Paleo-interlayer oxidation zone recognition method for sandstone-type uranium deposit

A technology of interlayer oxidation zone and identification method, applied in the field of sandstone type uranium deposit exploration

Inactive Publication Date: 2018-02-09
核工业二〇八大队
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for identifying ancient interlayer oxidation zones of sandstone-type uranium deposi

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Embodiment Construction

[0022] A method for identifying ancient interlayer oxidation zones of sandstone-type uranium deposits, the method specifically includes the following steps:

[0023] Step 1. Carry out field core cataloging and identification, and obtain core identification features of ancient interlayer oxidation zone and primary reduction zone

[0024] In the process of field drilling core cataloging, the cores of the ancient interlayer oxidation zone and the original reduction zone were compared, and the identification characteristics of the above two cores were obtained: in terms of color, the sandstone in the ancient interlayer oxidation zone is green and light green, The original sandstone is gray and off-white; in terms of inclusion of clasts, there is little biotite in the sandstone clastics of the ancient interlayer oxidation zone, while the content of biotite in the primary sandstone clastics is relatively large; in terms of the inclusion of characteristic minerals It is said that car...

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Abstract

The invention relates to the technical field of sandstone-type uranium deposit exploration and particularly discloses a paleo-interlayer oxidation zone recognition method for a sandstone-type uraniumdeposit. The method comprises steps: 1, field core logging and recognition are carried out to acquire core recognition characteristics of the paleo-interlayer oxidation zone and a primary reduction zone; 2, in view of different zones, system sampling and analysis and test are carried out to obtain mineral characteristics of the paleo-interlayer oxidation zone and the primary reduction zone; and 3,through field drill core logging and sample analysis and recognition, a paleo-interlayer oxidation zone and a primary reduction zone are divided from a vertical direction and a plane, and a sandstoneuranium deposit range is acquired. The method of the invention can be widely applied to inner-zone sandstone-type uranium deposit prospecting and exploration; through the method, inner-zone sandstone-type uranium deposit prospecting and exploration are guided, huge prospecting breakthrough is acquired, the northern east of Ordos Basin is already developed into the largest uranium resource base inChina, and adequate resources are provided for China's national defense construction and nuclear power development.

Description

technical field [0001] The invention relates to the technical field of exploration of sandstone-type uranium deposits, in particular to a method for identifying oxidation zones between ancient layers of sandstone-type uranium deposits. Background technique [0002] The interlayer oxidation zone is mainly developed in the permeable sandstone layer sandwiched in the aquitard layer in the continental sandstone series, and is formed by the oxygen-containing confined water running down the oxidized sand body from the edge of the basin along the aquitard layer. The interlayer oxidation zone provides an extremely favorable hydrogeochemical environment for the leaching, migration and enrichment of uranium. At present, many sandstone-type epigenetic uranium deposits with industrial value that have been discovered in the world are generally controlled by red and brown-yellow interlayer oxidation zones. shape. [0003] At present, a number of extra-large and ultra-large sandstone ura...

Claims

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Application Information

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IPC IPC(8): G01V9/00
CPCG01V9/00
Inventor 彭云彪陈安平苗爱生王贵陈霜刘文平戴明建
Owner 核工业二〇八大队
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