摘要
以卫星遥感技术为主要手段,应用ETM+多光谱遥感数据,在东昆仑雪水河地区开展遥感地质找矿工作。通过分析区域成矿地质背景和波段数据光谱特征,采用Crosta主量分析法提取矿化蚀变信息,并利用不同异常相互验证和异常地质解译等方法筛选遥感蚀变异常,共圈定了4处遥感异常包。在野外工作中,对研究区遥感异常进行实地调查,发现多数异常与断裂带内的高岭土化和碳酸盐化等蚀变有关,可将这些蚀变作为找矿的指示标志。此外,通过分析矿区成矿作用,得出金矿成矿主要受构造控制。在靶区南侧4号遥感异常包所在的断裂破碎带中,初步圈定金矿(化)体1条,表明在构造发育地段,遥感找矿效果显著。
Using satellite remote sensing technology as the chief means,we carry out remote sensing geological prospecting work in Xueshuihe area of east Kunlun based on the data of ETM ＋ multi-spectral remote sensing. Through analyzing metallogenic geological background of the regional and the characteristics of band data spectrum,using the method of crosta major analysis to extract mineralized alteration information,and using the methods of mutual authentication of different anomalies and geological interpretation to filter alteration remote sensing anomalies,we delineat four remote sensing abnormal packets in this area.In the field work,we conduct field surveys of remote sensing in the study area,and find that most abnormalities are related to kaolin and carbonate alteration within the fault zone,so we suggest that these alteration can be taken as prospecting indicators.In addition,by analyzing mineralization in this mine,we obtain gold mineralization is mainly controlled by tectonic.We delineat one gold orebody in the fracture zones,where the No.4 remote sensing abnormal parket is located.It shows that there are obviously remote sensing exploration results in the development sections of tectonic.
出处
《黄金科学技术》
2011年第6期44-48,共5页
Gold Science and Technology
基金
中国地质调查局地质调查项目"青藏铁路沿线矿产资源遥感调查"(编号:1212010781043)资助
关键词
遥感地质调查
地质解译
蚀变
找矿前景
雪水河地区
东昆仑
Remote sensing geological survey
Geological interpretation
Alteration
Prospecting
Xueshuihe area
East Kunlun mountain
