内蒙古扎赉特旗神山铁铜矿床成岩成矿年代学及其地质意义

doi:10.13278/j.cnki.jjuese.20170336

摘要/Abstract

摘要： 内蒙古神山铁铜矿床是大兴安岭中段具有代表性的矽卡岩型铁铜矿床。笔者就该矿床成矿岩体的地球化学及锆石LA-ICP-MS U-Pb年代学开展相关研究。研究表明：矿区中与成矿有关的伊力特岩体岩石类型为英云闪长岩，属I型花岗岩类，铝过饱和，高钾钙碱性系列和磁铁矿系列；岩石富集轻稀土（LREE）、大离子亲石元素（LILE），亏损高场强元素（HFSE），铕异常不明显（δEu为0.97~1.17），存在弱铈异常（δCe为0.86~0.92）；锆石LA-ICP-MS U-Pb测年显示，与成矿有关的伊力特岩体形成于晚侏罗世（（155.3±1.3）Ma），因此推测神山铁铜矿床成矿时代为晚侏罗世。综合研究认为神山铁铜矿床形成于地壳加厚和构造活化的构造环境。

关键词: 神山铁铜矿床, 锆石U-Pb年龄, 地球化学, 大兴安岭中段

Abstract: The Shenshan Fe-Cu deposit is the only skarn Fe-Cu deposit discovered in the Middle Great Hinggan Mountains, Inner Mongolia. We focused on the geochemistry features and zircon LA-ICP-MS U-Pb chronology of the intrusions related to the mineralization of the deposit. The Yilite intrusion in Shenshan district is of tonalite, potash rich calc-alkali and magnetite series. The tonalite is characterized by peraluminous, enriched in light rare earth elements, large ion lithophile elements, depleted of high field-strength elements. Its Ce anomalies (δCe) are 0.86-0.92 with no Eu anomalies (δEu of 0.97-1.17). The Zircon LA-ICP-MS U-Pb yields a concordant age of (155.3±1.3) Ma, which reveals that the Yilite intrusion formed in Late Jurassic. The results also show that the Shenshan Fe-Cu deposit was mineralized in Late Jurassic. The geochemistry characteristics of the Yilite intrusion reveal a tectonic setting of thicken crust and tectonic activation in Late Jurassic.

Key words: Shenshan Fe-Cu deposit, zircon U-Pb ages, geochemistry, Middle Great Hinggan Mountains

中图分类号:

P618

吕骏超, 舒广龙, 张德宝, 赵岩, 刘桂香, 毕中伟. 内蒙古扎赉特旗神山铁铜矿床成岩成矿年代学及其地质意义[J]. 吉林大学学报(地球科学版), 2018, 48(6): 1683-1695.

Lü Junchao, Shu Guanglong, Zhang Debao, Zhao Yan, Liu Guixiang, Bi Zhongwei. Geochronology and Metallogenic Epoch of Shenshan Fe-Cu Deposit in Zhalaite County, Inner Mongolia and Its Geological Significance[J]. Journal of Jilin University(Earth Science Edition), 2018, 48(6): 1683-1695.

