624 GLACIAL EORMATIONS OF ERIE AND OHIO BASINS. 



plain leads past the southern end of Cassadaga Valley and connects with a 

 valley that leads down the Lake Chautauqua outlet from the moraine at 

 Jamestown. 



Concerning the position of the ice margin on the intervening uplands, 

 but little has been ascertained. On the divide between Lake Chautauqua 

 and Cassadaga Creek the drift surface is generally free from knolls. East 

 of Cassadaga Creek there are notable drift accumulations in Mill Creek 

 Valley, from its mouth near Sinclairville up nearly to its source, a distance 

 of 5 or 6 miles. This constitutes apparently a natural line of continuation 

 for the inner member, which was traced to the narrows of Lake Chautauqua. 

 There seems to be no moraine on the high divide to the east of Mill 

 Creek, but east of the divide along Farrington Hollow for about 3 miles 

 northwest from Cherry Creek village, there are conspicuous drift knolls. 

 The lower course of West Qonewango Creek, near Hamlet, is also choked 

 by drift knolls. Those in Farrington Hollow may constitute the line of 

 continuation of the inner member. On the east side of the main Cone- 

 wango Valley, drift knolls are conspicuous on the lower course of Dry 

 Brook, near Rutledge. They are also immerous north of Leon, where they 

 have filled an old valley which may have been the former line of discharge 

 for Mad Creek. But aside from these two places there are few knolls along 

 this side of the Conewango Valley. At the head of the Conewango Valley 

 there is a well-defined moraine, but it belongs to a later morainic system 

 than that under discussion. 



Between Conewango Creek and the South Fork of Cattaraugus Creek 

 there is a high upland, with an altitude 1,900 to 2,000 feet or more, and on 

 this upland drift knolls are comparatively rare. But a well-defined moraine 

 sets in near Maples post-oflice, about 6 miles east of Cattaraugus village, 

 which seems likely to be the continuation of the Cleveland morainic belt, 

 for it lies a short distance outside the morainic system which farther west 

 is known to be the next one younger than the Cleveland belt. Its general 

 course is indicated on the glacial map, PI. II, but a more definite outline 

 will be here presented. 



From Maples northeastward to the meridian of Machias, a distance of 

 nearly 20 miles, this moraine lies near to and in places constitutes the divide 

 between southern tributaries of Cattaraugus Creek and the headwaters of 

 Great Valley and Ischua creeks, which discharge to the Allegheny River. 



