Volume 25 Issue 5
Oct.  2019
Turn off MathJax
Article Contents
Article Navigation >  Journal of Geomechanics  > 2019  >  25(5): 932-946
LI Zhenglin, LIU Xijun, XIAO Wenjiao, et al., 2019. GEOCHRONOLOGY, GEOCHEMISTRY AND HF ISOTOPES OF VOLCANIC ROCKS IN PINGXIANG AREA, SOUTHWEST GUANGXI: IMPLICATIONS FOR THE LATEST STAGE OF PALEO-TETHYAN OCEAN NORTHWARD SUBDUCTION. Journal of Geomechanics, 25 (5): 932-946. DOI: 10.12090/j.issn.1006-6616.2019.25.05.076
Citation: LI Zhenglin, LIU Xijun, XIAO Wenjiao, et al., 2019. GEOCHRONOLOGY, GEOCHEMISTRY AND HF ISOTOPES OF VOLCANIC ROCKS IN PINGXIANG AREA, SOUTHWEST GUANGXI: IMPLICATIONS FOR THE LATEST STAGE OF PALEO-TETHYAN OCEAN NORTHWARD SUBDUCTION. Journal of Geomechanics, 25 (5): 932-946. DOI: 10.12090/j.issn.1006-6616.2019.25.05.076
shu

GEOCHRONOLOGY, GEOCHEMISTRY AND HF ISOTOPES OF VOLCANIC ROCKS IN PINGXIANG AREA, SOUTHWEST GUANGXI: IMPLICATIONS FOR THE LATEST STAGE OF PALEO-TETHYAN OCEAN NORTHWARD SUBDUCTION

doi: 10.12090/j.issn.1006-6616.2019.25.05.076
  • 1.

    Guangxi Hidden Mineral Exploration Center, College of Earth Sciences, Guilin University of Technology, Guilin 541004, Guangxi, China

  • 2.

    Xinjiang Research Center for Mineral Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China

More Information
  • Received: 2019-08-20
  • Revised: 2019-10-01
  • Published: 2019-10-31
    Abstract
  • Pingxiang area located in the southwest margin of Souch China Block (SCB) and north side of the collision zone between the South China and Indochina plate, tectonically belongs to the eastern part of the Tethyan tectonic domain. The Triassic intermediate-acid volcanics exposed in the Pingxiang area are continental arcs formed during the subduction of the Paleo-Tethysan ocean. They carried a large number of captured zircons sourced from the basement of SCB, which provided important information for the tectono-thermal events in SCB. In this paper, the geochronology, geochemistry and zircon Hf isotope studies were carried out on the dacites from Triassic Beisi Formation in Pingxiang area, and a weighted average age yeild 227.8±1.3 Ma from one dacite sample was obtained, representing its crystallization age. Geochemically, the dacites have high contents of SiO2, K2O, and low MgO, MnO and CaO contents, enriched in LILEs (Rb, Ba, Th and U) and depleted in HFSEs (Nb, Ta), which shows a typical characteristics of island arc magma, representing the continental arc products formed by the northward subduction of the Paleo-Tethysan ocean. The U-Pb age frequency distribution of captured zircons from another two dacite samples is mainly concentrated in (1)1010~800 Ma (peak 900 Ma), and the zircon εHf(t) value is 4.5~15.1, responding to the tectonic evolution events of the convergence-rifting-reconvergence between the Yangtze and Cathaysia blocks and the participation of the mantle-derived magma; (2) 720~620 Ma (peak 680 Ma), responding to the re-rifting of the Yangtze-Cathaysia blocks; (3) 490~400 Ma (peak 450 Ma), the zircon εHf(t) value is 2.2~-7.8, responding to the tectono-magmatic event of crust-mantle interaction related to the Caledonian movement in Early Paleozoic in SCB; (4) 280~230 Ma (peak 250 Ma), the zircon εHf(t) value is -13.6~-16.5, and the crustal model age is 2.3~2.1 Ga, which represents the magmatic event of the Paleo-Tethysan Ocean final subduction to closure between Indochina and South China. The study results reveal the dacites from Beisi formation have an intimate affinity with SCB, and its crystallization age constrains the latest time of the Paleo-Tethysan Ocean subduction ending to closure between SCB and Indochina block at least last to Middle to Late Triassic.

