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Triassic calc-alkaline lamprophyre dykes from the North Qiangtang, central Tibetan Plateau: evidence for a subduction-modified lithospheric mantle

Published online by Cambridge University Press:  24 November 2021

Bin Liu*
Affiliation:
School of Geosciences, Yangtze University, Daxue Road 111, Wuhan 430100, China State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Fuxue Road 18, Beijing 102249, China
You-Jun Tang
Affiliation:
College of Resources and Environment, Yangtze University, Daxue Road 111, Wuhan 430100, China
Lü-Ya Xing
Affiliation:
College of Resources and Environment, Yangtze University, Daxue Road 111, Wuhan 430100, China
Yu Xu
Affiliation:
School of Geosciences, Yangtze University, Daxue Road 111, Wuhan 430100, China State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Fuxue Road 18, Beijing 102249, China
Shao-Qing Zhao
Affiliation:
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Fuxue Road 18, Beijing 102249, China State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Lumo Road 388, Wuhan 430074, China
Yang Sun
Affiliation:
School of Geosciences, Yangtze University, Daxue Road 111, Wuhan 430100, China State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Fuxue Road 18, Beijing 102249, China
Jian Huang
Affiliation:
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Lumo Road 388, Wuhan 430074, China
*
Author for correspondence: Bin Liu, Email: binliu@yangtzeu.edu.cn

Abstract

Primitive lamprophyres in orogenic belts can provide crucial insights into the nature of the subcontinental lithosphere and the relevant deep crust–mantle interactions. This paper reports a suite of relatively primitive lamprophyre dykes from the North Qiangtang, central Tibetan Plateau. Zircon U–Pb ages of the lamprophyre dykes range from 214 Ma to 218 Ma, with a weighted mean age of 216 ± 1 Ma. Most of the lamprophyre samples are similar in geochemical compositions to typical primitive magmas (e.g. high MgO contents, Mg no. values and Cr, with low FeOt/MgO ratios), although they might have experienced a slightly low degree of olivine crystallization, and they show arc-like trace-element patterns and enriched Sr–Nd isotopic composition ((87Sr/86Sr)i = 0.70538–0.70540, ϵNd(t) = −2.96 to −1.65). Those geochemical and isotopic variations indicate that the lamprophyre dykes originated from partial melting of a phlogopite- and spinel-bearing peridotite mantle modified by subduction-related aqueous fluids. Combining with the other regional studies, we propose that slab subduction might have occurred during Late Triassic time, and the rollback of the oceanic lithosphere induced the lamprophyre magmatism in the central Tibetan Plateau.

Type
Original Article
Copyright
© The Author(s), 2021. Published by Cambridge University Press

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References

Abdelfadil, KM, Romer, RL, Seifert, T and Lobst, R (2013) Calc-alkaline lamprophyres from Lusatia (Germany)—Evidence for a repeatedly enriched mantle source. Chemical Geology 353, 230–45.CrossRefGoogle Scholar
Aghazadeh, M, Prelević, D, Badrzadeh, Z, Braschi, E, van den Bogaard, P and Conticelli, S (2015) Geochemistry, Sr–Nd–Pb isotopes and geochronology of amphibole- and mica-bearing lamprophyres in northwestern Iran: Implications for mantle wedge heterogeneity in a palaeo-subduction zone. Lithos 216–217, 352–69.CrossRefGoogle Scholar
