大兴安岭南段林西地区花岗岩类的源岩:地壳生长的时代和方式

刘伟 潘小菲 谢烈文 李禾. 大兴安岭南段林西地区花岗岩类的源岩:地壳生长的时代和方式[J]. 岩石学报, 2007, 23(2): 441-460.
引用本文: 刘伟 潘小菲 谢烈文 李禾. 大兴安岭南段林西地区花岗岩类的源岩:地壳生长的时代和方式[J]. 岩石学报, 2007, 23(2): 441-460.
Sources of material for the Linxi granitoids, the southern segment of the Da Hinggan Mts.: when and how continental crust grew?[J]. Acta Petrologica Sinica, 2007, 23(2): 441-460.
Citation: Sources of material for the Linxi granitoids, the southern segment of the Da Hinggan Mts.: when and how continental crust grew?[J]. Acta Petrologica Sinica, 2007, 23(2): 441-460.

大兴安岭南段林西地区花岗岩类的源岩:地壳生长的时代和方式

  • 基金项目:

    国家自然科学基金项目(编号:40472056)资助.致谢在SHRIMP锆石U-Pb年龄测定中,得到了杨之青工程师、宋彪和王彦斌先生的协助;在LA-MC-ICPMS锆石Hf同位素组成测定中,得到了武俊宇同志的协助,谨致谢忱.感谢吴福元博士和杨进辉博士的讨论.感谢葛文春教授和1位匿名评阅人的评阅.

Sources of material for the Linxi granitoids, the southern segment of the Da Hinggan Mts.: when and how continental crust grew?

  • 本文选择大兴安岭南段林西地区的5个典型花岗岩体,在岩相学、全岩主微量元素和Nd-Sr同位素组成研究的基础上,对5个岩体的继承锆石/前锆石和岩浆锆石进行了系统的SHRIMP U-Pb年龄测定和LA-MC-ICPMS Hf同位素组成测定,试图阐明林西花岗岩源岩的组成和性质.锆石SHRIMP U-Pb定年表明:大部分林西花岗岩侵位于早白垩世(135~125 Ma),它们的源岩的年龄为~146 Ma.一部分花岗岩类是在早三叠世(241 Ma)和晚侏罗世末(146 Ma)侵位的,它们的源岩的年龄分别是263 Ma和165 Ma.测定了100个锆石206Pb/238U年龄,都年轻于300 Ma,反映在下地壳源区不存在前寒武纪岩石.做了175个锆石Hf同位素组成测定,均给出高正值εHf(t),说明源岩具有初生地壳的性质.在相同的εNd(t)值下,林西花岗岩的锆石εHf(t)值显著高于地球阵列和夏威夷洋岛玄武岩,这种εHf~εNd脱耦性指示源岩中含有远洋沉积物即古生代俯冲增生杂岩的组分.206pb/238U年龄t=263~165Ma的锆石的εHf(t)值构成近乎平行于亏损地幔Hf同位素演化线的趋势列,说明源岩基本为俯冲洋壳镁铁-超镁铁岩.t=146~125 Ma的锆石的εHf(t)值大幅度降低;同时,从晚侏罗世末到早白垩世,发生了强烈的花岗质岩浆活动.地幔上隆和岩浆底侵以及俯冲洋壳的折返,是造成下地壳源岩组成急剧变化和热梯度上升的原因.以底侵镁铁质岩石为主、以古生代俯冲增生杂岩为次的源岩的熔融,产生了马鞍子、夜来改和龙头山2花岗岩(岩套2).林西镇南西的小城子岩体的源岩则以古生代俯冲增生杂岩为主,并含一定量的底侵镁铁质岩石.5个岩体的岩浆锆石的176Hf/177Hf值系统低于继承锆石/前锆石者,t=146~125 Ma的锆石从中心到边缘176H/177Hf值呈现降低的趋势或者系统的变化.上述特征反映从源岩的初始熔融直到最终产生花岗岩浆的全过程中,下地壳的熔融区间逐渐扩张、卷入熔融的组分不断增多的过程.岩套1花岗岩类是镁质或Ⅰ型花岗岩,岩套2则表现出A型花岗岩以及从典型到不典型的铁质花岗岩的特征.岩套1和岩套2花岗岩类的岩相学和地球化学特征取决于源岩的性质.岩套1的源岩是相对氧化和含水的洋壳镁铁-超镁铁岩或俯冲增生杂岩;岩套2的源岩则由相对还原和贫水的底侵拉斑玄武岩以及不同分数的俯冲增生杂岩构成.
  • 加载中
  • [1]

    Amelin Y,Lee3 DC,Halliday A N.2000. Early-middle Archean crustal evolution deduced from Lu-Hf and U-Pb isotopic studies of single zircon grains.Geochim Cosmochim Acta,64:4205-4225

