沉积与特提斯地质2025，Vol.45Issue(2)：317-328,12.DOI:10.19826/j.cnki.1009-3850.2024.10003
华南早寒武世火山活动与黑色页岩多金属层的关系初探
Preliminary study on the relationship between Early Cambrian volcanism and polymetallic layers in black shales of South China
摘要
Abstract
Black shale exhibits extensive development in South China,with stable stratigraphic distributionunder the anoxic conditions of global deep ocean water during the Early Cambrian.Various elements,such as Ni,Mo,V,platium group elements(PGEs),and rare earth elements(REEs),are enriched to different degrees in the basal layers.However,the source of these polymetals remains controversial,with conflicting theories suggesting origins from seawater,hydrothermal fluids,or a mixture of both.Simultaneously,volcanic activities occurred extensively in South China.In order to explore the relationship between volcanic activities and the accumulation of polymetallic layers,sedimentological,mineralization,diagenetic chronology,and geochemical analysis were conducted in this study.The results show that:(1)Volcanic activities occurred in multiple stages,with volcanic rocks marking stratigraphic boundaries,from the Ediacaran to Early Cambrian;(2)There is a clear spatiotemporal and geochemical correlation between volcanic rocks and polymetallic layers;(3)Sedimentary structure,mineral composition,and geochemical information,such as S,Fe,Hg,and Mo isotopes,indicate that volcanic activities contributed to the enrichment of polymetals.关键词
早寒武世/火山活动/黑色页岩/多金属层/华南Key words
Early Cambrian/volcanic activity/black shale/polymetallic layer/South China分类
地质学引用本文复制引用
杨镇..华南早寒武世火山活动与黑色页岩多金属层的关系初探[J].沉积与特提斯地质,2025,45(2):317-328,12.基金项目
贵州省基础研究计划项目(黔科合基础-ZK[2022]一般213) （黔科合基础-ZK[2022]一般213）
贵州省教育厅青年项目(黔教基[2022]157) （黔教基[2022]157）
