Method for obtaining key alteration mineral combination of sodium metasomatic type uranium deposit

Abstract

The invention belongs to the field of combination of a remote sensing technology and a geological exploration technology, and particularly relates to a method for obtaining a key alteration mineral combination of a sodium metasomatic type uranium deposit, which comprises the following steps of: preprocessing high-resolution remote sensing data; carrying out atmospheric correction on the preprocessed high-resolution remote sensing data; establishing extraction models of hematite, chlorite and carbonate information; and using the hematite information extraction model, the chlorite information extraction model and the carbonate information extraction model to carry out wave band operation on the surface feature reflectivity image to respectively obtain the hematite information, the chlorite information and carbonate distribution information, thereby completing the acquisition of the key alteration mineral combination of the sodium metasomatic type uranium deposit. According to the method, the reflectivity spectral characteristics are analyzed, the wave band width of the high-resolution remote sensing data is compared, the information of hematite, chlorite and carbonate is extracted by using the high-resolution remote sensing data, then the metallogenic prospective area of the sodium metasomatic type uranium deposit is screened, and the method has the characteristics of high spatial resolution, rapidness and effectiveness.

Description

technical field [0001] The invention belongs to the field of combining remote sensing technology and geological exploration technology, and specifically relates to a method for obtaining key alteration mineral combinations of sodium metasomatized rock type uranium deposits. Background technique [0002] In view of the current complex international environment and the increasing demand for uranium resources from nuclear power development, the importance of domestic uranium resource exploration is increasing day by day. Sodium metasomatized uranium deposits, as an important type of uranium deposits, need to be paid more attention to the acquisition technology of its key ore-forming elements. [0003] According to the scientific research results of many uranium geology researchers in the early stage, sodium metasomatous rock type uranium deposits are closely related to alteration minerals such as hematite, chlorite and carbonate, and these three minerals often exist at the same...

AI Technical Summary

Problems solved by technology

Hyperspectral remote sensing data has a very high resolution accuracy for the extracted altered mineral species, but the spatial resolution of satellite hyperspectral remote sensing is very low, and it is difficult to obtain aerial hyperspectral data with both high spatial resolution and high spectral resolution. It is very important to subdivide the mineral types of the altered minerals extracted from the obtained satellite high-score data

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