Abstract
The Nansha Block (NB) is one of the blocks separated from the southern margin of the South China Craton (SCC) by the western Pacific subduction, which contains rich information of geodynamic and tectonic transformation. To reveal the essence of western Paleo-Pacific subduction during the Triassic period, Well NK-1 in this block was selected for petrographic study, and published research data from other cooperative teams were compared. A double-cycle pattern of basic to neutral magmatic volcanism was established, and 36 lithological rhythmic layers and representative cryptoexplosive breccia facies and welded tuff bands were identified. Combined with a reanalysis of published geochronological data, geochemical elements, and isotope geochemistry, we found that the rock assemblages could be divided into an intermediate-acid dacite (DA) series (SiO2>65%) and basaltic (BA) series (Co<40 µg/g), which was formed during the early Late Triassic ((218.6±3.2)−(217.9±3.5) Ma). BA exhibits obvious calc-alkaline island-arc magmatic properties: (87Sr/86Sr)i ratio ranging 0.703 77–0.711 18 (average: 0.706 45), 147Sm/144Nd ratio ranging 0.119–0.193 (average: 0.168), and chondrite-normalized rare earth element (REE) curves being flat, while DA exhibits remarkable characteristics of subducted island-arc andesitic magma: (87Sr/86Sr)i ratio (0.709 39–0.711 29; average: 0.710 35), eNd(t) value (−6.2−−4.8; average: −5.6) and εHf(t) value (−2.9−−1.7, average: −2.2) show obvious crust-mantle mixing characteristics. BA and DA reveal typical characteristics of island-arc magma systems and type II enriched mantle (EM-II) magma. BA magma was likely resulted from the process whereby the continental crust frontal accretionary wedge was driven by the Paleo-Pacific slab subduction into the deep and began to melt, resulting in that a large amount of melt (fluid) joined the asthenosphere on the side of the continental margin. In contrast, DA magma was likely resulted from the process whereby the plate front was forced to bend with increasing subduction distance, which triggered the upwelling of the asthenosphere near the continent and subsequently led to the partial melting of the lithospheric mantle and lower crust due to continuous underplating. The lithospheric thinning environment in the study area at the end of Triassic created suitable conditions for the separation between the NB and SCC, which provided an opportunity for the formation of the early intracontinental rift during the later expansion of the South China Sea (SCS).
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Data Availability Statement
The data that support the findings of this study are available from Miao et al. (2021) (https://doi.org/10.1016/j.lithos.2021.106337) and Wei et al. (2022) (https://doi.org/10.1111/ter.12556).
References
Altherr R, Holl A, Hegner E et al. 2000. High-potassium, calc-alkaline I-type plutonism in the European Variscides: northern Vosges (France) and northern Schwarzwald (Germany). Lithos, 50(1–3): 51–73, https://doi.org/10.1016/S0024-4937(99)00052-3.
Arculus R J. 2004. Evolution of arc magmas and their volatiles. In: Sparks R S J, Hawkesworth C J eds. The State of the Planet: Frontiers and Challenges in Geophysics, Volume 150. American Geophysical Union, Washington. p.95–108, https://doi.org/10.1029/150GM09.
Batchelor R A, Bowden P. 1985. Petrogenetic interpretation of granitoid rock series using multicationic parameters. Chemical Geology, 48(1–4): 43–55, https://doi.org/10.1016/0009-2541(85)90034-8.
Blichert-Toft J, Albarède F. 1999. Hf isotopic compositions of the Hawaii Scientific Drilling Project core and the source mineralogy of Hawaiian basalts. Geophysical Research Letters, 26(7): 935–938, https://doi.org/10.1029/1999GL900110.
Caricchi L, Annen C, Blundy J et al. 2014. Frequency and magnitude of volcanic eruptions controlled by magma injection and buoyancy. Nature Geoscience, 7(2): 126–130, https://doi.org/10.1038/ngeo2041.
Chen F, Cai F, Yang B H et al. 1992. Characterization of fine-grained turbidite deposits from the South China Sea sediment cores. Chinese Journal of Oceanology and Limnology, 10(2): 184–192, https://doi.org/10.1007/BF02844750.
Chen H L, Zhu M, Chen S Q et al. 2020. Basin-orogen patterns and the late Triassic foreland basin conversion process in the western Yangtze Block, China. Journal of Asian Earth Sciences, 194: 104311, https://doi.org/10.1016/j.jseaes.2020.104311.
Defant M J, Drummond M S. 1990. Derivation of some modern arc magmas by melting of young subducted lithosphere. Nature, 347(6294): 662–665, https://doi.org/10.1038/347662a0.
