7 .' 6 ' 



r 

 i 



S«"W Umil 

 Scolt In 



J 





11/2 1 



2 S < 5 



J + 



Scan In 



Kllomittri 



1 



5 10 



Figure 5. Estuary shoals south of Cape May, New Jersey, shown by isopach map 

 of sediment thickness above the shoal base (Meisburger and Williams 1980) 



Cape Canaveral and Chester Shoal off False Cape about 15.8 km to the north. 

 Several large shoals, which Field and Duane (1974) considered abandoned and 

 somewhat modified cape-associated shoals, occur seaward of the modern shoal 

 fields . 



45. Cores in accessible parts of the modern shoals and in the abandoned 

 shoals offshore were found to be composed of well -sorted medium to coarse 

 quartz sand with a substantial amount of biogenic calcium carbonate derived 

 primarily from mollusks and barnacles. The shoal sediments were relatively 

 free of silt and clay, and there was evidence that the shoal material, as deep 

 as 3 m below the surface, may be periodically reworked. In terms of the beach 

 sand characteristics of the Canaveral Peninsula area, most of the shoal mate- 

 rial was found to be suitable for beach fill. 



46. A good example of estuary mouth shoals and a related shoal retreat 

 massif can be found near the mouth of Delaware Bay (Figure 6) . A modern shoal 

 complex extends across the mouth of the bay, except for tidal channels and the 

 Delaware Shelf Valley, which form a breach in the southern part. The Delaware 



21 



