Late Permian–Triassic siliciclastic provenance, palaeogeography, and crustal growth of the Songpan terrane, eastern Tibetan Plateau: evidence from U–Pb ages, trace elements, and Hf isotopes of detrital zircons

Zhang, Yuxiu; Zeng, Longfei; Li, Zhiwu; Wang, Chengshan; Zhang, Kaijun; Yang, Weiru; Guo, Tonglou

doi:10.1080/00206814.2014.999356

Cited by 22 publications

(16 citation statements)

References 98 publications

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“…A conclusion that Upper Triassic sediments in the Sichuan Basin were mainly sourced from the Qinling orogeny and the Longmen Shan thrust belt is consistent with previous studies (Figure b) (Chen, ; Deng et al., ; Luo et al., ; Shao et al., ; Zhang, Ding, Pullen, & Kapp, ; Zhang, Jia et al., ; Zhang, Zeng et al., ; Zhu et al., ). The sediment routing system is mostly eastward and south‐eastward, as indicated by the paleocurrent data (Figure ).…”

Section: Discussionsupporting

confidence: 89%

“…Similar age spectra are seen in the Triassic turbidites of the eastern Songpan‐Ganze terrane (Ding et al., ; Enkelmann et al., ; Wang, Wang et al., ; Weislogel et al., , ; Zhang, Tang, Zhang, Zeng, & Gao, ; Zhang, Zeng et al., ) that may have shared similar sources as the Sichuan Basin. Alternatively, the eastern Songpan‐Ganze terrane may have experienced a phase of shortening in response to the Late Triassic intracontinental orogeny along the Longmen Shan thrust belt (Li, Allen et al., ; Yan et al., ; Zheng et al., ).…”

Section: Discussionmentioning

confidence: 61%

“…(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 therein) and sedimentary rocks (black solid line) ...…”

Section: Discussionmentioning

confidence: 99%

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

Yan

Tian

et al. 2018

Basin Research

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The Sichuan Basin and the Songpan‐Ganze terrane, separated by the Longmen Shan fold‐and‐thrust belt (the eastern margin of the Tibetan Plateau), are two main Triassic depositional centres, south of the Qinling‐Dabie orogen. During the Middle–Late Triassic closure of the Paleo‐Tethys Ocean, the Sichuan Basin region, located at the western margin of the Yangtze Block, transitioned from a passive continental margin into a foreland basin. In the meantime, the Songpan‐Granze terrane evolved from a marine turbidite basin into a fold‐and‐thrust belt. To understand if and how the regional sediment routing system adjusted to these tectonic changes, we monitored sediment provenance primarily by using detrital zircon U‐Pb analyses of representative stratigraphic samples from the south‐western edge of the Sichuan Basin. Integration of the results with paleocurrent, sandstone petrology and published detrital zircon data from other parts of the basin identified a marked change in provenance. Early–Middle Triassic samples were dominated by Neoproterozoic (~700–900 Ma) zircons sourced mainly from the northern Kangdian basement, whereas Late Triassic sandstones that contain a more diverse range of zircon ages sourced from the Qinling, Longmen Shan and Songpan‐Ganze terrane. This change reflects a major drainage adjustment in response to the Late Triassic closure of the Paleo‐Tethys Ocean and significant shortening in the Longmen Shan thrust belt and the eastern Songpan‐Ganze terrane. Furthermore, by Late Triassic time, the uplifted northern Kangdian basement had subsided. Considering the eastward paleocurrent and depocenter geometry of the Upper Triassic deposits, subsidence of the northern Kangdian basement probably resulted from eastward shortening and loading of the Songpan‐Ganze terrane over the western margin of the Yangtze Block in response to the Late Triassic collision among Yangtze Block, Yidun arc and Qiangtang terrane along the Ganze‐Litang and Jinshajiang sutures.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

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

Yan

Tian

et al. 2018

Basin Research

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“…Girardeau et al 1984Girardeau et al , 1985Pearce and Deng 1988). Although the CL images of half-measured zircons ( Figure 8) and younger SHRIMP U-Pb ages from both types of eclogites show that the zircons have partially been affected by later metamorphic recrystallization (Wu and Zheng 2004;Flowers et al 2010;Zhang et al 2015), the above-mentioned zircon SHRIMP U-Pb ages of 260.3 ± 4.8 Ma and 242.4 ± 3.8 Ma probably show the protolith ages of MORB-type and OIB-type ocean crust. Clearly, our UPb zircon dating of Type 1 eclogites (260.3 ± 4.8 Ma) indicates that the Bangong Meso-Tethys must have been present at least since the Late Permian (Supplementary Table 3; Figures 8a, 9a-b,13a-b), because this age typically marks the eruption time of the eclogite protolith considering the far higher closure temperature of the zircon U-Pb isotope systematics (900-1000°C; e.g.…”

