P–T evolution and tectonothermal history of metamorphic rocks in Nam Dinh, the southeasternmost part of the Day Nui Con Voi metamorphic complex, Northern Vietnam
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https://doi.org/10.15625/2615-9783/23628Keywords:
Day Nui Con Voi metamorphic complex, Red River Shear Zone, East Sea, Pressure-temperature evolution, Nam DinhAbstract
The Day Nui Con Voi high-grade metamorphic complex (DNCV) in northern Vietnam is considered the southeastern part of the Red River Shear Zone (RRSZ), a major tectonic boundary between the South China and Indochina Blocks. This study investigated minor outcrops in Nam Dinh, at the southeasternmost part of the complex, which are deficient in petrological research. It aims to establish the tectonic evolution based on the petrographic and structural features of pelitic schists and gneisses. Apart from sandstones found in the northern part, the petrographic observations reveal the metamorphic zonation from the chlorite zone, through the biotite-muscovite zone, to the sillimanite zone, progressing eastward with increasing metamorphic grade. The prominent subhorizontal mylonitic foliation (S2) folded by later open fold composes doming structure in study area. Pre-S2 microstructures (S0 and S1) and post-S2 myrmekite are also preserved. Geothermobarometric analyses of a pelitic schist in the chlorite zone and a gneiss in the sillimanite zone indicates a clockwise pressure-temperature path. The estimated metamorphic geothermal gradients are 20–25℃/km during the prograde stage, 30℃/km at peak granulite-facies metamorphism and ca. 60℃/km during retrograde conditions with the myrmekite formation. The petrological and structural characteristics are well comparable to those of the main body of the DNCV and the contemporaneous Bu Khang Dome (BKD). The combining thermal histories of the DNCV and the East Sea opening suggest the following regional tectonic evolution during Eocene-Oligocene. The Himalayan orogeny caused the crustal thickening in the DNCV and BKD on the prograde stage. Initial extensional magmatism and crustal thinning due to the onset of the East Sea opening in the back-arc setting triggered the granulite-facies metamorphism with extensive crustal anataxis, producing numerous syn-metamorphic leucogranites in the lower crust. Subsequent East Sea opening resulted in the extensional regime accompanied by the subhorizontal ductile deformation in the DNCV, and possibly in the BKD and the RRSZ. Crustal strike-slip shearing took place along the thinned and weakened anatectic crust and uplifted their metamorphic rocks with doming structure toward greenschist-facies upper crust. This process may have been correlated with the southward ridge jump of the East Sea.
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Anczkiewicz R., Viola G., Müntener O., Thirlwall M.F., Villa I.M., Quong N.Q., 2007. Structure and shearing conditions in the Day Nui Con Voi massif: Implications for the evolution of the Red River shear zone in northern Vietnam. Tectonics, 26, TC2002.
Aoya M., Kouketsu Y., Endo S., Shimizu H., Mizukami T., Nakamura D., Wallis S., 2010. Extending the applicability of the Raman carbonaceous material geothermometer using data from contact metamorphic rocks. Journal of Metamorphic Geology, 28, 895–914.
Bui T.S.V., Osanai Y., Lenz C., Nakano N., Adachi T., Belousova E., Kitano I., 2019. Gem-Quality Zircon Megacrysts from Placer Deposits in the Central Highlands, Vietnam Potential Source and Links to Cenozoic Alkali Basalts. Minerals, 9, 89.
Chen X., Burg J.-P., Liu J., Qi Y., Fan W., Wang K., 2019. Multistage Remobilization of the Southwestern Margin of the South China Plate: Insights From Zircon U-Pb Geochronology and Hf Isotope of Granitic Rocks From the Yao Shan Complex, Southeastern Tibet Plateau. Tectonics, 38, 621–640.
Chen X., Liu J., Burg J.-P., Yan J., Zhou B., Shan H., Bao X., Fan W., Zhang J., Hou C., 2023. Lateral middle-lower crustal flow in response to continental collision: New insights from the metamorphic complexes in the southeastern Tibetan Plateau. Earth-Science Reviews, 247, 104604.
