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NEW YORK STATE MUSEUM 



As soon as the ice shrunk away from the eastern base of the 

 mountains at and south of Palmertown mountain, a lower course 

 was open to the river which now escaped along the eastern base 

 of Palmertown mountain and tlowed between the ice and the 

 mountain wall till the ice front was reached, there spreading out 

 (he broad ])lains of gravel and sand near Gansevoort on the margin 

 of the body of water in which the Albany clays were depositing. 

 At this time the ice evidently stretched eastward across the upper 

 Hudson valley at the southern margin of the Fort Edward district. 

 The Gansevoort delta at present largely modified by the drifting 



Fiff. 21 'Skotch map of the three deltas of the Adirondack-Hudson. C, the Corinth 

 delta; G, delta near Gansevoort; GF, the Glens Falls delta 



of its fine sands by the winds has its inner upper level at 325± 

 feet above sea level. It forms a broad gently inclined fan without 

 very definite outer margin, indicating that the water level of Lake 

 Albany was somewhere between the 300 foot and 325 foot lines 

 above the present sea level. 



Along ijs norihorn margin the delta is broken by large kettle 

 holes containing small lakelets showing the approximate position 



