3D gravity magnetic and electrical inversion modeling based on prior information: A case study of the dome structure in Pengshan area, Jiangxi Province
ZHOU Yue(), GUAN Da-Wei, YAN Hai-Tao, ZHANG Xiao-Long
Geological Exploration Technologies Institute of Anhui Province,Hefei 230031,China
Three-dimensional geological modeling is an important way to realize the background of deep mineral exploration. Based on three-dimensional modeling of ore-controlling geological bodies, this method can directly describe the spatial, genetic and evolutionary relationship between the ore controlling factors. At present, the 3D modeling mainly uses geological data, but in the absence of drilling and other known information, it is difficult to construct a reliable 3D geological model. In order to overcome the disadvantages of poor accuracy and low reliability of conventional 3D geological modeling, the authors put forward an effective method based on the prior information. In this approach, a series of sections obtained by the 2.5D interactive inversion and electrical inversion, combined with the sections of 3D physical property inversion, are employed to correct the process of building a 3D geological model. With this method, the 3D geological model of the dome structure in Pengshan area has been successfully established. On this basis, the cause of the formation of the Pengshan dome structure is discussed.
周月, 官大维, 延海涛, 张小龙. 基于先验信息约束的重磁电联合三维交互反演技术实践——以彭山穹隆构造为例[J]. 物探与化探, 2021, 45(2): 308-315.
ZHOU Yue, GUAN Da-Wei, YAN Hai-Tao, ZHANG Xiao-Long. 3D gravity magnetic and electrical inversion modeling based on prior information: A case study of the dome structure in Pengshan area, Jiangxi Province. Geophysical and Geochemical Exploration, 2021, 45(2): 308-315.
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