Chung S.-L., Lee T.-Y., Lo C.-H., Wang P.-L., Chen C.-Y., Yem N.T., Hoa T.T., Genyao W., 1997. Intraplate extension prior to continental extrusion along the Ailao Shan-Red River shear zone. Geology, 25(4), 311–314.
Dinh M.M., 2004. Ninh Binh. Geological and Mineral Resources map of Viet Nam 1:200,000. Department of Geology and Minerals of Viet Nam, Ha Noi.
Dinh T.H., Yeh M.W., Lee T.Y., Kunk M.J., Wintsch R.P., McAleer R., 2023. Extrusion tectonism of Indochina reassessed: constraints from 40Ar/39Ar geochronology from the Day Nui Con Voi metamorphic massif, Vietnam. Frontiers in Earth Science, 11, 1125279.
Duong V.-H., Trinh P.T., Nguyen T.-D., Piestrzyski A., Nguyen D.C., Pieczonka J., Ngo X.D., Van P.T., Pham B.T., Nguyen-Van H., Van L.N., Bui D.T., Khac D.V., Bui C.T., 2021. Cu-Au mineralization of the Sin Quyen deposit in north Vietnam A product of Cenozoic left-lateral movement along the Red River shear zone. Ore Geology Reviews, 132, 104065.
Ferry J.M.T., Spear F.S., 1978. Experimental calibration of the partitioning of Fe and Mg between biotite and garnet. Contribution to Minerology and Petrology, 66(2), 113–117.
Garnier V., Giuliani G., Maluski H., Ohnenstetter D., Trong T.P., Quang V.H., Van L.P., Can T.V., Schwarz D., 2002. Ar–Ar ages in phlogopites from marble-hosted ruby deposits in northern Vietnam: evidence for Cenozoic ruby formation. Chemical Geology, 188, 33–49.
Gilley L.D., Harrison T.M., Leloup P.H., Ryerson F.J., Lover O.M., Wang J.H., 2003. Direct dating of left-lateral deformation along the Red River shear zone, China and Vietnam. Journal of Geophysical Research, 108, B2, 2127.
Grambling J.S, 1990. Internally-consistent geothermometry and H2O barometry in metamorphic rocks The example garnet-chlorite-quartz. Contribution to Minerology and Petrology, 105, 617–628.
Harley S.L., 2016. A matter of time: The importance of the duration of UHT metamorphism. Journal of Mineralogical and Petrological Sciences, 111, 50–72.
Hoang N.K., 1999. Nam Dinh. Geological and Mineral Resources map of Viet Nam 1:200000. Department of Geology and Minerals of Viet Nam, Ha Noi.
Hodges K.V., Crowley P.D., 1985. Error estimation in empirical geothermometry and geobarometry for pelitic systems. American Mineralogist, 70, 702–709.
Hodges K.V., Spear F.S., 1982. Geothermometry, geobarometry and the Al2SiO5 triple point at Mt Moosilauke, New Hampshire. American Mineralogist, 67, 1118–1134.
Hoisch T.D., 1990. Empirical calibration of six geobarometers for the mineral assemblage quartz + muscovite + biotite + plagioclase + garnet. Contribution to Minerology and Petrology, 104, 225–234.
Holdaway M.J., 2001. Recalibration of the GASP geobarometer in light of recent garnet and plagioclase activity models and versions of the garnet-biotite geothermometer. American Mineralogist, 86, 1117–1129.
Holdaway M.J., Lee S.M., 1977. Fe-Mg cordierite stability in high-grade pelitic rocks based on experimental, theoretical, and natural observation. Contribution to Minerology and Petrology, 63, 175–198.
Jolivet L., Maluski H., Beyssac O., Goffé B., Lepvrier C., Tri P.T., Vuong N.V., 1999. Oligocene-Miocene Bu Khang extensional gneiss dome in Vietnam: Geodynamic implications. Geology, 27(1), 67–70.
Jolivet L., Beyssac O., Goffé B., Avigad D., Lepvrier C., Maluski H., Thang T.T., 2001. Oligocene-Miocene midcrustal subhorizontal shear zone in Indochina. Tectonics, 20(1), 46–57.
