地质学报2026，Vol.100Issue(5)：1594-1604,11.DOI:10.19762/j.cnki.dizhixuebao.2025289
华北板块二叠纪—三叠纪之交火山活动驱动的湖泊缺氧
Lacustrine anoxia driven by volcanic activity at the Permian-Triassic boundary
摘要
Abstract
The Siberian Traps volcanism at the Permian-Triassic boundary(PTB),which triggered the end-Permian mass extinction,not only fundamentally restructured marine ecosystems but also profoundly impacted terrestrial ecosystems.To elucidate the coupling between PTB volcanism,terrestrial ecosystem collapse,and lacustrine anoxia,this study investigates lacustrine sediments from the Sunjiagou and Liujiagou formations in the WY-U-01H core(Xiangyuan coalfield,Qinshui basin,North China Plate),employing high-resolution geochemical proxies,including P/Al,V/(V+Ni),V/Cr,and Ni/Co ratios.The results reveal pronounced lacustrine anoxia events in the upper Sunjiagou to lower Liujiagou formations,as indicated by mean values of V/(V+Ni)=0.8,V/Cr=2.8,and Ni/Co=7.2.These events coincide with elevated P/Al ratios,which 2～3 times background values,indicating a strong link between anoxia and enhanced paleoproductivity.These geochemical anomalies are synchronous with global PTB phenomena—including negative carbon isotope excursions,terrestrial/marine extinctions,Hg-Ni anomalies,and volcanic CO2 surges—supporting the hypothesis that Siberian Traps eruptions triggered lacustrine anoxia and productivity spikes via multipronged mechanisms(e.g.,greenhouse gas release,climate warming,and nutrient influx).This study provides critical evidence for volcanism-driven terrestrial environmental changes during the PTB transition,offering insights into predicting modern aquatic deoxygenation under global warming.关键词
二叠纪—三叠纪之交/湖泊缺氧/古生产力/火山活动/华北板块Key words
Permian-Triassic boundary/lacustrine anoxia/paleoproductivity/volcanic activity/North China Plate引用本文复制引用
王野,鲁静,杨玉竹,张彤,杨敏芳,周凯,张培新,叶澄卓,张春华,邵龙义..华北板块二叠纪—三叠纪之交火山活动驱动的湖泊缺氧[J].地质学报,2026,100(5):1594-1604,11.基金项目
本文为辽宁省科技计划联合计划(编号024-BSLH-261)、辽宁省教育厅青年项目(编号LJ212410153028)、国家自然科学基金项目(编号42472227,42172196)和国家自然科学基金重点基金项目(编号42530208)联合资助的成果. （编号024-BSLH-261）
