| 宁镇中段地区蚀变遥感信息提取研究 |
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| 引用本文： | 张术根,姚翠霞,王超.宁镇中段地区蚀变遥感信息提取研究[J].矿产与地质,2009,23(5):453-461. |
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| 作者姓名： | 张术根 姚翠霞 王超 |
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| 作者单位： | 中南大学,地学与环境工程学院,长沙,410083 |
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| 摘 要： | 隶属于长江中下游铁铜金多金属成矿带的宁镇中段地区，以矽卡岩型（接触交代型）铜多金属矿化为主要矿化类型。发生矿化蚀变的矿物中生成的特征离子或基团的诊断性波谱特征是利用遥感数据提取蚀变信息的理论依据。本文基于典型蚀变矿物的波谱特征，利用比值计算、主成分分析（PCA）以及光谱角填图（SAM）的方法进行了蚀变遥感信息增强和提取，最后结合地质信息进行综合解译，建立了遥感成矿预测单元，为研究区找矿靶区的确定提供决策支持。
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| 关 键 词： | 蚀变信息 遥感信息增强 提取方法 综合解译 |
Study on the remote sensing information extraction of alteration in the middle part of Ningzhen |
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| ZHANG Shu-gen,YAO Cui-xia,WANG Chao.Study on the remote sensing information extraction of alteration in the middle part of Ningzhen[J].Mineral Resources and Geology,2009,23(5):453-461. |
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| Authors: | ZHANG Shu-gen YAO Cui-xia WANG Chao |
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| Institution: | (Central South University, Changsha, Hunan 410083, China) |
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| Abstract: | The middle part of Ningzhen iron-copper-gold polymetallic metallogenic belt in the mid-lower part of Changjiang River mainly is skarn-type （contact metasomatic type） copper-polymetallic mineralization. The diagnostic spectrum of characteristic ions or molecular groups from altered minerals provides the theoretical basis for extracting alteration information using the remote sensing data. Based on these typical spectrum characters of altered minerals, the authors have finished enhancing and extracting altered minerals informa- tion with the methods of calculating ratios, PCA and SAM, and accomplished integrated interpretation com- bining with geology information and built up the remote-sensing metallogenic prognosis zone, It can provide decision support for confirming the prospecting target zone. |
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| Keywords: | alteration information information enhancement the methods of extraction integrated interpretation |
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