io Quaternary Formations of Southern New Jersey. 



ward part of 2. It will be seen that the deposits of successive 

 stages would be even less distinct topographically than in the 

 case where deposition took place in valleys. 



If in this illustration it be supposed that there is deposition 

 in the valleys as well as along the shore, the deposits in the val- 

 leys would rise upstream, and would not be limited at any 

 fixed height above sea level. The separation of the marine and 

 the non-marine deposits would be difficult, and in places per- 

 haps impossible, on topographic grounds. 



If we conceive of valley deposition and of shore deposition at 

 the same time, with all the complications involved, we perhaps 

 have the proper conception of the manner in which the Quater- 

 nary factors of the Coastal Plain were laid down. 



