

WEST 

 D 



/ 











EAST 



200- 



roo- 



SEA LEVEL- 



L 





\*/ PLEISTOCESE DEPOSITS 





sf^ — 



— /magothy 



1 I^^- — 



RARITAN 



/magothy 



/ FM. 



CLAY 



{ 



100- 

 S 200- 



\ "Jmasothy fm. 



^ -•-4-gardiners clay 



^--^*^ JAMECO GRAVEL 



300- 

 400- 

 500- 



""^^ 



LLOYD SAND 

 BEDROCK 





Channel cross sections along the Long Island north shore. Note that surface topography is due to relief of a 

 combination of Pleistocene Moraine deposits and Magothy strata (modified from Swarzenski, 1963). 



LONG ISLAND SOUND 



j S"""'" CO. 







WEST 









EAST 





300- 



F 





HUNTINGTON 

 CHANNEL (H) 



CENTERPORT 

 CHANNEL(H) 



F' 





200- 





/ 



'\,----^-^'^^ 









100- 



a _^ 



/ 



PLEISTOCENE 





^ 





100- 





\ 



DEPOSITS y^ 







u. 



200- 

 300- 







\ / 















\ y 



MAGOTHY FM 







500- 







RARITAN CLAY 











600- 





LLOYD 













SAND 



" _ 



BOUT-800 FEE 



Cross sections of a major and minor buried channel (Fig. 13) through 

 the Magothy Formation and into the Raritan Clay (modified from 

 Lubke, 1964). 



Figure 15. Subbottom profiles of major buried channels on northern Long Island. 



46 



