地球与行星物理论评（中英文）2026，Vol.57Issue(1)：27-50,24.DOI:10.19975/j.dqyxx.2024-021
大火成岩省对陆壳结构、大陆裂解和全球气候变化的影响
Effects of large igneous provinces on the continental crustal structure,continen-tal break-up and global climate changes
摘要
Abstract
Large igneous provinces(LIPs)play an important role in crustal growth,metallogenesis of metal elements,global climate changes and life evolution.Despite extensive studies of near-surface geological records of LIPs,our knowledge about the middle-lower crustal intrusions of LIPs is very limited.By comparing geological and geophysical data from the Emeishan LIP,the Siberian Traps,and the Central Atlantic Magmatic Province,we investigate the effects of the magmatic plumbing system of LIPs on the continental crustal structure and global cli-mate.Due to differences in the stress regime,the lithospheric thickness,and plume-lithosphere interaction,each LIP may contain a unique plumbing system and crustal structure,which will affect the dynamic evolution of the continental lithosphere.Thermal-mechanical erosion of the lithosphere by a mantle plume will cause lithospheric thinning.Under regional far-field extensional stress,the thermal weakening effect by eruption of LIPs along pre-ex-isting weak zones can enhance the lithospheric extension and trigger the continental break-up.By contrast,if LIPs are far away from divergent plate boundaries or under regional compression,magma underplating and crustal intru-sions will increase the crust-mantle coupling and the lithospheric strength,and consequently allow the long-term stability of cratons.Volcanism of LIPs is one of the controlling factors of global climate change,meanwhile large amounts of CO2 and methane released by contact metamorphism between intrusions and surrounding rocks also contribute to climate changes.The plumbing system of LIPs establishes a bridge between deep mantle processes and the Earth's surface system.Recognition and modeling of the plumbing system of LIPs will provide new in-sights into the plume-lithosphere interaction,metallogenic mechanisms of LIPs,as well as the relationships between LIPs,the global climate change and massive extinction events.关键词
大火成岩省/地幔柱/岩浆通道系统/地壳结构/岩浆底侵/全球气候变化Key words
large igneous provinces/mantle plume/pluming system/crustal structure/magma underplating/global climate changes分类
天文与地球科学引用本文复制引用
姚尧,王勤..大火成岩省对陆壳结构、大陆裂解和全球气候变化的影响[J].地球与行星物理论评（中英文）,2026,57(1):27-50,24.基金项目
国家自然科学基金资助项目(41825006) （41825006）
国家重点研发计划资助项目(2023YFF0803304)Supported by the National Natural Science Foundations of China(Grant No.41825006)and National Key R&D Plan of China(Grant No.2023YFF0803304) （2023YFF0803304）
