GLACIAL GEOLOGY OF THE SCHENECTADY QUADRANGLE 1 3 



course, due to the filling up of its channel, beginning near Schenec- 

 tady, with deposits of Glacial age, it took possession of this portion 

 of the Ballston channel as far as Aqueduct and from there on cut a 

 new channel in the rocks. 



The location of the buried channel of the preglacial Mohawk 

 from near Schenectady eastward has not been determined. The 

 borings already referred to indicate that there is a depression in the 

 bedrock in the locality north of South Schenectady. Along a line 

 extending from the bank of the river, at a point about three-fifths 

 of a mile west of the Schenectady waterworks to a point near South 

 Schenectady no rock was struck. Unfortunately the borings were 

 made only to a depth of 195 feet above sea level, so that the vertical 

 extent of the depression was not determined. 



