地质与勘探2025，Vol.61Issue(2)：230-242,13.DOI:10.12134/j.dzykt.2025.02.002
大兴安岭南段多金属成矿带多源遥感蚀变信息提取研究
The Extraction of Multi-Source Remote Sensing Alteration Information of Polymetallic Deposits in the Southern Great Xing'an Range:A Case Study of the Chifeng Area in Inner Mongolia
摘要
Abstract
The northern Chifeng region of Inner Mongolia contains abundant lead-zinc,silver,tin,tungsten,copper,lithium,beryllium,niobium,tantalum,molybdenum,and iron resources,making it significant in the nonferrous metal-rare metal-silver metallogenic belt of the southern Great Xing'an Range.Previous studies have conducted extensive geological,geophysical,geochemical,remote sensing,and mineral resource surveys in the southern Great Xing'an Range,particularly in the Chifeng area.However,there is still a lack of effective prospecting methods for shallow overburden areas.Considering the metallogenic geological background and spatial distribution patterns of deposits in this region,this study employed multi-source remote sensing technology to extract mineralization alteration in Hexigten Banner and Linxi County,northern Chifeng.Multispectral data(Landsat-8,ASTER)were used to extract alteration of different mineral types through principal component analysis.For GF-5 data,the mixed-tuned matched filtering technique was applied to extract mineralization alteration.The results from the three remote sensing methods were then integrated for comprehensive analysis to delineate prospective metallogenic targets.We also conducted field verification,further advancing the application of remote sensing in geological and mineral resource exploration.Based on Landsat-8 and ASTER multispectral data,iron-stained and hydroxyl-bearing(Mg-OH,Al-OH)mineral information was extracted.Three alteration minerals of muscovite,epidote,and kaolinite were identified based on the GF-5 data.Field verification confirmed that the remote sensing extraction results corresponded well with actual alteration anomalies,and tin-copper-silver-lead-zinc mineralization was discovered within the delineated target areas.This study,by combining extraction and overlay results from different data sources and validating them through field surveys,demonstrates the accuracy of the remote sensing methods used for mineralization alteration extraction.The integration of multispectral and hyperspectral remote sensing data facilitates subsequent alteration zoning analysis and more precise metallogenic prediction,thereby better serving mineral resource exploration and related fields.关键词
多源遥感数据/蚀变信息提取/主成分分析/混合调谐匹配滤波/赤峰地区/内蒙古Key words
multi-source remote sensing data/alteration information extraction/principal component analysis/hybrid tuned matched filtering/Chifeng area/Inner Mongolia分类
天文与地球科学引用本文复制引用
吴畅宇,代晶晶,武广,佘宏全,庞绪勇,赵天辰..大兴安岭南段多金属成矿带多源遥感蚀变信息提取研究[J].地质与勘探,2025,61(2):230-242,13.基金项目
中国地质调查项目(编号:DD20230054、DD20230033)、中国地质科学院基本科研业务费专项经费(编号:JKYZD202405)和国家自然科学基金面上项目(编号:42172332)联合资助. （编号:DD20230054、DD20230033）