Ding L, Yang D, Cai F L et al. 2013. Provenance analysis of the Mesozoic Hoh-Xil-Songpan-Ganzi turbidites in northern Tibet: implications for the tectonic evolution of the eastern Paleo-Tethys Ocean. Tectonics, 32(1): 34–48, https://doi.org/10.1002/tect.20013.
Duan L, Meng Q R, Wu G L et al. 2020. Nanpanjiang Basin: a window on the tectonic development of South China during Triassic assembly of the southeastern and eastern Asia. Gondwana Research, 78: 189–209, https://doi.org/10.1016/j.gr.2019.08.009.
Eby G N. 1992. Chemical subdivision of the A-type granitoids: petrogenetic and tectonic implications. Geology, 20(7): 641–644, https://doi.org/10.1130/0091-7613(1992)020<0641:CSOTAT>2.3.CO;2.
Eby G N. 1990. The A-type granitoids: a review of their occurrence and chemical characteristics and speculations on their petrogenesis. Lithos, 26(1–2): 115–134, https://doi.org/10.1016/0024-4937(90)90043-z.
Feio G R L, Dall’Agnol R, Dantas E L et al. 2012. Geochemistry, geochronology, and origin of the Neoarchean Planalto Granite suite, Carajás, Amazonian craton: a-type or hydrated charnockitic granites? Lithos, 151: 57–73, https://doi.org/10.1016/j.lithos.2012.02.020.
Fitton J G, Saunders A D, Norry M J et al. 1997. Thermal and chemical structure of the Iceland plume. Earth and Planetary Science Letters, 153(3–4): 197–208, https://doi.org/10.1016/S0012-821X(97)00170-2.
Gao P, Zheng Y F, Zhao Z F. 2017. Triassic granites in South China: a geochemical perspective on their characteristics, petrogenesis, and tectonic significance. Earth-Science Reviews, 173: 266–294, https://doi.org/10.1016/j.earscirev.2017.07.016.
Gardien V, Thompson A B, Grujic D et al. 1995. Experimental melting of biotite+plagioclase+quartz±muscovite assemblages and implications for crustal melting. Journal of Geophysical Research: Solid Earth, 100(B8): 15581–15591, https://doi.org/10.1029/95jb00916.
Gee D G, Klonowska I, Andréasson P G et al. 2020. Middle thrust sheets in the Caledonide orogen, Sweden: the outer margin of Baltica, the continent-ocean transition zone and late Cambrian-Ordovician subduction-accretion. Geological Society, London, Memoirs, 50(1): 517–548, https://doi.org/10.1144/M50-2018-73.
Gong D X, Wu C H, Zou H et al. 2021a. Provenance analysis of Late Triassic turbidites in the eastern Songpan-Ganzi flysch complex: sedimentary record of tectonic evolution of the eastern Paleo-Tethys Ocean. Marine and Petroleum Geology, 126: 104927, https://doi.org/10.1016/j.marpetgeo.2021.104927.
Gong D X, Xiao B, Bagas L et al. 2021b. Origin of the Early to Middle Triassic polyhalite minerals in the Sichuan Basin, SW China: new evidence from calcium and sulphur isotopes and microfabrics. Ore Geology Reviews, 139: 104439, https://doi.org/10.1016/j.oregeorev.2021.104439.
Hall R. 2012. Late Jurassic-Cenozoic reconstructions of the Indonesian region and the Indian Ocean. Tectonophysics, 570–571: 1–41, https://doi.org/10.1016/j.tecto.2012.04.021.
Hara H, Hirano M, Kurihara T et al. 2018. Permian arc evolution associated with Panthalassa subduction along the eastern margin of the South China block, based on sandstone provenance and U-Pb detrital zircon ages of the Kurosegawa belt, Southwest Japan. Journal of Asian Earth Sciences, 151: 112–130, https://doi.org/10.1016/j.jseaes.2017.10.025.
Hernández-Uribe D, Palin R M, Cone K A et al. 2020. Petrological implications of seafloor hydrothermal alteration of subducted mid-ocean ridge basalt. Journal of Petrology, 61(9): egaa086, https://doi.org/10.1093/petrology/egaa086.
Holloway N H. 1981. The North Palawan block, Philippines: its relation to the Asian mainland and its role in the evolution of the South China Sea. Bulletin of the Geological Society of Malaysia, 14: 19–58, https://doi.org/10.7186/bgsm14198102.
Hong H L, Fang Q, Zhao L L et al. 2017. Weathering and alteration of volcanic ashes in various depositional settings during the Permian-Triassic transition in South China: mineralogical, elemental and isotopic approaches. Palaeogeography, Palaeoclimatology, Palaeoecology, 486: 46–57, https://doi.org/10.1016/j.palaeo.2016.12.033.
