基于WorldView-3数据的蚀变矿物信息提取——以新疆坡北地区为例
EXTRACTION OF ALTERED MINERAL INFORMATION BASED ON WorldView-3 DATA:An Application of Pobei Area in Xinjiang
王平平 1孔令锋 1武保珠 1姚虎 2尹艺霖3
作者信息
- 1. 河南省自然资源监测和国土整治院,河南郑州 450016
- 2. 云南开放大学,云南 昆明 650000
- 3. 河南省有色金属地质矿产局第一地质大队,河南郑州 450016
- 折叠
摘要
使用WorldView-3数据,采用主成分分析法,确定反映铁氧化物、含Al(OH)矿物、含Fe,Mg(OH)矿物的主成分,利用主成分提取新疆坡北地区蚀变矿物信息,预测成矿远景区.采用主成分分析法分析了 WorldView-3数据的主成分特征向量矩阵,使用USGS波谱库分析了蚀变矿物组合的吸收反射波谱特征.上述二者共同确定了反映蚀变矿物信息的主成分.利用确定的主成分采用密度分割法,并结合遥感地质解译图提取蚀变矿物信息.利用已提取的蚀变矿物信息,结合研究区内含矿地层、与矿化相关的石英脉、控制矿体分布的北东向断裂构造,预测成矿远景区.
Abstract
Based on the WorldView-3 data,the principal component analysis(PCA)is adopted to determine the principal components reflecting iron oxides,and Al(OH)-bearing and Fe,Mg(OH)-bearing minerals,by which the altered mineral information in Pobei area of Xinjiang is extracted to predict the metallogenic prospect area.The principal component eigenvector matrix of WorldView-3 data is analyzed by PCA,and USGS spectral library is used to analyze the absorption reflectance spectra characteristics of altered mineral associations,which both determine the principal components reflecting altered mineral information.Based on the determined principal components,the density slicing method are used,with remote sensing interpretation map,for the extraction of altered mineral information.With the extracted altered mineral information,the metallogenic prospect area is predicted by combining with the ore-bearing strata,quartz veins related with mineralization,and NE-trending fault structure controlling the distribution of orebodies in the area.
关键词
WorldView-3/主成分分析法/蚀变矿物/成矿远景区/新疆Key words
WorldView-3/principal component analysis/altered mineral/metallogenic prospect area/Xinjiang引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据