U-Pb zircon and CHIME monazite dating of granitoids and high-grade metamorphic rocks from the Eastern and Peninsular Thailand — A new report of Early Paleozoic granite

Kawakami, Tetsuo; Nakano, Nobuhiko; Higashino, Fumiko; Hokada, Tomokazu; Osanai, Yasuhito; Yoshio, Masaki; Charusiri, Punya; Kamikubo, Hiroshi; Yonemura, Kazuhiro; Hirata, Takafumi

doi:10.1016/j.lithos.2014.04.012

Cited by 54 publications

(43 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lacassin et al (1997) reported an 40 Ar/ 39 Ar amphibole age of 446 ± 0.5 Ma from a mylonitic gneiss sample from near Lansang, within Sibumasu, which they interpreted as a Palaeozoic metamorphic event reworking older basement. Further south, Kawakami et al (2014) reported a zircon U-Pb age of 477 ± 7 Ma from the Khao Dat Fa granite, located in the Khanom area of Peninsula Thailand (Fig. 1).…”

Section: Is the Chiang Rai Line A Suture?mentioning

confidence: 99%

The closure of Palaeo-Tethys in Eastern Myanmar and Northern Thailand: New insights from zircon U–Pb and Hf isotope data

et al. 2016

View full text Add to dashboard Cite

Section: Is the Chiang Rai Line A Suture?mentioning

confidence: 99%

The closure of Palaeo-Tethys in Eastern Myanmar and Northern Thailand: New insights from zircon U–Pb and Hf isotope data

et al. 2016

View full text Add to dashboard Cite

“…Therefore, possibility of polymetamorphism and role of fluids including brines should be carefully considered in the future study of the LHC. Recognizing the timing of fluid release/infiltration during metamorphism and crystallization of plutonic bodies, and understanding the composition of fluids is of great importance especially because brines are able to recrystallize datable minerals such as monazite and rarely zircon (e.g., Seydoux-Guillaume et al, 2002;Kawakami and Suzuki, 2011;Higashino et al, 2013), which makes the interpretation of geochronological data more complex (e.g., Kawakami et al, 2014). More reliable interpretation of zircon and monazite dating in high-grade metamorphic rocks is required to understand the rate and duration of crustal processes.…”

Section: Emp Monazite and La-icpms U-pb Zircon Agesmentioning

confidence: 99%

Possible polymetamorphism and brine infiltration recorded in the garnet–sillimanite gneiss, Skallevikshalsen, Lützow–Holm Complex, East Antarctica

Kawakami

Hokada

Sakata

et al. 2016

Journal of Mineralogical and Petrological Sciences

View full text Add to dashboard Cite

Chlorine-rich (>0.3 wt%Cl) biotite inclusions in the core of garnet porphyroblasts in the garnet-sillimanite (Grt-Sil) gneiss from Skallevikshalsen, Lützow-Holm Complex (LHC), East Antarctica is estimated to be stable under >1.2 GPa, 820-850°C, coexisted with granitic melt as suggested by the nanogranite/felsite inclusions. Rare occurrence of matrix biotite, in spite of the common occurrence of biotite as inclusions in garnet, suggests almost complete consumption of pre-existed matrix biotite during the prograde to peak metamorphism. Brine infiltration during prograde to peak metamorphism in Skallevikshalsen is supported by Cl-rich scapolite described in previous studies. Brine infiltration and progress of continuous biotite-consuming melting reactions were probably responsible for elevating the Cl content of biotite in the studied sample.In situ electron microprobe U-Th-Pb dating of monazite and the in situ laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) U-Pb dating of zircon in the Grt-Sil gneiss revealed that both monazite and zircon has the 'older age population' with~650-580 Ma and the 'younger age population' with~560-500 Ma. The REE and trace element pattern of one of the P-rich patches in the garnet core is different from the Prich garnet rim. The isotope mapping of the same patch by LA-ICPMS revealed that the patch is also observed as a domain depleted in V concentration between the patch and the garnet rim suggests that this patch is not a continuous part from the garnet rim, but is likely a relic of preexisted garnet. Kyanite included in the patch suggests that the precursor rock was presumably a medium-to high-pressure type metamorphic rock. Presence of the older age population (~650-580 Ma) monazites in Skallevikshalsen and Skallen also suggest that rocks in these areas experienced polymetamorphism, and resetting by the~560-500 Ma metamorphic event was incomplete in these areas. Taking into account the presence of Cl-rich biotite inclusions in garnet, infiltration of brine accompanied by partial melting is one probable event that took place at~560-500 Ma in the Skallevikshalsen area, and part of the monazite possibly recrystallized by this brine infiltration.Detailed microstructural observation using trace element mapping combined with detailed petrography especially focusing on the Cl-bearing minerals as a tracer of brines would become a powerful tool for better interpreting the results of monazite and zircon dating and for investigating the fluid-related crustal processes.

