西藏谢通门县雄村矿区岩石地面波谱特征及其在矿化信息识别中的应用  

The Ground Spectrum Property of the Xiongcun Ore District in Xietongmen County Xizang (Tibet) and Its Application to Prospecting for the Mineralization Information

作　　者：王海平[1] 杨竹森[1] 张彤[2] 

机构地区：[1]中国地质科学院矿产资源研究所,北京100037 [2]中国石油天然气总公司遥感中心,北京100083

出　　处：《地质论评》2010年第3期440-447,共8页Geological Review

基　　金：国家"十一五"科技支撑项目(课题编号2006BAB01A04)的研究成果

摘　　要：成矿作用过程中产生的矿化蚀变,在遥感图像上往往是一种非直接的弱相关信息。文章以西藏谢通门县雄村铜多金属矿区为例,通过典型矿床地面波谱及其特征分析,在视反射率图像模拟及其与典型矿床地面波谱反射率的相关分析基础上,运用两类矿床的地面波谱模型对通门乡子区矿化蚀变信息进行识别研究。雄村铜多金属矿区的地面波谱特征研究表明,视反射率图像及其地空相关分析方法不仅能快捷地进行铜多金属矿化信息预测,还可有效地区分矿化异常,在冈底斯地区多金属矿化信息识别方面有较好的找矿预测效果,是青藏高原进行铜多金属找矿预测的颇为有效的遥感地质找矿新技术之一。Different rocks in the Xiongcun ore district in Xietongmen county, Xizang （Tibet） have their respective characteristic spectra, which are very helpful to the explanation of remote sensing data and the search for copper—polymetallic deposits by remote sensing technology.The paper deals with basic principles and technique method of mineralization information discrimination based on apparent reflectivity image, and presents a case study carried out by authors. Based on the study of the apparent reflectivity image and the ground spectrum from copper—polymetallic deposits in the Xiongcun ore district, the ETM apparent reflectivity image in the region has been transformed into ground—space correlation image with the nine ground—space models which were established by means of a correlation study of the ground—space spectrum.Through the analyses of the ground—space correlation image, some mineralization image anomalies have been distinguished,and some basic problems concerning the practical application of the discrimination—classification method for remote sensing have been discussed in the paper. The authors hold that the analyses of ETM ground—space spectrum correlation is valuable in the prospecting and prognosis of copper —poymetallic deposits in Gangdese, Xizang （Tibet）.

关 键 词：波谱特征 视反射率 遥感图像识别 雄村 西藏 

分 类 号：P627[天文地球—地质矿产勘探]