北阿尔金巴什考供盆地南缘花岗杂岩体特征及锆石SHRIMP定年

吴才来,杨经绥,姚尚志,曾令森,陈松永,李海兵,戚学祥,Wooden J L,Mazdab F K. 北阿尔金巴什考供盆地南缘花岗杂岩体特征及锆石SHRIMP定年[J]. 岩石学报, 2005, 21(3): 846-858.
引用本文: 吴才来,杨经绥,姚尚志,曾令森,陈松永,李海兵,戚学祥,Wooden J L,Mazdab F K. 北阿尔金巴什考供盆地南缘花岗杂岩体特征及锆石SHRIMP定年[J]. 岩石学报, 2005, 21(3): 846-858.
WU Cailai,YANG JingSui,YAO ShangZhi,ZENG LingSen,CHEN SongYoung,LI HaiBing,QI XueQiang,Wooden J L and Mazdab F K Institute of Geology,Chinese Academy of Geological sciences,Beijing 100037,China Geological Survey of Anhui Province,Hefei 230001,China Stanford University,CA,USA. Characteristics of the granitoid complex and its zircon SHRIMP dating at the south margin of the Bashikaogong Basin, North Altun, NW China[J]. Acta Petrologica Sinica, 2005, 21(3): 846-858.
Citation: WU Cailai,YANG JingSui,YAO ShangZhi,ZENG LingSen,CHEN SongYoung,LI HaiBing,QI XueQiang,Wooden J L and Mazdab F K Institute of Geology,Chinese Academy of Geological sciences,Beijing 100037,China Geological Survey of Anhui Province,Hefei 230001,China Stanford University,CA,USA. Characteristics of the granitoid complex and its zircon SHRIMP dating at the south margin of the Bashikaogong Basin, North Altun, NW China[J]. Acta Petrologica Sinica, 2005, 21(3): 846-858.

北阿尔金巴什考供盆地南缘花岗杂岩体特征及锆石SHRIMP定年

  • 基金项目:

    本文得到国家自然科学基金项目(40472034)、国家重点自然科学基金项目(49732070)、同家973项目(G1998040800)、国土资源部“十五”重点科技项目(20010101)、国家地质调查项目(DKD2001003)的资助.

Characteristics of the granitoid complex and its zircon SHRIMP dating at the south margin of the Bashikaogong Basin, North Altun, NW China

  • 北阿尔金巴什考供盆地南缘花岗杂岩体呈近东西向分布,长约49公里,出露面积约90平方公里,与围岩之间为明显的侵入接触关系,接触界线为不规则的渡状、锯齿状。围岩为前寒武纪砂岩、片岩、泥岩及凝灰质砂岩。该杂岩体主要由巨斑花岗岩、红色花岗岩、灰白色似斑状花岗岩和粉红色似斑状花岗岩组成。杂岩体的主元素含量变化不大,SiO2为65.14%- 75.66%,全碱含量为7.49-8.96%,K2O/Na2O比值为1.12-2.68,岩石的里特曼指数平均为2.34,CIPW标准矿物计算均出现刚玉(AC)(平均为1.78),说明岩石铝过饱和;杂岩体的稀土总量变化于89.44×10-6-335.28×10-6之间,不同岩石类型均有负铕异常,且从巨斑花岗岩→灰白色似斑状花岗岩→红色似斑状花岗岩→红色花岗岩,负铕异常越来越明显,表现在Eu/ Eu+值由0.65→0.51→0.48→0.30。在微量元素蛛网图上,所有样品的微量元素丰度均高于原始地幔值,并具有相似的配分模式,即在Ba、Nb、Sr、P、Ti处呈明显的低谷,显示出S型花岗岩的特征。锆石SHRIMP U-Pb定年得出,巨斑花岗岩、红色中细粒花岗岩、灰白色和粉红色似斑状花岗岩的年龄分别为474.3±6.8Ma、446.6±5.2Ma、434.5±3.8Ma和431.1±3.8Ma。结合区域地质特征,我们认为,该杂岩体形成于同碰撞-碰撞后的构造环境。
  • 加载中
  • [1]

    Armin Zeh, Ian S. Williams, Helene Bratz, Ian L. Millar. 2003. Different age response of zircon and monazite during the tectonometamorphic evolution of a high grade paragneiss from the Ruhla Crystalline Complex, central Germany. Contrib Mineral Petrol, 145:691 - 706

    [2]

    Arth, J G. 1976a. Behaviour of trace elements during magmatic process - a summary of theoretical model and their applications, J. Res.USGS., 4(1): 41 -47

    [3]