     

    • Full-text Translaiton by iFLYTEK

    The full translation of the current issue may be delayed. If you encounter a 404 page, please try again later.
    FullText(HTML)
  • loading
    • References(44)
  • [1]
    舒良树.华南构造演化的基本特征[J].地质通报, 2012, 31(7):1035-1053. http://d.old.wanfangdata.com.cn/Periodical/zgqydz201207003

    SHU Liangshu. An analysis of principal features of tectonic evolution in South China Block[J]. Geological Bulletin of China, 2012, 31(7):1035-1053. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/zgqydz201207003
    [2]
    SHU L S, FAURE M, WANG B, et al. Late Paleozoic-Early Mesozoic geological features of South China:response to the Indosinian collision events in Southeast Asia[J]. Comptes Rendus Geoscience, 2008, 340(2-3):151-165. doi: 10.1016/j.crte.2007.10.010
    [3]
    舒良树.华南前泥盆纪构造演化:从华夏地块到加里东期造山带[J].高校地质学报, 2006, 12(4):418-431. http://d.old.wanfangdata.com.cn/Periodical/gxdzxb200604002

    SHU Liangshu. Predevonian tectonic evolution of South China:from Cathaysian Block to Caledonian period folded orogenic belt[J]. Geological Journal of China Universities, 2006, 12(4):418-431. http://d.old.wanfangdata.com.cn/Periodical/gxdzxb200604002
    [4]
    SHU L S, DENG P, YU J H, et al. The age and tectonic environment of the rhyolitic rocks on the western side of Wuyi Mountain, South China[J]. Science in China Series D:Earth Sciences, 2008, 51(8):1053-1063. doi: 10.1007/s11430-008-0078-4
    [5]
    WANG Y J, FAN W M, SUN M, et al. Geochronological, geochemical and geothermal constraints on petrogenesis of the Indosinian peraluminous granites in the South China Block:a case study in the Hunan Province[J]. Lithos, 2007, 96(3-4):475-502. doi: 10.1016/j.lithos.2006.11.010
    [6]
    CHEN Z C, LIN W, FAURE M, et al. Geochronology and isotope analysis of the Late Paleozoic to Mesozoic granitoids from Northeastern Vietnam and implications for the evolution of the South China block[J]. Journal of Asian Earth Sciences, 2014, 86:131-150. doi: 10.1016/j.jseaes.2013.07.039
    [7]
    LIU J L, TRAN M D, TANG Y, et al. Permo-Triassic granitoids in the northern part of the Truong Son belt, NW Vietnam:geochronology, geochemistry and tectonic implications[J]. Gondwana Research, 2012, 22(2):628-644. doi: 10.1016/j.gr.2011.10.011
    [8]
    CAI J X, ZHANG K J. A new model for the Indochina and South China collision during the Late Permian to the Middle Triassic[J]. Tectonophysics, 2009, 467(1-4):35-43. doi: 10.1016/j.tecto.2008.12.003
    [9]
    QIN X F, WANG Z Q, ZHANG Y L, et al. Geochemistry of Permian mafic igneous rocks from the Napo-Qinzhou tectonic belt in southwest Guangxi, Southwest China:Implications for arc-back arc basin magmatic evolution[J]. Acta Geologica Sinica (English Edition), 2012, 86(5):1182-1199. doi: 10.1111/j.1755-6724.2012.00740.x
    [10]
    CARTER A, CLIFT P D. Was the Indosinian orogeny a Triassic mountain building or a thermotectonic reactivation event?[J]. Comptes Rendus Geoscience, 2008, 340(2-3):83-93. doi: 10.1016/j.crte.2007.08.011
    [11]
    FAURE M, LEPVRIER C, VAN NGUYEN V, et al. The South China block-Indochina collision:Where, when, and how?[J]. Journal of Asian Earth Sciences, 2014, 79:260-274. doi: 10.1016/j.jseaes.2013.09.022
    [12]
    曾允孚, 刘文均, 陈洪德, 等.华南右江复合盆地的沉积构造演化[J].地质学报, 1995, 69(2):113-124. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199500063473

    ZENG Yunfu, LIU Wenjun, CHEN Hongde, et al. Evolution of sedimentation and tectonics of the Youjiang Composite Basin, South China[J]. Acta Geologica Sinica, 1995, 69(2):113-124. (in Chinese with English abstract) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199500063473
    [13]
    吴浩若.晚古生代-三叠纪南盘江海的构造古地理问题[J].古地理学报, 2003, 5(1):63-76. http://d.old.wanfangdata.com.cn/Periodical/gdlxb200301006

