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Crustal Structure and Anisotropy in Lower Yangtze Craton and its Implications for Geodynamic Evolution.

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Title: Crustal Structure and Anisotropy in Lower Yangtze Craton and its Implications for Geodynamic Evolution.
Authors: Wu, Shanshan1,2,3 (AUTHOR) wupengtao2009@163.com, Wei, Zigen4 (AUTHOR) weizigen@apm.ac.cn, Liu, Fang1,2 (AUTHOR), Wu, Yuqin5 (AUTHOR), Gu, Qinping6 (AUTHOR), Liu, Fei1,2 (AUTHOR), Jia, Sichao1,2 (AUTHOR)
Source: Pure & Applied Geophysics. May2026, Vol. 183 Issue 5, p2329-2342. 14p.
Subjects: Anisotropy, Cratons, Seismic anisotropy, Lithosphere, Plate tectonics, Mantle plumes, Deformations (Mechanics)
Abstract: Since Mesozoic, the western subduction of Pacific and Philippine Sea plate beneath the Eurasian plates caused significant and complex tectonic deformation of Lower Yangtze Craton and its surroundings. However, the deformation patterns and geodynamic evolution of Lower Yangtze Craton and its surrounding areas remain enigmatic. In this work, we used P wave receiver functions with temporary and permanent seismic stations to detect the crustal structures and anisotropy in this region. Crustal thinning and high Vp/Vs ratios are detected in the Middle-Lower Yangtze metallogenic belt, which may be caused by the upwelling of upper mantle and intrusion of mantle-derived basaltic magma into the lower crust. The fast direction of crustal anisotropy in Hefei basin exhibits nearly east–west direction, which may be caused by the extension and thinning effect of underlying asthenospheric convection and flow. There is decoupled deformation patterns in crust and upper mantle beneath Lower Yangtze Craton and eastern Cathaysia Block, which may reflect relics of tectonic deformation patterns during geological evolution. [ABSTRACT FROM AUTHOR]
Copyright of Pure & Applied Geophysics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Since Mesozoic, the western subduction of Pacific and Philippine Sea plate beneath the Eurasian plates caused significant and complex tectonic deformation of Lower Yangtze Craton and its surroundings. However, the deformation patterns and geodynamic evolution of Lower Yangtze Craton and its surrounding areas remain enigmatic. In this work, we used P wave receiver functions with temporary and permanent seismic stations to detect the crustal structures and anisotropy in this region. Crustal thinning and high Vp/Vs ratios are detected in the Middle-Lower Yangtze metallogenic belt, which may be caused by the upwelling of upper mantle and intrusion of mantle-derived basaltic magma into the lower crust. The fast direction of crustal anisotropy in Hefei basin exhibits nearly east–west direction, which may be caused by the extension and thinning effect of underlying asthenospheric convection and flow. There is decoupled deformation patterns in crust and upper mantle beneath Lower Yangtze Craton and eastern Cathaysia Block, which may reflect relics of tectonic deformation patterns during geological evolution. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Pure & Applied Geophysics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00024-026-03958-5
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        Text: English
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      – SubjectFull: Anisotropy
        Type: general
      – SubjectFull: Cratons
        Type: general
      – SubjectFull: Seismic anisotropy
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      – SubjectFull: Lithosphere
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      – SubjectFull: Plate tectonics
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      – SubjectFull: Mantle plumes
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      – SubjectFull: Deformations (Mechanics)
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      – TitleFull: Crustal Structure and Anisotropy in Lower Yangtze Craton and its Implications for Geodynamic Evolution.
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              M: 05
              Text: May2026
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              Y: 2026
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