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



Core no. 



Water depth 

 (feet) 



Core length 

 (feet) 



Interval 

 (feet) 



Color code 



Description 



23 



47 



11.7 



Oto 5.0 



2.5Y6/2 brown 



Clean, medium to coarse sand with few 

 pebbles of gneiss, quartz composition. 









5.0 to 10.0 



2.5Y8/2 white 



Clean, moderately well-sorted, medium 

 sand. 









10.0 to 10.1 



5Y5/1 gray 



Cohesive clay. 









10.1 to 11.7 



10YR6/4 brown 



Silty, coarse sand with pebbles 

 < 1.25-inch diameter. 



24 



56 



10.0 



Oto 1.0 



2.5Y 7/4 yeUow 



Clean, medium to coarse sand vrith 

 rounded pebbles. 









1.0 to 5.0 



lOYR 7/8 yeUow 



Medium sand. 









5.0 to 7.0 



2.5Y 7/2 gray 



Fine to medium, moderately well-sorted 

 sand vdth isolated clay patches. 









7.0 to 10.0 



lOYR 8/2 white 



Clean, fine to medium sand. 



25 



75 



7.0 



Oto 1.0 



2.5Y 7/2 light gray 



Clean, medium, moderately well-sorted 

 sand. 









1.0 to 2.0 



5Y6/1 gray 



Silty, medium to coarse sand. 









2.0 to 4.0 



10YR6/6 brown 



Clean, coarse sand with large shell 

 fragments. 









4.0 to 6.0 



5Y 8/4 yellowish-green 



Fine to medium sand. 









6.0 to 7.0 



10YR5/1 brown 



Silty, fine to medium sand. 



26 



63 



9.2 



Oto 1.0 



2.5Y 7/4 yeUow 



Clean, fine to medium, well-sorted sand. 









1.0 to 9.2 



2.5Y8/4 yellow 



SUty, fine sand. 



27 



44 



11.0 



Oto 11.0 



2.5Y8/2 white 



Clean, fine to medium, moderately 

 well-sorted sand. 



28 



32 



5.0 



Oto 0.5 



5Y6/2 gray 



Medium sand with clay balls. 









0.5 to 1.5 



lOYR 7/2 gray 



Clean, fine to medium sand. 









1.5 to 2.0 



7.5YR5/8 brown 



Clean, medium to coarse sand. 









2.0 to 3.3 



10YR6/3 gray 



Fine to very coarse sand with rounded 

 pebbles. 









3.3 to 5.0 



2.5Y8/2 white 



Clean, medium, moderately well-sorted 

 sand. 



29 



40 



11.0 



Oto 1.0 



2.5Y 7/2 gray 



Clean, fine sand. 









1.0 to 10.5 



10YR8/2 gray 



Clean, medium to coarse, moderately 

 well-sorted sand. 









10.5 to 11.0 



2.5Y 8/2 white 



Clean, fine sand. 



91 



