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NEW YORK STATE MUSEUM 



water deposition at levels 120 feet apart were presumably con- 

 temporaneous and made in the presence of ice-constrained 

 waters above the level of the sea. 



Kettle terraces of Bandlake and Poestcnkill. From 7 to 12 

 miles north and east of the Schodack deposits and at a much 

 higher elevation, the topographic map in the towns of Sutton 

 and Jennings shows contemporaneous glacial terraces developed 

 along the course of the Wynant kill and Newfoundland creek. 

 The surfaces of these deposits are at various levels from 520 to 

 720 feet. They clearly pertain to an earlier ice margin than 

 that nearer the river at Schodack and are far above the water 

 planes of the valley subsequent to the disappearance of the ice 

 sheet over the region south of Albany; but no examination of 

 them has been made in the survey on which this report is based. 



Having followed now from Newburg to the vicinity of Albany 

 a series of deposits contemporaneous with the retreating ice 

 sheet or tongue in the Hudson valley it is necessary to note 

 other deposits in the same portion of the valley but nearer the 

 river or in a doubtful relation to the ice sheet. These notes are 

 concerned with a few typical cases only. 



Arlington clay deposit near Poughkeepsie. South and east of 

 Poughkeepsie as noted by Kies there are clays which are worked 

 at Arlington with their surface at or about the 180-foot con- 

 tour line. The precise stage to which this deposit belongs has 

 not been definitely determined, but its position and association 

 with the intraglacial debris which covers the terrace of the 

 Hudson from the lateral terrace delta at New Hamburg north- 

 ward shows that it is at least as old as the occupation of the 

 valley by the Newburg ice remnant, but it may be an earlier body 

 of clays. That the clays do not belong to the Albany stage is 

 quite evident from the general distribution of glacial deposits 

 in the vicinity. 



Port Ewen deposits. Port Ewen lies on the south side of the 

 mouth of Kondout creek. The terrace deposits here have an ele- 

 vation of 150 feet, consisting of boulder clay below with striated 

 stones, the blue clays and sand at top. The underlying till is very 

 stony and gravelly, and may be seen in the bank as high as 30 feet 



