WEST 

 C 



SEA LEVEL- 



CHANNEL (0) 



FLUSHING BAY 

 CHANNEL (E) 



EAST 

 C' 



Two major north-south channels cut into Cretaceous strata and filled and covered with 

 Pleistocene sediment. The Flushing Bay channel shows evidence of both fluvial erosion and 

 subsequent widening due to glacial scour (modified from Soren, 1971). 



-^^^^ mj 



-NAVIGATION FIX NUMBERS 

 3484 86 88 90 3492 94 96 98 3500 02 04 06 3S08 K} 12 3SI4 16 18 20 3S22 24 26 39 28 



Reduction of seismic line RR (Fig. 2) depicting two major buried channels and the westward deepening of the 

 Coastal Plain erosion surface. Nassau County cores are described in Appendix A. 



Figure 14. Geologic profiles from the Long Island mainland and shelf showing the three 

 major ancestral channels and a regional erosion surface. 



44 