show abstract

“…No Precambrian Sibumasu basement rocks are exposed in the Malay Peninsula, and although high-grade metamorphic rocks are reported in northern and eastern Thailand, their ages are Late Triassic (229 ± 3 to 193 ± 4 Ma;Mac-Donald et al, 2010;Kawakami et al, 2014), which rules them out as possible source rock. Although there is no candidate source material to use for modeling purposes, the isotopic ratios of samples from the Main Range are neverthe-less plotted in Figure 15A because they are likely to have been derived from similar precursors to the parental magmas of the Eastern province.…”

Section: Formation Of the Main Range Province Parental Magmamentioning

confidence: 99%

Petrogenesis of Malaysian granitoids in the Southeast Asian tin belt: Part 1. Geochemical and Sr-Nd isotopic characteristics

Chung

Robb

et al. 2015

Geological Society of America Bulletin

View full text Add to dashboard Cite

The Malaysian granitoids of the Southeast Asian tin belt have been traditionally divided into a Permian to Late Triassic "I-type"dominated arc-related Eastern province (Indochina terrane) and a Late Triassic "S-type"-dominated collision-related MainRange province (Sibumasu terrane), separated by the Bentong-Raub Paleo-Tethyan suture that closed in the Late Triassic. The present study, however, shows that this model is oversimplifi ed and that the direct application of Chappell and White's (1974) I-and S-type classifi cation cannot account for many of the characteristics shared by Malaysian granitoids. Despite being commonly hornblende bearing, as is typical for I-type granites, the roof zones of the Eastern province granites are hornblende free. In addi tion, the Main Range province granitoids contain insignifi cant primary muscovite, and are dominated by biotite granites, mineralogically similar to many of the plutons of the Eastern province. In general, the Malaysian granitoids from both provinces are more enriched in high fi eld strength elements than typical Cordilleran I-and S-type granitoids. The mineralogy and geochemistry of the Eastern province granitoids, and their relationship with contemporaneous volcanics, confi rm their I-type nature. The bulk liquid lines of descent of both granitic provinces largely overlap with one another. Sr-Nd isotopic data further demonstrate that the Malaysian granitoids, especially those of the Main Range, were hybridized melts derived from two "end-member" source regions, one of which is isotopically similar to the Kontum orthoamphibolites and the other akin to the Kontum paragneisses of the Indochina block. However, there are differences in the source rocks for the two provinces, and it is suggested in this paper that these are related to differing proportions of igneous and sedimentary protoliths. The incorporation of sedimentary-sourced melts in the Eastern province is insignifi cant, which allowed the granites in this belt to maintain their I-type nature. The presence of minor primary tin mineralization in the Eastern province compared to the much more signifi cant tin endowment in the Main Range is considered to refl ect the incorporation of a smaller proportion of sedimentary protolith in the melt products of the former.

show abstract

U-Pb zircon and CHIME monazite dating of granitoids and high-grade metamorphic rocks from the Eastern and Peninsular Thailand — A new report of Early Paleozoic granite

Cited by 54 publications

References 26 publications

The closure of Palaeo-Tethys in Eastern Myanmar and Northern Thailand: New insights from zircon U–Pb and Hf isotope data

The closure of Palaeo-Tethys in Eastern Myanmar and Northern Thailand: New insights from zircon U–Pb and Hf isotope data

Possible polymetamorphism and brine infiltration recorded in the garnet–sillimanite gneiss, Skallevikshalsen, Lützow–Holm Complex, East Antarctica

Petrogenesis of Malaysian granitoids in the Southeast Asian tin belt: Part 1. Geochemical and Sr-Nd isotopic characteristics

Contact Info

Product

Resources

About