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地球学报  2010 

蒙古国呼勒德地区正长岩锆石SHRIMP铀-铅年龄及其地质意义

DOI: 10.3975/cagsb.2010.03.10

Keywords: 碱性正长岩,锆石SHRIMP年龄,呼勒德稀土元素矿化区,印支期,中南蒙古

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Abstract:

呼勒德稀土元素矿化区位于蒙古国中戈壁省南部,区内稀土元素和金矿(化)点星罗棋布,为蒙古中南部最重要的金属矿化集中区之一。在所有上述矿床(点)中,稀土元素矿化在下二叠统火山-沉积岩内呈似层状、脉状和透镜体状产出,并且与呼勒德碱性正长岩株具有密切空间分布关系。本次研究对呼勒德正长岩进行了锆石SHRIMP铀-铅同位素年龄测定,所获同位素年龄值为(214.3±2.5)Ma,MSWD值为0.52,属中生代印支期。根据上述同位素年代学数值,同时结合其他地质与地球化学证据,可以推测,中生代时期,受古陆块内部构造应力调整作用影响,呼勒德地区一带及东西两侧曾发生过强烈构造-岩浆活动,并且形成碱性正长岩株及相关的稀土元素矿(化)点。印支期碱性岩浆活动不仅为稀土元素矿(化)点的形成提供了物质、动力和热力来源,而且是成矿流体对流循环的“发动机”。对比分析结果表明,呼勒德碱性正长岩体的形成时间与南蒙古鲁金郭勒碱性花岗斑岩脉及相关稀土元素矿床形成时代大体相似,它们均是地壳演化特定阶段混源(壳、幔源)岩浆活动的产物。

