甲玛铜多金属矿IKONOS遥感影像线性构造解译及其控矿构造分析  

Lineaments interpretation and analysis of ore-controlling structure based on high-resolution IKONOS remote sensing image

作　　者：张伟刚[1] 郭衍游[2] 

机构地区：[1]成都理工大学,四川成都610059 [2]淮海工学院,江苏连云港222005

出　　处：《科技创新导报》2011年第22期114-115,共2页Science and Technology Innovation Herald

基　　金：国土资源部西藏甲玛斑岩铜多金属矿科学基地协作研究(BH0908-1);地质调查项目念青唐古拉地区成矿条件研究与找矿靶区优选(N0807);青藏专项(编号:1212010818089);西藏华泰龙矿业开发有限公司勘探项目;技术开发项目"西藏墨竹工卡县甲玛铜多金属矿床地质特征及找矿方向研究项目(编号:E0804)";国土资源部西藏自治区矿产资源潜力评价项目(1212010811025)联合资助

摘　　要：以找矿预测和成矿作用为目的的线性构造解译和研究已成为构造、遥感和成矿作用共同关注的热点。本文对IKONOS遥感影像的全色波段与多光谱波段进行Gram-schmidt方法融合,通过傅立叶变换和空间滤波,进行空间频谱变换以分离并突出各种频率成分,增强和提取了甲马矿区微线性线性构造信息。利用GIS技术统计分析线性构造的一般特征及其与矿床空间分布上的耦合关系,根据线性构造的规模和对甲马铜多金属矿床控制作用的意义不同,将其分为区域尺度一级控矿构造和二级控矿构造,从而指导甲马的外围及深部找矿勘查实践。In ore prediction and mineralization process,linear structure interpretation and research have been common focuses among structure,remote sensing and prospecting for ore deposits.Fusion of multispectral and panchromatic images based on the Gram-schmidt method is carried out on IKONOS images,and spacial frequency spectrum transformation is used to separate and highlight the various frequency components through the Fourier transforming and spatial filtering,then the micro linear structure information of Jama mining area is enhanced and extracted.By using GIS to statistical analyse the general characteristics of linear structure and the relation between linear structure and deposit distribution,in light of the scale of linear structure and different meaning of linear structure in controlling Jama polymetallic deposit,the linear structure is divided into regional scale level ore-controlling structure and secondary ore-controlling structure,so as to guide the ore exploration practice in periphery and deep position of Jama.

关 键 词：甲马 高分辨率遥感 线性构造 控矿特征 

分 类 号：TD22[矿业工程—矿井建设]