内蒙古维拉斯托地区高精度航磁调查与应用研究

陈思静; 胡祥云; 刘双

doi:10.3799/dqkx.2021.234

Volume 47 Issue 6

Jun. 2022

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Article Navigation > Earth Science > 2022 > 47(6): 2175-2189

Chen Sijing, Hu Xiangyun, Liu Shuang, 2022. Application Study on High Precision Aeromagnetic Survey in Weilasituo, Inner Mongolia, China. Earth Science, 47(6): 2175-2189. doi: 10.3799/dqkx.2021.234

Citation:

Chen Sijing, Hu Xiangyun, Liu Shuang, 2022. Application Study on High Precision Aeromagnetic Survey in Weilasituo, Inner Mongolia, China. Earth Science, 47(6): 2175-2189. doi: 10.3799/dqkx.2021.234

Chen Sijing, Hu Xiangyun, Liu Shuang, 2022. Application Study on High Precision Aeromagnetic Survey in Weilasituo, Inner Mongolia, China. Earth Science, 47(6): 2175-2189. doi: 10.3799/dqkx.2021.234

Citation:

Chen Sijing, Hu Xiangyun, Liu Shuang, 2022. Application Study on High Precision Aeromagnetic Survey in Weilasituo, Inner Mongolia, China. Earth Science, 47(6): 2175-2189. doi: 10.3799/dqkx.2021.234

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Application Study on High Precision Aeromagnetic Survey in Weilasituo, Inner Mongolia, China

doi: 10.3799/dqkx.2021.234

Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan 430074, China

Received Date: 2021-08-29
Publish Date: 2022-06-25

Abstract

Abstract

Weilasituo area is located in the metallogenic belt of the Great Xing'an Range (SGXR). With abundant structures and favorable mineralization conditions, there is great potential for continued prospecting. In this paper, aeromagnetic data of Weilasituo area were processed by means of upward continuation, wavelet analysis and boundary recognition techniques. Combined with the existing geological data, the geological structure of Weilasituo area is further improved, and the formation process of Weilasituo and Bairendaba deposit is sorted out. The information of concealed pluton in the north of Weilasituo is extracted from aeromagnetic anomaly apparent magnetic susceptibility imaging inversion results. The results show follows : (1) The NE-to-left shear fracture zone in the central Weilasituo region controls the magmatic activity and ore body migration in the region as a whole. At the same time, the fault zone is also the magnetic transition zone between the negative magnetic anomaly area in the southeast and the positive magnetic anomaly area in the northwest. So the known ore points are closely related to the structure distribution and magnetic strength distribution in the study area. Magnetic anomaly inversion results show that there may be larger hidden ore body deep underground in the north of Weilasituo. Accordingly, in this paper it divides three metallogenic prospect areas, providing certain reference for subsequent prospecting work. (2) The results of upward continuation and wavelet analysis show that Baiyinchagan-Daqingmuchang fault (F1) and Zhulikehe fault (F2) formed early and extended deep underground. It is the main fault controlling magmatic activity and tectonic development in the Weilasituo area. Combined with the results of boundary identification such as tilt angle method, the distribution of fracture and magnetic rock mass in the study area has been elaborated. Fourteen faults and eleven magnetic rocks are identified in the fracture zone. According to its formation and distribution, it is found that Weilasituo is the metallogenic center of the study area. The ore-forming fluids from deep earth rise and enrich near Weilasituo through faults F1 and F2. Then, from west to east, it migrates along the NE fault fracture zone (F3, F4, F5, F6, F7, F10, etc) to Bairendaba. Finally, two typical polymetallic deposits in the Great Xing'an Range (SGXR) area gradually formed.
- aeromagnetic,
- wavelet analysis,
- edge detection,
- metallogenic model,
- geophysics

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References(70)

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