Geochronology, Geochemistry and Geological Implication of Jinnikegaiman Pluton in Western Kunlun
-
摘要: 精尼克盖曼南岩体岩性为中细粒二长花岗岩，锆石LA-ICP-MS U-Pb定年结果表明，二长花岗岩成岩年龄为（516.5±0.8）Ma，时代为早寒武世；岩石属于钙碱性系列准铝-过铝质花岗岩；轻稀土元素较为富集，轻、重稀土元素分馏明显，具有明显的负Eu异常；岩石相对富集Rb、K等大离子亲石元素，亏损Nb、Ta、P、Ti和HREE等高场强元素；为下地壳火成岩熔融形成。结合锆石定年结果及岩体产出的区域地质背景，研究认为精尼克盖曼南岩体是在后碰撞伸展拉张型裂谷环境下的产物；在早寒武世西昆仑造山带处于后碰撞伸展拉张背景。Abstract: The lithology of Jinnikegaiman pluton is mid-fine grained monzonitic granite.The zircon U-Pb dating indicate that the age of monzonitic granite is (516.5±0.8)Ma, belongs to Early Cambrian.This monzonitic granite belongs to aluminous-peraluminous granite of calc-alkaline series.It is enriched in light rare earth element, with obvious fractionation between LREE and HREE.It has slight negative Eu anomaly, which is enriched in Rb, K and other large-ion lithophile elements, with depletion of high field strength elements, such as Nb, Ta, P, Ti and HREE.It was derived from lower crust and formed by the melting of igneous rock.According to the zircon U-Pb dating and regional geological background, it's believed that this pluton was formed in the environment of rift valley of Post-COLG and the west Kunlun has experienced a Post-COLG extension environment in Early Cambrian.
-
Keywords:
- west kunlun /
- Cambrian /
- geochronology /
- geochemistry
-
-
任纪舜,王作勋,陈炳蔚,等.从全球看中国大地构造(中国及邻区大地构造图)[M].北京:地质出版社,1999. REN Jishun,WANG Zuoxun,CHEN Bingwei, et al.The Sinica Tectonics in Global View(The Geotectonic Map of China and Its Neighboring Area)[M].Beijing:Geological Publishing House, 1999.
姜春发,王宗起,李锦轶,等.中央造山带开合构造[M].北京:地质出版社,2000. JIANG Chunfa, WANG Zongqi, et al.Opening and closing tectonics in the Central Orogenic Belt[M].Beijing:Geological Publishing House, 2000.
李荣社,计文化,杨永成,等.昆仑山及邻区地质[M].北京:地质出版社,2008. LI Rongshe, JI Wenhua, YANG Yongcheng, et al.Geology of Kunlun Mountain and Adjacent Regions[M].Beijing:Geological Publishing House, 2008
刘敏,朱弟成,赵志丹,等.西藏冈底斯东部然乌地区早白垩世岩浆混合作用:锆石SHRIM PU-Pb年龄和Hf同位素证据[J].地学前缘,2009,16(2):152-160. LIU Min,ZHU Dicheng,ZHAO Zhidan, et al.Early Cretaceous magma mixing in Ranwu Area of Eastern Gandese Tibet:Evideuce from zircon SHRIMP U-Pb age and Hf isotopic composition[J].Earth Sczence Frontiers, 2009,16(2):152-160.
姜耀辉,芮行健,郭坤一,等.西昆仑造山带花岗岩形成的构造环境[J].地球学报,2000,21(1):23-25. JIANG Yaohui,RUI Xingjian,GUO Kunyi, et al.Tectonic Environments of Granitoids in the West Kunlun Orogenic Belt[J].Acta Geoscientia Sinica, 2000;21(1):23-25.
毕华,王中刚,王元龙,等.西昆仑造山带构造-岩浆演化史[J].中国科学:地球科学,1999,29(5):398-406. BI Bi,WANG Zhonggang,WANG Yuanlong, et al.The evolution of Tectonic and magma, western Kunlun[J].Science in China (Series D), 1999;29(5):398-406.
丁道桂,王道轩,刘伟新,等.西昆仑造山带与盆地[M].北京:地质出版社,1996. DING Daogui,WANG Daoxuan, LIU Weixin, et al.Western Kunlun Orogenic Beltand Basin[M].Beijing:Geological Publishing House,1996.
