大兴安岭北部凤凰山地区英云闪长岩地球化学特征与锆石U-Pb定年

doi:10.13278/j.cnki.jjuese.201605111

摘要/Abstract

摘要：

凤凰山地区位于大兴安岭北部额尔古纳地块和兴安地块过渡带，该区广泛分布着前寒武纪变质岩系组成的兴华渡口群古老块体。本次研究发现凤凰山地区内还有古老的侵入体——英云闪长岩，零星分布于前寒武纪结晶基底内。本文以凤凰山地区英云闪长岩为研究对象，进行了岩石的主、微量元素测试和LA-ICP-MS锆石U-Pb同位素定年。岩石地球化学特征显示，英云闪长岩属于过铝质钙碱性岩石系列岩石，富集Rb、K等大离子亲石元素（LILE），亏损Nb、P、Sr、Ta、Ti等高场强元素（HFSE），呈中等负铕异常（δEu=0.64~0.69），表现出火山弧花岗岩的特征。英云闪长岩的锆石呈长柱状，具有清晰的环带，显示出岩浆锆石的特征，其LA-ICP-MS锆石U-Pb年龄为（807.7±2.2）Ma，表明其侵位时代为新元古代。结合区域构造演化史，认为该地区新元古代英云闪长岩的形成受Rodinia超大陆裂解-碰撞影响，是额尔古纳地块和兴安地块过渡带地壳增生的产物。

关键词: 锆石U-Pb年龄, 地球化学, 英云闪长岩, 新元古代, 凤凰山地区, 大兴安岭北部

Abstract:

Fenghuangshan is located in the transition zone between Erguna block in the north part of Daxing'anling Erguna and Xing'an block, where the Neoproterozoic granites are widely developed. According to this study, we found an ancient intrusive tonalite scattered within the Precambrian crystalline basement in Fenghuangshan area. Taking the tonalite developed in the Fenghuangshan area as the study object, we conducted an analysis for its geochemistry and zircon LA-ICP-MS U-Pb dating. The geochemical characteristics show that the tonalite belongs to per-aluminous calc-alkaline rock series, and the trace element compositions are characterized by enrichment of large ionic lithophile elements (LILEs; e.g., Rb, K),depletion of high field strength elements (HFSEs, e.g., Nb, P,Sr,Ta and Ti), and medium negative Eu anomaly (δEu=0.64-0.69),the geochemical characteristic of volcanic arc granite. The zircons from tonalite occurred as columnar in shape with fine-scale oscillatory growth zoning, showing a magmatic origin for these zircons, yield a weighted mean age of (807.7±2.2)Ma, which indicate that tonalite formed in Neoprpterozoic. Combined with the evolvement history of regional tectonics, we inferred that the formation of the tonalite in Fenghuangshan area was affected by the breakup and collision of Rodinia supercontinent, which is the product of crustal accretion of Erguna and Xing'an block.

Key words: zircon U-Pb age, geochemistry, tonalite, Neoproterozoic, Fenghuangshan area, northern Daxing'anling

中图分类号:

P588.12

郭宇飞, 杨言辰, 韩世炯, 谈艳, 薄军委. 大兴安岭北部凤凰山地区英云闪长岩地球化学特征与锆石U-Pb定年[J]. 吉林大学学报(地球科学版), 2016, 46(5): 1406-1417.

Guo Yufei, Yang Yanchen, Han Shijiong, Tan Yan, Bo Junwei. Geochemistry and Zircon U-Pb Dating of the Tonalite from Fenghuangshan Area in Northern Daxing'anling[J]. Journal of Jilin University(Earth Science Edition), 2016, 46(5): 1406-1417.

参考文献

[1] 黑龙江地质矿产局.黑龙江区域地质志[M].北京:地质出版社,1993. Heilongjiang Bureau of Geology and Mineral Resources. Regional Geology of Heilongjiang Province[M]. Beijing:Geological Publishing House, 1993.