Agrawal, S, Guevara, M and Verma, SP (2008) Tectonic discrimination of basic and ultrabasic volcanic rocks through log-transformed ratios of immobile trace elements. International Geology Review 50, 1057–79.CrossRefGoogle Scholar
Dan, W, Wang, Q, White, WM, Zhang, X, Tang, G, Jiang, Z, Hao, L and Ou, Q (2018) Rapid formation of eclogites during a nearly closed ocean: revisiting the Pianshishan eclogite in Qiangtang, central Tibetan Plateau. Chemical Geology 477, 112–22.CrossRefGoogle Scholar
DePaolo, DJ (1981) Trace element and isotopic effects of combined wallrock assimilation and fractional crystallization. Earth and Planetary Science Letters 53, 189202.CrossRefGoogle Scholar
Ding, L, Yang, D, Cai, FL, Pullen, A, Kapp, P, Gehrels, GE, Zhang, LY, Zhang, QH, Lai, QZ, Yue, YH and Shi, RD (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, 3448.CrossRefGoogle Scholar
Duan, QF, Wang, JX, Bai, YS, Yao, HZ, He, LQ, Zhang, KX, Kou, XH and Li, J (2009) Zircon SHRIMP U-Pb dating and lithogeochemistry of gabbro from the ophiolite in southern Qinghai Province. Geology in China 36, 291–99.Google Scholar
Duggen, S, Hoernle, K, Van Den Bogaard, P and Garbe-Schönberg, D (2005) Post-collisional transition from subduction- to intraplate-type magmatism in the westernmost Mediterranean: evidence for continental-edge delamination of subcontinental lithosphere. Journal of Petrology 46, 1155–201.CrossRefGoogle Scholar
Furman, T and Graham, D (1999) Erosion of lithospheric mantle beneath the East African Rift system: geochemical evidence from the Kivu volcanic province. Lithos 48, 237–62.CrossRefGoogle Scholar
Gao, S, Rudnick, RL, Yuan, HL, Liu, XM, Liu, YS, Xu, WL, Ayers, J, Wang, XC and Wang, QH (2004) Recycling lower continental crust in the North China craton. Nature 432, 892–7.CrossRefGoogle ScholarPubMed
Halama, R, Marks, M, Brügmann, G, Siebel, W, Wenzel, T and Markl, G (2004) Crustal contamination of mafic magmas: evidence from a petrological, geochemical and Sr-Nd-Os-O isotopic study of the Proterozoic Isortoq dike swarm, South Greenland. Lithos 74, 199232.CrossRefGoogle Scholar
Hanyu, T, Tatsumi, Y, Nakai, S, Chang, Q, Miyazaki, T, Sato, K, Tani, K, Shibata, T and Yoshida, T (2006) Contribution of slab melting and slab dehydration to magmatism in the NE Japan arc for the last 25 Myr: Constraints from geochemistry. Geochemistry, Geophysics, Geosystems 7, https://doi.org/10.1029/2005GC001220.CrossRefGoogle Scholar
He, SP, Li, RS, Wang, C, Gu, PY, Yu, PS, Shi, C and Cha, XF (2013) Research on the formation age of the Ningduo rock group in Chandu block: Evidence for the existence of basement in the North Qiangtang. Earth Science Frontiers 20, 1524.Google Scholar
He, S, Li, R, Wang, C, Zhang, H, Ji, W, Yu, P, Gu, P and Shi, C (2011) Discovery of ∼4.0 Ga detrital zircons in the Changdu Block, North Qiangtang, Tibetan Plateau. Chinese Science Bulletin 56, 647–58.CrossRefGoogle Scholar
Kapp, P, Yin, A, Manning, CE, Harrison, TM, Taylor, MH and Ding, L (2003) Tectonic evolution of the early Mesozoic blueschist-bearing Qiangtang metamorphic belt, central Tibet. Tectonics 22, 17.1–17.22.CrossRefGoogle Scholar
