284 H. L. FAIRCHILD — LAKE WARREN SHORELINES: GENEVA BEACH. 



bar, of fine gravel, crossing a north-and-south road one-fourth of a mile 

 south of the junction with the east-and-west town-line road. The phe- 

 nomena are fragmenta^ for nearly a mile, owing to the irregular surface 

 and stream erosion, but are as good as might be expected under the con- 

 ditions. West of a small stream a good ridge is found, which swings 

 around to the southward and is terminated by stream-cutting at an east- 

 and-west road. The beach then follows a low slope westward, lying along 

 the south side of the east-and-west road, crossing the north and south 

 road, and is a good bar at one point. The phenomena terminate in an 

 area of sharp, kame knolls at a road crossing about two miles southeast 

 of Shortsville. The kame knolls were mostly submerged, but the high 

 points were 40 to 50 feet exposed. 



North and northeast of the district last mentioned the ground is thrown 

 into drumlin ridges higher than the water plane, and the waters were not 

 able to produce heavy beach phenomena. 



West and southwest of the kame area the ground is too low for beaches , 

 being a plain of till and clay with an average altitude of -about 675 feet, but 

 falling toward the valley of Canandaigua Lake outlet. The lake waters 

 here formed an embay ment, which included the valley of the present 

 Canandaigua lake. The shoreline phenomena are to be looked for above 

 Chapinville and about Canandaigua. 



The total length of the beach as traced is from 16 to 20 miles. 



The waters which produced this shoreline were not limited to the 

 Seneca embayment, as the western end of the beach line faces lower 

 ground toward the west, which reaches beyond the Genesee river. More- 

 over, there are evidences of the same water body in the Irondequoit and 

 Genesee valleys. At Fishers and Victor are fine terraces and plateaus of 

 undoubted static water origin, with an altitude of about 700 feet. 



Near Victor one short bar or spit has been seen at about the proper 

 altitude, but it has not been accurately measured. In Rush township, 

 along the Genesee river, the north end of the drumlins are clearly notched 

 by wave action at a corresponding height. Beach phenomena have not 

 been seen in the Genesee valley, but will probably be found when care- 

 fully looked for. 



