CHAPTER III. 



THE PENSAUKEN FORMATION. 



CONTENTS. 



General Description. 

 Sequence of events. 



Pre-Pensauken erosion. 



Pensauken deposition. 



Post-Pensauken erosion. 

 Stratigraphic relations. 



The base of the Pensauken. 



The altitude of the Pensauken surface. 



The underlying formations. 



Relations to the youngest glacial drift. 



Relations to the early glacial drift. 

 Constitution. 



Physical characteristics. 



Sources of material. 



Subdivisions. 



Geographic variations. 



Local variations in constitution. 



Bearing of constitution on origin. 

 Thickness. 



Areas southeast of the main belt. 

 Local details. 



Lower Delaware Valley. 

 Crosswicks Creek to Raritan River. 

 Outlying areas east of South River. 

 Outlying areas east of Matawan. 

 Outlying areas east of Matawan. 

 On the Atlantic slope. 



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