Karsli, O, Dokuz, A, Kaliwoda, M, Uysal, I, Aydin, F, Kandemir, R and Fehr, K (2014) Geochemical fingerprints of Late Triassic calc-alkaline lamprophyres from the Eastern Pontides, NE Turkey: A key to understanding lamprophyre formation in a subduction-related environment. Lithos 196–197, 181–97.CrossRefGoogle Scholar
Kepezhinskas, P, Defant, MJ and Drummond, MS (1996) Progressive enrichment of island arc mantle by melt-peridotite interaction inferred from Kamchatka xenoliths. Geochimica et Cosmochimica Acta 60, 1217–29.CrossRefGoogle Scholar
Le Roux, V, Lee, CTA and Turner, SJ (2010) Zn/Fe systematics in mafic and ultramafic systems: implications for detecting major element heterogeneities in the Earth’s mantle. Geochimica et Cosmochimica Acta 74, 2779–96.CrossRefGoogle Scholar
Leat, PT, Riley, TR, Wareham, CD, Millar, IL, Kelley, SP and Storey, BC (2002) Tectonic setting of primitive magmas in volcanic arcs: an example from the Antarctic Peninsula. Journal of the Geological Society 159, 3144.CrossRefGoogle Scholar
Li, C, Zhai, QG, Dong, YP, Zeng, QG and Huang, XP (2007) Longmu Co-Shuanghu plate suture and evolution records of paleo-Tethyan oceanic in Qiangtang area, Qinghai-Tibet plateau. Frontiers in Earth Science China 1, 257–64.CrossRefGoogle Scholar
Liu, B, Ma, CQ, Huang, J, Xiong, FH, Zhang, X and Guo, YH (2016a) Petrogenetic mechanism and tectonic significance of Triassic Yushu volcanic rocks in the northern part of the North Qiangtang Terrane. Acta Petrologica et Mineralogica 35, 115.Google Scholar
Liu, B, Ma, C, Guo, Y, Xiong, F, Guo, P and Zhang, X (2016b) Petrogenesis and tectonic implications of Triassic mafic complexes with MORB/OIB affinities from the western Garzê-Litang ophiolitic mélange, central Tibetan Plateau. Lithos 260, 253–67.CrossRefGoogle Scholar
Liu, B, Xu, Y, Li, Q, Sun, Y, Zhao, S Q, Huang, J, Dong, H and Rong, Y (2020) Origin of Triassic mafic magmatism in the North Qiangtang terrane, central Tibetan Plateau: implications for the development of a continental back-arc basin. Journal of the Geological Society 177, 826–42.CrossRefGoogle Scholar
Liu, Y, Gao, S, Hu, Z, Gao, C, Zong, K and Wang, D (2010) Continental and Oceanic crust recycling-induced melt-peridotite interactions in the trans-North China Orogen: U-Pb dating, Hf isotopes and trace elements in Zircons from Mantle Xenoliths. Journal of Petrology 51, 537–71.CrossRefGoogle Scholar
Liu, Y, Tan, J, Wei, J, Zhao, S, Liu, X, Gan, J and Wang, Z (2019) Sources and petrogenesis of Late Triassic Zhiduo volcanics in the northeast Tibet: Implications for tectonic evolution of the western Jinsha Paleo-Tethys Ocean. Lithos 336–337, 169–82.CrossRefGoogle Scholar
Liu, YS, Hu, ZC, Gao, S, Günther, D, Xu, J, Gao, CG and Chen, HH (2008) In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard. Chemical Geology 257, 3443.CrossRefGoogle Scholar
Ma, L, Jiang, S, Hou, M, Dai, B, Jiang, Y, Yang, T, Zhao, K, Pu, W, Zhu, Z and Xu, B (2014) Geochemistry of Early Cretaceous calc-alkaline lamprophyres in the Jiaodong Peninsula: implication for lithospheric evolution of the eastern North China Craton. Gondwana Research 25, 859–72.CrossRefGoogle Scholar
McKenzie, D and Bickle, MJ (1988) The volume and composition of melt generated by extension of the lithosphere. Journal of Petrology 29, 625–79.CrossRefGoogle Scholar
