A method for identifying and locating favorable sand bodies of sandstone-type uranium deposits in basalt-covered areas

Abstract

The invention belongs to the technical field of uranium mineralization prediction, and specifically relates to a method for identifying and locating favorable sand bodies of sandstone-type uranium deposits in a basalt-covered area, comprising the following steps: Step 1: find out the scope of the basalt-covered area on the surface; Step 2: calculate the basalt The buried depth of the basement in the coverage area; Step 3: Find out the basement lithology of the basalt-covered area, and determine the favorable sandstone-type uranium ore-forming section; Step 3.1: Interpret the basement lithology of the aeromagnetic data; Step 3.2: Determine the favorable sandstone-type uranium ore-forming section; Step 4: Find out the characteristics of sand bodies in the sedimentary strata covered by basalt; Step 4.1: Carry out broadband magnetotelluric profile survey; Step 4.2: Find out the characteristics of sand bodies in the sedimentary strata covered by basalt; Step 5: Identify and locate the formation of sandstone-type uranium deposits Ore-favorable sand bodies; Step 5.1: Identify and locate favorable ore-forming sand bodies in the basin area; Step 5.2: Identify and locate favorable ore-forming sand bodies in favorable channel development areas in uplift areas; Step 6: Drill to verify favorable ore-forming sand bodies.

Description

technical field [0001] The invention belongs to the technical field of uranium ore-forming prediction, and in particular relates to a method for identifying and locating favorable sand bodies of sandstone-type uranium deposits in basalt-covered areas. Background technique [0002] At present, the sandstone-type uranium resources produced abroad under basalt cover amount to 660,000 tons, which shows great value for uranium ore prospecting. The study found that in addition to water vapor, the fluid composition in the basalt thermal generation zone also has H 2 , He, N 2 , Na, K, CO 2 、CH 3 , halogen, sulfate, etc., in the fluid migration channel, the water-rock interaction is strengthened, the fluid extracts uranium in the surrounding rock, and redistributes it in ancient river valleys, permeable layers, sandstone layers, and sandstone layers in the upper part of the weathered crust, forming Enrichment ore of uranium. Therefore, identifying and locating favorable sand bod...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies of the prior art, and provide a method for identifying and locating favorable sand bodies in sandstone-type uranium ore-forming areas in basalt-covered areas, which is used to solve the problem of sandstone-type uranium ore prospecting in basalt-covered areas in my country that cannot meet the requirements of the prior art slow technical issues

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