Dynamics of closure of the Proto-Tethys Ocean: A perspective from the Southeast Asian Tethys realm

Liu, Junlai; Chen, Xiaoyu; Fan, Wenkui; Shan, Hongshuai; Yan, Jiaxin; Ding, Xu; Zhao, Tianyu; Liu, Zhenghong; Xu, Zhongyuan

doi:10.1016/j.earscirev.2021.103829

Cited by 19 publications

(4 citation statements)

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“…Most inherited cores have oscillatory zoning with a high Th/U ratio (0.2–1) and are most likely derived from a magmatic protolith. The inherited zircons with ages between 243 and 195 Ma are possibly related to melting from the waning stage of subduction to post‐continental collision during the closure of the Tethys Oceans in the Permo‐Triassic (Figures 12b and 12c) (Deng et al., 2014; Liu et al., 2021). The inherited zircons between 80 and 82 Ma are interpreted as newly grown zircons during anatexis.…”

Section: Discussionmentioning

confidence: 99%

Crustal Anatexis and Initiation of the Continental‐Scale Chongshan Strike‐Slip Shear Zone on the Southeastern Tibetan Plateau

et al. 2023

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Section: Discussionmentioning

confidence: 99%

Crustal Anatexis and Initiation of the Continental‐Scale Chongshan Strike‐Slip Shear Zone on the Southeastern Tibetan Plateau

et al. 2023

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“…Proto‐Tethys tectonic evolution model diagram (modified after Liu, Chen, Fan, et al, 2021; Zhao, 2019). …”

Section: Discussionmentioning

confidence: 99%

“…At that time, East Gondwana was a passive continental margin. In the Early Cambrian ($536 Ma or earlier), the Proto-Tethys Ocean began to subduct southward (now F I G U R E 1 3 Proto-Tethys tectonic evolution model diagram (modified after Liu, Chen, Fan, et al, 2021;Zhao, 2019).…”

Section: Tectonic Property Of the Lancang Blockmentioning

confidence: 99%

“…In contrast, some scholars believe that these Early Palaeozoic granites formed in response to the southward (now westward) subduction of the Proto‐Tethys Ocean (Cawood et al, 2007; Ding et al, 2015; Li et al, 2016; Wang, Xing, et al, 2013), and the northern margin of East Gondwana was an active continental margin. In addition, some researchers have proposed bisubduction patterns (Liu, 2020; Liu, Chen, Fan, et al, 2021; Zhao, 2019). In order to address the uncertain nature of the Proto‐Tethys and varied tectonic models, we conducted chronological and geochemical investigations of the Early Palaeozoic sedimentary rocks from the Baoshan and Lancang Blocks located in Western Yunnan, China.…”

Section: Introductionmentioning

confidence: 99%

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Detrital zircon U–Pb isotopes and whole‐rock geochemistry of early Palaeozoic sediments of the Baoshan and Lancang Blocks, SW China: Implications for Proto‐Tethys evolution and Gondwana reconstruction

Gao

Liu

et al. 2023

Geological Journal

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The palaeogeographic reconstruction of the microcontinents on the northern margin of Gondwanaland and the tectonic evolution model of the Proto‐Tethys in the Early Palaeozoic remain controversial. The Baoshan and Lancang Blocks in SW Yunnan, China, were located on the northern margin of the Gondwana continent during the Early Palaeozoic. In this study, we present new zircon U–Pb ages and whole‐rock geochemistry data for the sedimentary rocks of the Lancang Group in the Lancang Block and the Mengtong Group in the Baoshan Block to reveal the nature of sedimentary provenance with a further tectonic evolution model of the Proto‐Tethys. Our new detrital zircon U–Pb results, in conjunction with the published age of the metamorphic volcanic rock interlayers, suggest that the Mengtong and Lancang groups were probably deposited during the Early Palaeozoic. The Mengtong and Lancang groups have similar detrital zircon age spectra and display three distinctive age peaks at 1.2–1.1 Ga, ~0.95 Ga, and 0.6–0.5 Ga. This implies that the Baoshan‐Lancang Block was situated in the transitional zone between India and Australia on the Gondwana margin and received detritus from both cratons. Combined with abundant volcanic rocks in the Lancang Group and SSZ‐type ophiolites in the Changning‐Menglian belt, the Lancang Block should be reconstructed as a continental island arc of the Baoshan Block in the Early Palaeozoic. The geochemical analysis results show that the sediments of the two strata were primarily sourced from felsic rocks in the upper crust, and they were deposited in the active continental margin. Combined with previous research, we propose a new tectonic evolution model for the Proto‐Tethys Ocean in the Early Palaeozoic, from bisubduction to collisional orogeny.

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Implications of Salt Tectonics on Hydrocarbon Ascent in the Eastern Persian Gulf: Insights into the Formation Mechanism of Salt Diapirs, Gas Chimneys, and Their Sedimentary Interactions

Xue,

Luan,

Raveendrasinghe

et al. 2024

J. Ocean Univ. China

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Dynamics of closure of the Proto-Tethys Ocean: A perspective from the Southeast Asian Tethys realm

Cited by 19 publications

References 182 publications

Crustal Anatexis and Initiation of the Continental‐Scale Chongshan Strike‐Slip Shear Zone on the Southeastern Tibetan Plateau

Crustal Anatexis and Initiation of the Continental‐Scale Chongshan Strike‐Slip Shear Zone on the Southeastern Tibetan Plateau

Detrital zircon U–Pb isotopes and whole‐rock geochemistry of early Palaeozoic sediments of the Baoshan and Lancang Blocks, SW China: Implications for Proto‐Tethys evolution and Gondwana reconstruction

Implications of Salt Tectonics on Hydrocarbon Ascent in the Eastern Persian Gulf: Insights into the Formation Mechanism of Salt Diapirs, Gas Chimneys, and Their Sedimentary Interactions

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