Late Triassic post-collisional granites related to Paleotethyan evolution in SE Thailand: Geochronological and geochemical constraints

Qian, Xiaoxian; Feng, Qinglai; Wang, Yuejun; Zhao, Tianyu; Zi, Jian–Wei; Udchachon, Mongkol

doi:10.1016/j.lithos.2017.06.026

Cited by 49 publications

(41 citation statements)

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“…4 in [1] ) [9] , [36] , [37] , [38] , [39] , [40] , [41] , [42] , [43] , [44] , [45] εNd (t) against age (Fig. 5a in [1] ) [44] , [46] , [47] , [48] , [49] . εNd (t) against initial Sr (Fig.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“… εNd (t) against initial Sr (Fig. 5c in [1] ) Sibumasu [37] Indochina [46] , [50] , [51] Sukhothai including Lincang and Chanthaburi [42] , [44] , [48] , [49] , [52] , [53] , [54] , [55] , [56] , [57] Inthanon Zone including Bentong Raub [44] , [47] , [49] Lhasa [58] Truong Son [59] , [60] Lead [41] , [59] , [61] , [62] , [63] . 207 Pb/ 204 Pb (i) against 206 Pb/ 204 Pb (i) (Fig.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“… 207 Pb/ 204 Pb (i) against 206 Pb/ 204 Pb (i) (Fig. 5d in [1] ) Grid of εNd (t) including converted εHf (t) [Published data from [9] , [37] , [38] , [40] , [44] , [46] , [48] , [49] , [51] , [52] , [55] , [60] , [64] , [65] , [66] , [67] ]. (Fig.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

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Data analysis of the U–Pb geochronology and Lu–Hf system in zircon and whole-rock Sr, Sm–Nd and Pb isotopic systems for the granitoids of Thailand

et al. 2018

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This data article provides zircon U–Pb and Lu–Hf isotopic information along with whole-rock Sm–Nd, Sr and Pb isotopic geochemistry from granitoids in Thailand. The U–Pb ages are described and the classification of crystallisation and inherited ages are explained. The petrography of the granitoid samples is detailed. The data presented in this article are interpreted and discussed in the research article entitled “Probing into Thailand’s basement: New insights from U–Pb geochronology, Sr, Sm–Nd, Pb and Lu–Hf isotopic systems from granitoids” (Dew et al., 2018).

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

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Data analysis of the U–Pb geochronology and Lu–Hf system in zircon and whole-rock Sr, Sm–Nd and Pb isotopic systems for the granitoids of Thailand

et al. 2018

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“…Long-lasting subduction of Paleo-Tethyan oceanic lithosphere from the Middle Devonian until the early Late Triassic (Sone & Metcalfe 2008) beneath Indochina is characterized by island arc and back-arc basin and magmatic arc development, which resulted in a belt of north-south-aligned I-type (mantle-derived) granites (Eastern Granite Province) exposed across the Sukhothai arc and Indochina alike (Cobbing 2011;Searle et al 2012;Metcalfe 2013). These I-type granites of the Eastern Granite Province are exposed in our study area (Figs 2 and 5) and typically yield late Triassic zircon U-Pb ages (Qian et al 2017, and references therein). The Klaeng Fault 'cryptic suture zone' contains mylonitic gneisses and migmatites (Sone et al 2012), which seem to show peak metamorphism ages of 234 ± 3 and 232 ± 2 Ma (Geard 2008) and constrain the collision and final closure of the Paleo-Tethyan Ocean (Gardiner et al 2016; Qian et al 2017).…”

Section: Assembly Of the Basement Units Of Thailandmentioning

confidence: 88%

“…In general, the granites that intruded into the Indochina terrane have more juvenile geochemical and isotopic characteristics, as indicated by positive zircon εNd values, whereas the Sibumasu block and the Inthanon Zone provide negative zircon εNd values, implying that the source for the latter granitoids was more evolved, and possibly pertains to recycled crust (Qian et al 2017;Dew et al 2018a, b). The Sukhothai Arc has intermediate zircon εNd values, indicative of a more hybrid crustal source (Dew et al 2018a).…”

