Geochemical prospecting combination method for delineating sandstone-type uranium ore-prospecting prospecting area in coverage area

Abstract

The invention relates to a geochemical prospecting combination method for delineating a sandstone-type uranium ore-prospecting prospecting area in a coverage area, and the method comprises the following steps: carrying out the uranium ore geological survey and ground gamma total measurement in a basin-mountain coupling area, and knowing the uranium source condition of uranium mineralization in a basin and the evolution characteristics of a basin-mountain structure; performing comprehensive arrangement and research of data in the basin, and determining a possible uranium mineralization favorable area; performing controllable source audio magnetotelluric sounding, and determining the form and space distribution of a sand body beneficial to uranium mineralization; carrying out soil radon gasmeasurement and ground gamma total amount measurement in the uranium mineralization favorable sand body distribution area delineated in the step (3); comprehensively predicting the uranium mineralization prospective area; drilling follow-up verification. According to the method provided by the invention, uranium mineralization favorable areas can be rapidly screened, uranium-containing geologic bodies can be rapidly positioned, blindness of drilling construction is avoided, drilling work can be targeted, and therefore the progress of uranium ore exploration work is accelerated.

Description

technical field [0001] The invention relates to the technical field of geological prospecting of sandstone-type uranium deposits, in particular to a geophysics-chemical prospecting combination method for delineating the sandstone-type uranium deposit prospecting prospect area in the covered area. Background technique [0002] With the advancement of sandstone-type uranium deposit exploration work in recent years, shallow sandstone-type uranium deposits have basically been explored, and the current prospecting work has a tendency to gradually develop into deeper, new horizons and new types. Under the new situation, the Basin The prospecting work in the inner coverage area puts forward new requirements. The direct use of drilling to find ore in the vast coverage area is not only costly and long-term, but also has the possibility of leaking ore in large-space drilling verification. Contents of the invention [0003] Based on this, it is necessary to provide a combination meth...

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Problems solved by technology

[0003] Based on this, it is necessary to provide a combination method of geophysics and geochemistry to delineate the prospecting area of ​​sandstone-type uranium deposits in the coverage area in view of the problems of high cost, long cycle and ore leakage in the existing sandstone-type uranium ore prospecting method in the coverage area , this method can quickly screen favorable areas for uranium mineralization and locate uranium-bearing geological bodies

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