    WU Haoruo. A discussion on the tectonic palaeogeography of the Nanpanjiang sea in Late Palaeozoic and Triassic[J]. Journal of Palaeogeography, 2003, 5(1):63-76. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/gdlxb200301006
    [14]
    秦建华, 吴应林, 颜仰基, 等.南盘江盆地海西-印支期沉积构造演化[J].地质学报, 1996, 70(2):99-107. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199600066083

    QIN Jianhua, WU Yinglin, YAN Yangji, et al. Hercynian-Indosinian Sedimentary-tectonic evolution of the Nanpanjiang Basin[J]. Acta Geologica Sinica, 1996, 70(2):99-107. (in Chinese with English abstract) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199600066083
    [15]
    LEHRMANN D J, PAYNE J L, HONG D H, et al. Record of the end-Permian extinction and Triassic biotic recovery in the Chongzuo-Pingguo platform, southern Nanpanjiang basin, Guangxi, South China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2007, 252(1-2):200-217. doi: 10.1016/j.palaeo.2006.11.044
    [16]
    FAN W M, ZHANG C H, WANG Y J, et al. Geochronology and geochemistry of Permian basalts in western Guangxi Province, Southwest China:Evidence for plume-lithosphere interaction[J]. Lithos, 2008, 102(1-2):218-236. doi: 10.1016/j.lithos.2007.09.019
    [17]
    覃小锋, 王宗起, 张英利, 等.桂西南早中生代酸性火山岩年代学和地球化学:对钦-杭结合带西南段构造演化的约束[J].岩石学报, 2011, 27(3):794-808. doi: 10.1002-bies.200900122/

    QIN Xiaofeng, WANG Zongqi, ZHANG Yingli, et al. Geochronology and geochemistry of Early Mesozoic acid volcanic rocks from Southwest Guangxi:Constraints on tectonic evolution of the southwestern segment of Qinzhou-Hangzhou joint belt[J]. Acta Petrologica Sinica, 2011, 27(3):794-808. (in Chinese with English abstract) doi: 10.1002-bies.200900122/
    [18]
    王文宝, 李建华, 辛宇佳, 等.华南大容山-十万大山花岗岩体LA-ICP-MS锆石U-Pb定年、地球化学特征及地质意义[J].地球学报, 2018, 39(2):179-188. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqxb201802006

    WANG Wenbao, LI Jianhua, XIN Yujia, et al. Zircon LA-ICP-MS U-Pb dating and geochemical analysis of the Darongshan-Shiwandashan Granitoids in Southwestern South China and their geological implications[J]. Acta Geoscientica Sinica, 2018, 39(2):179-188. (in Chinese with English abstract) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqxb201802006
    [19]
    李献华, 刘颖, 涂湘林, 等.硅酸盐岩石化学组成的ICP-AES和ICP-MS准确测定:酸溶与碱熔分解样品方法的对比[J].地球化学, 2002, 31(3):289-294. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqhx200203010

    LI Xianhua, LIU Ying, TU Xianglin, et al. Precise determination of chemical compositions in silicate rocks using ICP AES and ICP MS:A comparative study of sample digestion techniques of alkali fusion and acid dissolution[J]. Geochimica, 2002, 31(3):289-294. (in Chinese with English abstract) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqhx200203010
    [20]
    刘颖, 刘海臣, 李献华.用ICP-MS准确测定岩石样品中的40余种微量元素[J].地球化学, 1996, 25(6):552-558.

    LIU Ying, LIU Haichen, LI Xianhua. Simultaneous and precise determination of 40 trace elements in rock samples using ICP-MS[J]. Geochimica, 1996, 25(6):552-558. (in Chinese with English abstract)
    [21]
    LIU Y S, GAO S, HU Z C, et al. 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[J]. Journal of Petrology, 2010, 51(1-2):537-571. doi: 10.1093/petrology/egp082
    [22]
    GRIFFIN W L, PEARSON N J, BELOUSOVA E, et al. The Hf isotope composition of cratonic mantle:LAM-MC-ICPMS analysis of zircon megacrysts in kimberlites[J]. Geochimica et Cosmochimica Acta, 2000, 64(1):133-147. doi: 10.1016/S0016-7037(99)00343-9
    [23]
    GRIFFIN W L, WANG X, JACKSON S E, et al. Zircon chemistry and magma mixing, SE China:in-situ analysis of Hf isotopes, Tonglu and Pingtan igneous complexes[J]. Lithos, 2002, 61(3-4):237-269. doi: 10.1016/S0024-4937(02)00082-8
    [24]
    刘翠, 邓晋福, 刘俊来, 等.哀牢山构造岩浆带晚二叠世-早三叠世火山岩特征及其构造环境[J].岩石学报, 2011, 27(12):3590-3602. http://d.old.wanfangdata.com.cn/Periodical/ysxb98201112007

