CHAPTER IV. 



THE CAPE MAY FORMATION. 



CONTENTS. 



General Description. 



Post-Pensauken erosion. 



Deposition of the Cape May gravel. 



Distribution. 



Constitution. 

 Local Details. 



Trenton and eastward. 



In the lower Delaware drainage basin. 



In the Atlantic drainage basins. 



In the lower Raritan drainage basin. 



General Description. 



POST-PENSAUKEN EROSION. 



After the deposition of the Pensauken formation, a long 

 period ensued when conditions favored erosion where deposition 

 had just taken place. During this epoch of erosion the Pen- 

 sauken formation was removed from large areas, and dissected 

 to about its present condition in others. In the great lowland 

 which extended from Raritan Bay to Salem by way of Trenton 

 and Bordentown, the formation was greatly reduced in many 

 places where it was not altogether removed. As already indi- 

 cated, it is not certain that its original thickness remains at any 

 point, though it probably does in some places between South 

 Amboy and Delaware River. From Bordentown to Salem, its 

 remnants are more meager. 



This long epoch of erosion preceded the last glacial epoch. 

 The details of its history are recorded chiefly in the fragmentary 

 condition of the formation last deposited. It would appear that 

 II quat d6i) 