Metcalfe, I (2013) Gondwana dispersion and Asian accretion: tectonic and palaeogeographic evolution of eastern Tethys. Journal of Asian Earth Sciences 66, 133.CrossRefGoogle Scholar
Mullen, EK, Weis, D, Marsh, NB and Martindale, M (2017) Primitive arc magma diversity: new geochemical insights in the Cascade Arc. Chemical Geology 448, 4370.CrossRefGoogle Scholar
Murray, K, Ducea, MN and Schoenbohm, L (2015) Foundering-driven lithospheric melting: the source of central Andean mafic lavas on the Puna Plateau (22°S–27°S). Geological Society of America, Memoirs 212, 139–66.Google Scholar
Naumann, TR and Geist, DJ (1999) Generation of alkalic basalt by crystal fractionation of tholeiitic magma. Geology 27, 423.2.3.CO;2>CrossRefGoogle Scholar
Pearce, JA (1982) Trace element characteristics of lavas from destructive plate boundaries. In Andesites: Orogenic Andesites and Related Rocks (ed Thorpe, RS), pp. 525–48. Chichester: John Wiley and Sons.Google Scholar
Pearce, JA (2014) Immobile element fingerprinting of ophiolites. Elements 10, 101–8.CrossRefGoogle Scholar
Peng, T, Zhao, G, Fan, W, Peng, B and Mao, Y (2015) Late Triassic granitic magmatism in the Eastern Qiangtang, Eastern Tibetan Plateau: Geochronology, petrogenesis and implications for the tectonic evolution of the Paleo-Tethys. Gondwana Research 27, 1494–508.CrossRefGoogle Scholar
Pilet, S, Baker, MB, Müntener, O and Stolper, EM (2011) Monte Carlo simulations of metasomatic enrichment in the lithosphere and implications for the source of alkaline basalts. Journal of Petrology 52, 1415–42.CrossRefGoogle Scholar
Polat, A and Hofmann, AW (2003) Alteration and geochemical patterns in the 3.7–3.8 Ga Isua greenstone belt, West Greenland. Precambrian Research 126, 197218.CrossRefGoogle Scholar
Pullen, A, Kapp, P, Gehrels, GE, Vervoort, JD and Ding, L (2008) Triassic continental subduction in central Tibet and Mediterranean-style closure of the Paleo-Tethys Ocean. Geology 36, 351–4.CrossRefGoogle Scholar
Rock, NMS (1991) Lamprophyres. London: Blackie and Son Ltd., Glasgow.Google Scholar
Rogers, G and Hawkesworth, CJ (1989) A geochemical traverse across the North Chilean Andes: evidence for crust generation from the mantle wedge. Earth and Planetary Science Letters 91, 271–85.CrossRefGoogle Scholar
Sajona, FG, Maury, RC, Pubellier, M, Leterrier, J, Bellon, H and Cotten, J (2000) Magmatic source enrichment by slab-derived melts in a young post-collision setting, central Mindanao (Philippines). Lithos 54, 173206.CrossRefGoogle Scholar
Saunders, AD, Storey, M, Kent, RW and Norry, MJ (1992) Consequences of plume-lithosphere interactions. In Magmatism and the Causes of Continental Break-up (eds Storey, BC, Alabaster, T and Pankhurst, RJ), pp. 4160. Geological Society of London, Special Publication no. 68.Google Scholar
Song, P, Ding, L, Li, Z, Lippert, PC, Yang, T, Zhao, X, Fu, J and Yue, Y (2015) Late Triassic paleolatitude of the Qiangtang block: implications for the closure of the Paleo-Tethys Ocean. Earth and Planetary Science Letters 424, 6983.CrossRefGoogle Scholar
Sun, SS and McDonough, WF (1989) Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In Magmatism in the Ocean Basins (eds Saunders, AD and Norry, MJ), pp 313–45. Geological Society of London, Special Publication no. 42.Google Scholar
