Sandstone memory of a Late Paleozoic continental arc in southeast China (Lower Yangtze region)

Li, Chao; Lü, Xuan; Hu, Xiaoxiang; Yu, Jianhua; Sun, GaoYuan

doi:10.1360/n972016-01356

Cited by 17 publications

(2 citation statements)

References 29 publications

(43 reference 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: 65%

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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Section: Discussionsupporting

confidence: 65%

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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“…However, two lines of evidence show that the underlying Permian Longtan Formation is an unlikely source: (a) The zircon U-Pb age spectra do not match. In addition to the Permian zircon peak (c. 269 Ma), the Permian Longtan Formation has a major peak age at c. 1.8 Ga, while the Triassic strata in this study have two major peaks age at 259-294 Ma and 430-440 Ma, with minimal Paleoproterozoic detritus; (b) The lithic clasts in the Longtan Formation sandstones are predominantly felsic volcanics (C. Li et al, 2017), while the Triassic sandstones in this study are dominated by metapelitic lithics. Moreover, the U-Pb detrital zircon record of coeval Triassic strata in the eastern coastal region which are derived from the Late Paleozoic continental arc are also different from the Triassic sedimentary basins surrounding the Dabie orogen (only two populations at c. 1.8 Ga and c. 0.2 Ga; Shen et al, 2021;Yao et al, 2012), while their petrographic composition (felsic volcanic lithics vs. metamorphic lithics and muscovite grains in this study) also differs greatly.…”

Section: Provenance Interpretationmentioning

confidence: 68%

Sedimentological Evidence for Pre‐Early Permian Continental Subduction in the Dabie Orogen, Central‐East China

Deng,

Hu,

Chew

et al. 2024

Tectonics

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How to constrain the onset of continental subduction and prograde metamorphism in an orogen remains a fundamental question. The widespread Triassic ultrahigh‐pressure (UHP) metamorphic rocks in the Dabie orogen in central‐east China are generally attributed to continental subduction. The earliest Triassic peripheral basins (the Huangshi, Yueshan and Nanjing basins) around the Dabie orogen represent an ideal archive to reconstruct the early evolution of the orogen. Here we present a multidisciplinary provenance study on these Triassic strata, including framework petrography and heavy mineral analyses combined with U‐Pb age and trace‐element analyses of detrital zircon, rutile and apatite. The abundant metapelitic lithics and muscovite grains, a heavy mineral population dominated by metamorphic apatite, and a significant Permian (270–290 Ma) age peak from U‐Pb age spectra of detrital zircon, rutile and apatite imply an Early Permian medium‐high grade metamorphic source in the uppermost structural levels of the Dabie orogen. Our provenance data indicate that the onset of northward continental subduction of the South China Block commenced no later than the Early Permian (c. 290 Ma). This event is clearly earlier and distinct from the more widespread Triassic UHP metamorphism of the Dabie orogen, suggesting that continental subduction and mountain‐basin interaction were protracted processes (>55 Myr, c. 290–235 Ma). When combined with other geological evidence, our results show that the prolonged continental subduction is not always preceded by subduction of oceanic crust.

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Provenance and Tectonic Implications of Paleozoic Strata in the South Yellow Sea Basin, China–Revealed from the Borehole CSDP-2

Gao

Zhang

Guo

et al. 2020

J. Ocean Univ. China

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Sandstone memory of a Late Paleozoic continental arc in southeast China (Lower Yangtze region)

Cited by 17 publications

References 29 publications

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

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

Sedimentological Evidence for Pre‐Early Permian Continental Subduction in the Dabie Orogen, Central‐East China

Provenance and Tectonic Implications of Paleozoic Strata in the South Yellow Sea Basin, China–Revealed from the Borehole CSDP-2

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