Early Paleozoic subduction in the Indochina interior: Revealed by Ordo-Silurian mafic-intermediate igneous rocks in South Laos

Wang, Yuejun; Qian, Xiaoxian; Zhang, Yuzhi; Gan, Chengshi; Senebouttalath, Vongpaseuth; Wang, Yang

doi:10.1016/j.lithos.2020.105488

Cited by 32 publications

(54 citation statements)

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“…The sampling locations, stratigraphic sequence, and detrital zircon dating results are summarized in Figures 1-3, Table 1, and Figure S1, respectively. Wang et al (2020aWang et al ( , 2020bWang et al ( , 2020c. 6d-6f).…”

Section: Detrital Zircon U-pb Dating and Lu-hf Isotope Results For Sedimentary Rocksmentioning

confidence: 99%

“…In fact, in the eastern Indochina region of East Gondwana northern margin, Wang et al (2020aWang et al ( , 2020bWang et al ( , 2020c revealed a northerly younging early middle Paleozoic (∼485-410 Ma with the majority at ∼460-430 Ma) igneous event related to convergent plate margin activity (Figures 3b and 3d). This igneous activity was accompanied by the ∼450-424 Ma metamorphism and regional unconformities among the late Cambrian and latest Silurian/earliest Devonian strata, along with coeval with deep-water turbidities and radiolarian-bearing chert (e.g., Maluski et al, 2005;Nakano et al, 2007;Nam et al, 2003;H.…”

Section: Early Paleozoic Accretionary Orogen Model Along East Gondwana Peripherymentioning

confidence: 99%

“…In western Peninsular Malaysia of the southern Sibumasu, the Gerik-Dinding metamorphosed felsic to intermediate volcanic rocks to the west of the Bentong-Raub suture zone have been mapped as the products of the Cambrian-Ordovician Machinchang Formation (Figure 1b; e.g., Quek et al, 2018;Sone & Metcalfe, 2008;Ueno & Hisada, 2001). Wang et al (2011Wang et al ( , 2012; Dong et al (2013aDong et al ( , 2013b; Lin et al (2013); Kawakami et al (2014); Xing et al (2016); Zhao et al (2016); Hieu et al (2016); Gardiner et al (2017); Liu et al (2018Liu et al ( , 2021; Shi et al (2019); Minh et al (2020) and Wang et al (2020aWang et al ( , 2020bWang et al ( , 2020c.…”

Section: Geological Backgroundmentioning

confidence: 99%

“…The whole-rock major oxides, trace elements, and Sr-Nd-Pb isotopes analytical results of 20 granitoids are listed in Liu et al, 2009;C. Shi et al, 2010;Zhu et al, 2011;Wang et al, , 2020a Indochina and the Ordovician granitoids in South Tibet (Figure 8a; e.g., Wang et al, 2012Wang et al, , 2018Wang et al, , 2020aWang et al, , 20 20b, 2020c. However, such isotopic compositions are higher than those of the South China Ordovician-Silurian granites and the Lincang (SW Yunnan)-Sukhothai (NW Thailand) Triassic granites (Figure 8a; e.g., Chen et al, 2007;Imayama & Arita, 2008;S.…”

Section: Geochemical Characteristics Of the Early Paleozoic Granitoidsmentioning

confidence: 99%

“…Sr-Nd isotopic data for the Mandi mafic rocks and Greater Himalayan granite, Gangdese I-type granite, Lincang-Inthanon granite, Lachlan I-and S-type granites and Ordovician sedimentary rocks, South China early Paleozoic granite, and eastern Indochina early Paleozoic mafic rocks are from Robinson et al (2001), Miller et al (2001, Imayama and Arita (2008), Zhu et al (2012), and Wang et al ( , 2020aWang et al ( , 2020bWang et al ( , 2020c and references therein. Pb isotopic data for Tethyan Ocean, Indian oceanic turbidites and eastern Indochina early Paleozoic mafic rocks are from Petford andAtherton (1996), Miller et al (2001), Hou et al (2003), Wang et al (2008Wang et al ( , 2020aWang et al ( , 2020bWang et al ( , 2020c. DMM, OIB, NHRL, EMI, EMII, Altantic-Pacific Ocean MORB, Indian Ocean MORB and NCC are from Kay (1978), Hart (1984Hart ( , 1988, Zindle and Hart (1986), Hou et al (2003), andWang et al (2008).…”

Section: Re-appraisal Cambrian-silurian Strata In the Sibumasumentioning

confidence: 99%

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Prototethyan Accretionary Orogenesis Along the East Gondwana Periphery: New Insights From the Early Paleozoic Igneous and Sedimentary Rocks in the Sibumasu