Hora J M, Singer B S, Wörner G et al. 2009. Shallow and deep crustal control on differentiation of calc-alkaline and tholeiitic magma. Earth and Planetary Science Letters, 285(1–2): 75–86, https://doi.org/10.1016/j.epsl.2009.05.042.
Hoskin P W O, Schaltegger U. 2003. The composition of zircon and igneous and metamorphic petrogenesis. Reviews in Mineralogy and Geochemistry, 53(1): 27–62, https://doi.org/10.2113/0530027.
Hou L, Xiong F H, Wang W et al. 2019. Carboniferous-Triassic felsic igneous rocks and typical mineral deposits in the Truong Son orogenic belt, SE Asia: implications for Paleo-Tethyan tectonic evolution and metallogeny. Ore Geology Reviews, 112: 103036, https://doi.org/10.1016/j.oregeorev.2019.103036.
Huang X L, Niu Y L, Xu Y G et al. 2013. Geochronology and geochemistry of Cenozoic basalts from eastern Guangdong, SE China: constraints on the lithosphere evolution beneath the northern margin of the South China Sea. Contributions to Mineralogy and Petrology, 165(3): 437–455, https://doi.org/10.1007/s00410-012-0816-7.
Ishikawa T, Tera F. 1997. Source, composition and distribution of the fluid in the Kurile mantle wedge: constraints from across-arc variations of B/Nb and B isotopes. Earth and Planetary Science Letters, 152(1–4): 123–138, https://doi.org/10.1016/S0012-821X(97)00144-1.
Iwamori H, Nakamura H. 2015. Isotopic heterogeneity of oceanic, arc and continental basalts and its implications for mantle dynamics. Gondwana Research, 27(3): 1131–1152, https://doi.org/10.1016/j.gr.2014.09.003.
Jahn B M. 2010. Accretionary orogen and evolution of the Japanese Islands: implications from a Sr–Nd isotopic study of the Phanerozoic granitoids from SW Japan. American Journal of Science, 310(10): 1210–1249, https://doi.org/10.2475/10.2010.02.
Jian X, Weislogel A, Pullen A. 2019. Triassic sedimentary filling and closure of the eastern Paleo-Tethys Ocean: new insights from detrital zircon geochronology of Songpan-Ganzi, Yidun, and West Qinling flysch in eastern Tibet. Tectonics, 38(2): 767–787, https://doi.org/10.1029/2018TC005300.
Kelley K A, Plank T, Newman S et al. 2010. Mantle melting as a function of water content beneath the Mariana Arc. Journal of Petrology, 51(8): 1711–1738, https://doi.org/10.1093/petrology/egq036.
Kong H L, Dong G C, Mo X X et al. 2012. Petrogenesis of Lincang granites in Sanjiang area of western Yunnan Province: constraints from geochemistry, zircon U–Pb geochronology and Hf isotope. Acta Petrologica Sinica, 28(5): 1438–1452, https://doi.org/CNKI:SUN:YSXB.0.2012-05-010. (in Chinese with English abstract)
Labanieh S, Chauvel C, Germa A et al. 2012. Martinique: a clear case for sediment melting and slab dehydration as a function of distance to the trench. Journal of Petrology, 53(12): 2441–2464, https://doi.org/10.1093/petrology/egs055.
Le Bas M J, Le Maitre R W, Streckeisen A et al. 1986. A chemical classification of volcanic rocks based on the total Alkali-Silica diagram. Journal of Petrology, 27(3): 745–750, https://doi.org/10.1093/petrology/27.3.745.
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(2): 226–237, https://doi.org/10.1007/BF00371463.
Li S G. 1993. Ba-Nb-Th-La diagrams used to identify tectonic environments of ophiolite. Acta Petrologica Sinica, 9(2): 146–157. (in Chinese with English abstract)
Li S M, Wang Q, Zhu D C et al. 2022. Formation of continental crust by diapiric melting of recycled crustal materials in the mantle wedge. Geophysical Research Letters, 49(15): e2021GL097515, https://doi.org/10.1029/2021GL097515.
Li S Z, Suo Y H, Li X Y et al. 2018a. Mesozoic plate subduction in West Pacific and tectono-magmatic response in the East Asian ocean-continent connection zone. Chinese Science Bulletin, 63(16): 1550–1593, https://doi.org/10.1360/N972017-01113. (in Chinese with English abstract)
Li S Z, Zang Y B, Wang P C et al. 2017. Mesozoic tectonic transition in South China and initiation of Palaeo-Pacific subduction. Earth Science Frontiers, 24(4): 213–225, https://doi.org/10.13745/j.esf.yx.2017-4-13. (in Chinese with English abstract)
Li X C, Zhou M F. 2018. The nature and origin of hydrothermal REE Mineralization in the Sin Quyen deposit, Northwestern Vietnam. Economic Geology, 113(3): 645–673, https://doi.org/10.5382/econgeo.2018.4565.
