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NEW YORK STATE MUSEUM 



About 800 feet south of Roseton station the material under the 

 terrace is a yellowish loamy clay, thinly stratified. This may be 

 a portion of the secondary cone of the delta of Wappinger's creek 

 at New Hamburg. North of this a cutting has been made in the 

 terrace escarpment, the section exposed showing alternating 

 layers of yellow and black sand. 



From Newburg to New Windsor the clay is overlain by the 

 extensive delta deposits of Quassaic Creek and Moodna River. To 



Clay at New Windsor showing glaciated bowlder in it. 



the east of Mrs T. Christie's yard the clay, which is mostly blue 

 and thin layered, is overlain by fine gravel and sand obscurely 

 cross stratified in places. Over this is three to four feet sandy 

 soil. The upper layers of the clay are wrinkled in places, proba- 

 bly owing to the oblique downward pressure of the overlying 

 delta deposits. It seems likely that at this spot only a small 

 portion of them remain, much having probably been eroded. At 

 Lang's yard, south of Christie's, there is four to six feet of sand 

 and gravel over the clay, of the same nature as that previously 

 mentioned. Scattered all through the clay are cobbles of lime- 

 stone. The upper strata are loamy and contorted, while under- 

 neath in the yellow clay, which is very tough, the stratification 

 is almost entirely obliterated. At the next bank, also belonging 

 to Lang, there is six feet of overlying sand and gravel. Scattered 

 through the clay are several bowlders of Calciferous sandrock, 



