Cambrian intra–oceanic arc trondhjemite and tonalite in the Tam Ky–Phuoc Son Suture Zone, central Vietnam: Implications for the early Paleozoic assembly of the Indochina Block

Nguyen, Quyen Minh; Feng, Qinglai; Zi, Jian–Wei; Zhao, Tianyu; Tran, Hai T.; Ngo, Thanh Xuan; Tran, Dung My; Nguyen, Hung

doi:10.1016/j.gr.2019.01.002

Cited by 54 publications

(43 citation statements)

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“…During the same period, north of the Kon Tum terrane, the Tam Ky-Phuoc Son ocean, as documented by 518 Ma and 502 Ma trondhjemite-tonalite suite (Nguyen et al, 2019) extracted from the Kham Duc complex, still separated the Kon Tum terrane from other terranes of Indochina ( Figure 12B).…”

Section: Fourth and Finally The Similar Lithology And Benthic Fauna mentioning

confidence: 84%

“…Detrital zircon U-Pb ages of 550 Ma from metasandstones from the Kham Duc complex (Usuki et al, 2009), and magmatic zircon ages of 518 Ma and 502 Ma for a trondhjemitetonalite suite (Nguyen et al, 2019) reveal the existence of a Late Neoproterozoic to Early Cambrian Proto-Tethyan ocean between the Viet-Lao terrane and a continental basement preserved as block enclosed in migmatite in the Kon Tum terrane. This complex experienced a poly-cyclic metamorphism during the Early Paleozoic and the Late Permian-Early Triassic.…”

Section: Tam Ky-phuoc Son Suturementioning

confidence: 98%

“…They were derived from organic-rich claystone, chert, as well as andesitic basalt and calc-alkaline effusive protoliths ( Figure 2; Tran and Vu, 2011, p. 398). Enclosed in the Nui Vu complex, blocks of metamorphosed mafic-ultramafic rocks, 518-502 Ma trondhjemite-tonalite (Nguyen et al, 2019), chert and marble belonging to the Hiep Duc ophiolite assemblage form a tectonic mélange. Metagabbro of the Phu My complex and inherited zircon from Kan Nack complex yielded ages of 678 ± 23 Ma (Osanai, 2004) and 1404 Ma (Nam et al 2001), respectively.…”

Section: Kon Tum Terranementioning

confidence: 99%

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Neoproterozoic to Early Triassic tectono-stratigraphic evolution of Indochina and adjacent areas: A review with new data

Tran

Faure

Nguyen

et al. 2020

Journal of Asian Earth Sciences

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Section: Fourth and Finally The Similar Lithology And Benthic Fauna mentioning

confidence: 84%

Section: Tam Ky-phuoc Son Suturementioning

confidence: 98%

Section: Kon Tum Terranementioning

confidence: 99%

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Neoproterozoic to Early Triassic tectono-stratigraphic evolution of Indochina and adjacent areas: A review with new data

Tran

Faure

Nguyen

et al. 2020

Journal of Asian Earth Sciences

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“…Zircon U-Pb ages for igneous rocks have been compiled and interpreted with respect to the tectonic development of the Palaeo-Tethys convergence zone (Wang et al 2018) and the collisional zone between the Indochina and South China blocks (Nguyen et al 2019;Thanh et al 2019). These age data for igneous activity are helpful for understanding the tectonic setting of provenance regions for clastic rocks, as recorded by syn-depositional zircons that provide clues to active tectonics at the time of sedimentation, and by inherited zircons from older tectonic events.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, many igneous intrusions and extrusions dated between 520 ). This early Palaeozoic magmatism occurred in an active continental margin adjacent to a subduction zone along the South China Block (Nakano et al 2013), and was caused by the initiation of subduction and subsequent microcontinent collision between the Kontum Massif and Truong Son Belt (Faure et al 2018;Nguyen et al 2019).…”

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confidence: 99%

Revisiting the tectonic evolution of the Triassic Palaeo-Tethys convergence zone in northern Thailand inferred from detrital zircon U–Pb ages

et al. 2020

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Detrital zircon U–Pb ages for sediments in and around the Palaeo-Tethyan convergence zone in northern Thailand provide constraints for tectonic interpretations of the Indochina Block, the Sibumasu Block, the Inthanon Zone accretionary complex and the Nan Back-arc Basin during the Triassic. In sedimentary rocks of the Indochina Block, almost all of the Palaeozoic and Triassic zircons were sourced from the collision zone between the Indochina and South China blocks, and an active continental margin in the western Indochina Block. Sediments of the Sibumasu Block were supplied by erosion of Archaean basement and from the Grenville and the Pan African orogenies, but show no record of Permian to Triassic igneous activity. Accretionary complex sediments have provenances of both the Sukhothai Arc and the Indochina and South China blocks, with detrital zircons of various ages being supplied from crustal uplift and erosion related to the Indosinian I orogeny. Sedimentary rocks of the Nan Back-arc Basin are widely distributed not only in the Nan–Uttaradit but also in northern Sukhothai areas. The origin of the Pha Som Metamorphic Complex and associated formations can be traced to basin-filling sediments in the Nan Back-arc Basin. These detrital zircon U–Pb ages have also allowed identification of the changing tectonic setting in the Palaeo-Tethys convergence zone from the ‘erosion of Proterozoic continental basement’ to ‘Palaeozoic active continental margin in the western Indochina Block’ and ‘Palaeozoic, Permian to Triassic collision zone between the South China and Indochina blocks’ through to ‘Triassic active Sukhothai Arc’.

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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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Cambrian intra–oceanic arc trondhjemite and tonalite in the Tam Ky–Phuoc Son Suture Zone, central Vietnam: Implications for the early Paleozoic assembly of the Indochina Block

Cited by 54 publications

References 95 publications

Neoproterozoic to Early Triassic tectono-stratigraphic evolution of Indochina and adjacent areas: A review with new data

Neoproterozoic to Early Triassic tectono-stratigraphic evolution of Indochina and adjacent areas: A review with new data

Revisiting the tectonic evolution of the Triassic Palaeo-Tethys convergence zone in northern Thailand inferred from detrital zircon U–Pb ages

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

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