The pre-Devonian tectonic patterns and evolution of South China

Guo, Lang; Shi, Yaolin; Lu, Haijian; Ma, Ruixue; Huang, Dong; Yang, Shengchun

doi:10.1016/0743-9547(89)90012-3

Cited by 121 publications

(13 citation statements)

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“…Even though the Paleozoic tectonic evolution of south China was a fascinating topic, from our structural data of Yunkai massif point view, a detail discussion of the models of early Paleozoic tectonics is beyond the scope of this paper. However, postcollisional extension‐delamination‐underplating magmatism of the Wuyi‐Baiyun‐Yunkai‐Song Chay belt, which rose by the arc‐continent collision [ Lingzhi et al , 1989] or continent‐continent collision [ Charvet et al , 1996] during the early Paleozoic, is preferred here.…”

Section: Discussionmentioning

confidence: 99%

Phanerozoic tectonics of south China block: New insights from the polyphase deformation in the Yunkai massif

2008

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[1] The Yunkai massif is a key region to decipher the tectonic evolution of the south China block since the contained high-grade metamorphic rocks experienced a polyphase deformation. The earliest event (D 1 ) corresponds to a top-to-the-northwest ductile shearing, coeval with amphibolite facies metamorphism, probably developed during a postorogenic synmigmatization extensional event occurred in early Paleozoic time. The main ductile deformation (D 2 ) is top-to-the-northeast shearing, occurred in early Mesozoic time, coeval with amphibolite to greenschist facies metamorphism and associated with the development of northeast verging recumbent folds within the Neoproterozoic-Paleozoic sedimentary cover of the south China block. The tectonic significance of D 2 is possibly linked with the subduction of Indochina beneath south China along the Song Ma belt of North Vietnam. Another compressional event (D 3 ) of Late Jurassic to Cretaceous age is indicated by SE verging recumbent folds with NE-SW trending axes developed both in the sedimentary cover and gneissic basement. The northwestward subduction of the Pacific plate or the SE thrusting of the SongpanGanzi fold belt upon the Yangtze craton can be considered as the geodynamic causes of this late Mesozoic event. Last, NE -SW trending brittle sinistral strike-slip and normal faulting (D 4 ) control the massif uplifting and the subsiding of continental half grabens. This structure, which is widespread in the eastern margin of the Eurasia continent, can be related either to the westward subduction of the Paleo-Pacific plate or to lithosphere removal during the late Mesozoic.

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Section: Discussionmentioning

confidence: 99%

Phanerozoic tectonics of south China block: New insights from the polyphase deformation in the Yunkai massif

2008

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“…One way to test these models for the Neoproterozoic to early Paleozoic history of the South China Block is to examine the provenance of the detrital zircons in sandstone that accumulated in the basin between, or at the juncture of, the Yangtze and Cathaysia blocks during this period. In the model that postulates the development of the early Paleozoic Huanan Ocean (Figure 1b), the Chenzhou‐Linwu Fault (also named the Jiang‐Shao Fault in Chinese literature), which delineates the boundary between the Yangtze and Cathaysia blocks, would represent the suture along which the intervening early Paleozoic ocean was consumed (Figure 1b [ Shui , 1987; B. Xu and Qiao , 1989; Liu and Xu , 1994; Lingzhi et al , 1984, 1989; X. S. Xu et al , 1996; H. D. Chen et al , 2006; Mei et al , 2005; Ma et al , 2004]). The provenance of sandstone that accumulated in the early Paleozoic prior to ocean closure from either side of the Chenzhou‐Linwu Fault area should be different due to the contrasting basement ages of the Yangtze and Cathaysia blocks.…”

Section: Introductionmentioning

confidence: 99%

Tectonic setting of the South China Block in the early Paleozoic: Resolving intracontinental and ocean closure models from detrital zircon U-Pb geochronology

