Mantle Plume-Lithosphere Interactions Beneath the Emeishan Large Igneous Province

Zhang，Anqi1,2; Guo，Zhen3; Afonso，Juan Carlos1,4; Shellnutt，J. Gregory5; Yang，Yingjie1,6

2024-01-28

10.1029/2023GL106973

Geophysical Research Letters   影响因子和分区

0094-8276

1944-8007

The formation of large igneous provinces (LIPs) has been widely believed to be linked to mantle plume activity. However, how the plume modifies the overlying lithosphere, particularly its compositional structure, remains uncertain. Here, we characterize the deep thermochemical structure beneath the Emeishan LIP (ELIP), which is a well-known Permian plume-related LIP in China, by taking a multi-observable probabilistic inversion. Our results find a clear correlation between the lithospheric composition with the ELIP's concentric zones. We infer that the fertile feature of the lithospheric mantle in the ELIP's inner zone was caused by the plume-derived fertile magmas which infiltrated into and chemically refertilized the ambient depleted lithosphere. This plume-modified lithospheric compositional structure is likely to be preserved after the plume event, while the present lithospheric thermal structure has been mainly influenced by the subsequent thermal-tectonic activity. Our results improve our understanding of the physicochemical interactions between the lithosphere and ancient plume.

Emeishan large igneous province mantle plume-modified lithosphere multi-observable probabilistic inversion thermochemical structure

SCI ; EI

英语

第一 ; 通讯

GEOSCIENCES

2-s2.0-85183415621

Scopus

1.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,China
2.State Key Laboratory of Geodesy and Earth's Dynamics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan,China
3.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,China
4.Faculty of Geo-Information and Earth Observation (ITC),University of Twente,Enschede,Netherlands
5.Department of Earth Science,National Taiwan Normal University,Taipei,Taiwan
6.Guangdong Provincial Key Laboratory of Geophysical High-resolution Imaging Technology,Southern University of Science and Technology,Shenzhen,China

Zhang，Anqi,Guo，Zhen,Afonso，Juan Carlos,et al. Mantle Plume-Lithosphere Interactions Beneath the Emeishan Large Igneous Province[J]. Geophysical Research Letters,2024,51(2).

Zhang，Anqi,Guo，Zhen,Afonso，Juan Carlos,Shellnutt，J. Gregory,&Yang，Yingjie.(2024).Mantle Plume-Lithosphere Interactions Beneath the Emeishan Large Igneous Province.Geophysical Research Letters,51(2).

Zhang，Anqi,et al."Mantle Plume-Lithosphere Interactions Beneath the Emeishan Large Igneous Province".Geophysical Research Letters 51.2(2024).