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| Application and indication of seismic methods in deep gold prospecting in the Xilin fault zone in the Jiaodong area |
KONG Xiao-Min1,3,4( ), SUN Chao2, ZHOU Yi-Kang1,3,4, TIAN Si-Qing2, SU Hai-Gang1,3,4, ZHOU Ming-Lei2() |
1. No. 6 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources(No.6 Institute of Geology and Mineral Resources Exploration of Shandong Province),Weihai 264200,China
2. Shandong Coalfield Geological Planning and Survey Research Institute,Jinan 250104,China
3. Ministry of Natural Resources Deep Gold Exploration and Mining Technology Innovation Center,Weihai 264200,China
4. Shandong Provincial Engineering Laboratory of Application and Development of Big Data for Deep Gold Exploration,Weihai 264200,China |
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Abstract The Xilin fault zone,intimately associated with gold and polymetallic mineralization,exhibits high potential for gold resources.In deep exploration,identifying the deep structural characteristics of ore-controlling faults plays a critical role in achieving breakthroughs in gold exploration.Through the analysis of gold metallization regularity and the reflection seismic methods,this study clarified the seismic response to the changes in the attitude of the dominant ore-controlling fault zone in the Jiaodong area.It posited that the changes in energy intensity of the seismic event on the seismic time profile,as well as large continuity deterioration zones,can indicate the changes in the fault attitude,demonstrating high mineralization potential.Moreover,this study predicted and verified the metallization targets in the area.
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Received: 28 September 2023
Published: 19 September 2024
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Geological structure diagram of the research area
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| 序号 | 岩性 | 平均密度/(g·cm-3) | | 1 | 栖霞序列片麻状英云闪长岩 | 2.91 | | 2 | 粉山子群 | 2.76 | | 3 | 荆山群 | 2.78 | | 4 | 伟德山序列二长花岗岩 | 2.65 | | 5 | 郭家岭序列花岗闪长岩 | 2.63 | | 6 | 莱阳群 | 2.64 | | 7 | 蓬莱群 | 2.72 | | 8 | 黄铁矿化碎裂状花岗岩(断裂带) | 2.70 |
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Density parametric statistics of intrusive rocks and strata in the research area[9]
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Schematic of stepped mineralization model(according to reference [14])
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Geological model of the Xilin fault
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Seismic forward migration time section
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Single shot recording
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Comparison of single shot records before(a) and after(b) denoising
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Characteristics of reflected waves in seismic migration time section
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Seismic migration time section and geological interpretation
a—seismic time profile;b—amplitude opacity display;c—geological interpretation
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