Geochemistry and zircon U-Pb geochronology of the Dak Krong plutonic rocks in the Kontum Massif (central Vietnam) and their petrogenetic implications
Author affiliations
DOI:
https://doi.org/10.15625/2615-9783/18411Keywords:
Geochemistry, zircon U-Pb geochronology, Dak Krong granites, Indosinian orogeny.Abstract
Dak Krong plutonic rocks are found in the Kontum Massif along the N-S-oriented Po Ko River and mainly within the distributive area of the Ben Giang-Que Son granitic bodies. The Hai Van complex crosscuts the Dak-Krong rocks. They are predominantly composed of plagioclase (35-47%), quartz (29-30%), K-feldspar (20-28%), and minor biotite (3-4%). Geochemically, they are characterized by meta- to peraluminous and high-K affinities and straddle I- and S-type granite fields. Zircon U-Pb dating results yielded two main magmatic stages (ca. 258 Ma and ca. 245 Ma) spanning two phases of magmatism presumably accepted as being associated with the Paleo-Tethys Ocean evolution: latest subduction to syn-collisional phases. The Hf isotope data from zircon with eHf(t) ranging between -6.4 and -0.5 indicates a crustal signature. From the results of eHf(t) values along with zircon Hf model ages (TDM2) ranging from 1165-1497 Ma, it is presumable that the Dak Krong plutonic rocks are the product of the partial melting of Mesoproterozoic crustal materials with a negligible contribution of mantle materials. Together with other Permian-Triassic magmatic complexes throughout the Kontum Massif (e.g., Ben Giang-Que Son, Hai Van, and Van Canh complexes) and other plutonic further to the north along the Truong Son Belt and the Song Ma suture zone, the Dak Krong plutonic rocks represent magmatism generated by the amalgamation of Indochina and South China during the Late Permian-Early Triassic, referred to as Indosinian orogeny.
Downloads
References
Bao N.X., 2000. Tectonics and metallogeny of southern Vietnam, Project Report. South Vietnam Geological Mapping Division (in Vietnamese), Hochiminh.
Boehnke P., Watson E.B., Trail D., Harrison T.M., Schmitt A.K., 2013. Zircon saturation re-revisited. Chemical Geology, 351, 324-334.
Bouvier A., Vervoort J.D., Patchett P.J., 2008. The Lu-Hf and Sm-Nd isotopic composition of CHUR: Constraints from unequilibrated chondrites and implications for the bulk composition of terrestrial planets. Earth and Planetary Science Letters, 273, 48-57.
Bui M.T., Le D.B., Nguyen D.T., Nguyen H.T., Nguyen L.N., Pham D.L., Tran T.H., Tran T.A., Trinh V.L., Trinh X.H., 2010. Magmatism in Vietnam. Mapping Publishing House, Hanoi.
Carter A., Roques D., Bristow C., Kinny P., 2001. Understanding Mesozoic accretion in Southeast Asia: significance of Triassic thermotectonism (Indosinian orogeny) in Vietnam. Geology, 29, 211-214.
Chappell B.W., Bryant C.J., Wyborn D., White A.J.R., Williams, I.S., 1998. High‐and low temperature I type granites. Resource Geology, 48, 225-235.
Chappell B.W., White A.J.R., Williams I.S., Wyborn D., 2004. Low-and high-temperature granites, in: Special Paper of the Geological Society of America. Geological Society of America, 125-140.
Cox K.G., Bell J.D., Pankhurst R.J., 1979. The interpretation of igneous rocks. London, Allen.
Faure M., Lepvrier C., Nguyen V. Van, Vu T. Van, Lin W., Chen Z., 2014. The South China block-Indochina collision: Where, when, and how? Journal of Asian Earth Sciences, 79, 260-274.
Faure M., Nguyen V.V., Hoai L.T.T., Lepvrier C., 2018. Early Paleozoic or Early-Middle Triassic collision between the South China and Indochina Blocks: The controversy resolved? Structural insights from the Kon Tum massif (Central Vietnam). Journal of Asian Earth Sciences, 166, 162-180.
Griffin W.L., Pearson N.J., Belousova E., Jackson S.E., van Achterbergh E., O’Reilly S.Y., Shee S.R., 2000. The Hf isotope composition of cratonic mantle: LAM-MC-ICPMS analysis of zircon megacrysts in kimberlites. Geochimica et Cosmochimica Acta, 64, 133-147.
Harris N.B.W., Pearce J.A., Tindle A.G., 1986. Geochemical characteristics of collision-zone magmatism. Geological Society, London, Special Publications, 19, 67-81.
Hieu P.T., Chen F.K., Thuy N.T.B., Quoc Cuong N., Li S.Q., 2013. Geochemistry and zircon U-Pb ages and Hf isotopic composition of Permian alkali granitoids of the Phan Si Pan zone in northwestern Vietnam. Journal of Geodynamics, 69, 106-121.