Tan, J, Wei, J, Zhao, S, Li, Y, Liu, Y, Liu, X, Zhang, F, Gan, J and Wang, Z (2019) Petrogenesis of Late Triassic high-Mg diorites and associated granitoids with implications for Paleo-Tethys evolution in the northeast Tibetan Plateau. GSA Bulletin 132, 955–76.CrossRefGoogle Scholar
Tao, Y, Bi, X, Li, C, Hu, R, Li, Y and Liao, M (2014) Geochronology, petrogenesis and tectonic significance of the Jitang granitic pluton in eastern Tibet, SW China. Lithos 184–187, 314–23.CrossRefGoogle Scholar
Tatsumi, Y and Eggins, S (1995) Subduction Zone Magmatism. Cambridge: Blackwell Science.Google Scholar
Taylor, SR and McLennan, SM (1985) The Continental Crust: Its Composition and Evolution. Oxford: Blackwell Scientific Publications.Google Scholar
Wang, H, Wu, Y, Qin, Z, Zhu, L, Liu, Q, Liu, X, Gao, S, Wijbrans, JR, Zhou, L, Gong, H and Yuan, H (2013) Age and geochemistry of Silurian gabbroic rocks in the Tongbai orogen, central China: Implications for the geodynamic evolution of the North Qinling arc–back-arc system. Lithos 179, 115.CrossRefGoogle Scholar
Wang, K, Plank, T, Walker, JD and Smith, EI (2002) A mantle melting profile across the Basin and Range, SW USA. Journal of Geophysical Research: Solid Earth 107, ECV5-1–ECV5-21.CrossRefGoogle Scholar
Wang, Q, Wyman, DA, Xu, JF, Wan, YS, Li, C, Zi, F, Jiang, Z, Qiu, H, Chu, Z, Zhao, Z and Dong, Y (2008) Triassic Nb-enriched basalts, magnesian andesites, and adakites of the Qiangtang terrane (Central Tibet): evidence for metasomatism by slab-derived melts in the mantle wedge. Contributions to Mineralogy and Petrology 155, 473–90.CrossRefGoogle Scholar
Wang, Q, Zhao, ZH, Bai, ZH, Bao, ZW, Xiong, XL, Mei, HJ, Xu, JF and Wang, YX (2003) Carboniferous adakites and Nb-enriched arc basaltic rocks association in the Alataw Mountains, north Xinjiang: interactions between slab melt and mantle peridotite and implications for crustal growth. Chinese Science Bulletin 48, 2108–15.CrossRefGoogle Scholar
Winchester, JA and Floyd, PA (1977) Geochemical discrimination of different magma series and their differentiation products using immobile elements. Chemical Geology 20, 325–43.CrossRefGoogle Scholar
Wood, DA (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, 1130.CrossRefGoogle Scholar
Woodhead, JD, Hergt, JM, Davidson, JP and Eggins, SM (2001) Hafnium isotope evidence for ‘conservative’ element mobility during subduction zone processes. Earth and Planetary Science Letters 192, 331–46.CrossRefGoogle Scholar
Xu, W, Liu, F and Dong, Y (2020) Cambrian to Triassic geodynamic evolution of central Qiangtang, Tibet. Earth-Science Reviews 201, 103083.CrossRefGoogle Scholar
Xu, Z, Dilek, Y, Cao, H, Yang, J, Robinson, P, Ma, C, Li, H, Jolivet, M, Roger, F and Chen, X (2015) Paleo-Tethyan evolution of Tibet as recorded in the East Cimmerides and West Cathaysides. Journal of Asian Earth Sciences 105, 320–37.CrossRefGoogle Scholar
Yan, QR, Wang, ZQ, Liu, SW, Li, QG, Zhang, HY, Wang, T, Liu, DY, Shi, YR, Jian, P, Wang, JG, Zhang, DH and Zhao, J (2005) Opening of Tethys in southwest China and its signifi cance to the breakup of East Gondwanaland in the late Paleozoic, evidence from SHRIMP U-Pb zircon analyses for the Garzê ophiolite block. Chinese Science Bulletin 50, 158–66.CrossRefGoogle Scholar