    [2]

    Amelin Y,Lee DC,Halliday AN,Pidgeon RT.1999. Nature of the Earth\'s earliest crust from hafnium isotopes in single detrital zircons.Nature,399:252-255

    [3]

    Bao ZW,Chan SH,Zhang ZT.1994. A study on REE and Sm-Nd isotopes of Hegenshan ophiolite,Inner Mongolia.Geochemistry Sinica,23:339 -349

    [4]

    Bartolini A and Larson RL.2001. Pacific microplate and the Pangea supercontinent in the Early to Middle Jurassic.Geology,29 (8):735 -738

    [5]

    Blichert-Toft J,Frey FA,Albarède F.1999. Hf isotope evidence for pelagic sediments in the source of Hawaiian basalts.Science,285:879-882

    [6]

    Buck WR.1991. Modes of continental lithospheric extension.J Geophys Res,96:20161 -20178

    [7]

    Chen B,Jahn BM,Wilde S,Xu B.2000. Two contrasting Paleozoic magmatic belts in northern Inner Mongolia,China:Petrogenesis and tectonic implications.Tectonophysics,328:157-182

    [8]

    Collins WJ,Beams SD,White AJR,Chappell BW.1982. Nature and origin of A-type granites with particular reference to southeastern Australia.Contrib Mineral Petrol,80:189-200

    [9]

    Conrad WK,Nicholls IA,Wall VJ.1988. Water-saturated and -undersaturated melting of metaluminous and peraluminous crustal compositions at 10 kb:Evidence for the origin of silicic magmas in the Taupo Volcanic Zone,New Zealand,and other occurrences.J.Petrol.,29:765 -803

    [10]

    Corfu F,Hanchar JM,Hoskin PWO,Kinny P.2003. Atlas of zircon textures.In:Hanchar JM and Hoskin PWO (eds).Zircon.Reviews in Mineralogy and Geochemistry,53:469 -487

    [11]

    Cumming GL and Richards JR.1975. Ore lead isotope ratios in a continuously changing earth.Earth Planet Sci Lett,28:155 -171

    [12]

    Davis GA,Darby B J,Zheng Y,Spell TL.2002. Geometric and temporal evolution of an extensional detachment fault,Hohhot metamorphic core complex,Inner Mongolia,China.Geology,30:1003-1006

    [13]

    Davis GA,Zheng Y,Wang C,Darby BJ,Zhang C,Gehrels G.2001. Mesozoic tectonic evolution of the Yanshan fold and thrust belt,with emphasis on Hebei and Liaoning provinces,Northern China.In:Hendrix MS and Davis GA (eds).Paleozoic and Mesozoic Tectonic Evolution of Central Asia:from Continental Assembly to Intracontinental Deformation.Geol Soc Am Mem,194:71 -197

    [14]

    DePaolo DJ.1981. Trace element and isotopic effects of combined wallrock assimilation and fractional crystallization.Earth Planet Sci Lett,53:189-202

    [15]

    Foley SF,Barth MG,Jenner GA.2000. Rutile/melt partition coefficients for trace elements and an assessment of the influence of rutile on the trace element characteristics of subduction zone magmas.Geoehim Cosmochim Acta,64:933-938

    [16]

    Frost BR,Barnes CG,Collins WJ,Arculus RJ,Ellis DJ,Frost CD.2001. A geochemical classification for granitic rocks.J Petrol,42(11):2033-2048

    [17]

    Frost CD and Frost BR.1997. Reduced rapakivi-type granites:the tholeiite connection.Geology,25(7):647 -650

    [18]

    Graham SA,Hendrix MS,Johnson CL,Badamgarav D,Badarch G,Amory J,Porter M,Barsbold R,Webb LE,Hacker BR.2001. Sedimentary record and tectonic implications of Mesozoic rifting in southeast Mongolia.Geol Soc Am Bull,113:1560-1579

    [19]

    Green TH,Pearson NJ.1986. Ti-rich accessory phase saturation in hydrous mafic-felsic compositions at high P,T.Chem Geol,54:185-201

    [20]

    Griffin WL,Pearson NJ,Belousova E,Jackson SE,van Achterbergh E,O\'Reilly SY,Shee SR.2000. The Hf isotope composition of cratonic mantle:LAM-MC-ICPMS analysis of zircon megacrysts in kimberlites.Geochim Cosmochim Acta,64:133 -147

    [21]

    Griffin WL,Wang X,Jackson SE,Pearson NJ,O\'Reilly SY,Xu XS,Zhou XM.2002. Zircon chemistry and magma mixing,SE China:In-situ analysis of Hf isotopes,Tonglu and Pingtan igneous complexes.Lithos,61:237 -269

