GLACIAL WATERS IN CENTRAL NEW YORK $7 



east by southwest trend to the front, and thus allowed a sharp 

 fall from one valley to the next one on the east. 



The highest channel on the ground between the Butternut and 

 Limestone creeks mapped in the former writings was the " Green's " 

 channel, lying along the south side of the highway leading from 

 Jamesville to Manlius, with altitude of about 900 feet. The pres- 

 ent map, plate 4, represents slightly higher drainage. Much higher 

 on the slope are cuts and scourways apparently produced by west- 

 ward flow. These occur from 1 to 2 miles south of Green's chan- 

 nel, reaching about 1300 feet altitude. These features seem to 

 show that even the Limestone valley waters were once tributary to 

 Lake Newberry or Lake Hall. 



The delta fragments in the Limestone valley are quite as exten- 

 sive as those in the Butternut valley. They extend from Manlius 

 northwest to below Fayetteville, on both sides of the creek, and 

 are suggested on the map. A large remnant lies close west of 

 Manlius and east of the creek, consisting of very coarse material 

 and with altitude of 560 feet. A smaller fragment lies on the west 

 side of the valley with coarser material and higher elevation since 

 it represents the head of the original deposit. The largest frag- 

 ment is northwest of High Bridge, with summit altitude of 600 

 feet. Some sections of the Limestone valley must have been filled 

 clear across with the limestone rubbish, similar to the filling in the 

 Butternut valley, with subsequent excavation of the deposits and 

 the removal of the material northward into the low grounds. 



Limestone valley to Chittenango valley 



The map, plate 4, shows how completely the north -facing slope 

 between Fayetteville and Chittenango has been swept by stream 

 flow held betwixt the ice and the rock. On the meridian of Eagle 

 hill, the line separating the counties of Onondaga and Madison, 

 the whole slope is eroded, not less than 12 trenches or terraces in 

 limestone occurring within the space of 2 miles, ranging from 1100 

 feet down to 500 feet [see pi. 27]. On the lower ground lie four 

 more channels, in Salina shale, the lowest being a cut bank south of 

 the Erie canal and its wide water, at the altitude of about 440 feet. 



Theoretically there was some higher overflow, up to 1240 feet, 

 as this is the altitude of the lowest of two notches west of Caze- 

 novia lake which permitted the Limestone waters to pass eastward 

 over to the Cazenovia and Chittenango valleys, to find further 

 escape along the north side of Cranson hill as shown in plate 5. 



