Sandstone-type uranium ore area thermal fluid large-scale activity time and period judgment method

Abstract

The invention belongs to the technical field of uranium ore, and particularly relates to a sandstone-type uranium ore area thermal fluid large-scale activity time and period judgment method which specifically comprises the following steps: S1, collecting sandstone samples, including rich ore samples and non-ore samples, of an ore-bearing layer of a sandstone-type uranium ore area; S2, applying therich ore sample to formulation of a fluid inclusion sheet, and applying the non-ore sample to selection of heavy mineral apatite; S3, on the basis of fine observation and research of the fluid inclusion piece, completing temperature measurement work of the fluid inclusion piece, conducting comprehensive analysis on the uniform temperature data, and obtaining a uniform temperature peak value; S4,inverting the thermal evolution history of the ore-bearing stratum of the sandstone-type uranium deposit area through apatite fission tracks; and S5, projecting the uniform temperature peak value obtained in the step S3 to the thermal evolution history of the ore-bearing stratum obtained in the step S4 so as to indirectly judge the large-scale activity time and period of the thermal fluid in the sandstone-type uranium deposit area.

Description

technical field [0001] The invention belongs to the technical field of uranium mines, and in particular relates to a method for judging large-scale activity time and periods of thermal fluids in sandstone-type uranium mining areas. Background technique [0002] In recent years, with the in-depth exploration and research of sandstone-type uranium deposits at home and abroad, more and more uranium geologists have found that there are Mesozoic-Cenozoic meso-basic volcanic rocks locally developed in the interior of the basin or at the edge of the basin, and the surrounding areas develop Most of the sandstone-type uranium deposits (Kazakhstan, Uzbekistan, Russia, Ordos Basin, Songliao Basin, Erlian Basin, and Bayingobi Basin) show strong thermal fluid transformation characteristics, such as sandstone-type uranium deposits. The common development of uranium minerals, the hydrothermal origin of uranium mineral types, and the medium-low temperature hydrothermal fluids of the ore-for...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for judging the large-scale activity time and phase of thermal fluid in sandstone-type uranium ore areas, which is used to solve the problem of inability to judge when thermal fluid migrates into sandstone-type uranium ore-bearing layers in the prior art, and to Technical Problems in the Process of Uranium Mineralization

Images