| 基于GIS的秘鲁南部多源信息成矿预测研究 |
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| 引用本文： | 席振,高光明,肖娟,张杨.基于GIS的秘鲁南部多源信息成矿预测研究[J].现代地质,2013(1):108-115. |
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| 作者姓名： | 席振 高光明 肖娟 张杨 |
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| 作者单位： | 中南大学地球科学与信息物理学院;湖南省国土资源信息中心 |
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| 基金项目： | 湖南省自然科学基金项目(11JJ6029);中国博士后科学基金项目(2011M501296);中南大学庄胜矿业研究院秘鲁地质调查项目 |
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| 摘 要： | 位于南美安第斯成矿带中部的秘鲁具有良好的成矿条件。选取秘鲁南部进行成矿远景区优选,为企业快速确定勘查靶区。以GIS技术为手段,对其地质、矿产、航磁、化探、遥感等多源数据运用相关分析、化极延拓、主成分分析、比值处理等不同数据处理方法,提取多源成矿信息。在此基础上,划分单元格,建立信息量概率成矿预测模型,选择23个有利找矿变量,统计综合信息量和地质复杂度,最终圈定8处成矿远景区。提出的多源数据处理方法和建立的信息量概率成矿预测模型为多源数据合理应用于小比例尺成矿预测提供了参考。
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| 关 键 词： | GIS 找矿信息量 成矿预测 秘鲁南部 |
Study on Multi-source Information Metallogenic Prognosis Using GIS in Southern Peru |
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| XI Zhen,GAO Guang-ming,XIAO Juan,ZHANG Yang.Study on Multi-source Information Metallogenic Prognosis Using GIS in Southern Peru[J].Geoscience——Journal of Graduate School,China University of Geosciences,2013(1):108-115. |
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| Authors: | XI Zhen GAO Guang-ming XIAO Juan ZHANG Yang |
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| Institution: | 1.School of Geosciences and Info-Physics,Central South University,Changsha,Hunan 410083,China; 2.Hunan Land and Resources Information Center,Changsha,Hunan 410007,China) |
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| Abstract: | Peru,locating in Andes of South America metallogenic belt,has good metallogenic conditions.Southern Peru is selected to do prospecting area prognosis.Using GIS technology,the geological,mining,aeromagnetic,geochemical and remote sensing multi-source data experienced different processing methods such as relevance analysis,reduction to pole,continuation,principal component analysis,ratio analysis,and so on,then multisource prospecting information also was extracted.On the basis of the above,the prospecting information-content metallogenic prognosis model was built,and 23 important geological variables were selected,then information values and geological complexities were calculated,and eight metallogenic prospect areas were obtained in the end.The experiences of multi-source processing methods and information-content metallogenic prognosis model are very useful in small scale metallogenic prognosis. |
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| Keywords: | GIS prospecting information metallogenic prognosis southern Peru |
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