Hieu P.T., Li S.Q., Yu Y., Thanh N.X., Dung L.T., Tu V. Le, Siebel W., Chen F., 2017. Stages of late Paleozoic to early Mesozoic magmatism in the Song Ma belt, NW Vietnam: evidence from zircon U-Pb geochronology and Hf isotope composition. International Journal of Earth Sciences, 106, 855-874.
Hieu P.T., Yang Y.-Z., Binh D.Q., Nguyen T.B.T., Dung L.T., Chen F., 2015. Late Permian to Early Triassic crustal evolution of the Kontum massif, central Vietnam: zircon U–Pb ages and geochemical and Nd-Hf isotopic composition of the Hai Van granitoid complex. International Geology Review, 57, 1877-1888.
Hieu P.T., Anh N.T., Minh P., Thuy N.T., 2020. Geochemistry, zircon U-PB ages and HF isotopes of the Muong Luan granitoid pluton, Northwest Vietnam and its petrogenetic significance. Island Arc., 29(1), e12330.
Hoa T.T., Anh T.T., Phuong N.T., Dung P.T., Anh T.V., Izokh A.E., Borisenko A.S., Lan C.Y., Chung S.L., Lo C.H., 2008. Permo-Triassic intermediate-felsic magmatism of the Truong Son belt, eastern margin of Indochina. Comptes Rendus Geoscience, 340, 112-126.
Hoskin P.W.O., Schaltegger U., 2003. The Composition of Zircon and Igneous and Metamorphic Petrogenesis. Reviews in Mineralogy and Geochemistry, 53, 27-62.
Hung D.D., Tsutsumi Y., Hieu P.T., Minh N.T., Minh P., Dung N.T., Hung N.B., Komatsu T., Hoang N., Kawaguchi K., 2022. Van Canh Triassic granite in the Kontum Massif, central Vietnam: geochemistry, geochronology, and tectonic implications. Journal of Asian Earth Sciences, X(7), 100075.
Khuc V., 2000. The Triassic of Indochina Peninsula and its interregional correlation. In Developments in Palaeontology and Stratigraphy. Elsevier, 18, 221-233.
Lepvrier C., Maluski H., Van Tich V., Leyreloup A., Truong Thi P., Van Vuong N., 2004. The Early Triassic Indosinian orogeny in Vietnam (Truong Son Belt and Kontum Massif); implications for the geodynamic evolution of Indochina. Tectonophysics, 393, 87-118.
Lepvrier C., Van Vuong N., Maluski H., Truong Thi P., Van Vu T., 2008. Indosinian tectonics in Vietnam. Comptes Rendus-Geoscience, 340, 94-111.
Liu J., Tran M.-D., Tang Y., Nguyen Q.-L., Tran T.-H., Wu W., Chen J., Zhang Z., Zhao Z., 2012. Permo-Triassic granitoids in the northern part of the Truong Son belt, NW Vietnam: Geochronology, geochemistry and tectonic implications. Gondwana Research, 22, 628-644.
Ludwig K.R., 2008. Isoplot 3.6. Berkeley Geochronology Center Special Publication, 4, 77.
Metcalfe I., 2017. Tectonic evolution of Sundaland. Bulletin of the Geological Society of Malaysia, 63, 27-60.
Metcalfe I., 2013. Gondwana dispersion and Asian accretion: Tectonic and palaeogeographic evolution of eastern Tethys. Journal of Asian Earth Sciences, 66, 1-33.
Miller C.F., McDowell S.M., Mapes R.W., 2003. Hot and cold granites: Implications of zircon saturation temperatures and preservation of inheritance. Geology, 31, 529-532.
Minh P., Hieu P.T., Hoang N.K., 2018. Geochemical and geochronological studies of the Muong Hum alkaline granitic pluton from the Phan Si Pan Zone, northwest Vietnam: Implications for petrogenesis and tectonic setting. Island Arc., 27, e12250.
Pham M., Pham Trung H., Kawaguchi K., Nong Thi Quynh A., Le Duc P., 2022. Geochemistry, zircon U-Pb geochronology and Sr-Nd-Hf isotopic composition of the Cha Val plutonic rocks in central Vietnam: Implications for Permian-Triassic Paleo-Tethys subduction-related magmatism. Vietnam Journal of Earth Sciences, 44(3), 301-326. https://doi.org/10.15625/2615-9783/16842.
Pham T.T., Shellnutt J.G., Tran T.A., Denyszyn S.W., Iizuka Y., 2022. Petrogenesis of silicic rocks from the Phan Si Pan-Tu Le region of the Emeishan large igneous province, northwestern Vietnam. Geological Society, London, Special Publications, 518, 227-254.
Nakano N., Osanai Y., Owada M., Nam T.N., Charusiri P., Khamphavong K., 2013. Tectonic evolution of high-grade metamorphic terranes in central Vietnam: Constraints from large-scale monazite geochronology. Journal of Asian Earth Sciences, 73, 520-539.
Nguyen T.T.B., Satir M., Siebel W., Chen F., 2004. Granitoids in the Dalat zone, southern Vietnam: age constraints on magmatism and regional geological implications. International Journal of Earth Sciences, 93, 329-340.