    LIU Cui, DENG Jinfu, LIU Junlai, et al. Characteristics of volcanic rocks from Late Permian to Early Traissic in Ailaoshan tectono-magmatic belt and implications for tectonic settings[J]. Acta Petrologica Sinica, 2011, 27(12):3590-3602. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/ysxb98201112007
    [25]
    WINCHESTER J A, FLOYD P A. Geochemical discrimination of different magma series and their differentiation products using immobile elements[J]. Chemical Geology, 1977, 20:325-343. doi: 10.1016/0009-2541(77)90057-2
    [26]
    ROLLINSON H R. Using geochemical data:evaluation, presentation, interpretation[M]. England:Pearson Education Limited, 1993:1-56.
    [27]
    SUN S S, MCDONOUGH W F. Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and processes[J]. Geological Society, London, Special Publications, 1989, 42(1):313-345. doi: 10.1144/GSL.SP.1989.042.01.19
    [28]
    MCDONOUGH W F, SUN S S. The composition of the earth[J]. Chemical Geology, 1995, 120(3-4):223-253. doi: 10.1016/0009-2541(94)00140-4
    [29]
    TAYLOR S R, MCLENNAN S M. The continental crust:its composition and evolution[M]. Oxford:Blackwell, 1985:1-312.
    [30]
    李政林, 刘希军, 许继峰, 等.右江盆地基性岩的地球化学演化特征及其区域构造意义[J].桂林理工大学学报, 2015, 35(4):727-735. doi: 10.3969/j.issn.1674-9057.2015.04.010

    LI Zhenglin, LIU Xijun, XU Jifeng, et al. Geochemical evolution characteristics and regional tectonic significance of mafic rocks from Youjiang Basin[J]. Journal of Guilin University of Technology, 2015, 35(4):727-735. (in Chinese with English abstract) doi: 10.3969/j.issn.1674-9057.2015.04.010
    [31]
    PEARCE J A, HARRIS N B W, TINDLE A G. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks[J]. Journal of Petrology, 1984, 25(4):956-983. doi: 10.1093/petrology/25.4.956
    [32]
    LAI C K, MEFFRE S, CRAWFORD A J, et al. The Central Ailaoshan ophiolite and modern analogs[J]. Gondwana Research, 2014, 26(1):75-88. doi: 10.1016/j.gr.2013.03.004
    [33]
    陈泽超, 林伟, FAURE M, 等.越南东北部早中生代构造事件的年代学约束[J].岩石学报, 2013, 29(5):1825-1840. http://d.old.wanfangdata.com.cn/Conference/8159404

    CHEN Zechao, LIN Wei, FAURE M, et al. Geochronological constraint of Early Mesozoic tectonic event at Northeast Vietnam[J]. Acta Petrologica Sinica, 2013, 29(5):1825-1840. http://d.old.wanfangdata.com.cn/Conference/8159404
    [34]
    JIAN P J, LIU D Y, KRÖNER A, et al. Devonian to Permian plate tectonic cycle of the Paleo-Tethys Orogen in southwest China (II):insights from zircon ages of ophiolites, arc/back-arc assemblages and within-plate igneous rocks and generation of the Emeishan CFB province[J]. Lithos, 2009, 113(3-4):767-784. doi: 10.1016/j.lithos.2009.04.006
    [35]
    SHI M F, LIN F C, FAN W Y, et al. Zircon U-Pb ages and geochemistry of granitoids in the Truong Son terrane, Vietnam:Tectonic and metallogenic implications[J]. Journal of Asian Earth Sciences, 2015, 101:101-120. doi: 10.1016/j.jseaes.2015.02.001
    [36]
    LIU H C, PENG T P, GUO X F. Geochronological and geochemical constraints on the coexistent N-MORB-and SSZ-type ophiolites in Babu area (SW China) and tectonic implications[J]. Journal of the Geological Society, 2018, 175(4):667-678. doi: 10.1144/jgs2017-121
    [37]
    ZHANG R Y, LO C H, CHUNG S L, et al. Origin and tectonic implication of ophiolite and eclogite in the Song Ma suture zone between the South China and Indochina blocks[J]. Journal of Metamorphic Geology, 2013, 31(1):49-62. doi: 10.1111/jmg.12012
    [38]
    ZHANG R Y, LO C H, LI X H, et al. U-Pb dating and tectonic implication of ophiolite and metabasite from the Song Ma suture zone, northern Vietnam[J]. American Journal of Science, 2014, 314(2):649-678. doi: 10.2475/02.2014.07
    [39]
    杜远生, 徐亚军.华南加里东运动初探[J].地质科技情报, 2012, 31(5):43-49. http://d.old.wanfangdata.com.cn/Periodical/kjtb201211011

