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。
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.
出处
《矿产与地质》
2009年第5期453-461,共9页
Mineral Resources and Geology
关键词
蚀变信息
遥感信息增强
提取方法
综合解译
alteration information
information enhancement
the methods of extraction
integrated interpretation.