Yang, K, Liu, B, Ma, CQ, Sun, Y, Zhang, F, Mou, JZ, He, Y and Xiao, L (2020) Petrogenesis and geodynamic setting of Triassic pyroxene diorite-porphyrite from the North Qiangtang Terrane: geochronology, mineral petrogeochemistry and Sr-Nd-Hf isotope constraints. Earth Science 45, 1490–502.Google Scholar
Yang, TN, Hou, ZQ, Wang, Y, Zhang, HR and Wang, ZL (2012) Late Paleozoic to Early Mesozoic tectonic evolution of northeast Tibet: evidence from the Triassic composite western Jinsha-Garzê-Litang suture. Tectonics 31, 120.CrossRefGoogle Scholar
Yang, TN, Zhang, HR, Liu, YX, Wang, ZL, Song, YC, Yang, ZS, Tian, SH, Xie, HQ and Hou, KJ (2011) Permo-Triassic arc magmatism in central Tibet: evidence from zircon U–Pb geochronology, Hf isotopes, rare earth elements, and bulk geochemistry. Chemical Geology 3–4, 270–82.CrossRefGoogle Scholar
Yuan, C, Zhou, MF, Sun, M, Zhao, YJ, Wilde, S, Long, X and Yan, D (2010) Triassic granitoids in the eastern Songpan Ganzi Fold Belt, SW China: magmatic response to geodynamics of the deep lithosphere. Earth and Planetary Science Letters 290, 481–92.CrossRefGoogle Scholar
Zhai, QG, Zhang, RY, Jahn, BM, Li, C, Song, S and Wang, J (2011) Triassic eclogites from central Qiangtang, northern Tibet, China: petrology, geochronology and metamorphic P–T path. Lithos 125, 173–89.CrossRefGoogle Scholar
Zhang, HF, Parrish, R, Zhang, L, Xu, WC, Yuan, H, Gao, S and Crowley, QG (2007) A-type granite and adakitic magmatism association in Songpan–Garze fold belt, eastern Tibetan Plateau: implication for lithospheric delamination. Lithos 97, 323–35.CrossRefGoogle Scholar
Zhang, HR, Yang, TN, Hou, ZQ, Song, YC, Chen, X F, Ding, Y, Chen, W and Hou, KJ (2013) Chronology and geochemistry of mylonitic quartz diorites in the Yushu melange, central Tibet. Acta Petrologica Sinica 29, 3871–82.Google Scholar
Zhang, LY, Ding, L, Pullen, A, Xu, Q, Liu, DL, Cai, F, Yue, Y, Lai, Q, Shi, R, Ducea, MN, Knapp, P and Chapman, A (2014) Age and geochemistry of western Hoh-Xil-Songpan-Ganzi granitoids, northern Tibet: Implications for the Mesozoic closure of the Paleo-Tethys ocean. Lithos 190–191, 328–48.CrossRefGoogle Scholar
Zhang, N, Li, JB, Yang, YS and Na, FC (2012) Petrogeochemical characteristics and tectonic setting of the Wandaohu ophiolite melange, Jinshajiang suture, Tibet. Acta Petrologica Sinica 28, 1291–304.Google Scholar
Zhang, Y and Zhang, K (2017) Early Permian Qiangtang flood basalts, northern Tibet, China: a mantle plume that disintegrated northern Gondwana? Gondwana Research 44, 96108.CrossRefGoogle Scholar
Zhao, SQ, Fu, LB, Wei, JH, Tan, J, Wang, XC, Zhao, ZX and Li, X (2015) Petrogenesis and geodynamic setting of Late Triassic quartz diorites in Zhiduo area, Qinghai province. Earth Science-Journal of the China University of Geosciences 40, 6176.Google Scholar
Zhao, SQ, Tan, J, Wei, JH, Tian, N, Zhang, DH, Liang, SN and Chen, JJ (2014) Late Triassic Batang Group arc volcanic rocks in the northeastern margin of Qiangtang terrane, northern Tibet: partial melting of juvenile crust and implications for Paleo-Tethys ocean subduction. International Journal of Earth Sciences 104, 369–87.CrossRefGoogle Scholar
Zhao, Z, Dai, L and Zheng, Y (2013) Postcollisional mafic igneous rocks record crust-mantle interaction during continental deep subduction. Scientific Reports 3, https://doi.org/10.1038/srep03413.CrossRefGoogle ScholarPubMed
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