et al. 2010

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Zircon U‐Pb geochronological data on over 900 zircon grains for Cambrian to Silurian sandstone samples from the South China Block constrain the pre‐Devonian tectonic setting of, and the interrelationships between, the constituent Cathaysia and Yangtze blocks. Zircons range in age from 3335 to 465 Ma. Analyses from the Cathaysia sandstone samples yield major age clusters at ∼2560, ∼1850, ∼1000, and 890–760 Ma. Zircons from the eastern and central Yangtze sandstone samples show a similar age distribution with clusters at ∼2550, ∼1860, ∼1100, and ∼860–780 Ma. A minor peak at around 1450 Ma is also observed in the Cathaysia and central Yangtze age spectra, and a peak at ∼490 Ma represents magmatic zircons from Middle Ordovician sandstone in the eastern Yangtze and Cathaysia blocks. The Cambrian and Ordovician strata show a transition from a carbonate‐dominated succession in the central Yangtze Block, to an interstratified carbonate‐siliciclastic succession in the eastern Yangtze Block, to a neritic siliciclastic succession in the Cathaysia Block. Paleocurrent data across this succession consistently indicate directions toward the W‐NNW, from the Cathaysia Block to the Yangtze Block. Our data, together with other geological constraints, suggest that the Cathaysia Block constitutes a fragment on the northern margin of east Gondwana and both Cathaysia and east Gondwana constituted the source for the analyzed early Paleozoic samples. The similar age spectra for the Cambrian to Silurian sandstone samples from the Yangtze and Cathaysia blocks argue against the independent development and spatial separation of these blocks in the early Paleozoic but rather suggest that the sandstone units accumulated in an intracontinental basin that spanned both blocks. Subsequent basin inversion and Kwangsian orogenesis possibly at 400–430 Ma also occurred in an intracontinental setting probably in response to the interaction of the South China Block with the Australian‐Indian margin of east Gondwana.

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“…1 and 2). The region occupies a key tectonic position near the Jiangshan-Shaoxing suture zone of the Yangtze and Cathaysian blocks, which is the boundary between Tethyan and Pacifi c domains (Lingzhi et al, 1989;Jiliang, 1993;Chen et al, 1999;Ho et al, 2003). Precambrian to late Mesozoic rocks in this region (BGMRZ, 1989) are far from the major late Mesozoic to Cenozoic strike-slip faults to the southwest (e.g., Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Hsü et al (1988) presented an early Mesozoic, Alpinetype, collisional orogenic model for the general structure of South China, but they provided no detailed, supportive sedimentary and structural evidence. Rowley et al (1989), Chen (1999), and Li et al (1997) criticized the early Mesozoic collisional model, Lingzhi et al (1989) proposed an alternative early Paleozoic orogenic model, and Goodell et al (1991) and Pirajno and Bagas (2002) attributed the Mesozoic structures and tectonism in South China to the subduction of the Pacifi c Plate to the southeast. Chen (1999) made a detailed structural study of a similar early Mesozoic orogen in Fujian Province, which is located SE of the NW Zhejiang region.…”

Section: Introductionmentioning

confidence: 99%

Early Mesozoic thrust tectonics of the northwest Zhejiang region (Southeast China)

Xiao

2005

Geol Soc America Bull

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The NW Zhejiang region of South China occupies a key tectonic position near the suture zone of the Yangtze and Cathaysian blocks and is of critical importance for the assembly of East Asia. Sedimentological and tectonic analyses indicate that the region had a SE-dipping paleoslope in the late Paleozoic to Early Triassic. A transitional sedimentary environment from deep sea to continental molasse is documented in the early Triassiclate Triassic interval. Associated structures are NW-vergent folds and thrusts that root southeastward beneath the high-grade Chencai metamorphic complex. The structural styles of this foreland fold-and-thrust belt are characterized by multifold duplexes and individual folds that are together zoned from SE to NW as follows: (1) core zone characterized by shear folds and ductile thrusts; (2) SE belt with out-of-sequence thrusting of multifold duplexes and an average shortening of 50%; (3) central belt with duplexes, imbricate fans, and an average shortening of 40%; and (4) NW belt with Jura-type folds and a shortening of ~10%. A tectonic model for the foreland fold-and-thrust belt is discussed in relation to the early Mesozoic archipelago paleogeography of South China.

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The pre-Devonian tectonic patterns and evolution of South China

Cited by 121 publications

References 4 publications

Phanerozoic tectonics of south China block: New insights from the polyphase deformation in the Yunkai massif

Phanerozoic tectonics of south China block: New insights from the polyphase deformation in the Yunkai massif

Tectonic setting of the South China Block in the early Paleozoic: Resolving intracontinental and ocean closure models from detrital zircon U-Pb geochronology

Early Mesozoic thrust tectonics of the northwest Zhejiang region (Southeast China)

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