    Boynton, W V. 1984. Cosmochemistry of the rare earth elements:Meteorite studies, in Henderson, P., ed., Rare earth element geochemistry: Developments in gechemistry 2. Amsterdam,Elsevier, 63 - 114

    [4]

    Calvin F M, Susanne M M and Russell W M. 2003. Hot and cold granites? Implications of zircon saturation temperatures and preservation of inheritance. Geology, 31 (6): 529 -532

    [5]

    Chen Xuanhua, George Gehrels, Wang Xiaofeug, Yang Feng, Chen Zhengle. 2003. Granite from North Altyn Tagh, NW China: U/Pb Geochronology and Tectonic Setting. Bulletin of Mineralogy,Petrology and Geochemistry, 22 ( 4 ): 294 - 298 ( in Chinese with English abstract)

    [6]

    Chen Xuanhua, Wang Xiaofeng, Yang Feng, Chen Zhengle, Chen Bolin,Wang Kezhuo. 2001. Tectonic environments of magmatism in Early Paleozoic in the north Altyn Tagh, China. J. Geomechanics, 7 ( 3 ):193 -200 (in Chinese with English abstract)

    [7]

    Cheruiak D J, Watson E B. 2000. Pb diffusion in zircon. Chem Geol. ,172:5 - 24

    [8]

    Cocherie A, Rossi P H, Fouillac A M, Vidal P H. 1994. Crust and mantle contributions to granite genesis: an example from the Variscan batholith of Corsica, France, studied by trace element and Nd-Sr-Oisotopic systematics. Chem. Geol. 115:173-221

    [9]

    Chen F, Siebel W and Satir M. 2003. Geochemical and isotopic composition and inherited zircon ages as evidence for lower crustal origin of two Variscan S-type granites in the NW Bohemian massif.Int J Earth Sci ( Geol Rundsch) , 92: 173 - 184

    [10]

    Gormet L P, Silver L T. 1983. Rare earth element distribution among minerals in a granodiorite and their petrogenetic implications.Geochim Cosmochim Acta, 47:925 -939

    [11]

    Joseph B Whalen, Kenneth L Currie and Bruce W Chappell. 1987. Atype granites: geochemical characteristics, discrimination and petrogenesis. Contrib. Mineral Petrol, 95:407-419

    [12]

    Liu Jiayuan. 2003. Compound massif and complexmassif - the two basic forms o f the massif association of granitoid and their significance.Geological Prospecting Forum, 18 (3): 143 - 148 ( in Chinese with English abstract)

    [13]

    Lee J K W, Williams I S and Ellis D J. 1997. Pb, U and Th diffusion in natural zircon. Nature, 390:159 - 161

    [14]

    Liu Liang, Che Zicheng, Wang Yan, Luo Jinhai, Chen Danling. 1999. The petrological characters and geotoctonic setting of high-pressure metamorphic rock belts in Altun Mountains. Acta Petrologica Sinica,15( 1 ): 57 -64 (in Chinese with English abstract)

    [15]

    Miller C F, Mittlefehldt D W. 1982. Depletion of light rare-earth elements in felsic magmas. Geology, 10: 129-133

    [16]

    Kinny P D, Strachan R A, Kocks H and Friend C R L. 2003. U-Pb geochronology of late Neoproterozoic augen granites in the Moine Supergroup, NW Scotland: dating of rift-related, felsic magmatism during supercontinent break-up? Journal of the Geological Society,London, 160: 925 - 934

    [17]

    Pal N, Pal D C, Mishral B and Meyer F M. 2001. The evolution of the Palim granite in the Bastar tin province, Central India. Mineralogy and Petrology, 72:281 -304

    [18]

    Pidgeon R T, Nemchin A A, Hitchen G J. 1998. Internal structures of zircons from Archaean granites from the Darling Range batholith:Implications for zircon stability and the interpretation of zircon U-Pb ages. Contributions to Mineralogy and Petrology, 132:288 -299

    [19]

    Propach G, Baumann A, Schulz Schmalschlger M, Grauert B. 2000. Zircon and monazite U Pb ages of Variscan granitoid rocks and gneisses in the Moldanubian zone of eastern Bavaria, Germany. Geol Pal, 345 - 377

    [20]

    Siebel W, Chen F, Satir M. 2003. Late-Variscan magmatism revisited:new implications from Pb-evaporation zircon ages on the emplacement of redwitzites and granites in NE Bavaria. Int J Earth Sci: 92:36 -53

    [21]

    Sinkiang Burean of Geology and Mineral Resources, Report of Regional geological surveying of Bashikaogong (J-46-Ⅶ) with a scale of 1/200000, 1982, 94: 136 ( P: 1 - 236) ( in Chinese)