Wang

Qian

Cawood

et al. 2021

Geochem Geophys Geosyst

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Section: Detrital Zircon U-pb Dating and Lu-hf Isotope Results For Sedimentary Rocksmentioning

confidence: 99%

Section: Early Paleozoic Accretionary Orogen Model Along East Gondwana Peripherymentioning

confidence: 99%

Section: Geological Backgroundmentioning

confidence: 99%

Section: Geochemical Characteristics Of the Early Paleozoic Granitoidsmentioning

confidence: 99%

Section: Re-appraisal Cambrian-silurian Strata In the Sibumasumentioning

confidence: 99%

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Prototethyan Accretionary Orogenesis Along the East Gondwana Periphery: New Insights From the Early Paleozoic Igneous and Sedimentary Rocks in the Sibumasu

Wang

Qian

Cawood

et al. 2021

Geochem Geophys Geosyst

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Ordovician continental arc magmatism in the Tam Ky‐Phuoc Son Suture Zone, Central Indochina Block, Southeast Asia

et al. 2022

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The Indochina Block is considered as a part of the Indian and Australian margins of Gondwana, and the Tam Ky-Phuoc Son Suture Zone (TPSZ) lies in its central region as the boundary between the Truong Son Belt and Kon Tum Massif (KTM). However, the early Palaeozoic tectonic nature and timing of magmatism within the TPSZ are still controversial. To tackle the issue, we present herein the zircon U-Pb ages with their trace-element compositions of five dioritic-granitic granitoids in the TPSZ.U-Pb age dating of magmatic zircons from them suggests emplacement ages of ca. 447-450 Ma. Whole-rock geochemistry of the samples shows low TiO 2 contents (0.36-1.18 wt%) and Mg# (42.04-53.07). They display enrichment in light rare earth elements ([La/Yb] N = 4.10-15.19), pronounced negative Nb, Ta and Ti anomalies relative to the chondrite-normalized rare earth element patterns and primitive mantlenormalized trace-element distribution diagrams. The whole-rock geochemical characteristics together with zircon trace-element compositions from the same samples revealed their petrogenesis of a continental arc tectonic setting. Combining the results from this study together with available data from the TPSZ and its neighbouring units, we suggest accretionary orogenesis was responsible for generation of the Ordovician magmatic arc in the KTM, which will provide better understanding of the Early Palaeozoic evolution of the eastern Indochina Block.

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Closing of the east Palaeo‐Tethys Ocean: Source–sink records from Middle Triassic sediments, Hainan Island, China

Gao,

Xu,

Kong

et al. 2024

Geological Journal

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During the Late Palaeozoic to Early Mesozoic, the eastern segment of the Palaeo–Tethys Ocean closed, resulting in the collision and amalgamation of the South and North Hainan Islands. However, the exact location of the collision and amalgamation remains controversial. The main collision locations are the Baisha, Jiusuo–Lingshui and Changjiang–Qionghai faults. The U–Pb age of detrital zircons was used to determine the main source area of the Middle Triassic basin in the eastern part of Hainan Island and the closed position of the eastern section of the Palaeo‐Tethys Ocean. The U–Pb dating of detrital zircons revealed that the Middle Triassic Lingwen Formation contains four age groups: 235–258, 335–446, 766–986 and >1000 Ma. Notably, rock masses aged 248–252 Ma that were formed in a post‐orogenic tension setting have been identified in the western region of Hainan Island, whereas no igneous rocks from this period have been discovered in the eastern region. The detrital zircon samples from the Lingwen Formation revealed a peak at 249 ± 2 Ma U–Pb age, which is important evidence indicating that the Changjiang–Qionghai Fault is the product of collision between the southern and northern Hainan terranes. Affected by the bipolar subduction of the eastern segment of the Palaeo‐Tethys Ocean, the collision and amalgamation of the South and North Hainan terranes occurred, and experienced a post‐collision (extensional) process at ca. 249 ± 2 Ma.

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Early Paleozoic subduction in the Indochina interior: Revealed by Ordo-Silurian mafic-intermediate igneous rocks in South Laos

Cited by 32 publications

References 93 publications

Prototethyan Accretionary Orogenesis Along the East Gondwana Periphery: New Insights From the Early Paleozoic Igneous and Sedimentary Rocks in the Sibumasu

Prototethyan Accretionary Orogenesis Along the East Gondwana Periphery: New Insights From the Early Paleozoic Igneous and Sedimentary Rocks in the Sibumasu

Ordovician continental arc magmatism in the Tam Ky‐Phuoc Son Suture Zone, Central Indochina Block, Southeast Asia

Closing of the east Palaeo‐Tethys Ocean: Source–sink records from Middle Triassic sediments, Hainan Island, China

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