[2] 孙立新,任邦方,赵凤青,等.额尔古纳地块太平川巨斑状花岗岩的锆石U-Pb年龄和Hf同位素特征[J].地学前缘,2012,19(5):114-122. Sun Lixin, Ren Bangfang, Zhao Fengqing, et al. Zircon U-Pb Ages and Hf Isotope Characteristics of Taipingchuan Large Porphyritic Granite Pluton of Erguna Massif in the Great Xing'an Range[J]. Earth Science Frontiers, 2012, 19(5):114-122.

[3] 孙广瑞,李仰春,张昱. 额尔古纳地块基底地质构造[J].地质与资源,2002,11(3):129-139. Sun Guangrui, Li Yangchun, Zhang Yu. The Basement Tectonics of Ergun Massif[J]. Geology and Resources, 2002, 11(3):129-139.

[4] 徐美君,许文良,孟恩,等. 内蒙古东北部额尔古纳地区上护林-向阳盆地中生代火山岩LA-ICP-MS锆石U-Pb年龄和地球化学特征[J].地质通报,2011,30(9):1321-1338. Xu Meijun, Xu Wenliang, Meng En, et al. LA-ICP-MS Zircon U-Pb Chronology and Geochemistry of Mesozoic Volcanic Rocks from the Shanghulin-Xiangyang Basin in Ergun Area, Northeastern Inner Mongolia[J].Geological Bulletin of China,2011,30(9):1321-1338.

[5] 葛文春,吴福元,周长勇,等. 大兴安岭北部塔河花岗岩体的时代及对额尔古纳地块构造归属的制约[J].科学通报,2005,50(12):1239-1247. Ge Wenchun, Wu Fuyuan, Zhou Changyong, et al. Emplacement Age of the Tahe Granite and Its Constrains on Tectonic Nature of the Ergun Block in the Northern Part of the Da Hinggan Range[J].Chinese Science Bulletin, 2005, 50(12):1239-1247.

[6] 隋振民,葛文春,吴福元,等.大兴安岭东北部侏罗纪花岗质岩石的锆石U-Pb年龄、地球化学特征及成因[J].岩石学报,2007,23(2):461-480. Sui Zhenmin, Ge Wenchun, Wu Fuyuan, et al. Zircon U-Pb Ages, Geochemistry and Its Petrogenesis of Jurassic Granites in Northeastern Part of the Da Hinggan Mts[J]. Acta Petrologica Sinica,2007,23(2):461-480.

[7] 秦秀峰,郭原生,刘旭光,等.大兴安岭北部兴凯期花岗岩地球化学特征及构造意义[J].甘肃地质学报,2004,13(2):31-38. Qin Xiufeng, Guo Yuansheng, Liu Xuguang, et al. Geochemical Characteristics and Tectonic Significance the Xing Kaiian Granites from the North Daxing'anling[J]. Acta Geologica Gansu, 2004, 13(2):31-38.

[8] 苗来成,刘敦一,张福勤,等. 大兴安岭韩家园子和新林地区兴华渡口群和扎兰屯锆石SHRIMP U-Pb年龄[J].科学通报,2007,52(5):597-601. Miao Laicheng, Liu Dunyi, Zhang Fuqin, et al. Zircon SHRIMP U-Pb Age of the "Xinghuadukou Group" in Hanjiayuanzi and Xinlin Areas and the "Zhalantun Group" in Inner Mongolia, Da Hing'an Mountains[J]. Chinese Science Bulletin, 2007, 52(5):591-601.

[9] W V Boynton. Cosmochemistry of Rare Earth Elements:Meteorite Studies[C]//Henderson P. Rare Earth Element Geochemistry. Amsterdam:Elsevier, 1983:63-114.

[10] Sun S S, Mcdonough W F. Chemical and Isotopic Systematic Sod Ocean Basins:Implications for Mantle Composition and Processes[C]//Saunders A D, Norry M J. Magmatism in Ocean Basins. London:Spec Publ Geol Soc,1989:313-345.

[11] Koschek G. Origin and Significance of the SEM Cathodolumines-Cene from Zircon[J]. Journal of Microscopy, 1993,171:223-232.

