| Citation: |
GENG Tao, GUO Peihong, FENG Zhihan, ZHAO Tingyan, DU Hui, LIU Shengrong. 2023. Geophysical Exploration Eethod of Concealed Hard Rock Type Uranium Deposit with Complex Topographic Conditions in Huayangchuan Area, North Qinling Mountains. Northwestern Geology, 56(2): 225-244. doi: 10.12401/j.nwg.2022048
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Geophysical Exploration Eethod of Concealed Hard Rock Type Uranium Deposit with Complex Topographic Conditions in Huayangchuan Area, North Qinling Mountains
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Abstract
Uranium resources are very important strategic energy mineral resources. Qinling area is an important uranium ore forming area in China. The Huayangchuan uranium polymetallic deposit found in Huayangchuan area is located in the eastern part of the North Qinling uranium metallogenic belt. At present, many uranium deposits and uranium mineralization points have been found in and around Huayangchuan, and the uranium prospecting potential is huge. In order to meet the requirements of geophysical exploration methods and technologies for the exploration of concealed hard rock type uranium resources under complex terrain conditions in Huayang Chuan area and the realization of ore prospecting in the periphery, aerial geophysical surveys at different heights and scales have been carried out in Huayang Chuan uranium mining area with integrated airborne geophysical exploration systems such as airborne gamma ray spectrometry/magnetic method, airborne transient electromagnetic/magnetic method, airborne gravity/magnetic method, etc. At the same time, corresponding gravity, magnetic The effectiveness and applicability of these methods in the exploration of uranium resources under complex terrain conditions have been verified by geophysical exploration such as radioactive survey, IP sounding of different devices and multiple electromagnetic sounding, and demonstration exploration work has been carried out in the favorable areas for prospecting in the periphery. On this basis, the combination of geophysical exploration methods and technologies in different exploration stages of concealed hard rock type uranium deposits under complex terrain conditions has been screened out, It provides the geophysical exploration method and technology support for the breakthrough of uranium ore prospecting in Huayangchuan area, and also has reference value for the exploration of hidden uranium deposits and other hidden metal deposits in other complex conditions.
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Keywords:
- complex topographic /
- concealed /
- hard rock type uranium deposit /
- geophysical /
- exploration methods /
- combination
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References
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GENG Tao, GUO Peihong, FENG Zhihan, ZHAO Tingyan, DU Hui, LIU Shengrong. 2023. Geophysical Exploration Eethod of Concealed Hard Rock Type Uranium Deposit with Complex Topographic Conditions in Huayangchuan Area, North Qinling Mountains. Northwestern Geology, 56(2): 225-244. doi: 10.12401/j.nwg.2022048
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Figure 1.
Characteristics of airborne radioactivity in Huayangchuan mining area
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Figure 2.
Schematic diagram of uranium prospecting prospect delineated by airborne gamma ray spectrometry in Huayangchuan area
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Figure 3.
The results of airborne gamma ray spectrometry in Huayangchuan area have changed the exploration direction of uranium deposits
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Figure 4.
Characteristics of airborne gravity anomaly in Huayangchuan mining area
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Figure 5.
Comprehensive map of Aeronautical transient electromagnetic and geology of Huayangchuan mining area and peripheral high-value response area
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Figure 6.
Characteristics of aeromagnetic anomalies in Huayangchuan mining area
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Figure 7.
Gravity and magnetic anomaly characteristics of main test section
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Figure 8.
Schematic diagram of coincidence between radon abnormal halo and ore bearingvein rock in Huayangchuan mining area
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Figure 9.
Comprehensive inversion section of two-dimensional DCIP deep structural exploration of the main experiment section
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Figure 10.
SIP apparent polarization and apparent resistivity inversion section of the main experiment section
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Figure 11.
Two dimensional apparent resistivity inversion results of AMT deep structural exploration of the main experiment section
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Figure 12.
(A) WFEM apparent resistivity inversion and (B) density inversionresults comparison of the main experiment section
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Figure 13.
Schematic diagram of radon concentration anomaly in huangjiagou area
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Figure 14.
Schematic diagram of DCIP-3D results in huangjiagou area
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Figure 15.
Schematic diagram of radon concentration anomaly in yuantou area
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Figure 16.
Schematic diagram of DCIP–3D results in yuantou area
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Figure 17.
Geophysical collaborative exploration work flow for dividing the stage of uranium ore forming favorable areas
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Figure 18.
Work flow of geophysical cooperative exploration in the optimization stage of prospecting target area
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Figure 19.
Work flow of geophysical cooperative exploration in the stage of drilling verification and deep prospecting