遥感-化探信息融合方法在新疆鄯善县大平梁地区找矿靶区预测中的应用  

Application of the Remote Sensing and Geochemical Information Fusion Method in the Prediction of Prospecting Target in the Dapinliang Area,Shanshan County,Xinjiang

作　　者：陈威[1] 祝明明[2] 曹晓峰[1] 吕新彪[1,2] 

机构地区：[1]中国地质大学(武汉)资源学院,武汉430074 [2]中国地质大学(武汉)地质调查研究院,武汉430074

出　　处：《地质科技情报》2016年第6期184-193,共10页Geological Science and Technology Information

基　　金："十二五"国家科技支撑计划新疆305项目(2011BAB06B04-05)

摘　　要：通过对新疆鄯善县地质及大平梁典型矿床的研究,综合地质、地球化学及遥感多元信息的融合信息,建立了大平梁地区的综合信息找矿模型。运用比值法和主成分分析法对研究区的ASTER遥感数据进行了蚀变信息提取,运用衬值异常法提取了研究区的1∶5万化探异常信息。在此基础上,运用基于套合的RGB彩色合成、基于数据层的彩色空间变换(HIS变换)和二维相关编码对研究区的遥感蚀变信息与化探信息进行了融合处理,提取了综合的找矿信息,结合异常区的基础地质特征及成矿地质条件,圈定了1个A级、1个B级、1个C级靶区,为该区后期地质工作及找矿提供了依据。An integrated information exploring model is established to obtain metallogenic conditions in Dapinliang area by using the geological, geochemical and remote sensing metallogenic fusion information. According to this method, the alteration information from the ASTER remote sensing data in the study ar ea has been extracted by using the ratio method and principal component analysis method and the abnormal information from the 1 ： 50 000 geochemical data has been extracted by using cluster analysis method. Based on the study of the correlation between geochemical information and remote sensing spectral properties, the comprehensive information of prospecting has been extracted by using color synthesis based on RGB color space, HIS transformation based on data layer and two-dimensional coding. By using the comprehensive information of prospecting, 1 A-order prospecting targets, 1 B-order prospecting targets, 1 C- order prospecting targets are recognized in this study, and thus are recommended for further exploration and prospecting works.

关 键 词：大平梁 遥感蚀变 化探异常 信息融合 找矿靶区 

分 类 号：P588.12[天文地球—岩石学]