Linked sequence stratigraphy and tectonics in the Sichuan continental foreland basin, Upper Triassic Xujiahe Formation, southwest China

Li, Yingjiao; Shao, Longyi; Eriksson, Kenneth A.; Tong, Xin; Gao, Cai; Chen, Zhongshu

doi:10.1016/j.jseaes.2014.02.025

Cited by 55 publications

(39 citation statements)

References 72 publications

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“…3). The Xujiahe Formation contains sandstone, shale, interbedded coal, and conglomerate that is most common in the northern Sichuan basin; and it was deposited within the foreland basin with a maximum thickness of over 3 km nearby the Longmen Shan belt (Li et al, 2003a(Li et al, , 2014. Toward the basin interior, sediments change from the coarse-grained (e.g., alluvial conglomerate bodies) to fine-grained (lacustrine deposits).…”

Section: Samplingmentioning

confidence: 99%

“…This is supported by identification of complete sedimentary structures of alluvial fan in the Xujiahe Formation in the north margin of the Sichuan foreland basin, which is composed of coarse-grained, poorly sorted gravel in the proximal area, and relatively fine-grained sandstone and siltstone in more distal area (e.g., Gao, 2007;Wu et al, 1994). The Qm-F-L provenance triangular diagram (Dickinson et al, 1983) displays that lots of sandstone samples plot in the transitional continental and recycled orogen fields (Li et al, 2014), implying that the sediments in the northern Sichuan basin mainly originated from orogens to the north and northeast of the basin. In the western Sichuan basin, however, paleocurrents in the Xujiahe Formation display to the east, south and southeast, suggesting that sediments here were mainly inputted from the northwest region (Chen, 2011;Li et al, 1995;Xie et al, 2006;Yang et al, 2013).…”

Section: Provenance Of the Sedimentary Rocksmentioning

confidence: 99%

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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

Shao

Cheng

Song

2016

Journal of Asian Earth Sciences

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Section: Samplingmentioning

confidence: 99%

Section: Provenance Of the Sedimentary Rocksmentioning

confidence: 99%

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

Shao

Cheng

Song

2016

Journal of Asian Earth Sciences

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“…These alluvial fan deposits indicate the regions to the north as source regions for the northern part of the Sichuan foreland basin. The ternary diagrams of sandstone components for thousands of Xujiahe Formation samples suggested the settlement of the sediment source as recycled orogen (Dickinson and Suczek 1979;Li 2003;Liu et al 2012;Li et al 2014b; Figure 3a). All these data indicate that the source regions of the sediments in the northern Sichuan basin were orogens located to the north and east of the basin.…”

mentioning

confidence: 99%

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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“…Sequence stratigraphy has been widely used in nonmarine successions to conduct basin analysis and coal accumulation (e.g., Bohacs and Suter, 1997;Diessel et al, 2000Diessel et al, , 2007Li et al, 2000Li et al, , 2014Holz et al, 2002;Shao et al, 2009;Lu et al, 2012a, b). Sequence stratigraphic architecture is controlled by the magnitude of accommodation space and by the rate at which that space is created or destroyed (Shanley and McCabe, 1994;Catuneanu, 2006).…”

Section: Base-level Changes Accommodation and Coal Accumulationmentioning

confidence: 99%

Sequence stratigraphy and paleogeography of the Middle Jurassic coal measures in the Yuqia coalfield, northern Qaidam Basin, northwestern China

Li¹,

Shao²,

Lu³

et al. 2014

Bulletin

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Detailed stratigraphic and paleogeographic analyses of data from 72 boreholes for the Middle Jurassic intermontane fluvial-lacustrine coal-bearing sequences were conducted in the Yuqia coalfield of the northern Qaidam Basin, northwestern China. Three third-order sequences lasting in total ca. 10.6 m.y., and an internal lowstand systems tract (LST), transgressive systems tract (TST), highstand systems tract (HST), and falling-stage systems tract (FSST) have been identified. A series of sequence-specific paleogeographic maps have been constructed based on the contours of lithological parameters. The paleogeographic units include alluvial fan-braided (meandering) fluvial plain, upper delta plain, lower delta plain, subaqueous delta, shore-shallow lake, and deep lake. The preferred sites of coal accumulation are interdelta bays, upper delta plains, lower delta plains, and fluvial back swamps. The sequence stratigraphic and sedimentological analysis of the Middle Jurassic coal-bearing measures of the Yuqia coalfield provides a basis for a comprehensive coal accumulation model that involves a six-period evolution from the LST, early TST, late TST, early HST, late HST to FSST. The major coal seams were accumulated in the early and late TST of the sequences S1 and S2. These results are of practical significance for coal resources exploration and enhance

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Linked sequence stratigraphy and tectonics in the Sichuan continental foreland basin, Upper Triassic Xujiahe Formation, southwest China

Cited by 55 publications

References 72 publications

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

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

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

Sequence stratigraphy and paleogeography of the Middle Jurassic coal measures in the Yuqia coalfield, northern Qaidam Basin, northwestern China

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