    [22]

    Han BF,Wang SG,Jahn BM,Hong DW,et al.1997. Depleted-mantle source for the Ulungur River A-type granites from North Xinjiang,China:Geochemistry and Nd-Sr isotopic evidence,and implications for Phanerozoic crustal growth.Chem Geol,138:135 -159

    [23]

    Holtz F and Johannes W.1991. Genesis of peraluminous granites I.Experimental investigation of melt compositions at 3 and 5 kb and various H2O activities.J Petrol,32:935 -958

    [24]

    Hong D,Huang H,Xiao Y,Xu H,Jin M.1995. Permian alkaline granites in central Inner Mongolia and their geodynamic significance.Acta Geologica Sinica,8:27 -39

    [25]

    Hoskin PWO and Schaltegger U.2003. The composition of zircon and igneous and metamorphic petrogenesis.In:Hanchar JM and Hoskin PWO (eds).Zircon.Reviews in Mineralogy and Geochemistry,53:27-62

    [26]

    Jahn BM,Wu FY,Capdevila R,Fourcade S,Wang YX,Zhao ZH.2001. Highly evolved juvenile granites with tetrad REE patterns:the Woduhe and Baerzhe granites from the Great Xing\'an (Khingan)Mountains in NE China.Lithos,59:171 -198

    [27]

    Jahn BM,Wu FY,Chen B.2000. Massive granitoid generation in Central Asia:Nd isotopic evidence and implication for continental growth in the Phanerozoic.Episodes,23:82-92

    [28]

    King EM,Valley JW,Davis DW,Edwards GR.1998. Oxygen isotope ratios of Archean plutonic zircons from granite-greenstone belts of the Superior Province:indicator of magmatic source.Precambrian Research,92:365-387

    [29]

    Kovalenko VI,Yarmolyuk VV,Kovach VP,Kotov AB,Kozakov IK,Sal\'nikova EB.1996. Sources of Phanerozoic granitoids in Central Asia:Sm-Nd isotope data.Geochem Inter,34:628-640

    [30]

    Kravchinsky VA,Cogne JP,Harbert WP,Kuzmin MI.2002. Evolution of the Mongol-Okhotsk ocean as constrained by new paleomagnetic data from the Mongol-Okhotsk suture zone,Siberia.Geophys J Int,148:34-57

    [31]

    Kwon ST,Tilton GR,Coleman RG,Feng Y.1989. Isotopic studies bearing on the tectonics of the west Junggar region,Xinjiang,China.Tectonics,8:719-727

    [32]

    Liu W,Pan XF,Liu DY.2006. Three-step continental-crust growth from subduction accretion and underplating,through intermediary differentiation,to granitoid production.J Petrol (in revision)

    [33]

    Liu W,Siebel W,Li XJ,Pan XF.2005. Petrogenesis of the Linxi granitoids,northern Inner Mongolia of China:constraints on basaltic underplating.Chem Geol,219:5 -35

    [34]

    Lu ZX,Xia HK.1993. Geoscienee transect from Dong Ujimqin of Inner Mongolia to Donggou of Liaoning,China.Acta Geophys Sin,36:765-772

    [35]

    Ma XY,Liu CQ,Liu GD.1991. The Geotransect From Xiangshui of Shandong to Madula of Inner Mongolia.Geol Publish House,Beijing

    [36]

    Machado N,Simonetti A.2001. U-Pb dating and Hf isotopic composition of zircons by laser ablation-MC-ICP-MS.In:Sylvester P (ed).Laser-Ablation-ICPMS in the Earth Sciences:Principles and Applications,Short Course-Mineralogical Association of Canada,29:121-146

    [37]

    Meng QR.2003. What drove late Mesozoic extension of the northern China-Mongolia tract? Tectonophysics,369:155 -174

    [38]

    Muir RJ,Ireland TR,Weaver SD,Bradshaw J D.1996. Ion microprobe dating of Paleozoic granitoids:Devonian magmatism in New Zealand and correlations with Australia and Antarctica.Chem Geol,127:191 -210

    [39]

    Nemchin AA and Pidgeon RT.1997. Evolution of the Darling Range Batholith,Yilgarn Craton,Western Australia:a SHRIMP zircon study.J Petrol,38:625-649

    [40]

    Nowell GM,Kempton PD,Noble SR,et al.1998. High precision Hf isotope measurements of MORB and OIB by thermal ionization mass spectrometry:insights into the depleted mantle.Chem Geol,149:211 -233

    [41]

    Nozaka T,Liu Y.2002. Petrology of the Hegenshan ophiolite and its implications for the tectonic evolution of northern China.Earth Planet Sci Lett,202:89-104