参考文献

[1] 肖克炎,邢树文,丁建华,等.全国重要固体矿产重点成矿区带划分与资源潜力特征[J]. 地质学报, 2016, 90(7):1269-1280. Xiao Keyuan, Xing Shuwen, Ding Jianhua, et al. Division of Major Mineralization Belts of China's Key Solid Mineral Resources and Their Mineral Resource Potential[J]. Acta Geologica Sinica, 2016,90(7):1269-1280.
[2] 刘军,毛景文,武广,等.大兴安岭北段岔路口斑岩钼矿岩浆锆石U-Pb年龄及其地质意义[J]. 地质学报,2013,87(2):208-226. Liu Jun, Mao Jingwen, Wu Guang, et al. Zircon U-Pb Dating for the Magmatic Rocks in the Chalukou Porphyry Mo Deposit in the Northern Great Xing'an Range,China,and Its Geological Signtificance[J]Acta Geologica Sinica,2013,87(2):208-226.
[3] 白令安.大兴安岭中北部热液铜矿床的成矿机制与资源预测[D].长春:吉林大学,2013. Bai ling'an. Study on Metallogenic Mechanism and Resource Forecast of Hydrothermal Cu Deposits in the Central and North of the Great Xing'an Range,NE China[D]. Changchun:Jilin University,2013.
[4] 谢俊山,路跃军,于广程.内蒙古自治区扎赉特旗神山矽卡岩型铁铜矿床地质特征探讨[J].内蒙古科技与经济, 2011(24):52. Xie Junshan, Lu Yuejun, Yu Guangcheng. Discussions on Geological Features of the Shenshan Skarn Fe-Cu Deposit in Zhalaite County, Inner Mongolia[J].Inner Mongolia Scientech and Economy, 2011(24):52.
[5] 周建波,石爱国,景妍.东北地块群:构造演化与古大陆重建[J]. 吉林大学学报(地球科学版),2016,46(4):1042-1055. Zhou Jianbo, Shi Aiguo, Jing Yan. The Combined NE China Blocks:Tectonic Evolution and Supercontinent Reconstructions[J].Jornal of Jilin University(Earth Science Edition),2016,46(4):1042-1055.
[6] 郭宇飞,杨言辰,韩世炯,等.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):1407-1417. Guo Yufei, Yang Yanchen, Han Shijiong, et al. Geochemistry and Zircon U-Pb Dating of the Tonalite from Fenghuangshan Area in Daxing'anling[J]. Journal of Jilin University(Earth Science Edition),2016,46(5):1407-1417.
[7] Elhlou S,Belousova E A,Griffin W L,et al.Trace Element and Isotopic Composition of GJ-Red Zircon Standard by Laser Ablation[J].Geochimicaet Cosmochimica Acta,2006,70(18):158.
[8] Slama J,Kosler J,Condon D J,et al.Plesovice Zircon:A New Natural Reference Material for U-Pb and Hf Isotopic Microanalysis[J].Chemical Geology,2008,249:1-35.
[9] Hugh R.R. Using Geochemical Data:Evaluation, Presentation, Interpretation[M]. Edinburgh:Longman Pearson Education Limited,1993:352.
[10] 周志广,柳长峰,於炀森,等.中华人民共和国区域地质调查报告1:250000乌兰浩特市幅(L51C002002)[R].沈阳:中国地质调查局沈阳地质调查中心,2014. Zhou Zhiguang, Liu Changfeng, Yu Yangsen, et al. 1:250000 Wulanhaote City Regional Geological Survey Report, PRC (L51C002002)[R]. Shenyang:Shenyang Center of Geological Survey,China Geological Survey, 2014.
[11] 刘城先. 内蒙布敦化铜矿成矿系列和成矿模式[J]. 长春工程学院学报,2001, 2(4):30-32. Liu Chengxian. The Mineralization Series and Models of Budunhua Copper Mine Inner Mongolia[J]. Journal of Changchun Institute of Technology (Natural Science Edition),2001,2(4):30-32.
[12] 武新丽,毛景文,周振华,等.大兴安岭中南段布敦化铜矿床H-O-S-Pb同位素特征及成矿指示[J].中国地质,2012,39(6):1812-1819. Wu Xinli, Mao Jingwen, Zhou Zhenhua, et al. H-O-S-Pb Isotopic Components of the Budunhua Cu Deposit in the Middlesouth Part of the Da Hinggan Mountains and Their Implications for the Oreforming Process[J].Geology in China,2012,39(6):1812-1819.
