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NEW YORK STATE MUSEUM 



proximately at the 200 foot contour line. The Roeliff Jansen kill 

 appears to have discharged against the ice edge and contributed 

 to the building of this remarkable deposit. The terrace is high- 

 est where the river now intersects it and declines in level north- 

 ward. At Ookerville 2 miles south of the kill there is a fragment 

 of the terrace which lies still higher. The question of the atti- 

 tude of the surface of these deposits in relation to contempo- 

 raneous water levels and the precise attitude of the land at this 

 stage has not been as yet investigated. Presumably the drainage 

 along the margin of the ice at this time was southward. 



According to the topography of the Kinderhook quadrangle 

 by Mr C. C. Bassett, the Livingston lateral glacial deposits with 

 kame kettles appear to be continued across this district at a 

 slightly increasing distance away from the river as they are 

 traced northward. The map shows a large ice block hole be- 

 tween Ghent and West Ghent at an elevation of 350 feet. Due 

 north of this locality about 10 miles is a large ice block hole of 

 irregular shape nearly 2 miles in length in which lies Kinder- 

 hook lake, with its water level at 288 feet. The surface of the 

 neighboring plain at Niverville is 328 feet. South and east of 

 this ice block hole are depressions indicating the deposition of 

 the surrounding sediments in the presence of melting blocks of 

 ice. Similar small kettles are shown along the Valatie kill north 

 of Kinderhook lake, and they occur also northwest of this lake 

 at elevations between 280 and 340 feet according to the map. I 

 have interpreted these phenomena as indicating that the eastern 

 border of the ice at the Newburg stage or approximately at that 

 stage extended along the line of these kettles and that the 

 marginal ice was suffused with drift washed in along the border. 

 It also appears that the later Albany waters could not have de- 

 posited sand and clay so high as these kettles else the depressions 

 would have been filled. Kinderhook lake is decisive on this 

 point. 



Schodack glacial terrace. The above described deposits are con- 

 tinued on the north in the deltalike terrace of the Moordener kill. 

 The upper terrace between Schodack depot and Schodack Centre 

 rises to the hight of about 340 feet on its outer margin overlooking 

 the lower terrace about Albany. Its inner margin is about 360 



