Provenance and tectonic-paleogeographic evolution: Constraints from detrital zircon U–Pb ages of Late Triassic-Early Jurassic deposits in the northern Sichuan basin, central China

Late Triassic tectonic inversion in the upper Yangtze Block: Insights from detrital zircon U–Pb geochronology from south‐western Sichuan Basin

“…(). (c–e) Spectra of Upper Triassic sediments in the south‐western, western and northern Sichuan Basin, reported in previous studies (Chen, ; Deng et al., ; Luo et al., ; Shao et al., ; Weislogel et al., ; Zhang, Jia et al., ; Zhu et al., ). Spectra of potential areas, including (f) E‐SGT (eastern Songpan‐Ganze terrane), compiled from Lower‐Middle Triassic sedimentary rocks (black solid line) (Ding et al., ; Enkelmann et al., ; Wang, Wang et al., ; Weislogel et al., , ) and Upper Triassic sedimentary rocks (green dash line) (Ding et al., ; Wang, Li, & Bao, ; Wang, Wang et al., ; Weislogel et al., , ; Zhang et al., ; Zhang, Zeng et al., ), (g) N‐KDB (northern Kangdian Basement) compiled from both crystalline (red dash line) (Geng, Yang, Wang, & Liudong, ; Guo et al., ; Huang, Xu, Lan, Yang, & Luo, ; Li, Li, Zhou, Liu, & Kinny, ; Li, Zhou, Li, Liu, & Kinny, ; Li, Li et al., ; Lin, ; Lin, Li, & Li, ; Meng, Liu, Du, Liu, & Liu, ; Roger & Calassou, ; Ruan, ; Shen, Li, Xu, & Wang, ; Shen et al., ; Yan et al., ; Zhao, Chen, & Li, ; Zhou et al., ; Zhou, Ma et al., ) and sedimentary rocks (black solid line) (He et al., ; Sun et al., ; Zhou, Ma et al., ), (h) S‐KDB (southern Kangdian Basement), compiled from sedimentary rocks (Sun et al., ; Wang, Yu, Griffin, & O Reilly, ), (i) LMS (Longmen Shan thrust belt) compiled from Neoproterozoic crystalline (red dash line) (Fu et al., ; Meng et al., ; Zhou, Yan, Wang, Qi, & Kennedy, ), Palaeozoic sedimentary (black solid line) (Chen, Sun, Long, Zhao, & Yuan, ; Duan, Meng, Zhang, & Liu, ; Weislogel et al., ) and Neoproterozoic sedimentary rocks (green dash line) (Chen et al., ), (j) QL (Qinling orogen) compiled from both crystalline (red dash line) (Li et al., and references ...…”

“…As suggested by previous detrital zircon studies of the Sichuan Basin (Chen, ; Deng et al., ; Luo et al., ; Shao et al., ; Weislogel et al., ; Zhang, Jia et al., ; Zhu et al., ), potential source terrains for the Triassic strata include eastern Songpan‐Ganze terrane, northern and southern Kangdian, Longmen Shan thrust belt, Qinling orogen and south‐eastern Yangtze Block. To facilitate comparison, we compiled zircon U‐Pb ages of the prelate Triassic crystalline and clastic rocks exposed in these potential source areas (Figure ).…”

“…() and Shao et al. () also indicated the minor role of the north Yangtze Block in supplying sediments to the northern Sichuan Basin. Shao et al.…”

“…() and Shao et al. () suggest that the Longmen Shan thrust belt and the Songpan‐Ganze terrane in the west and the Qinling‐Dabie orogen in the north were the source of the Upper Triassic sediments in the western and northern Sichuan Basin respectively. Zhang, Jia et al.…”

“…Shao et al. () suggested that sediments of the western, southern and eastern parts of basin shared the same sources that include the Qinling orogen, southern North China Block, the eastern Songpan‐Ganze terrane and the Longmen Shan thrust belt. Zhu et al.…”