Jiangnan Orogen, South China: A ~970–820 Ma Rodinia margin accretionary belt

Yao, Jinlong; Cawood, Peter A.; Zhao, Guochun

doi:10.1016/j.earscirev.2019.05.016

Cited by 218 publications

(81 citation statements)

References 180 publications

(332 reference statements)

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“…The ca. 820-710 Ma sedimentation and bimodal magmatism due to the Nanhua rifting across South China [66][67][68] also matches well with the rifting-related records of the southeastern Tarim craton (see the above section). A connection between the northern Tarim craton and the northern and western Yangtze block is indicated by the same prominent age spectrum at ca.…”

Section: -750supporting

confidence: 78%

“…South China was assembled by the connection of the Yangtze and Cathaysia blocks at ca. 820-800 Ma [68] and occupied a position adjacent to North India and western Australia with respect to Rodinia (Figure 7), based on comprehensive geologic, geochemical, geochronological, paleomagnetic, and faunal data [73]. We further suggest a location of the Tarim craton between South China and North India (Figure 7), according to the following lines of evidence.…”

Section: -750mentioning

confidence: 60%

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Detrital Zircon U-Pb-Hf Isotopes of Middle Neoproterozoic Sedimentary Rocks in the Altyn Tagh Orogen, Southeastern Tarim: Insights for a Tarim-South China-North India Connection in the Periphery of Rodinia

Liu

Zhao

et al. 2020

Lithosphere

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The location of the Tarim craton during the assembly and breakup of the Rodinia supercontinent remains enigmatic, with some models advocating a Tarim-Australia connection and others a location at the heart of the unified Rodinia supercontinent between Australia and Laurentia. In this study, our new zircon U-Pb dating results suggest that middle Neoproterozoic sedimentary rocks in the Altyn Tagh orogen of the southeastern Tarim craton were deposited between ca. 880 and 760 Ma in a rifting-related setting slightly prior to the breakup of Rodinia at ca. 750 Ma. A compilation of existing Neoproterozoic geological records also indicates that the Altyn Tagh orogen of the southeastern Tarim craton underwent collision at ca. 1.0-0.9 Ga and rifting at ca. 850-600 Ma related to the assembly and breakup of Rodinia. Furthermore, in order to establish the paleoposition of the Tarim craton with respect to Rodinia, available detrital zircon U-Pb ages and Hf isotopes from Meso- to Neoproterozoic sedimentary rocks were compiled. Comparable detrital zircon ages (at ca. 0.9, 1.3-1.1, and 1.7 Ga) and Hf isotopes indicate a close linkage among rocks of the southeastern Tarim craton, Cathaysia, and North India but exclude a northern or western Australian affinity. In addition, detrital zircons from the northern Tarim craton exhibit a prominent age peak at ca. 830 Ma with minor spectra at ca. 1.9 and 2.5 Ga but lack Mesoproterozoic ages, comparable to the northern and western Yangtze block. Together with comparable geological responses to the assembly and breakup of the Rodinia supercontinent, we offer a new perspective of the location of the Tarim craton between South China and North India in the periphery of Rodinia.

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Section: -750supporting

confidence: 78%

Section: -750mentioning

confidence: 60%

Detrital Zircon U-Pb-Hf Isotopes of Middle Neoproterozoic Sedimentary Rocks in the Altyn Tagh Orogen, Southeastern Tarim: Insights for a Tarim-South China-North India Connection in the Periphery of Rodinia

Liu

Zhao

et al. 2020

Lithosphere

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“…The Jiangnan Orogen along the southeastern margin of the Yangtze Block is featured by Neoproterozoic arc/backarc basin assemblages. It has been divided into the Mesoproterozoic to Neoproterozoic composite Huaiyu terrane and the Neoproterozoic Jiuling and Southwest terranes (Yao et al, 2019;Lin et al, 2018). Shortly after the amalgamation of these terranes in the Neoproterozoic, the Jiangnan Orogen underwent regional extension, resulting in the development of the Neoproterozoic Nanhua Rift Basin (Li et al, 2003;Wang and Li, 2003;Shu, 2011).…”

Section: Introductionmentioning

confidence: 99%

An Early Paleozoic Tectonic Mélange at the Western Margin of West Cathaysia: Constraints from Organic‐walled Microfossils

Wang

Zhang

et al. 2020

Acta Geologica Sinica (Eng)

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The Jiangshan‐Shaoxing‐Pingxiang Fault (JSP Fault) is traditionally considered as the boundary between the Yangtze and Cathaysia blocks in South China. Whether the previously defined Shenshan and Kuli formations located along the JSP fault and near the Xinyu City, Jiangxi Province, are continuous strata or parts of a tectonic mélange is important for understanding the geological history of South China. A carbonaceous phyllite from the area, previously considered as part of the Neoproterozoic Shenshan and Kuli formations, is analyzed palynologically in this study. The Asteridium‐Comasphaeridium acritarch assemblage found in the slate can be correlated with the basal Cambrian Asteridium‐Heliosphaeridium‐Comasphaeridium (AHC) acritarch assemblage in Tarim and the Yangtze Block. The early Cambrian biostratigraphical age assignment for the carbonaceous phyllite indicates the presence of both Neoproterozoic and Cambrian rocks in the sedimentary package, and supports that the package is a part of tectonic mélange rather than a continuous Neoproterozoic strata. The Cambrian slate is the youngest known lithology in the mélange at present.