Section: History and Evolution Of The Bangong Meso-tethysmentioning

confidence: 81%

Newly discovered eclogites from the Bangong Meso–Tethyan suture zone (Gaize, central Tibet, western China): mineralogy, geochemistry, geochronology, and tectonic implications

Zhang

Zhu

et al. 2015

International Geology Review

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2015): Newly discovered eclogites from the Bangong Meso-Tethyan suture zone (Gaize, central Tibet, western China): mineralogy, geochemistry, geochronology, and tectonic implications, International Geology Review To link to this article: http://dx. ABSTRACT We report the occurrence, mineralogy, whole-rock geochemistry, and geochronology of two types of eclogites newly discovered in the western Bangong Meso-Tethyan suture zone (Gaize, central Tibet, western China). Type 1 eclogites contain a peak metamorphic mineral assemblage of garnet + clinopyroxene whereas Type 2 ones are characterized by a peak metamorphic mineral assemblage of garnet + clinopyroxene + rutile. Type 2 clinopyroxene and garnet are relatively more enriched in Mg contents than Type 1 ones. Type 2 eclogites are significantly more enriched in TiO 2 , P 2 O 5 , and light rare-earth elements, but more depleted in Al 2 O 3 contents and Mg numbers. P-T estimates for both types of eclogites are consistent with minimum pressures of 23-25 kbar at 830-920°C, with the retrograde amphibolite facies assemblage of 15.2-17.5 kbar and 500-732°C. Zircon U-Pb dating indicates that the protolith of Type 1 eclogites, with normal mid-ocean ridge basalt affinity, emplaced at~260 Ma, whereas the protolith of Type 2 eclogites, geochemically familiar with oceanic-island basalt (OIB), erupted at~242 Ma. 40 Ar/ 39 Ar analyses of hornblende from the retrograded eclogites indicate that the Gaize eclogite-bearing high-pressure rocks were exhumed at~194 Ma. The occurrence of these high-pressure rocks implies the subduction of oceanic crust to a depth of~85 km along the southern margin of the Qiangtang block during the Late Triassic. ARTICLE HISTORY

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“…As shown in Figure 10c, the detrital zircons data for the Silurian-Devonian sediments show a prominent age group of 500-1000 Ma, with three peaks at~500 Ma,~800 Ma, and~950 Ma (Duan et al 2011;Chen et al 2015). The Songpan-Ganzi complex contains a thick succession (several kilometres) of deformed Middle-Upper Triassic flysch, which has been studied using U-Pb and Lu-Hf isotope analyses (Bruguier et al 1997;Weislogel et al 2006;, Zhang et al 2015. The data show three prominent peaks centred at~1.86 Ga with almost negative ε Hf (t) values,~440 Ma, and~265 Ma, and two minor peaks at~740 and~2452 Ma (Figure 10d, 6d).…”

Section: Longmen Shan Thrust-fold Belt and Songpan-ganzi Complexmentioning

confidence: 98%

Provenance of detrital zircons in the Late Triassic Sichuan foreland basin: constraints on the evolution of the Qinling Orogen and Longmen Shan thrust-fold belt in central China

Zhang

Jia

Shen

et al. 2015

International Geology Review

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In this article, we present in situ U-Pb and Lu-Hf isotope data for Upper Triassic detritus in the Sichuan region of northwestern South China, which was a foreland basin during the Late Triassic. The aim is to determine the provenance of sediments in the foreland basin and to constrain the evolution of the surrounding mountain belts. U-Pb age data for the Late Triassic detrital zircons generally show populations at 2.4-2.6 Ga, 1.7-1.9 Ga, 710-860 Ma, 410-460 Ma, and 210-300 Ma. By fitting the zircon data into the tectonic, sedimentologic, and palaeographic framework, we propose that the north Yangtze Block and South Qinling-Dabie Orogen were the important source areas of sediments in the northern part of the foreland basin, whereas the Longmen Shan thrust-fold belt was the main source region for detritus in other parts of the foreland basin. The South Qinling-Dabie Orogen could also have served as a physical barrier to block most detritus shed from the southern North China Block into the foreland basin during the sedimentation of the Xujiahe Formation. Our results also reveal that part of the flysch from the eastern margin of the Songpan-Ganzi region had been displaced into the Longmen Shan thrust-fold belt before the deposition of the foreland basin sediments. In addition, the Lu-Hf data indicate that Phanerozoic igneous rocks in central China show insignificant formation of the juvenile crust.

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Late Permian–Triassic siliciclastic provenance, palaeogeography, and crustal growth of the Songpan terrane, eastern Tibetan Plateau: evidence from U–Pb ages, trace elements, and Hf isotopes of detrital zircons

Cited by 22 publications

References 98 publications

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

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

Newly discovered eclogites from the Bangong Meso–Tethyan suture zone (Gaize, central Tibet, western China): mineralogy, geochemistry, geochronology, and tectonic implications

Provenance of detrital zircons in the Late Triassic Sichuan foreland basin: constraints on the evolution of the Qinling Orogen and Longmen Shan thrust-fold belt in central China

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