Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (6): 1642-1656.doi: 10.13278/j.cnki.jjuese.201506108

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Delineation of Cobalt Crust Blocks and Estimation of Co-Rich Crust Resource of Govorov Guyot,Magellan Seamounts,Pacific Ocean

Cheng Yongshou1,2, Jiang Xiaodian1, Song Shiji3, Sun Sijun2, Yu Jia2   

  1. 1. College of Marine Geosciences, Ocean University of China, Qingdao 266003, Shandong, China;
    2. National Marine Data and Information Service, Tianjin 300171, China;
    3. Automation Department, Tsinghua University, Beijing 10084, China
  • Received:2015-02-20 Published:2015-11-26

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Abstract:

In order to define the reasonable and preferable mine area for the application of oceanic Co-rich crust mine,after the modal of mining proposed by the International Seabed Authority(ISBA),based on the public dredge hauling surveying data of Co-rich crust on Govorov Guyot and the posterior probability chart of crust potential resources from the Weights-of-Evidence-Modeling ,considering the features of the regional Co-rich crust distribution of Pacific seamounts,the prospective area of Govorov Guyot crust resources firstly and then seven clusters (a total of 100 cobalt-crust ore blocks) were delineated by man-machine interactive method for delineating mining areas based on meeting regulation requirements of ISBA.The amount of wet crust resources of Govorov Guyot is calculated to be 69 487.6×104 t according to water depth. 100 crust blocks are mainly distributed on the slope,and their amount of wet and dry crust resources are calculated to be 14 092×104 t and 9 789.35×104 t respectively, including 1 961.3×104 t manganese,10.17×104 t copper, 54.06×104 t cobalt, 34.87×104 t nickle. These figures show that the scale of Govorov Guyot is very large, and its Co-rich crust resource prospect is valuable for further survey and exploitation.

Key words: Co-rich crusts, resources amount, delineating method of cobalt crust resources, marine geology, Magellan seamounts

CLC Number: 

  • P618.13

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