新疆彦达木地区遥感蚀变信息提取应用研究  

Application study on remote sensing alteration information extraction in the Yandamu area,Ruoqiang county,Xinjiang

作　　者：窦雅娟 朱谷昌 肖滋泽 梁静[1,2] 

机构地区：[1]中南大学地球科学与信息物理学院,长沙410083 [2]有色金属矿产地质调查中心,北京100012 [3]中色地科矿产勘查股份有限公司,北京100012 [4]昆明理工大学,昆明650093

出　　处：《矿产勘查》2014年第2期338-344,共7页Mineral Exploration

基　　金：中国地质调查局地质调查项目(编号:12120113045000)资助

摘　　要：遥感技术不仅能克服自然地理、地域等条件的限制,而且能快速地了解研究区的区域地质背景、成矿地质条件等,尤其是遥感蚀变信息提供了一种更为直接的找矿信息,从而使地质找矿工作更加具有针对性和目的性。文章以新疆若羌县彦达木地区为研究区,利用ETM卫星数据,在分析典型岩石矿物与图像光谱特征的基础上,通过图像增强和统计分析等方法,提取出了与金属矿化有关的铁染和羟基蚀变信息。经野外异常查证,新发现了6处铜铁多金属矿化点。在遥感找矿预测研究的基础上,圈定了3处找矿靶区,为在该区部署地质找矿工作指明了方向。Remote sensing technology could not only overcome the limitations of physical geography, regional and other condi- tions, but also quickly understand the regional geological background and metallogenic geological conditions of the study area. Espe- cially remote sensing alteration extraction provides direct prospecting information which helps mineral resource survey to focus on the targets on purpose. The paper carries out a case study in the Yandamu area, in Ruoqiang county, Xinjiang using ETM satellite data. On the basis of analyzing the image and the measured spectra of typical rocks and minerals, the iron oxide stained and hydroxyl alterna- tion which is closely related to the metallic mineralization were extracted by the method of image enhancement and statistical analysis. Newly 6 copper - iron polymetallic mineralization occurences were discovered by the verification of anomalies. Three prospecting targets are selected for the further exploration on the basis of prospecting prediction study, which will help to determine the exploration plan in the next stage in the study area.

关 键 词：ETM数据 光谱特征 主成分分析 蚀变信息提取 若羌县 新疆 

分 类 号：P627[天文地球—地质矿产勘探]