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地质通报  2010 

新疆阿尔泰山南缘沙尔布拉克一带早二叠世花岗岩的年龄、地球化学特征及地质意义

, PP. 1281-1293

Keywords: 早二叠世花岗岩,锆石LA-ICP-MS年龄,地球化学特征,阿尔泰山南缘

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Abstract:

对出露于阿尔泰山南缘沙尔布拉克一带的布可萨拉岩体和索尔库都克岩体中的似斑状黑云母二长花岗岩进行了锆石LA-ICP-MSU-Pb定年,206Pb/238U年龄分别为277.0Ma±2.4Ma和280.9Ma±4.3Ma,表明形成于早二叠世。岩石地球化学特征表明,该期花岗岩具有富碱、高钾的特征,属高钾钙碱性系列,为具有I―A、I―S过渡特点的I型花岗岩,稀土元素含量较高(∑REE为184.68×10-6~221.49×10-6),轻稀土元素富集(LREE/HREE为4.52~8.45),Eu负异常明显(δEu为0.47~0.68),富集大离子亲石元素,具Nb、Ta、Sr、P、Ti等元素负异常。结合区域资料分析,该期岩体形成于碰撞造山后的拉张构造环境,属于后造山花岗岩。阿尔泰南缘早二叠世花岗岩是在后造山拉张背景下,地幔物质减压熔融形成岩浆上涌,底侵于新生地壳之下,使地壳熔融形成岩浆沿深断裂带上侵形成的。