潘裕生.西昆仑山构造特征与演化[J].地质科学,1990,(3):224-232. PAN Yusheng.Tectonic features and evolution of the western Kunlun mountain region[J].Scientia Geologica Sinica, 1990,(3):224-232.
袁超,孙敏,周辉,等.西昆仑阿卡阿孜山岩体的年代、源区和构造意义[J].新疆地质,2003,21(1):37-45. YUAN Chao,SUN Min,ZHOU Hui, et al.Arkarz shan intrusive complex, western kunlun:age source and tectonic implications[J].Xinjiang Geology,2003;21(1):37-45.
方爱民,李继亮,刘小汉,等.新疆西昆仑库地混杂带中基性火山岩构造环境分析[J].岩石学报,2003,19(3):409-417. FANG Aimin,LI Jiliang,LIU Xiaohan, et al.Tectonic settings of the basic igneous rocks in the Kudi ophiolite zone of West Kunlun Mountains, Xingjiang Province[J].Acta Petrologica Sinica, 2003;19(3):409-417.
许志琴,李思田,张建新,等.塔里木地块与古亚洲/特提斯构造体系的对接[J].岩石学报,2011,27(1):1-22. XU Zhiqin,LI Sitian,ZHANG Jianxin, et al.Paleo-Asian and Tethyan tectonic systems with docking the Tarim block[J].Acta Petrologica Sinica, 2011;27(1):1-22.
侯可军,李延河,田有荣.LA-MC-ICP-MS锆石微区原位U-Pb定年技术[J].矿床地质,2009,28(4):481-492. HOU Kejun,LI Yanhe,TIAN Yourong.In situ U-Pb zircon dating using laser ablation-multi ion counting-ICP-MS[J].Mineral Deposits,2009;28(4):481-492.
吴元保,郑永飞.锆石成因矿物学研究及其对U-Pb年龄解释的制约[J].科学通报,2004,49(16):1589-1604. WU Yuanbao,ZHENG Yongfei.Genetic mineralogy of zircon and its constraint on the interpretation of U-Pb zircon ages[J].Chinese Science Bulletin, 2004;49(16):1589-1604.
肖庆辉,邓晋福,马大栓,等.花岗岩研究思维与方法[M].北京:地质出版社,2002. XIAO Qinghui, DENG Jinfu, MA Dashuan, et al.The Ways of Investigation on Granitoids[M].Beijing:Geological PublishingHouse, 2002.
崔建堂,王炬川,边小卫,等.西昆仑康西瓦北部冬巴克片麻状英云闪长岩锆石SHRIMP U-Pb测年[J].地质通报,2007,26(6):726-729. CUI Jiantang,WANG Juchuan,BIAN Xiaowei,et al.Zircon SHRIMP U-Pb dating of the Dongbake gneissic tonalite in northern Kangxiwar,West Kunlun[J].Geological Bulletin of China,2007,26(6):726-729.
韩芳林,崔建堂,计文化,等.西昆仑加里东期造山作用初探[J].陕西地质,2001,19(2):8-18. HAN Fanglin,CUI Jiantang,JI Wenhua, et al.Discussion of orogenics of the western kunlun mountains during the caledonian orogeny[J].Geology of Shanxi, 2001,19(2):8-18.
陆松年.新元古时期Rodinia超大陆研究进展述评[J].地质论评,1998,44(5):489-495. LU Songnian.A Review of Advance in the Research on the Neoproterozoic Rodinia Supercontinent[J].Geological Review,1998,44(5):489-495.
姜耀辉,芮行健,贺菊瑞,等.西昆仑山加里东期花岗岩类构造的类型及其大地构造意义[J].岩石学报,1999,15(1):105-115. JIANG Yaohui,RUI Xingjian,HE Jurui, et al.Tetonic type of Caledonian granitoids and tectonic significance in the West Kunlun Mts[J].Acta Petrologica Sinica, 1999;15(1):105-115.
王元龙,王中刚,李向东,等.西昆仑加里东期花岗岩带的地质特征[J].矿物学报,1995,15(4):457-461. WANG Yuanlong,WANG Zhonggang,LI Xiangdong, et al.Geologica features of the caledonian granite zone In the west kunlun area[J].Acta Mineralogica Sinica, 1995,15(4):457-461.
