n6 Quaternary Formations of Southern New Jersey. 



field and Jacobstown. The isolated hills at 125 to 130 feet, south 

 of Chesterfield, are perhaps outliers of this scarp. 



CROSSWICKS CREEK TO RARITAN RIVER. 



General statement. — From Allentown and White Horse north- 

 east to South River, the Pensauken forms a nearly continuous 

 cover, being interrupted only by the valleys of the larger streams 

 flowing northwest, — Pond Run, Miry Run, Assanpink Creek, 

 Bear Brook, Millstone River, Cranbury Brook, Lawrence Brook 

 and some of its branches. Newtown, Hamilton Square, Dutch 

 Neck, Hightstown, Cranbury, Prospect Plains, Dayton, Dun- 

 hams Corners, and Hardenbergh Corners, are on the Pensauken 

 plain ; Princeton Junction, Monmouth Junction, and New Bruns- 

 wick are on its northwestern border; and Jamesburg and Old 

 Bridge, on its southeastern border (Figi 55). 



1 § 



S HamiltonScjuare £•> 



Sea level' 



S n ijrr^i .g^yy^ 



LEGEND 



°K 6 h l 



CRETACEOUS 



PENSAUKEN 

 (ARKOSE) 



fc 



iDutcKNeck^ 



Feet 

 1000- 



TSO - 

 500 



250 - 



Old Bridge 



SouthAmbqy 



SCALES 



Horizontal scale 



sMiles 



Fig. 55- 



Section through Hamilton Square, Dutch Neck and South Amboy, showing 

 relations of the Pensauken formation. 



Northeast of Bordentown, the two-fold division of the pre- 

 Pensauken surface (Swedesboro and Woodstown, p. 91) has 

 not been recognized, and the scarps to the southeast of the main 

 Pensauken area were less well defined. In place of a well- 

 defined scarp, there were numerous headlands projecting out 

 from the southeast. These headlands were probably the rem- 

 nants of a scarp dissected by erosion. To the southwest, where 

 the scarp (the outcrop of the Englishtown sand) was more con- 

 tinuous, it limited the arkose Pensauken. To the northeast, 



