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NEW YORK STATE MUSEUM 



sweeping away the sands from its path. At the same time strong 

 currents moving northward through the Ballston channel, diverted 

 from the flooded Mohawk, further removed the sands from the 

 depressed area eastward from Ballston Spa. In this way was 

 formed, as a residual part of the lower sand plain in this quarter, 

 the conspicuous islandlike area of sand at the 320-340 foot level. 



At a later time Kayaderosseras creek, in its course across the 

 depressed area to its mouth in Saratoga lake, aggraded its channel, 

 forming the flat lands bordering the present stream. The surface 

 of these late glacial deposits has been overspread, to some extent, 

 in the recent epoch, with alluvium. 



The sediments laid down by streams at times of overflow of their 

 banks ; the occasional low hills of blown sands on the Saratoga 

 plain ; and the accumulations of sediments and vegetable debris 

 in lakes and ponds, often converting the latter into swamps, are 

 deposits representing the work of geological agencies during the 

 recent epoch. 



