lake Whittlesey at Marilla. The lower channel to the north seems 

 to be connected with the upper beach of the Lake Warren series and is 

 therefore of later date than this moraine. 



MARILLA MORAINE. 

 DISTRIBUTION. ■ 



The Marilla moraine appears to set in on tlie east side of Little Buffalo 

 Creek immediately north of the village of Marilla in eastern Erie Countv, 

 N. Y. If it continues farther west, it is either too faint to be easily recog- 

 nized or is combined with the Hamburg moraine. From Marilla eastward 

 into Genesee County it is a well-defined ridge separated by only a nan-ow, 

 valley-like lowland from the Hamburg moraine. Its outer border passes 

 just north of the corners of Wyoming, Grenesee, and Erie counties, while its 

 inner border passes from Erie into Genesee County immediately east of the 

 village of Alden. 



The Marilla moraine does not, like the Haii^burg, connect with the 

 iuterlobate moraine of the Lake Escarpment system, but passes the north 

 end of the iuterlobate spur and continues eastward to Tonawanda Creek 

 Valley south of Batavia, near which it passes beneath or becomes combined 

 with the Batavia moraine. For several miles before reaching Tonawanda 

 Creek it is combined with the Alden moraine, which farther west lies 1 to 3 

 miles north of it. 



The moraine is generally between 1 and 2 miles wide. Its course 

 throughout is from south of west to north of east and is remarkably direct. 



RANGE IN ALTITUDE. 



This moraine shows remarkably little range in altitude compared with 

 moraines to the south. Its altitude near Marilla is about 900 feet on the 

 crest and 875 feet on the inner border; at the line of Erie and Genesee 

 counties the crest is about 1,000 feet; from this county line eastward to 



