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| 内蒙古朱拉扎嘎地区成矿遥感信息提取及成矿预测研究 | |
| 引用本文： | 刘颖璠,陈建平 郝俊峰,梁丽新 崔来旺.内蒙古朱拉扎嘎地区成矿遥感信息提取及成矿预测研究[J].中国地质,2012,39(4):1062-1068. |
| 作者姓名： | 刘颖璠 陈建平 郝俊峰 梁丽新 崔来旺 |
| 作者单位： | 1. 中国地质大学,北京10083;内蒙古自治区地质调查院,内蒙古呼和浩特010020 2. 中国地质大学,北京10083 3. 内蒙古自治区地质调查院,内蒙古呼和浩特,010020 |
| 基金项目： | 内蒙古自治区政府地质勘查基金 |
| 摘 要： | 以ETM+数据为信息源,对典型矿床—朱拉扎嘎金矿的成矿地质特征和遥感解译特征进行详细研究。矿体赋存于渣尔泰山群阿古鲁沟组一段浅变质含钙质碎屑岩中。利用目视综合解译法进行了线性构造信息的提取;利用主成份分析法有效提取了铁染蚀变异常和羟基蚀变异常信息,并利用光谱角法对蚀变异常进行了优化处理;利用GIS技术将以上提取的成矿信息进行叠加分析。确定该区寻找铜金矿床的找矿标志为:(1)渣尔泰山群阿古鲁沟组一段;(2)线性构造发育;(3)铁染蚀变异常和羟基蚀变异常存在且二者套合好;(4)有较强的化探异常,且异常浓集中心套合好。并利用找矿标志在区内圈定出朱拉扎嘎北侧、西侧等6个找矿靶区。 |
| 关 键 词： | 朱拉扎嘎 ETM+ 成矿信息 叠加分析 找矿靶区预测 |
Researches on metallogenic remote sensing information extraction and metallogenic prediction in Zhulazhaga area of Inner Mongolia |
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| LIU yin-fan,CHEN Jian-ping,HAO Jun-feng,LIANG Li-xin,CUI Lai-wang.Researches on metallogenic remote sensing information extraction and metallogenic prediction in Zhulazhaga area of Inner Mongolia[J].Chinese Geology,2012,39(4):1062-1068. | |
| Authors: | LIU yin-fan CHEN Jian-ping HAO Jun-feng LIANG Li-xin CUI Lai-wang |
| Institution: | 1.China University of Geosciences,Beijing 100083,China;2.Geological Survey Institute of Inner Mongolia,Hohhot 010020,Inner Mongolia,China) |
| Abstract: | With ETM + data as the information source,the authors made a detailed study of the ore-forming geological characteristics and the remote sensing features of the Zhulazhaga gold deposit,which is a typical ore deposit.Ore bodies occur in the first member of Agulugou Formation of Zhaertaishan Group,which is composed of calcium-bearing shallow metamorphic clastic rocks.The linear structure information was extracted by visual comprehensive interpretation method,the information of abnormal alteration of iron stain and hydroxyl related to mineralization was extracted by principal component analysis,and the abnormal alteration was optimized by using spectral angle method.An overlay analysis of information by GIS technology has determined the ore-prospecting criteria for copper-gold deposits:(1) the first member of Agulugou Formation of Zhaertaishan Group;(2) the well-developed linear structure;(3) the existence and overlay of abnormal alteration of iron stain and hydroxyl;(4) Strong geochemical anomalies and well-consistent concentrated centers.Six prospecting target areas in this area,such as northern lateral and western lateral of Zhulazhaga,were delineated by using the ore-prospecting criteria. |
| Keywords: | Zhulazhaga ETM+ ore information overlay analysis exploration target prediction |
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