Li X C, Zhou M F, Chen W T et al. 2018b. Uranium-lead dating of hydrothermal zircon and monazite from the Sin Quyen Fe-Cu-REE-Au- (U) deposit, northwestern Vietnam. Mineralium Deposita, 53(3): 399–416, https://doi.org/10.1007/s00126-017-0746-4.
Li X H, Li Z X, He B et al. 2012. The Early Permian active continental margin and crustal growth of the Cathaysia Block: in situ U–Pb, Lu–Hf and O isotope analyses of detrital zircons. Chemical Geology, 328: 195–207, https://doi.org/10.1016/j.chemgeo.2011.10.027.
Li X H, Li W X, Li Z X et al. 2009. Amalgamation between the Yangtze and Cathaysia Blocks in South China: constraints from SHRIMP U–Pb zircon ages, geochemistry and Nd–Hf isotopes of the Shuangxiwu volcanic rocks. Precambrian Research, 174(1–2): 117–128, https://doi.org/10.1016/j.precamres.2009.07.004.
Liu H, Wang C, Deng B et al. 2019a. Geochemical characteristics and thermal evolution of Paleogene source rocks in Lunpola Basin, Tibet Plateau. Petroleum Science and Technology, 37(8): 950–961, https://doi.org/10.1080/10916466.2019.1575870.
Liu H, Wang C, Deng J H et al. 2021a. Evaluation of sedimentary features and biomarkers in the Paleogene Niubao formation in the Lunpola basin, Tibetan Plateau: implications for the oil source rocks and exploration. International Journal of Earth Sciences, 110(2): 399–417, https://doi.org/10.1007/s00531-020-01958-x.
Liu H, Wang C, Li Y et al. 2021b. Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: reconstruction of sedimentary and tectonic environments. Open Geosciences, 13(1): 166–187, https://doi.org/10.1515/geo-2020-0228.
Liu J G, Cao L, Yan W et al. 2019b. New archive of another significant potential sediment source in the South China Sea. Marine Geology, 410: 16–21, https://doi.org/10.1016/j.margeo.2019.01.003.
Liu Y, Xiao W J, Windley B F et al. 2019c. Late Triassic ridge subduction of Paleotethys: insights from high-Mg granitoids in the Songpan-Ganzi area of northern Tibet. Lithos, 334–335: 254–272, https://doi.org/10.1016/j.lithos.2019.03.012.
Liu Z S, Yan P, Liu H L. 1997. On the origin age of the Southwest Basin in the South China Sea. Chinese Journal of Oceanology and Limnology, 15(3): 285–288, https://doi.org/10.1007/BF02850886.
Luo Y, Li G, Xu W H et al. 2021. The effect of diagenesis on rare earth element geochemistry of the Quaternary carbonates at an isolated coral atoll in the South China Sea. Sedimentary Geology, 420: 105933, https://doi.org/10.1016/j.sedgeo.2021.105933.
Maniar P D, Piccoli P M. 1989. Tectonic discrimination of granitoids. Geological Society of America Bulletin, 101(5): 635–643, https://doi.org/10.1130/0016-7606(1989)101<0635:TDOG>2.3.CO;2.
Meschede M. 1986. A method of discriminating between different types of mid-ocean ridge basalts and continental tholeiites with the Nb–Zr–Y diagram. Chemical Geology, 56(3–4): 207–218, https://doi.org/10.1016/0009-2541(86)90004-5.
Miao X Q, Huang X L, Yan W et al. 2021. Late Triassic dacites from Well NK-1 in the Nansha Block: constraints on the Mesozoic tectonic evolution of the southern South China Sea margin. Lithos, 398–399: 106337, https://doi.org/10.1016/j.lithos.2021.106337.
Milani L, Lehmann J, Naydenov K V et al. 2015. A-type magmatism in a syn-collisional setting: the case of the Pan-African Hook Batholith in Central Zambia. Lithos, 216–217: 48–72, https://doi.org/10.1016/j.lithos.2014.11.029.
Miller C, Schuster R, Klötzli U et al. 1999. Post-collisional potassic and ultrapotassic magmatism in SW Tibet: geochemical and Sr–Nd–Pb–O isotopic constraints for mantle source characteristics and petrogenesis. Journal of Petrology, 40(9): 1399–1424, https://doi.org/10.1093/petroj/40.9.1399.
Müller D, Groves D I. 2000. Potassic Igneous Rocks and Associated Gold-Copper Mineralization. Springer, Berlin, Heidelberg. 297p, https://doi.org/10.2113/econgeo.111.3.796.