[13] 武新丽,毛景文,周振华. 大兴安岭中南段布敦化铜矿床金鸡岭矿段流体包裹体研究[J].矿床地质,2014,33(1):210-222. Wu Xinli, Mao Jingwen, Zhou Zhenhua. Fluid Inclusion Study of Jinjinling Ore Block in Budunhua Cu Deposit Along Middle-South of Da Hinggan Mountains[J].Mineral Deposits,2014,33(1):210-222.
[14] Castillo P R.埃达克岩成因回顾[J]. 科学通报,2006,51(6):617-627. Castillo P R. Retrospection of Adakite Origin[J].Chinese Science Bulletin,2006,51(6):617-627.
[15] Castillo P R.Adakite Petrogenesis[J].Lithos,2012(134/135):304-316.
[16] 张旗,王焰,李承东,等.花岗岩的Sr-Yb分类及其地质意义[J]. 岩石学报,2006,22(9):2249-2269. Zhang Qi, Wang Yan, Li Chengdong, et al. Granite Classification on the Basis of Sr and Yb Contents and Its Implications[J].Acta Petrologica Sinica,2006,22(9):2249-2269.
[17] 赵书跃,韩彦东,朱春燕,等.大兴安岭火山喷发带北段中性、中酸性火山岩地球化学特征及其地质意义[J].地质力学学报,2004,10(3):276-287. Zhao Shuyue, Han Yandong, Zhu Chunyan, et al.Geochemical Characteristics and Geological Significance of Intermediate and Intermediate-Acid Rocks in the Northern Sector of the Da Hinggan Volcanic Eruption Eone[J].Journal of Geomechanics,2004,10(3):276-287.
[18] 孙德有,吴福元,张艳斌,等.西拉木伦河-长春-延吉板块缝合带的最后闭合时间:来自吉林大玉山花岗岩体的证据[J].吉林大学学报(地球科学版),2004,32(2):174-181. Sun Deyou, Wu Fuyuan, Zhang Yanbin, et al. The Final Closing Time of the West Lamulun River-Changchun-Yanji Plate Suture Zone-Evidence from the Dayushan Granitic Pluton,Jilin Province[J].Jornal of Jilin University(Earth Science Edition),2004,32(2):174-181.
[19] 李锦轶,高立明,孙桂华,等.内蒙古东部双井子中三叠世同碰撞壳源花岗岩的确定及其对西伯利亚与中朝板块碰撞时限的约束[J]. 岩石学报,2007,23(3):565-582. Li Jinyi, Gao Liming, Sun Guihua, et al. Shuangjingzi Middle Triassic Syn-Collisional Crust-Derived Granite in the East Inner Mongolia and Its Constraint on the Timing of Collision Between Siberian and Sino-Korean Paleo-Plates[J].Acta Petrologica Sinica,2007,23(3):565-582.
[20] Donskay T V, Gladkochub D P, Mazukabzov A M, et al. Late Paleozoic-Mesozoic Subduction-Related Magmatism at the Southern Margin of the Siberian Continent and the 150 Million-Year History of the Mongol-Okhotsk Ocean[J].Journal of Asian Earth Sciences,2013,62:79-97.
[21] Pecford N, Atherton M. Na-Rich Partialmelts from Newly Underplated Basaltic Crust:The Cordillera Blanca Batholith, Peru[J]. Journal of Petrology, 1996, 37(6):1491-1521.
[22] Norman M D, Leeman W P, Mertzman S A. Granites and Rhyolites from the Northwestern U.S.A.:Temporal Variation in Magmatic Processes and Relations to Tectonic Setting[J]. Transactions of the Royal Society of Edinburgh:Erath Sciences, 1992, 83:71-81.
[23] Wolde B, Team G-G G. Tonalitic-Trondhjemite-Granitegenesis by Partialmelting Ofnewly Underplated Basaltic Crust:An Example of the Neoproterozoic Birbir Magmatic Arc, Western Ethionpia[J]. Precambrian Research,1996,76(1):3-14.
[24] 李伍平,李献华,路凤香.辽西中侏罗世高Sr低Y型火山岩的成因及地质意义[J]. 岩石学报, 2001, 17(4):523-532. Li Wuping, Li Xianhua, Lu Fengxiang. Genesis and Geological Significance for the Middle Jurassic High Sr and Low Y Type Volcanlc Rocks in Fuxin Area of West Liaoning[J].Acta Petrologica Sinica,2001,17(4):523-532.

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