| 甘肃早子沟金矿三维建模与综合成矿预测 |
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| 引用本文： | 李伟,陈建平,贾玉乐,周冠云,毛先成,肖克炎.甘肃早子沟金矿三维建模与综合成矿预测[J].地球学报,2020,41(2):144-156. |
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| 作者姓名： | 李伟 陈建平 贾玉乐 周冠云 毛先成 肖克炎 |
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| 作者单位： | 中国地质大学(北京)地球科学与资源学院;北京市国土资源信息研究开发重点实验室,中国地质大学(北京)地球科学与资源学院;北京市国土资源信息研究开发重点实验室,中国地质大学(北京)地球科学与资源学院;北京市国土资源信息研究开发重点实验室,中国地质大学(北京)地球科学与资源学院;北京市国土资源信息研究开发重点实验室,中南大学地球科学与信息物理学院;中南大学有色金属成矿预测与地质环境监测教育部重点实验室,中国地质科学院矿产资源研究所, 自然资源部成矿作用与资源评价重点实验室 |
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| 基金项目： | 国家重点研发计划“深地资源勘查开采”重点专项课题(编号: 2017YFC0601502) |
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| 摘 要： | 甘肃早子沟金矿是西秦岭成矿带上矿床规模较大,研究程度较高的构造蚀变岩性金矿典型代表。针对早子沟金矿床深部找矿方向与成矿潜力,本文采用三维地质建模手段,成矿有利信息提取方法,开展基于找矿地质模型的三维建模与综合成矿预测。研究结果表明:甘肃早子沟金矿适用于控矿断裂+有利岩体+有利围岩蚀变+等间距控矿的综合地质找矿模型;地质异常变量定量分析与提取结果在地质认识上均得到较好的印证,综合成矿预测结果显示矿床明显受多期次构造控制矿化叠加富集,Au1、Au9、Au30、M16等主矿体深部具有良好的找矿潜力。
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| 关 键 词： | 三维建模 地质异常提取 综合成矿预测 早子沟金矿 |
Three-dimensional Modeling and Comprehensive Metallogenic Prediction of the Zaozigou Gold Deposit, Gansu Province |
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| LI Wei,CHEN Jian-ping,JIA Yu-le,ZHOU Guan-yun,MAO Xian-cheng and XIAO Ke-yan.Three-dimensional Modeling and Comprehensive Metallogenic Prediction of the Zaozigou Gold Deposit, Gansu Province[J].Acta Geoscientia Sinica,2020,41(2):144-156. |
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| Authors: | LI Wei CHEN Jian-ping JIA Yu-le ZHOU Guan-yun MAO Xian-cheng and XIAO Ke-yan |
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| Institution: | School of Earth Sciences and Resources, China University of Geosciences (Beijing);Beijing Key Laboratory of Land and Resources Information Research and Development,School of Earth Sciences and Resources, China University of Geosciences (Beijing);Beijing Key Laboratory of Land and Resources Information Research and Development,School of Earth Sciences and Resources, China University of Geosciences (Beijing);Beijing Key Laboratory of Land and Resources Information Research and Development,School of Earth Sciences and Resources, China University of Geosciences (Beijing);Beijing Key Laboratory of Land and Resources Information Research and Development,School of Geosciences and Info-physics, Central South University;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Ministry of Education), Central South University and MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources,Chinese Academy of Geological Sciences |
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| Abstract: | The Zaozigou gold deposit in the west Qinling metallogenic belt of Gansu Province is a typical representative of large-sized tectonic-altered lithologic gold deposit with high degree of studies. To investigate the prospecting direction and metallogenic potential in the depth of the Zaozigou gold deposit, the authors adopted the three-dimensional geological modeling method and the method of extracting favorable information for mineralization to carry out the three-dimensional modeling and comprehensive metallogenic prediction based on the ore-prospecting geological model. The results show that the Zaozigou gold deposit is suitable for the utilization of comprehensive geological prospecting model of ore-controlling fault + favorable rock mass + favorable wall rock alteration + equidistant ore-controlling. The results of quantitative analysis and extraction of geological anomaly variables are well confirmed in geological understanding. The comprehensive mineralization prediction results show that the enrichment of this deposit was obviously attributed to the superimposed mineralization controlled by multi-stage structure, and the main orebodies such as Au1, Au9, Au30 and M16 have good prospecting potential in the depth. |
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| Keywords: | three-dimensional modeling geological anomaly extraction comprehensive metallogenic prediction Zaozigou gold deposit |
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