    DU Yuansheng, XU Yajun. A preliminary study on Caledonian event in South China[J]. Geological Science and Technology Information, 2012, 31(5):43-49. http://d.old.wanfangdata.com.cn/Periodical/kjtb201211011
    [40]
    宋昊, 徐争启, 倪师军, 等.广西摩天岭岩体对江南造山带西南段构造演化的响应:来自新元古代花岗岩锆石U-Pb年代学证据[J].大地构造与成矿学, 2015, 39(6):1156-1175. http://d.old.wanfangdata.com.cn/Periodical/ddgzyckx201506015

    SONG Hao, XU Zhengqi, NI Shijun, et al. Response of the motianling granitic pluton in North Guangxi to the tectonic evolution in the southwestern section of the Jiangnan Orogenic Belt:Constraints from neoproterozoic zircon geochronology[J]. Geotectonica et Metallogenia, 2015, 39(6):1156-1175. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/ddgzyckx201506015
    [41]
    王敏, 戴传固, 陈建书, 等.贵州省梵净山区新元古代岩浆活动的年代学格架及其大地构造意义[J].中国地质, 2016, 43(3):843-856. http://d.old.wanfangdata.com.cn/Periodical/zgdizhi201603011

    WANG Min, DAI Chuangu, CHEN Jianshu, et al. Neoproterozoic geochronologic framework of magmatism in Fanjingshan area and its tectonic implications[J]. Geology in China, 2016, 43(3):843-856. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/zgdizhi201603011
    [42]
    周继彬, 李献华, 葛文春, 等.桂北元宝山地区超镁铁岩的年代、源区及其地质意义[J].地质科技情报, 2007, 26(1):11-18. http://d.old.wanfangdata.com.cn/Periodical/dzkjqb200701002

    ZHOU Jibin, LI Xianhua, GE Wenchun, et al. Geochronology, mantle source and geological implications of neoproterozoic ultramafic rocks from Yuanbaoshan area of Northern Guangxi[J]. Geological Science & Technology Information, 2007, 26(1):11-18. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/dzkjqb200701002
    [43]
    王永磊, 王登红, 张长青, 等.广西钦甲花岗岩体单颗粒锆石LA-ICP-MS U-Pb定年及其地质意义[J].地质学报, 2011, 85(4):475-481. http://d.old.wanfangdata.com.cn/Periodical/dizhixb201104003

    WANG Yonglei, WANG Denghong, ZHANG Changqing, et al. LA-ICP-MS zircon U-Pb dating of the Qinjia granite in Guangxi province and its geologic significance[J]. Acta Geologica Sinica, 2011, 85(4):475-481. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/dizhixb201104003
    [44]
    王永磊, 张长青, 王成辉, 等.广西德保铜矿钦甲岩体Hf同位素特征及其对壳幔相互作用的指示[J].大地构造与成矿学, 2012, 36(3):377-383. http://d.old.wanfangdata.com.cn/Periodical/ddgzyckx201203009

    WANG Yonglei, ZHANG Changqing, WANG Chenghui, et al. Hf isotopic composition of the Qinjia granites from the Debao Cu Deposit, Guangxi:Implications for crust-mantle interaction[J]. Geotectonica Et Metallogenia, 2012, 36(3):377-383. (in Chinese with English abstract) http://d.old.wanfangdata.com.cn/Periodical/ddgzyckx201203009
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    Figures(8)  / Tables(3)

    Get Citation
    PDF
    XML

    Article Metrics

    Article views (293) PDF downloads(27) Cited by()
    Proportional views
    Related

    Website Copyright © Journal of Geomechanics  京ICP备18031784号  Total visits：

    Supported by: Beijing Renhe Information Technology Co., Ltd.    

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return