Table A-4. Sediment description from Suffolk County sewer outfall cores.— Continued 



Core no. 



Water depth 

 (feet) 



Core length 

 (feet) 



Interval 



(feet) 



Description 



V-5 



58 



40.0 



to 16.2 

 16.2 to 17.8 

 17.8 to 21.0 

 21.0 to 25.2 

 25.2 to 26.0 

 26.0 to 27.8 

 27.8 to 28.4 

 28.4 to 40.0 



Light gray, medium sand with shell fragments and thin layers of mica. 



Gray to black, silty clay. 



No sample available. 



Gray to black, silty clay. 



Dark green to black, medium sand. 



No sample available. 



Black, silty, sandy gravel. 



Dark green to black, sUty clay. 



V-8 



60 



35.9 



to 4.1 

 4.1 to 12.0 

 12.0 to 14.4 

 14.4 to 19.2 

 19.2 to 20.6 

 20.6 to 35.9 



Brown, silty sand. 



Light gray, fine to medium sand with occasional thin clay layers. 



Gray, compact clay. 



Greenish-black, fine to coarse sand. 



Greenish-black, sandy gravel. 



Greenish-black, very compact clay. 



V.9 



55 



38.2 



to 13.5 

 13.5 to 18.0 

 18.0 to 18.7 

 18.7 to 19.0 

 19.0 to 20.3 

 20.3 to 20.7 

 20.7 to 21.0 

 21.0 to 31.0 

 31.0 to 38.2 



Gray, fine to medium sand with thin clay-silt layers. 



Gray, fine to medium sand. 



Gray, compact clay. 



Greenish-black, medium sand. 



No sample available. 



Greenish-black, fine to medium sand. 



Greenish-black sand and gravel. 



No sample available. 



Greenish-black, compact clay. 



V-10 



53 



38.2 



to 14.0 



14.0 to 19.4 

 19.4 to 23.0 

 23.0 to 28.6 

 28.6 to 28.8 

 28.8 to 33.8 

 33.8 to 38.2 



Tannish-gray, fine to medium sand with occasional layers of silty, 



fine sand. 

 No sample available. 

 Gray, fine to medium sand. 

 Gray, compact clay. 

 Dark gray gravel. 

 No sample available. 

 Greenish-black, compact clay. 



V-11 



60 



29.6 



to 13.3 

 13.3 to 13.8 

 13.8 to 29.6 



Fine to medium sand. 



Greenish-black, fine to medium sand with 1- to 2-inch gravel. 



Greenish-black, silty clay with abundant mica. 



V-12 



71 



36.8 



to 1.3 

 1.3 to 7.3 

 7.3 to 9.1 

 9.1 to 36.8 



Gray sand with shell fragments and gravel. 

 Gray, fine to medium sand becoming coarser with depth. 

 Greenish-black sandy gravel; some gravel 2 inches in diameter. 

 Greenish-black very fine sand and silty clay. 



104 



