Ch. 2— Resource Assessments and Expectations • 73 



Figure 2-12.— EEZs of U.S. Insular and Trust Territories in the Pacific 



I • • 

 ( I 



Belau 

 (Palau 



^ J. 



au ._ / .,^--m y .^ 



^^ Trust Territory of the \ 1 



Pacific Islands 



•>. — / 



f^"" 



Howland and 

 Bal<er Islands 



Palmyra Atoll 

 Kingman Reef 



Manganese Nodule 

 Province 



V 



/ Jarvis Island 



American 

 Samoa 



612 1225 Miles 

 _J I 



In addition to the waters off the fifty states, the Exclusive Economic Zone includes the waters contiguous to the insular territories 

 and possessions of the United States. The United States has the authority to manage these economic zones to the extent 

 consistent with the legal relationships between the United States and these islands. 



SOURCES: Office of Technology Assessment, 1987; J.R. Hein, L.A. Morgenson, D.A. Clague, and R.A. Koski, "Cobalt-Rich Ferromanganese Crusts From the Exclusive 

 Economic Zone of the United States and Nodules From the Oceanic Pacific," in D. Scholl, A. Grantz, and J.Vedder, eds., "Geology and Resource Potential 

 of the Continental Margin of Western North America and Adjacent Ocean Basins," American Association of Petroleum Geologists Memoir 43, in press. 



resource potential of cobalt-rich ferromanganese 

 crusts. Using three primary assumptions based on 

 these factors, the East West Center in Hawaii 

 produced a cobalt-rich ferromanganese crust re- 

 source assessment for the Minerals Management 

 Service.'' The first assumption was that commer- 



=»A.L. Clark, P. Humphrey, C.J. Johnson, et al., Cobalt-Rich 

 Manganese Crust Potential, OCS Study, MMS 85-0006, U.S. De- 

 partment of the Interior, Minerals Management Service, 1985, 35 pp. 



cial concentrations of cobadt-rich crusts would be 

 confined to the slopes and plateau areas of sea- 

 mounts in water depths between 2,600 and 7,900 

 feet. The second assumption was that commercial 

 concentrations would be most common in areas 

 older than 25 million years, where both generations 

 of crust would be found, and less common in areas 

 younger than 10 million years, where only thin- 

 ner younger crust generation occurs. The third 

 primary assumption was that commercial concen- 



