92 



NEW YORK STATE MUSEUM 



Deposits near Pelham X. Y. Hutchinson creek is a small 

 stream entering Long Island sound at East Chester. From 

 Pelham ville southward to East Chester the stream is bordered by 

 terraces of glacial material, somewhat effaced by postglacial 

 erosion. The terraces stand at an altitude of about GO feet at 

 Pelhamville and descend to or near sea level at a distance of 

 2y 2 miles. In the upper part the deposit is coarse gravel, with 

 boulders intermixed along the contact with bordering outcrops 

 of gneiss and schist. Below the 40 foot contour on the south the 

 materials are conspicuously finer. 



In the 20 foot terrace on the east side of the stream there is a 

 frequent cross-bedding from 6 to 10 inches thick with the dip of 

 the cross-beds to the southeast, and this invariably so, indicating 

 continuous current movement such as that of a strong flowing 

 stream of water. The entire section recalls that of the glacial 

 outwash. The slope a.bout 30 feet to the mile is rather steeper 

 than the distribution of the materials would indicate for a stream 

 flowing into the present sea level. If the water level was then at 

 about 20 feet, the slope of the terrace back of and above this 

 limit would accord with the slope of outwash plains. 



Englcicood sand plain. Salisbury in his work in New Jersey 

 in 1894 described many ill defined but recognizable glacial out- 

 wash deposits made in succession in the retreat of the ice across 

 the interval between the Palisades and the Orange trap range. 

 One of the most notable of these accumulations is that extend- 

 ing from Highwood through Englewood, forming the divide be- 

 tween the waters flowing southward into Newark bay and those 

 flowing northward through the Sparkill cut into the Hudson. 



A line of kames extends northeast and southwest along the 

 head of this deposit, turning northward along the east side of 

 the Northern Kailroad of New Jersey and merging into the drift 

 at the base of the Palisade slope. The elevation of the plain at 

 the southern margin of the narrow kame belt is about 60 feet. 

 Thence the plain slopes southward to about 40 feet in Englewood 

 Center, gradually descending to 20 feet in the southern part of 

 that town. At one point on its eastern margin in the stream 

 valley which borders the deposit, topset and foreset beds were 

 seen in my visit, indicating a water level at about 30 feet. 



