Method for identifying ocean median ridge hydrothermal region based on geochemical characteristics of sediments

A geochemical and feature recognition technology, applied in the identification of mid-ocean ridge hydrothermal areas, can solve problems such as inability to identify inactive hydrothermal areas, and achieve the effect of reducing blindness, huge costs, and reducing work costs

Active Publication Date: 2020-03-17
SECOND INST OF OCEANOGRAPHY MNR
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Problems solved by technology

[0003] The present invention aims at the problem that the existing mainstream tools for mid-ocean ridge sulfide exploration cannot identify inactive hydrothermal areas, and provides a method that can effectively identify active and inactive hydrothermal areas according to the characteristics of mid-ocean ridge sulfides

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  • Method for identifying ocean median ridge hydrothermal region based on geochemical characteristics of sediments
  • Method for identifying ocean median ridge hydrothermal region based on geochemical characteristics of sediments
  • Method for identifying ocean median ridge hydrothermal region based on geochemical characteristics of sediments

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Embodiment Construction

[0034] The present invention will be further described in detail below with reference to the drawings and specific examples.

[0035] First, determine an area to be measured. Take the southwestern Indian Ocean ridge as an example. The following describes in detail the implementation process of the method of identifying the hydrothermal area of ​​the mid-ocean ridge based on the geochemical characteristics of the sediment in this embodiment (such as figure 1 Shown):

[0036] (1) Obtain sediment samples in the survey area, and dry the sediment samples at 50℃. The dried samples were passed through standard sieves of 20 mesh, 40 mesh, 60 mesh, 80 mesh, 100 mesh, 120 mesh, 160 mesh and 200 mesh respectively, and the composition of the corresponding particle size sample was analyzed. The composition of trace elements was tested by ICP-MS, and the composition of major elements was analyzed by XRF.

[0037] (2) Use methods such as scatter diagrams and line diagrams to compare the stability...

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Abstract

The invention discloses a method for identifying an ocean median ridge hydrothermal region based on geochemical characteristics of sediments. The method comprises the following steps: processing a sediment sample to obtain geochemical composition data of the sediment sample, calculating contributions of sediments composed of different end members to chemical compositions, obtaining the content ofhydrothermal source elements, estimating the diffusion distance of the hydrothermal source elements and finally predicting the quantity of hydrothermal activities in an investigation area and the positions where the hydrothermal activities may be produced. The method has the advantages that in ocean median ridge hydrothermal activity detection, identification of active and inactive hydrothermal areas can be achieved, the position of the hydrothermal area can be determined more accurately and conveniently and the method has the advantages of being convenient to use and efficient.

Description

Technical field [0001] The invention relates to a method for identifying the hydrothermal area of ​​the mid-ocean ridge, in particular to a method for identifying the hydrothermal area of ​​the mid-ocean ridge by using the geochemical characteristics of sediments. Background technique [0002] Mid-ocean ridge polymetallic sulfides are rich in metal elements such as Cu, Zn, Au and Ag, and can form megaton-level large deposits in a certain geological environment. In recent years, countries all over the world have attached great importance to such potential resources. The hydrothermal area of ​​the mid-ocean ridge has two types: active hydrothermal area and inactive hydrothermal area. The latter is generally larger in scale, has fewer related biological activities, and is less affected by mining and environmental protection, so it is the main direction of mid-ocean ridge sulfide mining in the future. Since the exploration of mid-ocean ridge sulfide is a completely new field, the r...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01V9/00G01N27/62G01N23/223G16C20/20
CPCG01V9/00G01N27/62G01N23/223G16C20/20
Inventor廖时理陶春辉周建平邓显明倪建宇张国堙王渊顾春华
OwnerSECOND INST OF OCEANOGRAPHY MNR