.34 NEW YORK STATE MUSEUM 



plain, all in fruit farms. M.r Charles Young owns the point by the 

 station and his house stands on the edge of the plain with altitude 

 about 165 feet. The sand plain is 5 to 10 feet higher. 



North from Marlboro are terraces and gravel and clay pits, espe- 

 cially on the west side of the valley. Many evidences are seen of 

 the leveling work of waters, many being inferior in height as should 

 be expected. 



The eastern part of Poughkeepsie is on a sand plain built by 

 Fallkill and Caspar creeks. The Vassar College campus occupies 

 the southeast portion of the plain, with an altitude of 175 to 

 180 feet. 



Rhineheck sheet. Hyde Park stands on the north end of a ter- 

 race plain which stretches south 3 miles. The plain shows clearly 

 on the map, which makes the height 200 feet, about the theoretic 

 summit altitude. Some wave work may be seen along the highway 

 in low, flat bars and swells of sand. Two creeks, one at each end 

 of the plain, contributed material. 



Rondout creek, the largest tributary of the Hudson south of the 

 Mohawk, enters the Hudson at Kingston. One might expect to 

 find here a large delta, but the deposition took place far up-stream, 

 above Rosendale. However, detached plains and terraces record 

 the summit level, about 220 feet. The broad sand plain at Rosen- 

 dale, contoured at 220 feet, seems too high for its latitude as an 

 estuary deposit, and may represent a distinct water body, glacial 

 waters, or perhaps supergradation by the Rondout creek. 



The village of Rhinebeck, two and one-half miles east of the 

 Hudson, is located on a delta plain of the Landsmans kill. The 

 plain, one and one-half miles in north and south extent, has been 

 bisected by the creek, the village standing on the north half. The 

 altitude of the flat plain is 210 to 215 feet, only some 15 feet 

 beneath the profile. The existence of the village at this place is 

 evidently wholly due to the plain. 



The upper left corner of the Rhinebeck sheet shows a part of 

 the plain of the Esopus creek, considered below. 



Rosendale sheet. This quadrangle does not touch the Hudson 

 river but covers features important in this study. We see here 

 the Rondout river with its large tributary, the Wallkill ; and .the 

 Esopus creek that joins the Hudson at Saugerties, on the Catskill 

 quadrangle. 



The Rosendale plains are contoured at 220 feet, over 10 feet 

 above our profile. Assuming that the map is correct, excess in 



