o£ the surrounding skelf floor and probably represents the original bottom 

 before dumping. The boundaries of the mound are best defined by the 5- 

 foot isopach contour. Within this area there is approximately 2.1 million 

 cubic yards (1.6 million cubic meters) of sediment. Additional data are 

 needed to determine if all of this sediment is similar to the medium to 

 coars-e sand in core 94. The bottom topography of the spoil area outside 

 the borrow site indicates that other mounds of spoil are also present 

 within the general vicinity. These may contain sand usable for beach fill 

 and warrant further investigation. 



e. Core Sites . Suitable sediment for beach fill was found in cores 

 from 23 other sites; however, there are insufficient data to determine the 

 extent and thickness of these deposits. With the exception of borrow areas 

 A to D, the cores are considered the most promising sites for further 

 exploration. Pertinent data concerning the suitable material in these 

 cores are contained in the table. 



III. SUMMARY 



1. The Inner Continental Shelf in the Cape Fear region of North 

 Carolina was surveyed for sand deposits suitable for beach restoration 

 and maintenance. 



2. Data collected during the field survey consist of 512 statute 

 miles (824 kilometers) of high-resolution seismic reflection profiles 

 coverage and 124 cores of the sea floor ranging from 2 to 20 feet (0.6 to 

 6.1 meters) in length. 



3. Desirable sand for restoration and maintenance of beaches in the 

 study region should be in the Wentworth scale, medium to coarse size range 

 (0.250 to 1.00 millimeter, 2.0 to 0.0 phi). 



4. Twenty-seven sites where sand deposits were potentially suitable 

 for offshore borrow were located and described (Figs. 2 to 8; Table). 