Owada M., Osanai Y., Nakano N., Adachi T., Kitano I., Van Tri T., Kagami H., 2016. Late Permian plume-related magmatism and tectonothermal events in the Kontum Massif, central Vietnam. Journal of Mineralogical and Petrological Sciences, 111, 181-195.
Pearce J.A., Harris N.B.W., Tindle A.G., 1984. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. Journal of Petrology, 25, 956-983.
Peccerillo A., Taylor S.R., 1976. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, northern Turkey. Contributions to Mineralogy and Petrology, 58, 63-81.
Sang D.Q., 2011. Petrographic characteristics and zircon U-Pb geochronology of granitoid rocks in the southern Ben Giang, Quang Nam province. Science and Technology Development Journal, 14, 17-30.
Scherer E., Münker C., Mezger K., 2001. Calibration of the Lutetium-Hafnium Clock. Science, 293, 683-687.
Shand S.J., 1943. The eruptive rocks, 2nd ed. John Wiley, New York.
Shellnutt J.G., Lan C.Y., Van Long T., Usuki T., Yang H.J., Mertzman S.A., Iizuka Y., Chung S.L., Wang K.L., Hsu W.Y., 2013. Formation of Cretaceous Cordilleran and post-orogenic granites and their microgranular enclaves from the Dalat zone, southern Vietnam: Tectonic implications for the evolution of Southeast Asia. Lithos, 182-183, 229-241.
Shellnutt J.G., Pham T.T., Denyszyn S.W., Yeh M.W., Tran T.A., 2020. Magmatic duration of the Emeishan large igneous province: Insight from northern Vietnam. Geology, 48, 457-461.
Shi M.F., Lin F.C., Fan W.Y., Deng Q., Cong F., Tran M.D., Zhu H.P., Wang H., 2015. Zircon U-Pb ages and geochemistry of granitoids in the Truong Son terrane, Vietnam: Tectonic and metallogenic implications. Journal of Asian Earth Sciences, 101, 101-120.
Sun S.S., McDonough W.F., 1989. Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes. Geological Society Special Publication, 42, 313-345.
Thanh T. V., Hieu P.T., Minh P., Nhuan D. Van, Thuy N.T.B., 2019. Late Permian-Triassic granitic rocks of Vietnam: the Muong Lat example. International Geology Review, 61, 1823-1841.
Thuy N.T.B., Satir M., Siebel W., Vennemann T., Long T. Van, 2004. Geochemical and isotopic constraints on the petrogenesis of granitoids from the Dalat zone, southern Vietnam. Journal of Asian Earth Sciences, 23, 467-482.
Tran H.T., Zaw K., Halpin J.A., Manaka T., Meffre S., Lai C.K., Lee Y., Le H. Van, Dinh S., 2014. The Tam Ky-Phuoc Son Shear Zone in central Vietnam: Tectonic and metallogenic implications. Gondwana Research, 26, 144-164.
Tran T.H., Lan C.Y., Usuki T., Shellnutt J.G., Pham T.D., Tran T.A., Pham N.C., Ngo T.P., Izokh A.E., Borisenko A.S., 2015. Petrogenesis of Late Permian silicic rocks of Tu Le basin and Phan Si Pan uplift (NW Vietnam) and their association with the Emeishan large igneous province. Journal of Asian Earth Sciences, 109, 1-19.
Tri T.V., Khuc V., 2009. Geology and natural resources of Vietnam. Natural Science and Technology Publishing House, Hanoi, 589p.
Usuki T., Lan C.Y., Yui T.F., Iizuka Y., Van Vu T., Tran T.A., Okamoto K., Wooden J.L., Liou J.G., 2009. Early Paleozoic medium-pressure metamorphism in central Vietnam: evidence from SHRIMP U-Pb zircon ages. Geosciences Journal 2009 13:3, 13, 245-256.
Trang N.V., 1986. Geology and Mineral Resources Map of Vietnam scale 1:200,000, Hue-Quang Ngai sheet series. Department of Geology and Minerals of Vietnam, Hanoi.
Wang S., Mo Y., Wang C., Ye P., 2016. Paleotethyan evolution of the Indochina Block as deduced from granites in northern Laos. Gondwana Research, 38, 183-196.
Watson E.B., Harrison T.M., 1983. Zircon saturation revisited: temperature and composition effects in a variety of crustal magma types. Earth and Planetary Science Letters, 64, 295-304.
Whalen J.B., Currie K.L., Chappell B.W., 1987. A-type granites: geochemical characteristics, discrimination and petrogenesis. Contributions to Mineralogy and Petrology, 95, 407-419.
Thanh N.X, Tu M.T., Itaya T., Kwon S., 2011. Chromian-spinel compositions from the Bo Xinh ultramafics, Northern Vietnam: Implications on tectonic evolution of the Indochina block. Journal of Asian Earth Sciences, 42, 258-267.
Downloads
Published
How to Cite
Issue
Section
