Leg 4 





T3 



-[ r T 



ss 



-1 1 1 r 



FIGURE 28.— USGS 1971 Vnitedgeo I surveys: 

 Leg 3, Eastern Greater Antilles, and Leg 4, Vene- 

 zuelan Continental Border. 



^(- 10 N 



IS w 



FIGURE 29.— USGS 1971 Vnitedgeo I surveys: 

 Leg 5, Continental Margin off Liberia. 



17 



