Bridgeton Formation — Local Details. 53 



The highlands at 140 to 160 feet, near Tuckerton, are nearer 

 the ocean than areas of similar altitudes to the west. But if the 

 sea has encroached notably on the land in this vicinity, the deposits 

 at Munion Field are nearer the shore than they were at some 

 earlier time. If the Delaware be taken as the base line of com- 

 parison, Munion Field is 38 miles from it, while Waterford, 

 Williamstown and Glassboro, where the Bridgeton formation 

 nas a similar altitude, are less than half as far from the river. 

 The Bridgeton (?) gravel at 140' feet at South Park, near Apple 

 Pie Hill, is about the same distance from the Delaware as the 

 Bridgeton gravel at 140 feet near Williamstown, Glassboro and 

 Elmer. If, in pre-Bridgeton time, the Mullica River had its head 

 near Arneys Mount, and developed a broad valley plain sloping 

 to the southeast, the 144-foot level at South Park would be the 

 appropriate level for gravel accumulation. But if the 144-foot 

 level is the proper Bridgeton level at South Park, 140 feet at 

 Munion Field would be too high. This tract appears to have 

 been a relative highland in Bridgeton time, and to have escaped 

 much deposition above 120 feet. Such gravel as there is here 

 at the higher levels may have been left in the course of the 

 degradation of the region from an older and higher level. 



EEUSDALE TO BARNEGAT. 



The section shown in Fig. 33 is nearly parallel to the last, 

 but is along the divide between Mullica River and Toms River 

 at the southeast, and across the basins of Crosswicks Creek and 

 Rancocas Creek at the northwest. The section is extended north- 

 westward through Allentown to the vicinity of Pennington. It 

 brings in some points which are somewhat out of line, and omits 

 many minor irregularities of surface; in other words, it is some- 

 what generalized. The topographic distinctness between the 

 Pensauken gravel and the Bridgeton gravel is well shown in this 

 section (Allentown and Jacobstown). 



The conspicuous features of the section are the highlands in 

 the vicinity of (1) Ellisdale and Jacobstown, and (2) Wood- 

 mansie and Old Half Way. 