[12] 表尚虎,郑卫政,周兴福. 大兴安岭北部锆石U-Pb年龄对额尔古纳地块构造归属的制约[J].地质学报,2012,86(8):1262-1272. Biao Shanghu, Zheng Weizheng, Zhou Xingfu. Zircon U-Pb Age of the North Da Hinggan Mts NE China and Its Constraint to Attribute of the Ergun Block[J]. Acta Geologica Sinica, 2012, 86(8):1262-1272.

[13] 武广. 大兴安岭北部区域成矿背景与有色、贵金属矿床成矿作用[D]. 长春:吉林大学,2006. Wu Guang. Metallogenic Setting and Metallogenesis of Nonferrous-Precious Metals in Northern Da Hinggan Moutain[D].Changchun:Jilin University,2006.

[14] 佘宏全,李进文,向安平,等.大兴安岭中北段原岩锆石U-Pb测年及其与区域构造演化关系[J]. 岩石学报,2012,28(2):571-594. She Hongquan, Li Jinwen, Xiang Anping, et al. U-Pb Ages of the Zircons from Primary Rocks in Middle-Northern Daxinganling and Its Implications to Geotectonic Evolution[J]. Acta Petrologica Sinica, 2012, 28(2):571-594.

[15] Wu Fuyuan, Sun Deyou, Ge Wenchun, et al. Geochro-nology of the Phanerozoic Granitoids in Northeastern China[J].Journal of Asian Earth Sciences,2011,41(1):1-30.

[16] 王五力,郭胜哲.中国东北古亚洲与古太平洋构造域演化与转换[J]. 地质与资源,2012,21(1):27-34. Wang Wuli, Guo Shengzhe. The Evolution and Transformation of Paleo-Asia and Paleo-Pacific Tectonic Domain of Northeast China[J]. Geology and Resources, 2012,21(1):27-34.

[17] 王中刚,于学元,赵振华.稀土元素地球化学[M].北京:科学出版社:1989:1-535. Wang Zhonggang, Yu Xueyuan, Zhao Zhenhua. Geochemistry of Rare Earth Element[M].Beijing:Science Press:1989:1-535.

[18] Pearce J A, Harris N B W, Tindle A G. Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks[J]. Journal of Petrology, 1984, 25(4):956-983.

[19] Gou Jun, Sun Deyou, Ren Yunsheng, et al. Petroge-nesis and Geodynamic Setting of Neoproterozoic and Late Paleozoic Magmatism in the Manzhouli-Erguna Area of Inner Mongolia, China:Geochronological, Geochemical and Hf Isotopic Evidence[J]. Journal of Asian Earth Sciences, 2013(67/68):114-137.

[20] Meert J G, Powell C M. Assembly and Break-up of Rodinia:Introduction to the Special Volume[J].Precambrain Research, 2001, 110(1/2/3/4):1-8.

[21] 郭进京,张国伟,陆松年,等.中国新元古代大陆拼合与Rodinia超大陆[J].高校地质学报,1999,5(2):147-156. Guo Jinjing, Zhang Guowei, Lu Songnian, et al. Neoproterozoic Continental Block Collage of China and Rodinia Supercontinent[J].China Academic Joural Electronic Publishing House,1999,5(2):147-156.

[22] 胡建,丘检生,王汝成,等.新元古代Rodinia超大陆裂解事件在扬子北东缘的最初响应:东海片麻状碱性花岗岩的锆石U-Pb年代学及Nd同位素制约[J].岩石学报,2007,23(6):1321-1333. Hu Jian, Qiu Jiansheng, Wang Rucheng, et al.Earliest Response of the Neoproterozoic Rodinia Break-Up in the Northeastern Yangtze Craton:Constraints from Zircon U-Pb Geochronology and Nd Isotopes of the Gneissic Alkaline Granites in Donghai Area[J]. Acta Petrologica Sinica, 2007,23(6):1321-1333.

[23] 张明,王忠,孟二根,等.内蒙古大兴安岭北部新元古代花岗岩岩石地球化学特征及构造意义[J].地质与资源,2006,15(2):98-106. Zhang Ming, Wang Zhong, Meng Ergen, et al. The Geochemistry of the Neoprotozoic Grainte in Northern Daxinganling and Its Tectonic Implications[J]. Geology and Mineral Resources, 2006, 15(2):98-106.

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