Effective geophysical method for finding shallow sandstone type uranium mine within 800m

Abstract

The invention discloses an effective geophysical method for finding shallow sandstone type uranium mine within 800m, which comprises four methods, and is characterized in that the first method is a controllable source audio magnetotelluric method, the second method is a gamma energy spectrum measurement method, the third method is a soil natural thermoluminescence measurement method, and the fourth method is a <210>Po method; the sandstone-type uranium ore can be found through the combination of the four methods. The method has the beneficial effects that the difference between the resistivityof the substrate and the resistivity of the cover layer in a research area is large, the substrate can be inferred according to a CSAMT method, and the substrate structure and intruding rock mass distribution can be further inferred by combining geological conditions; the distribution range of shallow ancient riverways with the burial depth of 800m or less between the southeast part of Ulanqab depression and the southwest part of Qiharigetu and the Saihan group of Saihangaobi can be delineated, and the prospecting space of ancient riverway sandstone type uranium deposit (PCSTU) ore deposits is broadened.

Description

technical field [0001] The invention relates to a method for finding sandstone-type uranium deposits, in particular to an effective geophysical method for searching shallow sandstone-type uranium deposits within 800 meters. Background technique [0002] Geographically, the Erlian Basin is located in the central part of the Inner Mongolia Autonomous Region. It is distributed in a northeast direction, with the Daxinganling uplift on the east, the Bayinbaolige uplift on the north, the Wenduermiao uplift on the south, and the Suolunshan uplift on the west. . The basin is about 1000km long from east to west, 20-40km wide from north to south, with a total area of ​​10.9×104km2. [0003] Paleochannel sandstone-type uranium deposits in the Erlian Basin are mainly developed in the Tertiary paleochannels in the Saihangaobi-Bayan Ula area. It is located in the central and western part of the Erlian Basin, in the north-central part of Inner Mongolia, and is part of the Inner Mongolia P...

AI Technical Summary

Problems solved by technology

To detect paleochannel-type sandstone uranium deposits, the ore-forming environment should be detected first; the reducing agents associated with the ore-forming environment are mainly sulfides and organic matter, which are heavy mineralization markers, and they have obvious intensification rate anomalies in terms of physical properties. At present, there is no better method on the market to find shallow sandstone-type uranium deposits

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