Lithosphere-asthenosphere interactions beneath Northeast China and the origin of its intraplate volcanism

Anqi Zhang1,2,3; Zhen Guo1,3,4; Juan Carlos Afonso2; Heather Handley2; Hongkun Dai2; Yingjie Yang2; Y. John Chen1,3

2021-11-02

10.1130/G49375.1

GEOLOGY   影响因子和分区

0091-7613

1943-2682

Northeast China hosts one of the largest Cenozoic intraplate volcanic regions in the world. However, the mechanisms that generate the volcanism, its spatial-temporal distribution, and compositional signatures remain highly debated due to the lack of high-resolution images of the mantle's thermochemical structure. We jointly inverted new surface-wave dispersion data, surface heat flow, geoid height, and elevation data to image the fine-scale thermal and compositional structures beneath northeast China and infer regions of partial melting in the mantle. Our model reveals a complex circulation pattern in the asthenosphere and a highly variable lithospheric structure. Combining predictions from our model with independent geochemical data from recent basaltic volcanism, we demonstrate that the generation, location, and composition of intraplate volcanism in this region are controlled by the interaction between shallow asthenospheric circulation and lithospheric thickness. The modeling approach and correlations between basaltic composition and mantle state identified in our study are globally applicable to assessing mantle conditions over time in other continental regions.

mq edu au bulk density seismic velocity melt distribution

SCI ; EI

英语

第一 ; 通讯

National Science Foundation of China[42122027,41974052,41774052] ; Australian Research Council["LP170100233","DP190102940"]

Geology

Geology

WOS:000749744100002

GEOLOGICAL SOC AMER, INC

20220811698485

Structural geology

Geology:481.1

GEOSCIENCES

人工提交

1.Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
2.ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS)/GEMOC, Department of Earth and Environmental Sciences, Macquarie University, Sydney, NSW 2109, Australia
3.Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
4.Shanghai Sheshan National Geophysical Observatory, Shanghai 201602, China

Anqi Zhang,Zhen Guo,Juan Carlos Afonso,et al. Lithosphere-asthenosphere interactions beneath Northeast China and the origin of its intraplate volcanism[J]. GEOLOGY,2021,50(2):210-215.

Anqi Zhang.,Zhen Guo.,Juan Carlos Afonso.,Heather Handley.,Hongkun Dai.,...&Y. John Chen.(2021).Lithosphere-asthenosphere interactions beneath Northeast China and the origin of its intraplate volcanism.GEOLOGY,50(2),210-215.

Anqi Zhang,et al."Lithosphere-asthenosphere interactions beneath Northeast China and the origin of its intraplate volcanism".GEOLOGY 50.2(2021):210-215.