Nicolae I, Saccani E. 2003. Petrology and geochemistry of the Late Jurassic calc-alkaline series associated to Middle Jurassic ophiolites in the South Apuseni Mountains (Romania). Swiss Journal of Geosciences Supplement, 83(1): 81–96, https://doi.org/10.1146/annurev.ento.42.1.393.
Patiño Douce A E. 1996. Effects of pressure and H2O content on the compositions of primary crustal melts. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 87(1–2): 11–21, https://doi.org/10.1017/S026359330000643X.
Patiño Douce A E. 1997. Generation of metaluminous A-type granites by low-pressure melting of calc-alkaline granitoids. Geology, 25(8): 743–746, https://doi.org/10.1130/0091-7613(1997)025<0743:GOMATG>2.3.CO;2.
Patiño Douce A E, Beard J S. 1995. Dehydration-melting of biotite gneiss and quartz amphibolite from 3 to 15 kbar. Journal of Petrology, 36(3): 707–738, https://doi.org/10.1093/petrology/36.3.707.
Patiño Douce A E, Johnston A D. 1991. Phase equilibria and melt productivity in the politic system: implications for the origin of peraluminous granitoids and aluminous granulites. Contributions to Mineralogy and Petrology, 107(2): 202–218, https://doi.org/10.1007/BF00310707.
Pearce J A. 1982. Trace element characteristics of lavas from destructive plate boundaries. In: Thorps R S ed. Andesites. John Wiley and Sons, New York. p.525–548.
Pearce J A. 2008. Geochemical fingerprinting of oceanic basalts with applications to ophiolite classification and the search for Archean oceanic crust. Lithos, 100(1–4): 14–48, https://doi.org/10.1016/j.lithos.2007.06.016.
Pearce J A, Cann J R. 1973. Tectonic setting of basic volcanic rocks determined using trace element analyses. Earth and Planetary Science Letters, 19(2): 290–300, https://doi.org/10.1016/0012-821X(73)90129-5.
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(4): 956–983, https://doi.org/10.1093/petrology/25.4.956.
Pearce J A, Norry M J. 1979. Petrogenetic implications of Ti, Zr, Y, and Nb variations in volcanic rocks. Contributions to Mineralogy and Petrology, 69(1): 33–47, https://doi.org/10.1007/BF00375192.
Pearce J A, Stern R J, Bloomer S H et al. 2005. Geochemical mapping of the Mariana arc-basin system: implications for the nature and distribution of subduction components. Geochemistry, Geophysics, Geosystems, 6(7): Q07006, https://doi.org/10.1029/2004GC000895.
Peate D W, Pearce J A, Hawkesworth C et al. 1997. Geochemical variations in Vanuatu Arc Lavas: the role of subducted material and a variable mantle wedge composition. Journal of Petrology, 38(10): 1331–1358, https://doi.org/10.1093/petrology/38.10.1331.
Pitcher W S, Atherton M P, Cobbing E J et al. 1985. Magmatism at a Plate Edge: The Peruvian Andes. Blackie Halstead Press, Glasgow. 328p.
Rapp R P, Watson E B. 1995. Dehydration melting of metabasalt at 8–32 kbar: implications for continental growth and crust-mantle recycling. Journal of Petrology, 36(4): 891–931, https://doi.org/10.1093/petrology/36.4.891.
Raymond L A, Ogawa Y, Maddock M E. 2020. Accretionary unit formats in subduction complexes: examples from the Franciscan and Miura-Boso complexes. International Geology Review, 62(12): 1581–1609, https://doi.org/10.1080/00206814.2019.1667881.
Shao W Y, Chung S L, Chen W S et al. 2015. Old continental zircons from a young oceanic arc, eastern Taiwan: implications for Luzon subduction initiation and Asian accretionary orogeny. Geology, 43(6): 479–482, https://doi.org/10.1130/G36499.1.
Shervais J W. 1982. Ti-V plots and the petrogenesis of modern and ophiolitic lavas. Earth and Planetary Science Letters, 59(1): 101–118, https://doi.org/10.1016/0012-821X(82)90120-0.
Shi H Y, Li T L, Zhang R Z et al. 2020. Imaging of the upper mantle beneath Southeast Asia: constrained by teleseismic P-wave tomography. Remote Sensing, 12(18): 2975, https://doi.org/10.3390/rs12182975.
Shu L S, Zhu W B, Xu Z Q. 2021. Geological settings and metallogenic conditions of the granite-type lithium ore deposits in South China. Acta Geologica Sinica, 95(10): 3099–3114, https://doi.org/10.19762/j.cnki.dizhixuebao.2021152. (in Chinese with English abstract)
Singh J, Johannes W. 1996. Dehydration melting of tonalites. Part II. Composition of melts and solids. Contributions to Mineralogy and Petrology, 125(1): 26–44, https://doi.org/10.1007/s004100050204.
