Articles | Volume 14, issue 12
Research article
21 Dec 2023
Research article |  | 21 Dec 2023

The crustal structure of the Longmenshan fault zone and its implications for seismogenesis: new insight from aeromagnetic and gravity data

Hai Yang, Shengqing Xiong, Qiankun Liu, Fang Li, Zhiye Jia, Xue Yang, Haofei Yan, and Zhaoliang Li

Related authors

DeepISMNet: three-dimensional implicit structural modeling with convolutional neural network
Zhengfa Bi, Xinming Wu, Zhaoliang Li, Dekuan Chang, and Xueshan Yong
Geosci. Model Dev., 15, 6841–6861,,, 2022
Short summary

Related subject area

Subject area: Crustal structure and composition | Editorial team: Geodesy, gravity, and geomagnetism | Discipline: Geodynamics
Crustal structure of the Volgo–Uralian subcraton revealed by inverse and forward gravity modelling
Igor Ognev, Jörg Ebbing, and Peter Haas
Solid Earth, 13, 431–448,,, 2022
Short summary
Interpolation of magnetic anomalies over an oceanic ridge region using an equivalent source technique and crust age model constraint
Duan Li, Jinsong Du, Chao Chen, Qing Liang, and Shida Sun
Solid Earth Discuss.,,, 2021
Revised manuscript not accepted
Short summary
Gravity modeling of the Alpine lithosphere affected by magmatism based on seismic tomography
Davide Tadiello and Carla Braitenberg
Solid Earth, 12, 539–561,,, 2021
Short summary
The preserved plume of the Caribbean Large Igneous Plateau revealed by 3D data-integrative models
Ángela María Gómez-García, Eline Le Breton, Magdalena Scheck-Wenderoth, Gaspar Monsalve, and Denis Anikiev
Solid Earth, 12, 275–298,,, 2021
Short summary
Mapping undercover: integrated geoscientific interpretation and 3D modelling of a Proterozoic basin
Mark D. Lindsay, Sandra Occhipinti, Crystal Laflamme, Alan Aitken, and Lara Ramos
Solid Earth, 11, 1053–1077,,, 2020
Short summary

Cited articles

Aitken, A. R. A. and Betts, P. G.: Multi-scale integrated structural and aeromagnetic analysis to guide tectonic models: An example from the eastern Musgrave Province, Central Australia, Tectonophysics, 476, 418–435,, 2009. 
Burchfiel, B. C., Chen, Z., Liu, Y., and Royden, L. H.: Tectonic of the Longmenshan and adjacent regions, Central China, Int. Geol. Rev., 37, 661–735,, 1995. 
Burchfiel, B. C., Royden, L. H., van der Hilst, R. D., Hager, B. H., Chen, Z., King, R. W., Li, C., Lu, J., Yao, H., and Kirby, E.: A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China, GSA Today 18, 4–11,, 2008. 
Chen, F. L., Xie, Y., Cui, X. Z., Sun, Z. M., Ren, G. M., and Deng, Q.: Geochronology, geochemistry and tectonic implications of basalts from the Ebian Group in the western Yangtze block, South China, J. Mineral Petrol., 38, 76–86, 2018. 
Chen, L. C., Ran, Y. K., Wang, H., Li, Y. B., and Ma, X. Q.: The Lushan Ms 7.0 earthquake and activity of the southern segment of the Longmenshan fault zone, Chin. Sci. Bull., 58, 3475–3482,, 2013. 
Short summary
The Wenchuan (Ms 8.0) and Lushan (Ms 7.0) earthquakes show different geodynamic features and form a 40–60 km area void of aftershocks for both earthquakes. The inverse models suggest that the downward-subducted basement of the Sichuan Basin is irregular in shape and heterogeneous in magnetism and density. The different focal mechanisms of the two earthquakes and the genesis of the seismic gap may be closely related to the differential thrusting mechanism caused by basement heterogeneity.