物探与化探2025，Vol.49Issue(5)：1008-1017,10.DOI:10.11720/wtyht.2025.1257
中国陆域出露地壳76种元素岩石地球化学图的构建
Construction of the petrogeochemical map of 76 elements in the exposed crust across the Chinese continent:Methods,challenges,and prospects
摘要
Abstract
The exposed crust is the critical interface where the lithosphere interacts with the pedosphere,hydrosphere,and atmos-phere.The petrogeochemical map of the exposed crust can provide essential fundamental geochemical data for investigating the distribu-tions and cycles of elements among different spheres.However,the plotting of the large-scale petrogeochemical map of the exposed crust has been constrained by the limited data volume and mapping technology.Consequently,no such a map covering the Chinese con-tinent is available.This study proposed an innovative mapping technology roadmap based on over 16,000 petrogeochemical data and fundamental geological information.First,the databases for petrogeochemical information,stratigraphic structure information,and spa-tial information of geological units were constructed.Second,the geospatial information of strata and rock masses was extracted from the basic databases.Third,the petrogeochemical information was assigned to strata and rock masses to obtain their spatial distributions and element contents.Fourth,the spatial distribution patterns of 76 elements in the exposed crust were visualized using geographical infor-mation system(GIS)technology.Additionally,this study analyzed the challenges in the mapping process,including geological infor-mation accuracy,the lack of samples for special lithologies,reliability assessment,and scope of application,finally proposing corre-sponding solutions.The petrogeochemical map of the exposed crust demonstrates significant application potential,providing foundation-al data for investigating geochemical background and rock-sediment element cycling.关键词
出露地壳岩石地球化学图/中国陆域/构建方法/76种元素Key words
petrogeochemical map of the exposed crust/Chinese continent/construction method/76 elements分类
天文与地球科学引用本文复制引用
刘东盛,陈圆圆,迟清华..中国陆域出露地壳76种元素岩石地球化学图的构建[J].物探与化探,2025,49(5):1008-1017,10.基金项目
中国地质调查局地质调查项目(DD20230623,DDZ0242671) （DD20230623,DDZ0242671）
中国地质科学院青年英才项目(JKYQN202352) （JKYQN202352）