Skjerlie K P, Johnston A D. 1993. Fluid-absent melting behavior of an F-rich tonalitic gneiss at mid-crustal pressures: implications for the generation of anorogenic granites. Journal of Petrology, 34(4): 785–815, https://doi.org/10.1093/petrology/34.4.785.
Stevenson D S. 2018. Granite Skyscrapers: How Rock Shaped Earth and Other Worlds. Praxis Publishing, Chichester, UK. 374p, https://doi.org/10.1007/978-3-319-91503-6.
Sun K, Wu T, Liu X S et al. 2020. Lithogeochemistry of the mid-ocean ridge basalts near the Fossil Ridge of the Southwest Sub-Basin, South China Sea. Minerals, 10(5): 465, https://doi.org/10.3390/min10050465.
Sun S Q, Wang Y L, Zhang C J. 2003. Discrimination of the tectonic settings of basalts by Th, Nb and Zr. Geological Review, 49(1): 40–47, https://doi.org/10.16509/j.georeview.2003.01.006. (in Chinese with English abstract)
Sun S S, McDonough W F. 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Geological Society of London, Special Publications, 42(1): 313–345, https://doi.org/10.1144/GSL.SP.1989.042.01.19.
Sun Y, Wu T, Xiao L et al. 2019. U–Pb ages, Hf–O isotopes and trace elements of zircons from the ore-bearing and ore-barren adakitic rocks in the Handan-Xingtai district: implications for petrogenesis and iron mineralization. Ore Geology Reviews, 104: 14–25, https://doi.org/10.1016/j.oregeorev.2018.10.010.
Sylvester P J. 1998. Post-collisional strongly peraluminous granites. Lithos, 45(1–4): 29–44, https://doi.org/10.1016/S0024-4937(98)00024-3.
Taskyn A, Li J H, Li W B et al. 2014. Research on global paleo-plate reconstuction and lithofacies palaeogeography in Triassic. Marine Geology & Quaternary Geology, 34(5): 153–162, https://doi.org/10.3724/SP.J.1140.2014.05153. (in Chinese with English abstract)
Taylor S R, McLennan S M. 1985. The Continental Crust: Its Composition and Evolution. ScientificBlackwell, Oxford, London, Edinburgh, Boston, AltoPalo, Melbourne. 312p.
Tollan P, Hermann J. 2019. Arc magmas oxidized by water dissociation and hydrogen incorporation in orthopyroxene. Nature Geoscience, 12(8): 667–671, https://doi.org/10.1038/s41561-019-0411-x.
Turner S P, George R M M, Evans P J et al. 2000. Time-scales of magma formation, ascent and storage beneath subduction-zone volcanoes. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 358(1770): 1443–1464, https://doi.org/10.1098/rsta.2000.0598.
Valentine G A, Graettinger A H, Sonder I. 2014. Explosion depths for phreatomagmatic eruptions. Geophysical Research Letters, 41(9): 3045–3051, https://doi.org/10.1007/s00445-017-1177-x.
Wang C, Liu H, Deng J H et al. 2018. Isotope geochronologic and geochemical constraints on the magmatic associations of the collisional orogenic zone in the west Kunlun Orogen, China. Acta Geologica Sinica (English Edition), 92(2): 482–498, https://doi.org/10.1111/1755-6724.13538.
Wang C, Liu H, Feng H B et al. 2019. Geochemistry and U–Pb ages of the diabases from the Luoji area, western Yunnan, China: implications for the timing of the initial rifting of the Ganzi-Litang Ocean. Geologia Croatica, 72: 19–32, https://doi.org/10.4154/gc.2019.25.
Wang J, Li Z X. 2001. Sequence stratigraphy and evolution of the Neoproterozoic marginal basins along southeastern Yangtze Craton, South China. Gondwana Research, 4(1): 17–26, https://doi.org/10.1016/S1342-937X(05)70651-1.
Wang J, Li Z X. 2003. History of Neoproterozoic rift basins in South China: implications for Rodinia break-up. Precambrian Research, 122(1–4): 141–158, https://doi.org/10.1016/S0301-9268(02)00209-7.
Wang K, Plank T, Walker J D et al. 2002. A mantle melting profile across the Basin and Range, SW USA. Journal of Geophysical Research: Solid Earth, 107(B1): ECV5-1–ECV5-21, https://doi.org/10.1029/2001jb000209.
Wang W L, Dong D D, Wang X J et al. 2021. Three-stage tectonic subsidence and its implications for the evolution of conjugate margins of the southwest subbasin, South China Sea. Journal of Oceanology and Limnology, 39(5): 1854–1870, https://doi.org/10.1007/s00343-020-0259-3.
