| 鲁西金刚石原生矿近十年深部成矿预测 |
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| 关键词:primary diamond deposit deep metallogenesis physical probes 3D quantitative prediction western Shandong Province |
| 基金项目:山东省地质调查院矿产资源潜力评价专项(编号: 1212010813014);山东省地质矿产勘查开发局地质科技攻关项目(编号: KY201602);山东省科学技术厅重大科技创新工程(编号: 2017CXGC1607);山东省地质矿产勘查开发局2020年度局控地质勘查与科技创新项目(编号: 202011; 202012) |
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| Deep Metallogenic Prediction of a Primary Diamond Deposit in Recent Ten Years in Western Shandong Province |
| In recent ten years, in order to achieve a new breakthrough in diamond prospecting, Shandong Province has conducted deep metallogenic prediction based on different technical methods, aiming at the “Fight against illiteracy in depth” of primary diamond deposits in western Shandong Province. It mainly includes, the quantitative prediction of diamond resources in the depth of shallower than 1600 m, the inversion prediction of CSAMT(at depths shallower than 1000 m), the inversion prediction based on comprehensive physical methods of gravity, MT and reflection seismic (at depths shallower than 4 km), and 3D positioning and quantitative prediction of depth and extent of known orebodies based on the analysis of fault structure characteristics. This paper systematically describes the technical methods, parameter selection, and technical route of each deep prediction, and evaluates the actual effect of each prediction method. In order to further improve the effectiveness and reliability of deep metallogenic prediction, the idea of three-dimensional comprehensive information metallogenic prediction based on the effective fusion of geophysical, geological drilling, geological section and other geological information is proposed. In addition, the change law of lithology, diamond grain size, and scale form from shallow to deep is summarized for the diamond field in western Shandong Province. These results provide a basis for the effective discrimination of “facies zone” position, scale, shape, and ore bearing property of kimberlite tubes in diamond prospecting and prediction in the future, and help realize a new breakthrough in diamond deep prospecting and prediction. |
| FENG Ai-ping,LIU Chuan-peng,CHU Zhi-yuan,XIA Li-xian,XIAO Bing-jian,LI Xin-feng,XU Lei-lei,ZHAO Xiu-fang.2021.Deep Metallogenic Prediction of a Primary Diamond Deposit in Recent Ten Years in Western Shandong Province[J].Acta Geoscientica Sinica,42(6):881-894. |
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