Table A-2. Sediment description from Nassau County cores.— Continued' 



Core no. 



Water depth 

 (feet) 



Core lengtli 

 (feet) 



Interval 

 (feet) 



Description 



14 



52 



8.3 



2.5 

 5.0 

 7.5 



Coarse sand with pebbles. 

 Coarse sand with pebbles. 

 Very coarse sand with pebbles. 



15A 



38 



11.3 



Oto 1.0 

 1.0 to 11.3 



Brown, medium sand. 

 Gray, medium sand. 



16 



45 



5.3 



2.5 to 5.0 



Medium sand. 



17 



65 



5.4 



to 2.0 

 2.0 to 5.4 



Brown, medium sand with shells. 

 Clay. 



18 



74 



5.8 



to 5.8 



Grayish-brown, medium sand. 



19 



77 



10.0 



Oto 1.5 

 1.5 to 3.5 

 3.5 to 4.5 

 4.5 to 5.5 

 5.5 to 8.0 

 8.0 to 10.0 



Brown, medium sand. 



Brown and black, medium sand. 



Brown, medium sand. 



Coarse sand with pebbles. 



Brown, fine sand. 



Clay. 



20 



78 



6.1 



2.5 to 5.0 



Medium sand. 



21 



60 



6.2 



to 4.0 



Gray, coarse sand. 









4.0 to 6.2 



Gray, medium sand. 



1. The Nassau County, Long Island, cores (Fig. 2) were obtained in 1966 by Alpine Geophysical Associates, Incorporated 

 for an engineering study of a sewer outfall offshore from Jones Beach. Only incomplete log descriptions were provided 

 CERC by Alpine. Water depths (derived from map location of each core) are approximate. 



97 