References

[1]  韩宝福,季建清,宋彪,陈立辉,李宗怀,新疆喀拉通克和黄山东含铜镍矿镁铁-超镁铁杂岩体的SHRIMP锆石U-Pb年龄及其地质意义,科学通报,2004(22).
[2]  韩宝福,季建清,宋彪,新疆东准噶尔晚古生代陆壳垂向生长(Ⅰ)--后碰撞深成岩浆活动的时限,岩石学报,2006(5).
[3]  Windley F B,Kroner A,Guo J,Neoproterozoic to Paleozoic geology of the Altai orogen,NW China:New zircon age data andtectonic evolunon,Journal of Geology,2002.
[4]  Xiao W,Windley B F,Badarch G,Palaeozoic accretionary and convergent tectonics of the southern Altaids:implications for the growth of Central Asia,Journal of the Geological Society(London),2004.
[5]  王涛,洪大卫,童英,韩宝福,石玉若,中国阿尔泰造山带后造山喇嘛昭花岗岩体锆石SHRIMP年龄、成因及陆壳垂向生长意义,岩石学报,2005(3).
[6]  Wang T,Hong D W,Jahn B M,Timing,petrogenesis,and setting of Paleozoic synorogenic intrusions from the Ahal Mountains,Northwest China:Implications for the tectonic evolution of an accretionary orogen,Journal of Geology,2006.
[7]  张招崇,闫升好,陈柏林,周刚,贺永康,柴凤梅,何立新,万渝生,新疆东准噶尔北部俯冲花岗岩的SHRIMP U-Pb锆石定年,科学通报,2006(13).
[8]  童英,王涛,洪大卫,代雅建,韩宝福,柳晓明,中国阿尔泰北部山区早泥盆世花岗岩的年龄、成因及构造意义,岩石学报,2007(8).
[9]  刘伟,中国新疆阿尔泰花岗岩的时代及成因类型特征,大地构造与成矿学,1990(1).
[10]  Seng(o)r A M C,Natal?in B A,Burtman V S,Evolution of the Altaid tectonic collage and Paleozoic crustal growth in Eurasia,Nature,1993.
[11]  韩宝福,何国琦,王式?,洪大卫,新疆北部后碰撞幔源岩浆活动与陆壳纵向生长,地质论评,1998(4).
[12]  Kosler J,Fonneland H,Sylvester P,U-Pb dating of detrital zircons for sediment provenance studies-a comparison of laser ablation LCPMS and SIMS techniques,Chemical Geology,2002.
[13]  Yuan H L,Gao S,Liu X M,Accurate U-Pb age and trace element determinations of zircon by laser ablation-inductively coupled phsma mass spectrometry,Geostandards and Geoanalytical Research,2004(3).
[14]  Andersen T,Correction of common lead in U-Pb analyses that do not report 204Pb,Chemical Geology,2002.
[15]  Ludwig K K,Isoplot-A plotting and regression program for radiogenic-isotope data,U S Geological Survey Open-File Report,1991.
[16]  Ludwig K R,Isoplot 3.0-A geochronological toolkit for Microsoft Excel,Berkeley Geochronology Center(Spec.Pub),2003.
[17]  Belousova E A,Griffin W I,O Reilly S Y,Igneous zircon:Trace element composition as an indicator of source rock type,Contributions to Mineralogy & Petrology,2002.
[18]  王式?,韩宅福,洪大卫,新疆乌伦古河碱性花岗岩的地球化学及其构造意义,地质科学,1994(4).
[19]  周刚,新疆吉木乃县阔依塔斯A型花岗岩的地球化学及构造意义,新疆地质,1999(2).
[20]  Jahn B M,Wu F Y,Capdevila R,Highly evolved juvenile granites with terad REE patterns:The Woduhe and Baerzhe granites from the Great Xingan(Khingan)Mountains in NE China,Lithos,2001.
[21]  Wu F Y,Jahn B M,Lo C H,Highly fractionated Ⅰ-type granites in NE China(Ⅰ):Geochronology and petrogenesis,Lithos,2003.
[22]  张海祥,牛贺才,Hiroaki Sato,单强,于学元,Jun\'ichi Ito,张旗,新疆北部晚古生代埃达克岩、富铌玄武岩组合:古亚洲洋板块南向俯冲的证据,高校地质学报,2004(1).
[23]  王京彬,徐新,新疆北部后碰撞构造演化与成矿,地质学报,2006(1).
[24]  陈桂华,李锦轶,杨天南,阿尔泰山南部线性花岗岩锆石SHEIMP U-Pb定年及其地质意义,中国地质,2009(5).
[25]  周刚,吴淦国,董连慧,张招崇,董永观,童英,何立新,应立娟,新疆准噶尔北东缘乌图布拉克岩体形成时代、地球化学特征及地质意义,岩石学报,2009(6).
[26]  周刚,张招崇,吴淦国,董连慧,贺永康,董永观,何立新,秦纪华,赵忠合,刘国仁,新疆准噶尔北东缘造山后伸展及陆壳生长:来自哈旦逊杂岩体的岩石学及地球化学的证据,地质学报,2009(3).
[27]  Pearce J A,Harris N B W,Tindle A G,Trace element discrimination diagrams for the tectonic interpretation of granitic rocks,Journal of Petrology,1984.
[28]  赵振华,王中刚,邹天人,阿尔泰花岗岩类REE及O、Pb、Sr、Nd同位素组成及成岩模型,北京:科学出版社,1993.
[29]  曾乔松,陈广浩,王核,单强,阿尔泰冲乎尔盆地花岗质岩类的锆石SHRIMP U-Pb定年及其构造意义,岩石学报,2007(8).
[30]  Yuan C,Sun M,Xiao W J,Accretionary orogenesis of the Chinese Altai:Insights from Palcozoic granitoids,Chemical Geology,2007.
[31]  杨富全,毛景文,闫升好,刘锋,柴凤梅,周刚,刘国仁,何立新,耿新霞,代军治,新疆阿尔泰蒙库同造山长花岗岩年代学、地球化学及其地质意义,地质学报,2008(4).
[32]  童英,阿尔泰造山带晚占生代花岗岩年代学、成因及其地质意义,北京:中国地质科学院,2006.
[33]  周刚,张招崇,罗世宾,何斌,王祥,应立娟,赵华,李爱红,贺永康,新疆阿尔泰山南缘玛因鄂博高温型强过铝花岗岩:年龄、地球化学特征及其地质意义,岩石学报,2007(8).
[34]  周刚,张招崇,王新昆,新疆玛因鄂博断裂带中花岗质糜棱岩的锆石U-Pb SHRIMP和黑云母40Ar-39Ar同位索年龄及地质意义,地质学报,2007(3).
[35]  Horn I,Rudnick R L,Mcdonough W F,Precise elemental and isotope ratio determination by simultaneous solution nebulization and laser ablation-ICPMS:Application to U-Pb geochronology,Chemical Geology,2000.
[36]  Ballard J R,Palin J M,Williams I S,Two ages of porphyry intrusion resolved for the super-giant Chuquicamata copper deposit of northern Chile by ELA.ICPMS and SHRIMP,Geology,2001.

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