基于遥感的河南卢氏西部地区蚀变信息提取与分析

近矿围岩蚀变和构造分析是找矿研究的重要内容,遥感异常信息提取、遥感地质解译,结合野外调查能查明围岩蚀变分布情况和构造特征。本文以河南省卢氏县西部地区的成矿远景区为研究区域,选用ASTER多光谱数据和SPOT5高分辨率数据,利用遥感图像波段比值处理方法及特征主组分分析、光谱角填图分类等分析方法,对该地区重要成矿区段做矿化蚀变信息提取及遥感地质综合分析并提供了新的找矿靶区。

Research of Wall Rock Alteration Information Extraction and Exploration by Rem te Sensing in the Western Part of the Lushi District,Henan

Wall rock alteration and structures are important to exploration.Extracting information of anomalies from,and geological interpreting of remote sensing data,combined with field investigation,can map out the spatial distribution of wall rock alterations and recognize structures.This paper studies the ore prospect in the western part of the Lushi District,Henan Province,using ASTER multi-spectral data and SPOT5 high resolution data.Using techniques including band ratioing,principal components analysis,and spectral angle mapper classification,anomaly information on mineralization and alteration were extracted and comprehensive remote sensing geological analyses were carried out on the important metallogenic sections in the district,by which new exploration targets have been generated.