Rupture process of the 2021 M7.4 Maduo earthquake and implication for deformation mode of the Songpan-Ganzi terrane in Tibetan Plateau

• DOI: 10.1073/pnas.2116445119
• Publication Date: 2022-06-03T18:10:29Z
• Authors: Han Yue; Zheng-Kang Shen; Zeyan Zhao; Teng Wang; Bonan Cao; Zhen Li; Xuewei Bao; Li Zhao; Xiaodong Song; Zengxi Ge; Chunmei Ren; Weifan Lu; Yong Zhang; Jing Liu-Zeng; Min Wang; Qinghua Huang; Shiyong Zhou; Lian Xue
• Keywords: 13. Climate action; Physical Sciences; 01 natural sciences; 0105 earth and related environmental sciences

Significance The Songpan-Ganzi terrane lies in the central-east of Tibetan Plateau, which was considered a stable block some tectonic models. Its deformation mode is crucial importance for understanding evolutionary history and seismic hazard plateau. recent Maduo earthquake occurred inside terrane. We resolve bilateral rupture process with distinct super- subshear modes this event. also find that pervasive folding structures are aligned by shear current responsible wave anisotropy strain orientation its upper crust. can be classified as distributed simple shear, receives loads from side walls produces internal earthquakes.