自然资源遥感2025，Vol.37Issue(5)：195-205,11.DOI:10.6046/zrzyyg.2024293
基于资源一号02D高光谱数据的甘肃北山前红泉地区蚀变矿物填图及特征分析
Altered mineral mapping and characteristic analysis in Qianhongquan Area,Beishan,Gansu Province,based on hyperspectral data from the ZY-1 02D satellite
摘要
Abstract
Hyperspectral remote sensing(HRS)technology,with its high spectral resolution and extensive spectral coverage,demonstrates significant potential in geological prospecting.Focusing on the Qianhongquan gold deposit in the Beishan orogenic belt,Gansu Province,this study conducted altered mineral mapping and component analysis,using HRS data from the AHSI sensor on the ZY-1 02D satellite and the self-developed hyperspectral mineral mapping technique,GeoAHSI,revealing their spatial distribution characteristics.Besides,ground-based spectral measurements were conducted on typical profiles to validate the spectral data,thereby assessing the reliability of the hyperspectral mineral mapping results.The results indicate that the primary altered minerals in the Qianhongquan gold deposit and its surrounding rocks include sericites(low-aluminum,medium-aluminum,high-aluminum,and iron-rich muscovites),calcites,dolomites,epidotes,and chlorites.Their distribution is closely related to ductile shear zones,with the distribution of sericites,chlorites,and epidotes being particularly significant within these zones.This spatial correlation provides critical indicators for regional prospecting.Additionally,it was observed that the 2 200 nm absorption feature of sericites and the 2 250 nm absorption feature of chlorites exhibit marked enrichment in silicon(Si)and iron(Fe)around ore bodies,which is closely correlated to the chemical compositions of the minerals.By enhancing the identification of weak spectral features,this study successfully applied HRS technology to mineral identification and spatial distribution analysis.These findings provide a scientific basis for further exploration of the Qianhongquan gold deposit and offer valuable references and guidance for the application of HRS in similar deposits.关键词
高光谱遥感/蚀变矿物填图/资源一号02D卫星/甘肃北山前红泉金矿Key words
hyperspectral remote sensing(HRS)/alerted mineral mapping/ZY-1 02D(Ziyuan-1 02D)satel-lite/Qianhongquan gold deposit in Beishan orogenic belt,Gansu Province分类
计算机与自动化引用本文复制引用
何海洋,李士杰,秦昊洋,刘小玉,王思琪,孙旭..基于资源一号02D高光谱数据的甘肃北山前红泉地区蚀变矿物填图及特征分析[J].自然资源遥感,2025,37(5):195-205,11.基金项目
中国地质调查局自然资源综合调查指挥中心科技创新基金"西秦岭寨上超大型金矿高光谱蚀变矿物组合特征研究"(编号:KC20240009)、中国地质调查局地质调查项目"西南天山-帕米尔地区金矿资源潜力动态评价"(编号:DD20251167)、"阿尔泰-准噶尔北缘成矿带金矿资源潜力动态评价"(编号:DD20251166)和"东天山-北山成矿带金矿资源潜力动态评价项目"(编号:DD20230372)共同资助. （编号:KC20240009）
