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

A favorable sand body, identification and positioning technology, applied in the field of uranium mineralization prediction, can solve the problems of slow and unsatisfactory sandstone-type uranium ore prospecting progress, and achieve good consistency

Active Publication Date: 2021-11-30
BEIJING RES INST OF URANIUM GEOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0051] A method for identifying and locating favorable sand bodies for ore-forming sandstone-type uranium deposits in basalt-covered areas, the method comprising the following steps:

[0052] Step 1: Identify the extent of the surface basalt overburden

[0053] Collect a 1:200,000 geological and mineral map of the study area, delineate the area covered by surface basalt on the map; determine the age of basalt eruption and possible intrusive strata on the comprehensive stratigraphic columnar section map.

[0054] Step 2: Identify the basement depth of the basalt-covered area

[0055] The 200,000 gravity data of the basalt-covered area were collected, and the Parker inversion method was used to perform quantitative inversion, and the basement depth map of the basin in the study was calculated. The area where the basement depth is less than 100m is def...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V11/00G01V3/08G01V3/38
CPCG01V3/081G01V3/38G01V11/00
Inventor 李子颖刘武生李西得吴曲波汪硕
Owner BEIJING RES INST OF URANIUM GEOLOGY
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