Provenance of the siliciclastic rocks in the Lower Yangtze region: Implications for Paleozoic tectonic switching of the northeastern South China Block

Kan, Tianxiang; Li, Longming; Chen, Mo; Liu, Huan; Zhao, Xilin; Ren, Jun; Han, Xu

doi:10.1016/j.jseaes.2022.105145

Cited by 5 publications

(2 citation statements)

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“…Consequently, we suggest the Late Palaeozoic siliciclastic rocks in the Lower Yangtze area to be a more plausible source for 1.7–1.9 Ga zircon population. Detrital zircons from the Permian Longtan Formation in Lower Yangtze area (SCB) exhibit a prominent 1.8 Ga zircon and monazite peak (Kan et al., 2022; Li et al., 2017; Shi et al., 2021; Figure 11), similar to that in the Lower Jurassic strata in this study. Additionally, the Permian strata in the SCB contain abundant chert layers (Kan et al., 2022), which is supported by the abundant chert clasts observed (Figure 4a–f).…”

Section: Discussionsupporting

confidence: 66%

“…Detrital zircons from the Permian Longtan Formation in Lower Yangtze area (SCB) exhibit a prominent 1.8 Ga zircon and monazite peak (Kan et al., 2022; Li et al., 2017; Shi et al., 2021; Figure 11), similar to that in the Lower Jurassic strata in this study. Additionally, the Permian strata in the SCB contain abundant chert layers (Kan et al., 2022), which is supported by the abundant chert clasts observed (Figure 4a–f). Recycling is furthermore supported by the high ZTR indices (mean value of 95% for the three samples; Table S1).…”

Section: Discussionsupporting

confidence: 66%

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Early Jurassic initiation of the modern drainage pattern of the Dabie orogen (East China) revealed by a multi‐proxy provenance approach

Deng,

Hu,

Chew

et al. 2023

Basin Research

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The timing of the initiation of the present‐day tectonic architecture and drainage systems in eastern China remains debated. This study presents a comprehensive provenance study of the Early Jurassic peripheral basins surrounding the Dabie orogen including framework petrography, heavy‐mineral analysis, single‐grain chronology and chemistry. Clasts of high‐grade schist, muscovite grains, rare gneissic fragments, abundant metamorphic garnet and phengite (Si > 3.3 pfu), combined with a main 216–256 Ma rutile U–Pb population found in these Early Jurassic sandstones, indicate a source from the Triassic (U)HP belt in the Dabie orogen. Sedimentary lithics and ultra‐stable heavy‐mineral assemblages indicate an additional source of recycled sedimentary rocks. Combined with the continuous shift of the youngest detrital rutile age population toward younger ages toward the north that mimics the pattern of metamorphic bedrock ages in the Dabie orogen, we infer that the present surface tectonic architecture and paleodrainage patterns of the Dabie orogen were established in the Early Jurassic. Thus, the Early Jurassic exhumation of the Dabie orogen marked the development of the watershed between Northern and Southern China, namely the Huai River and several principal tributary systems of the middle‐lower Yangtze River.

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