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The application effect of EH-4 under different geological backgrounds |
Ying-Bin LI1,2, Yi LI1,2, Zhan-Bin ZHANG1,2, Wei ZHANG1,2 |
1. Airborne Survey and Remote Sensing Center of Nuclear Industry, Shijiazhuang 050002, China 2. Key Laboratory of Uranium Resources Geophysical Exploration Technology, China Nuclear Industry Group Company, Shijiazhuang 050002, China |
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Abstract EH-4 has been applied to many fields, such as mineral exploration and engineering exploration. Nevertheless, because of the limitation of the acquisition frequency as well as geological and geophysical conditions, the application effects of EH-4 in different geological backgrounds are different. In order to prove the argument that the geological geophysical work in EH-4 is reasonable, the authors analyzed the EH-4 effects in exploration of Lianshangguan hard rock type uranium, sandstone type uranium deposit in Erlian Basin and mined out region of Yili basin in Xinjiang. The results show that, in the hard rock area, the depth of EH-4 exploration generally can reach 1000 m or so, and the detection of faults, the contact zone of rock bodies and its strike and spatial distribution can yield fairly good application effect; in sedimentary basins, the exploration effect of EH-4 is affected by the overall depth of resistivity and surface resistivity, the exploration depth may sometimes only reach two hundred or three hundred meters, but can sometimes reach five hundred or six hundred meters. Although the depth of exploration is not big, but the shallow geoelectric properties reflect good effect.
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Received: 13 July 2018
Published: 31 May 2019
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岩性 | ρ/(Ω· m) | 最大值 | 最小值 | 平均值 | 浪子山组二云片岩 | 933 | 98 | 267 | 浪子山组石英岩 | 16500 | 7853 | 8598 | 混合花岗岩 | 2568 | 1453 | 2145 | 变粒岩 | 2598 | 1257 | 2087 | 变辉长岩 | 3056 | 1025 | 1952 |
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The statistical table of rock resistivity in Lianshanguan area[8,9]
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L14 line RaA method for radon and AMT inversion resistivity section interpretation interpretation map 1—group of three prodigal mountain marble; 2—group two prodigal mountain schist; 3—a prodigal mountain group quartzite; 4—Paleoproterozoic Neoarchaean mixed granite; 5—mixed granite; 6—inferred geological boundary; 7—inferred contact; 8—inferred fault; 9—drilling and ore position
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地层代号 | 主要岩性 | ρ/(Ω·m) | 第四系(Q) | 黄土、黏土、沙、砾石 | 5~150 | 新近系(N)、古近系(E) | 泥岩、砂质泥岩、粗砂岩、砂砾岩、砾石 | 10~150 | 白垩系上统(K2e) | 盐层、泥岩、细砂岩、含砾中粗砂岩 | 6.0~40 | 白垩系下统 | 巴彦花群二段(K1bs2) | 红色泥岩、粉砂岩,其间夹中细砂岩 | 2.0~12 | 含砾粗砂岩、粗砂岩、泥质砂岩 | 10.0~20 | 巴彦花群一段(K1bs1) | 炭质泥岩、中细砂岩 | 5~10 | 泥—砂—砾混杂堆积 | 5~40 | 灰白色花岗质砾岩夹泥质中细砂岩 | 16~44 | 侏罗系上统(J3) | 火山碎屑岩、火山熔岩 | 50~500 | 侏罗系中下统(J1-2) | 砂岩、泥岩、碳质页岩 | 50~500 |
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The statistical table of resistivity parameters of caprock and rock mass in Erlian Basin[11]
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Inversion of resistivity profile and geological interpretation map of H15K01 line (2008 AMT surveying L02 line) 1—Erlian group of The upper Cretaceous; 2—the lower Cretaceous Saihan formation; 3—pre Cretaceous basement; 4—sandstone; 5—mudstone; 6—angle unconformity geological boundary; 7—facies boundary; fault 8—inference
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Inversion resistivity profile of 2006L02 line
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Inversion resistivity profile of L11 line
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Interpretation section of L29 line interpretation
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