| 基于GIS技术的黔西南地区金矿找矿远景预测 |
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| 引用本文： | 于宁,刘沛,聂爱国.基于GIS技术的黔西南地区金矿找矿远景预测[J].地质找矿论丛,2016,31(3):355-361. |
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| 作者姓名： | 于宁 刘沛 聂爱国 |
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| 作者单位： | 1. 贵州理工学院，贵阳 550003; 贵州省地质调查院，贵阳 550004;2. 贵州大学,贵阳,550005;3. 贵州理工学院,贵阳,550003 |
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| 基金项目： | 贵州省工业和信息化专项资金项目((1165)资助。) |
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| 摘 要： | 文章以黔西南的金矿为研究对象,利用MORPAS软件中的证据权重法进行多源信息找矿远景预测。对多源地学数据(包括地层、断裂、褶皱、已知金矿床(点)、Au元素异常、遥感解译线环构造等)进行属性标准化,建立多源地学空间数据库;通过多源地学数据的找矿有利度分析,确定找矿远景预测因子;根据证据权重值计算的后验概率值作等值线异常图,圈定出4个Ⅰ类远景区、3个Ⅱ类远景区和7个Ⅲ类远景区;后验概率异常图中涵盖了全区91%以上的金矿床(点),具有较高的可信度。
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| 关 键 词： | 金矿 GIS 技术 找矿预测 远景区 黔西南 |
| 收稿时间： | 2015/5/15 0:00:00 |
GIS-based gold prospect prediction in the southwest Guizhou province |
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| YU Ning,LIU Pei and NIE Aiguo.GIS-based gold prospect prediction in the southwest Guizhou province[J].Contributions to Geology and Mineral Resources Research,2016,31(3):355-361. |
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| Authors: | YU Ning LIU Pei and NIE Aiguo |
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| Institution: | Guizhou Institute of Technology, Guiyang 550003, China;Guizhou Geological Survey Institute, Guiyang 550004, China;Guizhou University, Guiyang 550005, China;Guizhou Institute of Technology, Guiyang 550003, China |
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| Abstract: | Evidence weight method from MORPAS software is applied to multi-source geo-information-based gold prospect prediction in the southwest Guizhou province.The information include data of stratig-raphy,fault,fold,the known gold occurrence,Au anomly,ring structure on the satellite image.The at-tributes of the data are standardized to set up a spatial geo-data bank.Favorability for gold ore of the data is analyzed to determine the prospect prediction factor.An anomly map is drawn on basis of posterior probability value calculated by the evidence weight method.On the map 4 prospects I,3 prospects II and 7 prospects Ⅲ are lineated.Over 91% of the known gold occurrences of the area are included in the anom-ly map thus confidence of the method is high. |
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| Keywords: | gold deposit GIS ore prospecting prospect the southwest Guizhou province |
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