Table A-1. Sediment description of Coastal Engineering Research Center cores from Long Island south shore.— Continued 



Core no. 



Water depth 

 (feet) 



!^ore length 

 (feet) 



Interval 

 (feet) 



Color code 



Description 



71 



52 



8.4 



to 0.5 



5Y5/3 gray 



Silty, fine to coarse sand with rounded 

 pebbles ^ 1-inch diameter. 









0.5 to 5.0 



5Y8/2 white 



Clean, medium to coarse, very 

 weU-sorted sand. 









5.0 to 8.4 



2.5Y8/3 white 



Clean, medium to very coarse sand. 



72 



30 



5.0 



to 4.0 



5Y 7/2 gray 



SUty, very fine to fine sand. 









4.0 to 5.0 



2.5Y8/6 yeUow 



Clean, fine to medium sand. 



73 



50 



15.0 



Oto 5.0 

 5.0 to 6.0 



5Y6/1 gray 



Silt and clay. 



Organic peat 



(see Table 4 for radiocarbon date). 









6.0 to 12.5 



5Y6/2 gray 



Silt to clay. 









12.5 to 15.0 



5Y6/2 gray 



Silty, fine sand with wood fragments. 



74 



63 



4.0 



Oto 1.0 



5Y6/2 gray 



SUty, fine sand. 









1.0 to 4.0 



5Y8/2 white 



Clean, medium to coarse sand. 



75 



73 



10.0 



to 10.0 



5Y8/2 white 



Clean, fine to medium sand. 



76 



69 



3.5 



Oto 1.0 



5Y6/2 gray 



Fine sand and mud mixture. 









1.0 to 3.5 



5Y 7/2 gray 



Clean, very fine to fine sand. 



77 



72 



18.0 



to 18.0 



2.5Y 8/2 white 



Clean, fine to medium sand. 



78 



42 



5.8 



Oto 5.8 



2.5Y 8/2 white 



Clean, fine to medium, moderately 

 well-sorted sand. 



79 



50 



17.0 



Oto 1.0 



5Y 7/2 gray 



Very fine to fine sand. 









1.0 to 2.0 



5Y6/1 gray 



Micaceous silt or clay with rounded 

 pebbles. 









2.0 to 6.0 



5Y6/1 gray 



Silt to fine sand. 









6.0 to 15.0 



5Y6/1 gray 



Micaceous silt. 









15.0 to 17.0 



5Y6/2 gray 



Fine to medium sand with rounded pea 

 gravel. 



110 



60 



16.5 



Oto 8.0 



5Y8/2 white 



Clean, very fine to fine sand. 









8.0 to 16.0 



5Y6/1 gray 



Silt. 









16.0 to 16.5 



10YR6/6 brown 



Fine sand. 



94 



