中国地质2026，Vol.53Issue(2)：411-432,22.DOI:10.12029/gc20240514001
山西吕梁地区上石炭统本溪组物源分析:沉积过程对沉积型锂富集的影响
Provenance analysis of Upper Carboniferous Benxi Formation in Lüliang,Shanxi Province:Effect of sedimentary processes on the enrichment of sedimentary lithium
摘要
Abstract
[Objective]The Upper Carboniferous Benxi Formation in the Lüliang area,Shanxi Province is rich in sedimentary lithium resources.However,the relationship between lithium resource enrichment and source rocks,as well as sedimentary processes,is unclear.[Methods]Based on geological surveys of field outcrops,this study comprehensively analyzes the heavy mineral characteristics of the Upper Carboniferous Benxi Formation in the Lüliang area.Tourmaline electron probe microanalysis and detrital zircon U-Pb dating were used to determine the source rocks.The results of detailed zircon trace element were performed to infer the tectonic setting of Benxi Formation.In combination with regional data,provenance analysis,and heavy mineral image interpreting,we elucidate the material sources of the Benxi Formation and explore the relationship between lithium enrichment and sedimentary processes such as weathering,transportation,and sedimentary recycling.Then we further determine the origin of lithium enrichment in the Benxi Formation.[Results]The Benxi Formation is mainly composed of fine-grained sediments.The tourmaline electron probe microanalysis results show that the source rocks are mainly derived from granitoids and their associated pegmatites and aplites,metapelites and metapsammites.Detrital zircon dating results suggest that the parent rocks are mainly felsic magmatic rocks.The comprehensive analysis shows that the provenance of Benxi Formation mainly came from felsic magmatic,metasedimentary rocks,and carbonate of Inner Mongolia Paleo-Uplift and North China Craton.The sediments of Benxi Formation formed in the retroarc foreland basin.[Conclusions]The enrichment of sedimentary lithium resources is a complex process.The source rocks provide the material for lithium enrichment,and multiple factors such as weathering,sediment recycling,and diagenesis control the enrichment of lithium resources.关键词
碎屑物源/锆石年龄/锂富集/本溪组/上石炭统/矿产勘查工程/山西Key words
clastic provenance/zircon U-Pb isotopic data/lithium enrichment/Benxi Formation/Upper Carboniferous/mineral exploration engineering/Shanxi Province分类
天文与地球科学引用本文复制引用
张英利,陈雷,张勇..山西吕梁地区上石炭统本溪组物源分析:沉积过程对沉积型锂富集的影响[J].中国地质,2026,53(2):411-432,22.基金项目
中国地质调查项目(DD20242275,DD20250208811)、地球深部探测与矿产资源勘查国家科技重大专项(2025ZD1005703)和基本科研业务费项目(KK2216)联合资助. Supported by the projects of China Geological Survey(No.DD20242275,No.DD20250208811),the Deep Earth Probe and Mineral Resources Exploration-National Science and Technology Major Project(No.2025ZD1005703)and the Fundamental Research Funds for Central Public Welfare Research Institutes(No.KK2216). （DD20242275,DD20250208811）
