Paleovalley type uranium ore exploration method

A detection method, the technology of river valley, applied in the field of geological exploration of sandstone-type uranium deposits, can solve the problems that there are not many prospecting methods, it is difficult to find out the origin and metallogenic environment of this type of uranium deposits, and the cost is high

Inactive Publication Date: 2017-03-15
核工业二〇八大队
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Problems solved by technology

In the past work, there were not many prospecting methods for paleoriver-type uranium deposits, the overall effect was not obvious, the efficiency was low, and the cost was hi

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Embodiment Construction

[0029] A method for detecting ancient valley-type uranium deposits, which specifically includes the following steps:

[0030] Step 1. Field core cataloging, through geological, geophysical and hydrological cataloging, to obtain the characteristics of sandstone cores in ancient river valleys, and draw comprehensive columnar diagrams of boreholes;

[0031] In the field core cataloging process, geological analysis of the cores obtained from the ancient river valley sand bodies, including color analysis and material composition analysis; according to the obtained lithology, color and material composition, draw a borehole histogram; through geophysical prospecting, Hydrological cataloging, obtaining core gamma exposure and hydrogeological characteristics;

[0032] The color of the ancient river valley sand body core presents different colors for the oxidized sand body and the reduced sand body. Among them, the oxidized sand body is green or light green, and the reduced sand body is gray o...

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Abstract

The invention relates to the technical field of sandstone type uranium ore geological exploration, and particularly discloses a paleovalley type uranium ore exploration method. The method comprises the steps that 1, field core logging is performed, paleovalley sandstone core features are acquired through geological and geophysical prospecting and hydrological logging, and a drilling comprehensive histogram is drawn; 2, mineral features of the paleovalley sandstone core are acquired through sampling the sandstone core and performing geological and geophysical prospecting sampling analysis; 3, a paleovalley planar map and a paleovalley profile map are drawn, and paleovalley sand body strata are divided according to drilling data and sandstone core logging; and 4, an oxidation region and a restoration region are divided according to the paleovalley sand body strata, an oxidation zone front line of an interface of the oxidation region and the restoration region is determined, a delineated uranium ore body is analyzed through drilling, searching and verifying. According to the exploration method, the ore-forming environment of the paleovalley type uranium ore can be effectively judged, division for the paleovalley sand body is performed, a preferable ore-finding area is delineated, and a technical method and a basis are provided for ore-finding of the paleovalley type uranium ore.

Description

Technical field [0001] The invention belongs to the technical field of geological exploration of sandstone-type uranium deposits, and specifically relates to a method for detecting ancient river valley-type uranium deposits. Background technique [0002] Ancient river valley type uranium deposits are an important type of sandstone uranium deposits in the north. When the lithology and lithofacies of continental basins vary greatly, it is difficult to form traditional regional interlayer oxidation zones, which are controlled by the basement structure of the basin. The ancient river valley sand bodies cannot be ignored. The exploration of ancient river valley-type uranium deposits prospecting technology has become one of the important prospecting directions. Because the formation of this type of uranium deposit is controlled by ancient river valley sand bodies and metallogenic environment, and the riverbeds are often diverted and crossed, coupled with the different formation reasons...

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Application Information

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IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 彭云彪陈霜陈安平杨建新康世虎申科峰鲁超刘璐
Owner 核工业二〇八大队
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