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“…geological studies during the past decades (e.g., Zhao and Cawood, 2012;Zhang and Zheng, 2013;Li Z X et al, 2014). Yet lots of efforts were made to characterize its Neoproterozoic tectonics (e.g., Li et al, 2012;Wang et al, 2017;Xia et al, 2018;Zhao et al, 2018;Yao et al, 2019) and less attention has been paid to the earlier crustal history (e.g., Cawood et al, 2020;Wang et al, 2020 and references therein). The Yangtze Block and the Cathaysia Block, the two constituent Precambrian blocks of South China, feature a prolonged Archean to Mesoproterozoic history of continental growth and subsequent modification that built the ancient crust (e.g., Li et al, 1995;Charvet et al, 1996;Zhao and Cawood, 2012) (Fig.…”

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confidence: 99%

Nature and Evolution of Pre‐Neoproterozoic Continental Crust in South China: A Review and Tectonic Implications

Kai

Dong

Yao

et al. 2020

Acta Geologica Sinica (Eng)

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South China as an amalgamation of the Yangtze and Cathaysia blocks is composed of Archean to Mesoproterozoic basement overlain by Neoproterozoic and younger cover. Both the constituent Yangtze and Cathaysia blocks contain well‐preserved Neoproterozoic rocks that have been extensively studied in terms of the age and tectonic nature, but less is known about their earlier crustal history due to the incomplete rock record. Recent efforts in investigating the yet survived crustal nature based on isotopic and elemental signatures preserved in igneous and sedimentary rocks have steadily improved our knowledge about the pre‐Neoproterozoic continental crustal evolution in South China. In this paper, we summarize the up‐to‐date pre‐Neoproterozoic records, including petrological, geochronological, geochemical and geophysical data, across South China, and discuss its spatiotemporal patterns of the pre‐Neoproterozoic crust and the relevant tectonic events. While the xenocrystic/inherited and detrital zircon records suggest widespread Archean (mainly ca. 2.5 Ga) crustal components within both the Yangtze and Cathaysia blocks, exposed Archean rocks are only limited to isolated crustal provinces in the Yangtze Block. These Archean rocks are dominated by TTGs (tonalite‐trondhjemite‐granodiorite) with varied ages (3.3–2.5 Ga) and zircon Hf isotopes, indicating a compositionally heterogeneous nature of the Archean Yangtze Block and, by inference, the development of multiple ancient terranes. The early Paleoproterozoic (2.4–2.2 Ga) tectonomagmatic events characterize the western Yangtze Block and are supportive of an east‐west subdivision of the Yangtze basement, whereas the late Paleoproterozoic (2.1–1.7 Ga) orogeneses may have affected a larger area covering both the western and eastern parts of the Yangtze Block, and also the Cathaysia Block. The eastern Yangtze Block with generally northeastward‐younging late Paleoproterozoic magmatism and metamorphism likely experienced a prolonged 2.05–1.75 Ga orogenic process welding the various Archean proto‐continents, consistent with the documentation of a buried late Paleoproterozoic orogenic belt imaged by deep seismic profiling from its central part and of a slightly older ophiolitic mélange in the northern part. The Cathaysia Block was probably involved in a short‐lived 1.9–1.8 Ga orogenic event. The two orogeneses overlapped in time and may have contributed to the cratonization of a possible unified South China, and are referred to be linked with the assembly of the Nuna Supercontinent. The subsequent late Paleoproterozoic to early Mesoproterozoic rift successions and intrusions (1.7–1.5 Ga) in the southwestern Yangtze Block, and the ca. 1.43 Ga rifting in Hainan Island of the Cathaysia Block could be responses to the Nuna break‐up. Late Mesoproterozoic (1.2–1.0 Ga) magmatism of varied age and nature in different localities of the Yangtze Block is reflective of a complex tectonic process in the context of the assembly of the Rodinia Supercontinent. Similar‐aged metamorphism (...

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Jiangnan Orogen, South China: A ~970–820 Ma Rodinia margin accretionary belt

Cited by 218 publications

References 180 publications

Detrital Zircon U-Pb-Hf Isotopes of Middle Neoproterozoic Sedimentary Rocks in the Altyn Tagh Orogen, Southeastern Tarim: Insights for a Tarim-South China-North India Connection in the Periphery of Rodinia

Detrital Zircon U-Pb-Hf Isotopes of Middle Neoproterozoic Sedimentary Rocks in the Altyn Tagh Orogen, Southeastern Tarim: Insights for a Tarim-South China-North India Connection in the Periphery of Rodinia

An Early Paleozoic Tectonic Mélange at the Western Margin of West Cathaysia: Constraints from Organic‐walled Microfossils

Nature and Evolution of Pre‐Neoproterozoic Continental Crust in South China: A Review and Tectonic Implications

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Jiangnan Orogen, South China: A ~970–820 Ma Rodinia margin accretionary belt

Cited by 218 publications

References 180 publications

Detrital Zircon U-Pb-Hf Isotopes of Middle Neoproterozoic Sedimentary Rocks in the Altyn Tagh Orogen, Southeastern Tarim: Insights for a Tarim-South China-North India Connection in the Periphery of Rodinia

Detrital Zircon U-Pb-Hf Isotopes of Middle Neoproterozoic Sedimentary Rocks in the Altyn Tagh Orogen, Southeastern Tarim: Insights for a Tarim-South China-North India Connection in the Periphery of Rodinia

An Early Paleozoic Tectonic Mélange at the Western Margin of West Cathaysia: Constraints from Organic‐walled Microfossils

Nature and Evolution of Pre‐Neoproterozoic Continental Crust in South China: A Review and Tectonic Implications

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Jiangnan Orogen, South China: A ~970–820 Ma Rodinia margin accretionary belt