| 三维成矿预测与预测评价——以东昆仑成矿带红旗沟—深水潭金矿为例 |
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| 引用本文： | 胡桥,陈建平,田业.三维成矿预测与预测评价——以东昆仑成矿带红旗沟—深水潭金矿为例[J].现代地质,2018,32(2):335. |
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| 作者姓名： | 胡桥 陈建平 田业 |
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| 作者单位： | (1中国地质大学(北京) 地球科学与资源学院，北京100083；2北京市国土资源信息开发研究重点实验室，北京100083) |
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| 基金项目： | 科技部国家重点研发计划项目(2017YFC0601502)。 |
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| 摘 要： | 红旗沟—深水潭金矿是东昆仑成矿带中典型的构造蚀变岩型金矿，矿体严格受控于破碎蚀变带。通过对东昆仑地区成矿地质背景的梳理以及金矿成矿过程的分析，在构建三维地质模型的基础上提取成矿有利因子，建立找矿预测模型，并计算找矿信息量。在此基础上，从最优分级分析、精度分析和结果分析三方面进行信息量分级评价、预测区分级评价、数据精度评价、找矿预测模型的有效性评价以及找矿靶区的定位精度评价、预测资源量估算和找矿概率评价等研究。研究共圈定4处找矿靶区，并估算全区金资源量约165 t。结果表明红旗沟—深水潭金矿的找矿潜力较大，后期应该重视已知矿体的深部及边部区域的重点勘查。
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| 关 键 词： | 成矿预测 预测评价 地质建模 信息量 红旗沟—深水潭 东昆仑成矿带 |
3D Metallogenic Prediction and Prediction Evaluation:A Case Study in Hongqigou-Shenshuitan Gold Deposit in the Eastern Kunlun Metallogenic Belt |
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| HU Qiao,CHEN Jianping,TIAN Ye.3D Metallogenic Prediction and Prediction Evaluation:A Case Study in Hongqigou-Shenshuitan Gold Deposit in the Eastern Kunlun Metallogenic Belt[J].Geoscience——Journal of Graduate School,China University of Geosciences,2018,32(2):335. |
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| Authors: | HU Qiao CHEN Jianping TIAN Ye |
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| Institution: | (1School of Earth Sciences and Resources, China University of Geosciences, Beijing100083, China;
2Beijing Key Laboratory of Development and Research for Land Resources Information, Beijing100083, China) |
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| Abstract: | Hongqigou Shenshuitan gold deposit belongs to a kind of tectonic altered rock type gold deposits in the eastern Kunlun metallogenic belt, and the orebodies are controlled by the fracture zone within mine district. Through an integrated analysis of geological setting and gold mineralization, the 3D digital mine is modeled. We have extracted the favorable range of controlling factors and constructed prospecting prediction model with the spatial analysis of GIS, and the prospecting information content method was used to synthesis metallogenic prediction. Moreover, from the three aspects of the optimal classification analysis, the accuracy analysis and the result analysis, we have done the research on the following aspects: the information content grading evaluation, the prospecting area grading evaluation, the data accuracy evaluation, validity evaluation on the prospecting prediction model and the positioning precision evaluation of the prospecting target area, and estimate of resource reserves and prospecting probabilistic assessment.In this study, 4 prospecting targets have already preliminarily delineated, and the estimated gold reserves are about 165 tons in this area. The study results show that the Hongqigou Shenshuitan gold deposit has considerable prospecting potential and attention should be paid to the deep area and the border area of the known orebodies in the study area. |
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| Keywords: | metallogenic prediction prediction evaluation geological modeling information content Hongqigou Shenshuitan eastern Kunlun metallogenic belt |
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