    [42]

    Patchett PJ,White WM,Feldmann H,Kielinczuk S,Hofmann AW.1984. Hafnium / rare earth element fractionation in the sedimentary system and crustal recycling into the Earth\'s mantle.Earth Planet Sci Lett,69:365-378

    [43]

    Poli GE and Tommasini S.1991. Model for the origin and significance of microgranular enclaves in calc-alkaline granitoids.J Petrol,32 (3):657-666

    [44]

    Schaltegger U,Fanning CM,Gunther D,Maurin JC,Schulmann K,Gebauer D.1999. Growth,annealing and recrystallization of zircon and preservation of monazite in high-grade metamorphism:Conventional and in situ U-Pb isotope,cathodoluminescence and microchemical evidence.Contrib Mineral Petrol,134:186-201

    [45]

    Scherer EE,Cameron KL,Blichert-Toft J.2000. Lu-Hf garnet geochronology:Closure temperature relative to the Sm-Nd system and the effects of trace mineral inclusions.Geochim Cosmochim Acta,64:3413-3432

    [46]

    Schmitz MD,Vervoort JD,Bowring SA,Patchett PJ.2004. Decoupling of the Lu-Hf and Sm-Nd isotope systems during the evolution of granulitic lower crust beneath southern Africa.Geology,32 (5):405-408

    [47]

    Seng(o)r AMC,Natal\'in BA,Burtman VS.1993. Evolution of the Altaid tectonic collage and Paleozoic crustal growth in Eurasia.Nature,364:299-307

    [48]

    Shao JA.1989. Continental crust accretion and tectono-magmatic activity at the northern margin of the Sino-Korean plate.Journal of Southeast Asian Earth Sciences,3:57 -62

    [49]

    Sun S,McDonough WF.1989. Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and processes.In:Saunders AD & Norry MJ (eds),Magmatism in the Ocean Basins.Geological Society Special Publication,42:313-345

    [50]

    Tang K.1990. Tectonic development of Paleozoic fold belts at the north margin of the Sino-Korean craton.Tectonics,9:249-260

    [51]

    Tang K and Yan Z.1993. Regional metamorphism and tectonic evolution of the Inner Mongolian suture zone.J Metamor Geol,11:511 -522

    [52]

    Tepley FJ,Davidson JP,Tilling RI,Arth JG.2000. Magma mixing,recharge and eruption histories recorded in plagioclase phenocrysts from El Chichón Volcano,Mexico.J Petrol,41(9):1397-1411

    [53]

    Valley JW,Kinny PD,Schulze DJ,Spicuzza MJ.1998. Zircon megacrysts from kimberlite:oxygen isotope variability among mantle melts.Contrib Mineral Petrol,133:1-11

    [54]

    Vervoort JD,Patchett PJ,Blichert-Toft J,Albarède F.1999. Relationships between Lu-Hf and Sm-Nd isotopic systems in the global sedimentary system.Earth Planet Sci Lett,168:79 -99

    [55]

    Wang Q and Liu XY.1986. Paleoplate tectonics between Cathaysia and Angaraland in Inner Mongolia of China.Tectonics,5:1073-1088

    [56]

    Wang LG,Qiu YM,McNaughton NJ,Groves DI,Luo ZK,Huang JZ,Miao LC,Liu YK.1998. Constraints on crustal evolution and gold metallogeny in the northwestern Jiaodong Peninsula,China,from SHRIMP U-Pb zircon studies of granitoids.Ore Geol Rev,13:275-291

    [57]

    Webb LE,Graham SA,Johnson CL,Badarch G,Hendrix MS.1999. Occurrence,age,and implications of the Yagan-Onch Hayrhan metamorphic core complex,southern Mongolia.Geology,27:143 -146

    [58]

    Whalen JB,Currie KL,Chappell BW.1987. A-type granites:geochemical characteristics,discrimination and petrogenesis.Contrib Mineral Petrol,95:407 -419

    [59]

    Williams IS and Claesson S.1987. Isotopic evidence for the Precambrian provenance and Caledonian metamorphism of high grade paragneisses from the Seve Nappes,Scandinavian Caledonides.Contrib Mineral Petrol,97:205 -217

    [60]

    Wu FY,Jahn BM,Wilde SA,Lo CH,Yui TF,Lin Q,Ge WC,Sun DY.2003. Highly fractionated I-type granites in NE China (Ⅱ):isotopic geochemistry and implications for crustal growth in the Phanerozoic.Lithos,67:191 -204

  • 加载中
计量
  • 文章访问数:  8648
  • PDF下载数:  5428
  • 施引文献:  0
出版历程
修回日期:  2006-09-18
刊出日期:  2007-02-28

目录