Wedge tectonics in South China: constraints from new seismic data

Li, Tingzi; Jiang, Mingming; Zhao, Liang; Yao, Weihua; Chen, Ling; Chu, Yang; Sun, Bin; Ai, Yinshuang; Wan, Bo; Gessner, Klaus; Yuan, Huaiyu

doi:10.1016/j.scib.2022.05.007

Cited by 7 publications

(47 citation statements)

References 56 publications

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“…The lateral variation in the top depth of the UMLVZs reflects uneven asthenospheric upwelling in the eastern region. In contrast, to the west of the NSGL (area A in Figure 19b), the top depth (∼70 km) of the UMLVZs is much shallower than the LAB depth (>150 km) revealed by previous studies (e.g., An & Shi, 2006;T. Li et al, 2022;Shan et al, 2017Shan et al, , 2021.…”

Section: Discussioncontrasting

confidence: 56%

“… (a) Regional tectonics in the study area (after Charvet, 2013; Deng et al., 2014; H. Li et al., 2018; T. Li et al., 2022). The thick solid black lines indicate the boundaries of the main tectonic units, and the thin solid lines indicate the boundaries between provinces.…”

Section: Introductionmentioning

confidence: 99%

“…(a) Regional tectonics in the study area (after Charvet, 2013;Deng et al, 2014;H. Li et al, 2018;T. Li et al, 2022).…”

mentioning

confidence: 99%

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Continental Reworking in the Eastern South China Block and Its Adjacent Areas Revealed by F‐J Multimodal Ambient Noise Tomography

Chen

Pan

et al. 2022

JGR Solid Earth

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The South China Block (SCB), which is located in the southeastern part of the Eurasian plate, is generally believed to have developed during the early Neoproterozoic era due to the amalgamation of the Cathaysia Block to the southeast and the Yangtze Craton to the northwest (Figure 1a, Y. Wang et al., 2013). In the Triassic, the SCB collided with the North China Craton (NCC), generating the well-known high and ultrahigh-pressure (HP and UHP) metamorphic belts that constitute the Qinling-Dabie orogen (

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Section: Discussioncontrasting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

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Continental Reworking in the Eastern South China Block and Its Adjacent Areas Revealed by F‐J Multimodal Ambient Noise Tomography

Chen

Pan

et al. 2022

JGR Solid Earth

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“…In Li et al. (2022) and this study, both Rayleigh and Love phase velocity dispersion curves were obtained through the Automatic Frequency‐Time Analysis method (AFTAN; Bensen et al., 2007; Levshin et al., 1972). The AFTAN code uses a reference phase velocity model (here based on predictions from the 1D PREM model) to determine the correct phase velocity branch.…”

Section: Love Wave Data and Transdimensional Inversionsmentioning

confidence: 99%

“…We picked 2–36 s Love wave dispersion curves due to smaller SNRs, in contrast with the 5–60s range of the Rayleigh wave dispersion in Li et al. (2022). Figure 3 summarizes the Rayleigh and Love wave datasets.…”

Section: Love Wave Data and Transdimensional Inversionsmentioning

confidence: 99%

Continental Fragments in the South China Block: Constraints From Crustal Radial Anisotropy

Li,

Jiang,

Zhao

et al. 2023

JGR Solid Earth

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The lithospheric architecture of the South China Block (SCB) is crucial to understanding the formation and evolution of this distinctive and highly reworked continental lithosphere with over 3 billion years of tectonic history. However, due to a lack of high‐resolution geophysical datasets, a detailed picture of the SCB lithosphere is absent, and fundamental questions regarding its formation, assembly, and subsequent reworking processes are actively debated. Assuming that unique deformation patterns due to such tectonic processes can be mapped by seismic anisotropy, we present a new crustal radially anisotropic shear‐wave velocity model along a 1500‐km seismic transect that spans the major tectonic domains of the SCB to characterize the past deformation processes. The new seismic models show significant lateral variations in seismic anisotropy and velocity, suggesting that the SCB consists of several separated (micro)continental blocks or terranes that likely have different origins and have survived the prolonged deformation history since the early formation of these continental fragments. Combining available geophysical datasets, we link individual crustal domains of distinct anisotropy to constrain the multiphase deformation processes of the SCB, including the early formation of the Proto‐Yangtze and Cathaysia Blocks, the assembly of the SCB, and the subsequent reactivation of the interior and extensive deformation that have formed the Basin‐and‐Range style tectonics in the Cathaysia Block. We suggest that relict continental fragments have played critical roles in the formation and reactivation of the SCB lithosphere.

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Prolonged Mesozoic intracontinental gold mineralization in the South China Block controlled by lithosphere architecture and evolving Paleo-Pacific Plate subduction

Zeng

Wang

Groves

et al. 2023

Earth-Science Reviews

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Wedge tectonics in South China: constraints from new seismic data

Cited by 7 publications

References 56 publications

Continental Reworking in the Eastern South China Block and Its Adjacent Areas Revealed by F‐J Multimodal Ambient Noise Tomography

Continental Reworking in the Eastern South China Block and Its Adjacent Areas Revealed by F‐J Multimodal Ambient Noise Tomography

Continental Fragments in the South China Block: Constraints From Crustal Radial Anisotropy

Prolonged Mesozoic intracontinental gold mineralization in the South China Block controlled by lithosphere architecture and evolving Paleo-Pacific Plate subduction

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