Wei W, Liu C Z, Hou Y F et al. 2022. Discovery of a hidden Triassic arc in the Southern South China Sea: evidence for the breakaway of a ribbon continent with implications for the evolution of the Western Pacific margin. Terra Nova, 34(1): 12–19, https://doi.org/10.1111/ter.12556.
Whalen J B, Currie K L, Chappell B W. 1987. A-type granites: geochemical characteristics, discrimination and petrogenesis. Contributions to Mineralogy and Petrology, 95(4): 407–419, https://doi.org/10.1007/BF00402202.
Winchester J A, Floyd P A. 1977. Geochemical discrimination of different magma series and their differentiation products using immobile elements. Chemical Geology, 20: 325–343, https://doi.org/10.1016/0009-2541(77)90057-2.
Wood D A. 1980. The application of a Th–Hf–Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the British Tertiary Volcanic Province. Earth and Planetary Science Letters, 50(1): 11–30, https://doi.org/10.1016/0012-821x(80)90116-8.
Wu J, Suppe J. 2018. Proto-South China Sea Plate tectonics using subducted slab constraints from tomography. Journal of Earth Science, 29(6): 1304–1318, https://doi.org/10.1007/s12583-017-0813-x.
Wu L N, Wang Z C, Wang Y L. 2003. On the application of La, Nb and Zr in identifying the tectonic settings. Journal of East China Geological Institute, 26(4): 343–348, https://doi.org/CNKI:SUN:HDDZ.0.2003-04-006. (in Chinese with English abstract)
Wu T, Wang X C, Li W X et al. 2019. Petrogenesis of the ca. 820–810 Ma felsic volcanic rocks in the Bikou Group: implications for the tectonic setting of the western margin of the Yangtze Block. Precambrian Research, 331: 105370, https://doi.org/10.1016/j.precamres.2019.105370.
Xie G Q, Mao J W, Zhang C Q et al. 2021. Triassic deposits in South China: geological characteristics, ore-forming mechanism and ore deposit model. Earth Science Frontiers, 28(3): 252–270, https://doi.org/10.13745/j.esf.sf.2021.1.26. (in Chinese with English abstract)
Xu C H, Zhang L, Shi H S et al. 2017. Tracing an early Jurassic magmatic arc from South to East China Seas. Tectonics, 36(3): 466–492, https://doi.org/10.1002/2016TC004446.
Xu W C, Luo B J, Xu Y J et al. 2018. Geochronology, geochemistry, and petrogenesis of late Permian to early Triassic mafic rocks from Darongshan, South China: implications for ultrahigh-temperature metamorphism and S-type granite generation. Lithos, 308–309: 168–180, https://doi.org/10.1016/j.lithos.2018.03.004.
Xu W H, Lin T, Hu Z H et al. 2012. Environmental exposure and ecological risk of heavy metals in fishing harbors of the Pearl River Delta, South China. Aquatic Ecosystem Health & Management, 15(2): 192–199, https://doi.org/10.1080/14634988.2012.688484.
Yan Q S, Metcalfe I, Shi X F. 2017. U–Pb isotope geochronology and geochemistry of granites from Hainan Island (northern South China Sea margin): constraints on late Paleozoic-Mesozoic tectonic evolution. Gondwana Research, 49: 333–349, https://doi.org/10.1016/j.gr.2017.06.007.
Yan Q S, Shi X F, Li N S. 2011. Oxygen and lead isotope characteristics of granitic rocks from the Nansha block (South China Sea): implications for their petrogenesis and tectonic affinity. Island Arc, 20(2): 150–159, https://doi.org/10.1111/j.1440-1738.2010.00754.x.
Yan Z Y, Chen L, Xiong X et al. 2020. Observations and modeling of flat subduction and its geological effects. Science China Earth Sciences, 63(8): 1069–1091, https://doi.org/10.1007/s11430-019-9575-2.
Yang J H, Zhang J H, Chen J Y et al. 2021. Mesozoic continental crustal rejuvenation of South China: insights from zircon Hf–O isotopes of early Jurassic gabbros, syenites and A-type granites. Lithos, 402–403: 105678, https://doi.org/10.1016/j.lithos.2020.105678.
Yang W R, Zheng J D. 2002. Panorama on theory opening-closing tectonics of China. Geological Science and Technology Information, 21(4): 31–34, https://doi.org/10.3969/j.issn.1000-7849.2002.04.007. (in Chinese with English abstract)
Yi L, Deng C L, Yan W et al. 2021. Neogene-Quaternary magnetostratigraphy of the biogenic reef sequence of core NK-1 in Nansha Qundao, South China Sea. Science Bulletin, 66(3): 200–203, https://doi.org/10.1016/j.scib.2020.08.014.