Kohn M.J., 2014. “Thermoba-Raman-try”: Calibration of spectroscopic barometers and thermometers for mineral inclusions. Earth and Planetary Science Letters, 388, 187–196.
Kouketsu Y., Nishiyama T., Ikeda T., Enami M., 2014. Evaluation of residual pressure in an inclusion–host system using negative frequency shift of quartz Raman spectra. American Mineralogist, 99, 433–442.
Kriegsman L.M., Hensen B.J., 1998. Back reaction between restite and melt: Implications for geothermobarometry and pressure-temperature paths. Geology, 26(12), 1111–1114.
Le Breton N., Thompson A.B., 1988. Fluid-absent (dehydration)melting of biotite in metapelites in the early stages of crustal anatexis. Contributions to Mineralogy and Petrology, 99, 226–237.
Leloup P.H., Lacassin R., Tapponnier P., Schärer U., Zhong D., Liu X., Zhang L., Ji S., Trinh P.T., 1995. The Ailao Shan-Red River shear zone (Yunnan, China), Tertiary transform boundary of Indochina. Tectonophysics, 251, 3–84.
Leloup P.H., Amaud N., Lacassin R., Kienast, J.R., Harrison, T.M., Phan, T.T., Replumaz, A., Tapponnier, P., 2001. New constraints on the structure, thermochronology, and timing of the Ailao Shan-Red River shear zone, SE Asia. Journal of Geophysical Research, 106(B4), 6683–6732.
Mai H.A., Chan Y.L., Yeh M.W., Lee T.Y., 2018. Tectonic implications of Mesozoic magmatism to initiation of Cenozoic basin development within the passive South China Sea (East Sea) margin. International Journal of Earth Sciences, 107, 1153–1174.
Maluski H., Lepvrier C., Jolivet L., Carter A., Roques D., Beyssac O., Tang T.T., Thang N.D., Avigad D., 2001. Ar–Ar and fission-track ages in the Song Chay Massif: Early Triassic and Cenozoic tectonics in northern Vietnam. Journal of Asian Earth Sciences, 19, 233–248.
Nagy E.A., Schärer U., Minh N.T., 2000. Oligo-Miocene granitic magmatism in central Vietnam and implications for continental deformation in Indochina. Terra Nova, 12(2), 67–76.
Nam T.N., Torium M., Itaya T., 1998. P–T–t paths and post-metamorphic exhumation of the Day Nui Con Voi shear zone in Vietnam. Tectonophysics, 290, 299–318.
Newton R.C., Haselton H.T., 1981. Thermodynamics of the garnet-plagioclase-Al2SiO5-quartz geobarometer. In: Newton, R.C., Navrotsky, A., Wood, B.J. (Eds.), Thermodynamics of Minerals and Melts. Springer-Verlag, New York, 131–147.
Osanai Y., Nakano N., Owada M., Tran N.N., Miyamoto T., Nguyen T.M., Nguyen V.N., Tran V.T., 2008. Collision zone metamorphism in Vietnam and adjacent Southeastern Asia: Proposition for Trans Vietnam Orogenic Belt. Journal of Mineralogical and Petrological Sciences, 103, 226–241.
Palin R.M., Searle M.P., Waters D.J., Parrish R.R., Roberts N.M.W., Horstwood M.S.A., Yeh M.W., Chung S.L., Anh T.T., 2013. A geochronological and petrological study of anatectic paragneiss and associated granite dykes from the Day Nui Con Voi metamorphic core complex, North Vietnam: constraints on the timing of metamorphism within the Red River shear zone. Journal of Metamorphic Geology, 31, 359–387.
Passchier C.W., Trouw R.A.J., 2005. In: Microtectonics. Springer, Berlin, p.366.
Perchuk L.L., 1991. Derivation of a thermodynamically consistent set of geothermometers and geobarometers for metamorphic and magmatic rocks. In: Perchuk, L.L. (Ed.), Progress in Metamorphic and Magmatic Petrology: A Memorial Volume in Honor of D. S. Korzinskiy. Cambridge University Press, London, 93–111.
