BAERE MORAINE. 695 



Excavations in the pitted plain southwest of Oakfield, near the FertiHzer 

 Works, show till iuterbedded with gravel and sand in such manner as to 

 suggest either a readvance of the ice to form the till, or the deposition of 

 the gravel beneath the ice margin. The form of the pits or basins seems to 

 favor the view that the ice was present and prevented their being filled with 

 gravel. The gravel deposits of this region, while presenting considerable 

 similarity to the outwash found in localities where there was free discharge 

 for the glacial waters will probably, upon close inspection, reveal through- 

 out their extent features which are compatible with the obstructed drainage 

 due to the presence of the waters of Lake Warren. 



BARRE MORAINE AND ASSOCIATED ESKERS. 

 DISTRIBUTION. 



The Barre moraine presents a nearly continuous chain of ridges from 

 the head of Oak Orchard Swamp, near South Barre, in southern Orleans 

 County, westward to Lockport. Its crest passes through the , villages of 

 West Barre, East Shelb}^, Royalton, and McNalls, in a slightly winding 

 course, as shown on PI. III. From its crest eskers and morainic spurs 

 extend north a mile or two, but the main ridge is only about one-fourth of 

 a mile in width. South from the main ridge in western Orleans County 

 small ridges and knolls are scattered over the interval between the ridge 

 and Oak Orchard Swamp. Knolls and ridges also lie south of the main 

 ridge in Niagara County out to a distance of about 2 miles. Those in 

 Niagara County, as above indicated, may belong to the Batavia moraine. 

 The continuation from Lockport seems to be in a northward course toward 

 Wilson, on the shore of Lake Ontario, there being an exceptionalh- large 

 number of bowlders in that direction. No sharply outlined ridges or other 

 morainic features were noted, but as the drift here was laid down in a great 

 depth of lake water such ridges could hardly be expected. 



From South Barre eastward the coiu-se of the Barre moraine is rather 

 indefinite. There is, however, a prominent group of knolls in the "New 

 Gruinea Settlement" at the head of Oak Orchard Swamp, in southwestern 

 Clarendon Township, which constitutes a natural line of continuation. From 

 this group the course seems to be south of east into northeastern Genesee 

 County, there being more drift knolls in that direction than to the east or 

 northeast. Its continuation in Monroe County seems to be in knolls near 

 the line of Ogden and Riga townships and in the north part of Chili 



