A seabed sulfide prospecting method based on terrain analysis

Abstract

A seabed sulfide ore prospecting method based on topographic analysis, comprising the following steps: step 1: selecting a mineralization prospect zone; step 2: searching for topographic data of the mineralization prospect zone and drawing a seabed topographic map; step 3: analyzing the seabed topographic map, and planning and designing a sampling station; step 4: obtaining a sediment sample at the sampling station position in step 3; step 5: performing heavy sand mineral identification and main trace element analysis on the sediment sample, and drawing a seabed heavy mineral dispersion halo map and a geochemical halo map; step 6: performing overlay analysis on the seabed heavy mineral dispersion halo map and the geochemical halo map, and defining a favorable mineralization zone in combination with the topographic analysis. The method optimizes and innovates the sampling station setting of the seabed sediment, and the sampling station setting is more reasonable and effective; in combination with the heavy mineral and geochemical methods, a better detection effect is realized for inactive hydrothermal zone concealed sulfide and secondary enrichment mineralization; costs are lower compared with other methods.

Description

technical field [0001] The present invention relates to a seabed sulfide ore prospecting method based on terrain analysis guidance, in particular to a seabed sulfide comprehensive prospecting method based on terrain analysis results to design and plan sediment sampling stations, combined with heavy sand minerals and geochemical analysis mine method. Background technique [0002] The 21st century is the century of the ocean. In particular, my country signed the world's first polymetallic sulphide exploration contract with the International Seabed Authority. A series of achievements have been made in sulphide exploration. [0003] In the past decade, the presence of hydrothermal activities was mainly judged by water body anomalies. Equipment such as MAPR turbidity detectors, various water chemical sensors, and grabs are widely used in ocean scientific research, which improves the efficiency of investigations. However, from the perspective of ore prospecting, water anomaly de...

AI Technical Summary

Problems solved by technology

However, the main problem at present is that it is impossible to achieve the same regular network sampling as on land. Due to the cost, there are few sampling stations for marine sediments. In this case, reasonable and efficient sampling station planning is of great significance. The position setting method puts forward new requirements, especially in the mid-ocean ridge region with complex terrain, there is no corresponding theory to guide, and the use of geochemical and heavy sand mineral methods to delineate mining areas in the mid-ocean ridge region is facing new challenges

From the analysis of retrieved public data, there is currently no mature technical method to guide the setting of sediment sampling stations in seabed sulfide exploration, and to conduct comprehensive exploration in combination with heavy sand minerals and geochemical methods

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