80° 19 



18 



80° 1 7 



— 27°39 



38 



-37 



Zone 



27°39 



38 — 



37 — 



27°36 



INDIAN RIVER SHOAL 



ISOPACHOUS MAP 

 -SURFACE TO BLUE HORIZON 



i. 



EXPLANATION 

 ® Core 

 Survey Line and Navigation Fix 



Scale in Yords 

 M H H H M I =r 



500 250 



500 



1000 



27°36 — 



Figure 35. Sediment Thickness between Water-Sediment Interface and 

 Blue Horizon in Central Part of Shoal. 



65 