References

[1]  内蒙古自治区地质研究队,内蒙古与蒙苏边境两侧主要金属成矿带对比及成矿条件研究,内蒙古地质矿产局,1991.
[2]  王荃;刘雪亚;李锦轶,中国华夏与安加拉古陆间的板块构造,北京:北京大学出版社,1991.
[3]  聂凤军;江思宏;张义,中蒙边境中东段金属矿床成矿规律和找矿方向,北京:地质出版社,2007.
[4]  聂凤军;陈宣华;江思宏;杨农,"巴尔喀什-准噶尔-南蒙古成矿带整体研究与勘查技术集成",2010.
[5]  DEJIDMAA G;BADARCH G,Summary of pre-accretionary and accretionary metallogenic belts of Mongolia,London,2005.
[6]  CLAESSON S;VETRIN V;BAYANOVA T,U-Pb zircon ages from a Devonian carbonatite dyke,Kola Peninsula,Russia:a record of geological evolution from the Archean to the Paleozoic,Lithos,2000.
[7]  CHEN Qi;QIU Gan-lin;DU Yu-shen;XUE Lin-fu,ZHOU He-ping,Evolution of Bainaimiao-Wenduermiao regional structure and Paleo-plate tectonics in the Northern margin of North China plate,Journal of Changchun University,1992(Supp).
[8]  陈琦;仇甘霖;杜玉申;薛林福 周和平,白乃庙-温都尔庙区域构造及华北板块北缘构造演化,长春地质学院学报,1992(增刊).
[9]  肖伟;王义天;江思宏;侯万荣.南蒙古及邻区地质矿产简图及地形地貌特点[J].地球学报,2010(03)
[10]  Zhang Y P;Tang K D,Pre-Jurassic tectonic evolution of intercontinental region and the suture zone between the North China and Siberian platforms,Journal of Southeast Asian Earth Sciences? ,1989, 3(1-4).
[11]  XU Bei;CHEN Bin,Structure and its evolution of Mid-Paleozoic orogenic belt in between North China and Siberian plates,northern Inner Mongolia,Science in China(Series D),1997(03).
[12]  XIAO Wen-jiao;WINDLEY B F;HAO Jie,Accretion leading to collision and the Permian Solonker suture,Inner Mongolia,China:Termination of the central Asian orogenic belt,Tectonics,2003(06).
[13]  XIAO Wei;WANG Yi-tian;JIANG Si-hong;HOU Wan-rong.Explanatory Notes for the Simplified Geology and Mineral Resource Map and Typical Geographical and Topographic Features of Southern Mongolian and Its Neighboring Areas[J].Acta Geoscientica Sinica,2010(03)
[14]  WILLIAMS I S;CLAESSON S,Isotope evidence for the Precambrian province and Caledonian metamorphism of high grade paragneiss from the Seve Nappes,Scandinavian Caledonides,II Ion microprobe zircon U-Th-Pb,Contributions to Mineralogy & Petrology,1987.
[15]  WANG Q;LIU X-Y;LI J-Y,Plate Tectonics between Cathaysia and Angaraland in China,Beijing,Peking Univ.Publ.House,1991.
[16]  STEIGER R H;JAGER E,Subcommission on geochronology:Convention or the use of decay constants in geo-and cosmochronology,Earth and Planetary Science Letters,1997.
[17]  SONG Biao;ZHANG Yu-hai;WAN Yu-sheng,Mount making and procedure of the SHRIMP dating,Geological Review,2002(sup).
[18]  SHI Y-R;LIU D-Y;ZHANG Q;JIAN P ZHANG F-Q MIAO L-C ZHANG L-Q.SHRIMP U-Pb zircon dating of Triassic A-type granites in Sonid Zuoqi,Central Inner Mongolia,China and its tectonic implication[J].Geological Bulletin of China,2007(02)
[19]  PATERSON B A;STEPHENS W E;ROGERS G 1992,The nature of zircon inheritance in two granite plutons,Transactions of the Royal Society of Edinburgh:Earth Sciences,.
[20]  宋彪;张玉海;万渝生,锆石SHRIMP样品靶制作,年龄测定及有关现象讨论,地质论评,2002(增刊).
[21]  石玉若;刘敦一;张旗;简平 张福勤 苗来城 张履桥.内蒙古中部苏尼特左旗地区三叠纪A型花岗岩锆石SHRIMP铀-铅年龄及其区域构造意义[J].地质通报,2007(02)
[22]  洪大卫;王试光;谢锡林;长季生.兴蒙造山带正ε(Nd,t)值花岗岩的成因和大陆地壳生长[J].地学前缘,2000(02)
[23]  NIE Feng-jun;JIANG Si-hong;ZHANG Yi;BAI Da-ming,Metallogeny and ore prospecting of ore deposits occurring along the border region of China and Mongolia,北京:地质出版社,2007.
[24]  NIE Feng-jun;CHEN Xuan-hua;JIANG Si-hong;Yang Nong,"Annual report for the integrated studies on Balchas-Junggar-South Mongolia metallogenic belt and exploration techniques",2010.
[25]  MUNKHTSENGEL B;IIZUMI SH,Petrology and geochemistry of the Lugiin Gol nepheline syenite complex,South Mongolia,London,2005.
[26]  Ministry of Industry and Trade,Mongolia(MITM),Mongolia:Investors\' Forum 2002,2002.
[27]  LUDWIG K R,User\'s manual for isoplot 3,0,a geochronological toolkit for Microsoft Excel,Berkely:Berkely Geochronological Center Special Publication,2003.
[28]  LIEGEOIS J P;NAVEZ J;HERTOGEN J,Contrasting origin of post-collision high-K.cala-alkaline and shoshonitic versus alkaline and peralkaline grantoids,the use of sliding normalization,Lithos,1998.
[29]  HONG D W;WANG S G;XIE X L;ZHANG J S,Genesis of positive ε(Nd,t)granitoids in the Da Hinggan Mts.Mongolia orogenic belt and growth of continental crust,Earth Science Frontiers(Bulletin of China University of Geosciences Beijing),2000(02).
[30]  Geological Research Party of Inner Mongolian Autonomous Region,Comparison studies on geological setting of major metallogenic belts along China-Mongolia-Russian border[Internal Geological Report(No,89-3)],1991.
[31]  ENKHBUREN T,Geology and mineral exploration of rare earth element,gold and uranium deposits occurring in the Khuld district[Minvesco LLL unpublished mineral exploration report],2008.
[32]  DOSTAL J;CHATTERJEE A K,Contrasting behaviour of Nb/Ta and Zr/Hf ratios in a peraluminous granitic pluton(Nova Scotia,Canada),Chemical Geology,2000.
[33]  BADARCH G;CUNNINGHAM W D;WINDLEY B F,A new terrane subdivision for Mongolia:implications for the Phanerozoic crustal growth of central Asia,Journal of Asian Earth Sciences,2002.
[34]  徐备;陈斌,内蒙古北部华北板块与两伯利亚板块之间中古生代造山带的结构及演化,中国科学d辑,1997(03).

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