Yu Y, Huang X L, Sun M et al. 2020. Missing Sr–Nd isotopic decoupling in subduction zone: decoding the multi-stage dehydration and melting of subducted slab in the Chinese Altai. Lithos, 362–363: 105465, https://doi.org/10.1016/j.lithos.2020.105465.
Zartman R E, Haines S M. 1988. The plumbotectonic model for Pb isotopic systematics among major terrestrial reservoirs-a case for bidirectional transport. Geochimica et Cosmochimica Acta, 52(6): 1327–1339, https://doi.org/10.1016/0016-7037(88)90204-9.
Zhang G J, Zhang X L, Zhou C Y et al. 2021. A new high-resolution δ13Ccarb record for the Early-Middle Triassic: insights from the Tianshengqiao section, South China. Journal of University of Science and Technology of China, 51(6): 459–467, https://doi.org/10.52396/JUST-2021-0128.
Zhang Q, Jin W J, Li C D et al. 2010. Revisiting the new classification of granitic rocks based on whole-rock Sr and Yb contents. Acta Petrologica Sinica, 26(4): 985–1015, https://doi.org/CNKI:SUN:YSXB.0.2010-12-002.
Zhang X J, Takeuchi M, Ohkawa M et al. 2018. Provenance of a Permian accretionary complex (Nishiki Group) of the Akiyoshi Belt in southwest Japan and paleogeographic implications. Journal of Asian Earth Sciences, 167: 130–138, https://doi.org/10.1016/j.jseaes.2018.01.005.
Zhao D P, Maruyama S, Omori S. 2007. Mantle dynamics of Western Pacific and East Asia: insight from seismic tomography and mineral physics. Gondwana Research, 11(1–2): 120–131, https://doi.org/10.1016/j.gr.2006.06.006.
Zhao L, Guo F, Fan W M et al. 2016. Early Cretaceous potassic volcanic rocks in the Jiangnan Orogenic Belt, East China: crustal melting in response to subduction of the Pacific-Izanagi ridge? Chemical Geology, 437: 30–43, https://doi.org/10.1016/j.chemgeo.2016.05.011.
Zhu H L, Du L, Zhang Z F et al. 2020. Calcium isotopic signatures of depleted mid-ocean ridge basalts from the northeastern Pacific. Journal of Oceanology and Limnology, 38(5): 1476–1487, https://doi.org/10.1007/s00343-020-0045-2.
Zimmer M M, Plank T, Hauri E H et al. 2010. The role of water in generating the calc-alkaline trend: new volatile data for Aleutian magmas and a new tholeiitic index. Journal of Petrology, 51(12): 2411–2444, https://doi.org/10.1093/petrology/egq062.
Zindler A, Hart S. 1986. Chemical geodynamics. Annual Review of Earth and Planetary Sciences, 14: 493–571, https://doi.org/10.1146/annurev.ea.14.050186.002425.
Zou H, Bagas L, Li X Y et al. 2020. Origin and evolution of the neoproterozoic dengganping granitic complex in the western margin of the Yangtze Block, SW China: implications for breakup of Rodina Supercontinent. Lithos, 370–371: 105602, https://doi.org/10.1016/j.lithos.2020.105602.
Zou H, Li Q L, Bagas L et al. 2021. A Neoproterozoic low-δ18O magmatic ring around South China: implications for configuration and breakup of Rodinia supercontinent. Earth and Planetary Science Letters, 575: 117196, https://doi.org/10.1016/j.epsl.2021.117196.
Acknowledgment
We thank Xiuquan MIAO from Guangzhou Institute of Geochemistry, Chinese Academy of Sciences and Wu WEI from Institute of Geology and Geophysics, Chinese Academy of Sciences for their collaboration with our team and for their data contribution. We also thank Jianghong DENG and Bin DENG from Chengdu University of Technology for their help and advice in petrology and petrography. We are grateful to the Well NK-1 research team of the Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, for providing the core samples.
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Supported by the National Natural Science Foundation of China (No. 42206073), the National Key R&D Program of China (No. 2021YFC3100600), the Guangdong Basic and Applied Basic Research Foundation (No. 2021A1515110782), the China Post-doctoral Science Foundation (No. 2021M703296), the Open Fund of the Key Laboratory of Tectonic Controlled Mineralization and Oil Reservoir of the Ministry of Natural Resources (No. gzck202101), the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) (No. GML2019ZD0206), and the K. C. Wong Education Foundation (No. GJTD-2018-13)
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Wang, C., Liu, H., Li, G. et al. Magmatic-tectonic response of the South China Craton to the Paleo-Pacific subduction during the Triassic: a new viewpoint based on Well NK-1. J. Ocean. Limnol. 42, 58–89 (2024). https://doi.org/10.1007/s00343-023-2347-7
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DOI: https://doi.org/10.1007/s00343-023-2347-7