王建平.西昆仑塔什库尔干混杂岩的地质特征及其大地构造意义[J].地质通报,2008,27(12):2057-2066. WANG Jianping.Geological features and tectonic significance of melange zone in the Taxkorgan area,West Kunlun[J].Geological Bulletin of China,2008,27(12):2057-2066.
韩芳林,崔建堂,计文化,等.西昆仑其曼于特蛇绿混杂岩的发现及其地质意义[J].地质通报,2002,21(8):573-578. HAN Fanglin,CUI Jiantang,JI Wenhua, et al.Discovery of the Qimanyute ophiolite in the West Kunlun and its geological significance[J].Geological Bulletin of China, 2002,21(8):573-578.
肖序常,王军.西昆仑-喀喇昆仑及其邻区岩石圈结构、演化中几个问题的探讨[J].地质论评,2004,50(3):285-294. XIAO Xuchang,WANG Jun.Discussion on the Lithospheric Structure and Evol ution of the West Kunlun Mountains-Karakorum Mountains and Their Ad jacent Areas[J].Geological Review, 2004,50(3):285-294.
肖序常,王军,苏犁,等.再论西昆仑库地蛇绿岩及其构造意义[J].地质通报,2003,22(10):745-750. XIAO Xuchang,WANG Jun,SU Li, et al.A further discussion of the Kuda ophiolite significance,West Kunlun,and its tectonice[J].Geological Bulletin of China,2003, 22(10):745-750.
张占武,崔建堂,王炬川,等.西昆仑康西瓦西北部库尔良早古生代角闪闪长岩花岗闪长岩锆石SHRIMP U-Pb测年[J].地质通报,2007,26(6):720-725. ZHANG Zhanwu,CUI Jiantang,WANG Juchuan, et al.Zircon SHRIMP U-Pb dating of Early Paleozoic amphiholite and granodiorite in Korliang,Kangxiwar,West Kunlun[J].Geological Bulletin of China,2007,26(6):720-725.
郑玉壮,杨维文,王腾.新疆西昆仑早古生代侵入岩地球化学特征及地质意义[J].西北地质,2013,46(4):57-65. ZHENG Yuzhuang,YANG Weiwen,WANG Teng.Geochemistry and Geological Significance of Intrusive Rocks of Early Paleozoic in Western Kunlun,Xinjiang[J].Northwestern Geology, 2013,46(4):57-65.
王超,刘良,何世平,等.西昆仑早古生代岩浆作用过程:布隆花岗岩地球化学和锆石U-Pb-Hf同位素组成研究[J].地质科学,2013,48(4):997-1014. WANG Chao,LIU Liang,HE Shiping,et al.Early Paleozoic magmatism in west Kunlun:Constraints from geochemical and zircon U-Pb-Hf isotopic studies of the Bulong granite[J].Chinese Journal of Geology, 2013,48(4):997-1014.
MATTERNF and SCHNEIDER W.Suturing of the Proto-and Paleo-Tethys oceans in the western Kunlun(Xinjiang,China)[J].Journal of Asian Earth Sciences,2000,18(6):637-650.
LIU Y S,HU Z C,GAO S,et al.In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J].Chemical Geology,2008,100(4)34-43.
HOSKIN PWO and BLACK LP.Metamorphic zircon formation by solid-state recrystallization of protolith igneous zircon[J].Journal of Metamorphic Geology,2000,18(4):423-439.
BEA F,ARZAMASTSEV A,MONTERO P, et al.Anomalous alkaline rocks of Soustov,Kola:Evidence of mantle-derived metasomatic fluids affecting crustal materials[J].Contributions to Mineralogy and Petrology,2001,140(5):554-566.
MCDONOUGH W F and SUN S S.The composition of the earth[J].Chemical Geology, 1995, 120 (3-4):223-253.
TAYLOR S R, MCLENNAN S M.The Continental Crust:Its Composition and Evolution, An Examination of the Geochemical Record Preserved in Sedimentary Rocks[J].Journal of Geology, 1985, 94(4):632-633.
计量
- 文章访问数: 2211
- HTML全文浏览量: 0
- PDF下载量: 2370
下载:
