ETM^+铁矿化蚀变信息定量提取方法的应用——以西昆仑塔什库尔干—明铁盖一带为例  

Application of ETM^+ Ferrous Mineralized Alteration Information Quantitatively Extracting in Taxkorgan-Mingtiegai Region of the West Kunlun

作　　者：陈利燕[1,2] 

机构地区：[1]中国科学院广州地球化学研究所,广州510640 [2]黄冈师范学院计算机科学与技术学院,湖北黄冈438000

出　　处：《湖北农业科学》2010年第6期1468-1470,共3页Hubei Agricultural Sciences

基　　金："十一五"国家科技支撑计划重点项目"西昆仑恰耳隆-大同一带斑岩型铜钼矿成矿条件研究和大型矿床靶区评价技术与应用研究"专题(2006BAB07B01-04)

摘　　要：通过对ETM+不同波段光谱特征进行分析,采用波段比值和主成分分析综合法,确定研究区铁蚀变指数。利用遥感蚀变异常下限值的定量模型,提取区域内的铁化蚀变信息。结合地质背景下有关构造特征、含矿建造、岩浆活动、矿化蚀变等示矿要素,圈定出两个成矿靶区,为研究区的蚀变信息定量提取和成矿区的预测提取提供了新的思路。According to spectral characteristics of ETM ＋ different bands in the research area, the ferrous mineralization alteration index was built based on the band ratio and principal components analysis. A quantitative model to calculate the lower range value of alteration anomaly was summarized, which solved the issue of quantitatively extracting alteration information. Two mineralization targets were delineated on the basis of tectonic characteristics, magmatism, ore -bearing formation, mineralized alteration and other ore-controlling factors. This method provided a new approach to quantitatively extracting mineralized alteration information and metallogenic prediction.

关 键 词：ETM+ 蚀变异常 定量提取 铁蚀变指数 

分 类 号：P627[天文地球—地质矿产勘探]