Section: Assembly Of the Basement Units Of Thailandmentioning

confidence: 99%

Cenozoic tectonic evolution of southeastern Thailand derived from low-temperature thermochronology

Nachtergaele

Glorie

Morley

et al. 2019

JGS

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Low-temperature thermochronological techniques, specifically apatite (U-Th)/He and apatite fission-track dating, were used to reconstruct the thermal history of southeastern Thailand. This area is intersected by vast and complex fault networks related to the Cenozoic Mae Ping and Three Pagodas Faults. These were identified from satellite imagery and confirmed by field observations. New apatite fission-track and apatite (U-Th)/He data were collected from crystalline basement blocks within these fault networks. Ages obtained range from 48 to 24 Ma, with most of the samples clustering between 36 and 24 Ma. Thermal history modelling indicates late Eocene-Oligocene exhumation of the exposed granitic and metamorphic basement rocks in southeastern Thailand. Exhumation was regional and was contemporaneous with sinistral fault activity during the late Eocene-early Oligocene along the Mae Ping Fault and Three Pagodas Fault. Moreover, this exhumation occurred coevally with a synrift phase of intracontinental offshore rift basin and half-graben basin development in the eastern Gulf of Thailand. The phase of exhumation ended in the early Miocene, as a result of the changing plate-tectonic forces along the complex plate boundaries of Sundaland.

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Petrogenesis of the early Jurassic Ora batholith in south‐western Cambodia

et al. 2022

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The Ora batholith in south‐western Cambodia is situated in the western part of Indochina and east of the Inthanon–Bentong–Raub Palaeo‐Tethys suture and thus bears significant constraints for the equivocal crustal generation of the Palaeo‐Tethys orogenic belt in Mainland South‐east Asia. The Ora batholith consists of monzonitic granite (Group 1), alkali‐feldspar granite (Group 2), and biotite granite (Group 3), and they yield similar Early Jurassic ages of 186.0–199.7 Ma. Group 2 are high‐silica (SiO2 > 75 wt%) rocks with lower TiO2, Al2O3, FeOtot, MgO, CaO, P2O5, Eu, Ba, Sr, P, and Ti contents compared to those of the other two groups. Group 2 and 3 are classified as fractionated‐type granitoids, whereas Group 1 is unfractionated granite as the complementary residual of the fractionated rocks. All groups have positive εHf(t) values from +2.29 to +8.83, suggesting they were cogenetic and derived from partial melting of the lower crust with the addition of asthenospheric mantle material. Integrating with other granitoids in this region, we suggest the Ora granitoids belong to I‐type granitoids. Our petrogenetic and zircon U–Pb age data suggest the Ora granitoids were related to the Early Jurassic post‐collisional magmatism that resulted from crustal thickening and mantle lithospheric delamination due to a denser crustal root than the underlying mantle lithosphere after the Palaeo‐Tethys Ocean closure and collision between the Sibumasu and Indochina terranes. Then the following upwelling of the asthenospheric mantle not only heated and caused partial melting of the lower crust and mantle wedge, but also supplied asthenospheric material to generate the high‐εHf(t) magma.

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Late Triassic post-collisional granites related to Paleotethyan evolution in SE Thailand: Geochronological and geochemical constraints

Cited by 49 publications

References 85 publications

Data analysis of the U–Pb geochronology and Lu–Hf system in zircon and whole-rock Sr, Sm–Nd and Pb isotopic systems for the granitoids of Thailand

Data analysis of the U–Pb geochronology and Lu–Hf system in zircon and whole-rock Sr, Sm–Nd and Pb isotopic systems for the granitoids of Thailand

Cenozoic tectonic evolution of southeastern Thailand derived from low-temperature thermochronology

Petrogenesis of the early Jurassic Ora batholith in south‐western Cambodia

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