    [22]

    Watson E B, Harrison T M. 1983. Zircon saturation revisited:temperature and composition effects in a variety of crustal magma types. Earth Planet Sci Lett, 64:295 -304

    [23]

    Wiebel R A, Manon M R, Hawkins D P and Mcdonough W F. 2004. Late-Stage Maftc Injection and Thermal Rejuvenation of the Vinalhaven Granite, Coastal Maine. Journal of Petrology, 45 ( 11 ):2133 -2153

    [24]

    Wu C L, Yang J S, Wooden J L. 2002. Zircon SHRIMP dating of granite from Qaidamshan, NW China. Chinese Science Bulletin, 47 (5):418 -422

    [25]

    Wu Cailai, Yang Jingsui, Xu Zhiqin, Joseph L. Wooden, Trevor IRELAND, Li Haibing, Shi Rendeng Meng Fancong and Chen Songyong. 2004. Granitic magmatism in the early Paleozoic UHP belt of North Qaidam, NW China. Acta Geologica Sinica, 78 (5):658 -674 (in Chinese with English)

    [26]

    Zeng Lingsen, Jason B Saleeby and Paul Asimow. 2005. Nd isotope disequilibrium during crustal anatexis: a record from the Goat Ranch migmatie complex, soutjern Sierra Nevada batholith, California.Geology, 33 ( 1 ): 53 - 56

    [27]

    Wu Jun, Lan Chaoli , Li Jiliang and Yu Liangjun. 2002. Geochemical evidence of MORB and OIB combination in Hongliugou ophiolite melanges, Altun fault belt. Acta Petrologica et Mineralogica, 21(1): 24 -30

    [28]

    Wu Jun,Li Jiliang, Lan Chaoli, Yu Liangjun. 2001. New knowledges on Hongliugou ophiolite along altun fault, NW China, Chinese Journal of Geology, 36 (3): 342 -349 (in Chinese with English abstract)

    [29]

    Yang Jingsui, Wu Cailai, Shi Rendeng. 2002. Sheeted dike swarm in Hongliugou, northwest of the Altun region: Evidence for seafloor spreading, Geological Bulletin of China, 21 ( 2 ): 69 - 74 ( in Chinese with English abstract)

    [30]

    陈宣华,G.Gehrels,王小凤,杨风,陈正乐.2003.阿尔金山北缘花岗岩的形成时代及其构造环境探讨.矿物岩石地球化学通报,22(4):294-298

    [31]

    陈宣华,王小凤,杨风,陈正乐,陈柏林,王克卓.2001.阿尔金山北缘早古生代岩浆活动的构造环境.地质力学学报,7(3):193-200

    [32]

    刘家远.2003.复式岩体和杂岩体--花岗岩类岩体组合的两种基本形式及其意义.地质找矿论丛,18(3):143-148

    [33]

    刘良,车自成,王焰,罗金海,陈丹玲.1999.阿尔金高压变质岩带的特征及其构造意义.岩石学报,15(1):57-64

    [34]

    刘良,孙勇,肖培喜,车自成,罗金海,陈丹玲,王焰,张安达,陈亮,王永合.2002.阿尔金发现超高压(》3.8GPa)石榴二辉橄榄岩.科学通报,47(9):657-662

    [35]

    吴峻,兰朝利,李继亮,俞良军.2002.阿尔金红柳沟蛇绿混杂岩中MORB与OIB组合的地球化学证据.岩石矿物学杂志,21(1):24-30

    [36]

    吴峻,李继亮,兰朝利,俞良军.2001.阿尔金红柳沟蛇绿岩研究进展.地质科学,36(3):342-349

    [37]

    吴才来,杨经绥,许志琴,Joseph L. WOODEN,TrevorIRELAND,李海兵,史仁灯,孟繁聪,陈松永,Harold PERSING,AndersMEIBON.2004.柴达木盆地北缘古生代超高压带中花岗质岩浆作用.地质学报,78(5):658-674

    [38]

    新疆维吾尔自治区地质局.1982.巴会考供幅(J-46-Ⅶ)1/20万区域地质调查报告.94:136(P:l-236)

    [39]

    杨经绥,吴才来,史仁灯.2002.阿尔金山米兰红柳沟的席状岩墙群:海底扩张的重要证据.地质通报,21(2):69-74

  • 加载中
计量
  • 文章访问数:  8100
  • PDF下载数:  5352
  • 施引文献:  0
出版历程
收稿日期:  2005-03-11
修回日期:  2005-03-11
刊出日期:  2005-05-31

目录