Pham T.T., Shellnutt J.G., Tran T.-A., Lee H.-Y., 2020. Petrogenesis of Eocene to early Oligocene granitic rocks in Phan Si Pan uplift area, northwestern Vietnam: Geochemical implications for the Cenozoic crustal evolution of the South China Block. Lithos, 372–373, 105640.
Ranaweera L.V., Perera L.R.K., Hiroi Y., 2007. Blue Dumortierite From, Habarana, Sri Lanka: Field Occurrence and Mineral Chemistry. Journal of Geological Society of Sri Lanka, 12, 53–74.
Roger F., Leloup P.H., Jolivet M., Lacassin R., Trinh P.T., Brunel M., Seward D., 2000. Long and complex thermal history of the Song Chay metamorphic dome (Northern Vietnam) by multi-system geochronology. Tactonophysics, 321, 449–466.
Searle M., Cottle J., 2024. Himalayan Leucogranites: Field Relationships and Tectonics. Elements, 20(6), 373–380.
Spear F.S., Cheney J.T., 1989. A petrogenetic grid for pelitic schists in the system SiO2-Al2O3-FeO-MgO-K2O-H2O. Contributions to Mineralogy and Petrology, 101, 149–164.
Spear F.S., Kohn M.J., Cheney J.T., 1999. P–T paths from anatectic pelites. Contributions to Mineralogy and Petrology, 134, 17–32.
Stormer J.C., 1975. Practical two-feldspar geothermometer. American Mineralogist, 60, 667–674.
Stormer J.C., Whitney J.A., 1985. Two feldspar and iron-titanium oxide equilibria in silicic magmas and the depth of origin of large volume ash-flow tuffs. American Mineralogist, 70(1-2), 52–64.
Tapponnier P., Peltzer G., Le Dalin A.Y., Cobbold P., 1982. Propagating extrusion tectonics in Asia: New insights from simple experiments with plasticine. Geology, 10(12), 611–616.
Thompson A.B., 1976. Mineral reactions in pelitic rocks; II, Calculation of some PTX (Fe-Mg) phase relations. American Journal of Science, 276, 425–454.
Travin A., Murzintsev N., Kruk N., 2024. Thermochronology of the Laojunshan-Song Chai Granite Gneiss Massif (North Vietnam, South China). Minerals, 14, 251.
Trinh P.T., Leloup P.H., Robin L., Nicolas A., 1998. Formation of Ruby in the Red River metamorphic zone. Proceedings of the NCST of Vietnam, 10(1), 143–148.
Wang P.-L., Lo C.-H., Lee T.-Y., Chung S.-L., Lan C.-Y., Yem N.T., 1998. Thermochronological evidence for the movement of the Ailao Shan-Red River shear zone: A perspective from Vietnam. Geology, 26(10), 887–890.
Wang P.-L., Lo C.-H., Chung S.-L., Lee T.-Y., Lan C.-Y., Thang T.V., 2000. Onset timing of left-lateral movement along the Ailao Shan-Red River Shear Zone: 40Ar/39Ar dating constraint from the Nam Dinh Area, northeastern Vietnam. Journal of Asian Earth Sciences, 18, 281–292.
Warr L.N., 2021. IMA-CNMNC approved mineral symbols. Mineralogical Magazine, 85, 291–320.
Wu C.M., 2017. Calibration of the garnet-biotite-Al2SiO5-quartz geobarometer for metapelites. Journal of Metamorphic Geology, 35(9), 983–998.
Yeh M.W., Lee T.Y., Lo C.H., Chung S.L., Lan C.Y., Anh T.T., 2008. Structural evolution of the Day Nui Con Voi metamorphic complex: Implications on the development of the Red River Shear Zone, Northern Vietnam. Journal of Structural Geology, 30, 1540–1553.
Zhang L.S., Schärer U., 1999. Age and origin of magmatism along the Cenozoic Red River shear belt, China. Contributions to Mineralogy and Petrology, 134, 67–85.
Zhong W., Andersen N.H., Dabrowski M., Jamtveit B., 2019. Zircon and quartz inclusions in garnet used for complementary Ramanthermobarometry: application to the Holsnøy eclogite, Bergen Arcs,Western Norway. Contributions to Mineralogy and Petrology, 174, 50.
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