Ch. 4— Technologies for Exploring the Exclusive Economic Zone • 117 



Figure 4-1.— USGS Research Vessel S.P. Lee and EEZ Exploration Technologies 



Gravity 

 anomalities,' 

 rock density I 

 differences/ 



Some of ttie many technologies used to gatfier information about ttie seafloor and the mineral deposits found on or in the 

 seabed are depicted here. 



SOURCE: U.S. Geological Survey. 



