内蒙古巴彦都兰铜矿地质特征及矿床成因——岩石地球化学、锆石U-Pb年代学及Hf同位素证据

现代地质 ›› 2017, Vol. 31 ›› Issue (06): 1095-1113.

内蒙古巴彦都兰铜矿地质特征及矿床成因——岩石地球化学、锆石U-Pb年代学及Hf同位素证据

余超¹(), 柳振江¹(), 宓奎峰¹, 王常波², 张杰², 王建平¹, 刘家军¹, 张梅³

1.中国地质大学(北京) 地球科学与资源学院,北京 100083
2.锡林郭勒盟同仁矿业有限责任公司,内蒙古锡林浩特 026000
3.内蒙古自治区地质调查院,内蒙古呼和浩特 010020

收稿日期:2017-03-15 修回日期:2017-07-07 出版日期:2017-12-10 发布日期:2017-12-25
通讯作者: 柳振江,男,讲师,博士,1983年出生,矿床学专业,主要从事区域成矿学研究。Email:lzj@cugb.edu.cn。
作者简介:余超,男,硕士研究生,1993年出生,矿物学、岩石学、矿床学专业,主要从事矿床学与矿床地球化学研究。Email:yuchao0927@yeah.net。
基金资助:
内蒙古自治区地质勘查基金项目(2014-01-YS01);中国地质调查局地质矿产资源调查评价专项(1212011220923);中国地质调查局新兴产业资源战略调查评价专项工程项目(1212011220673)

U-Pb Zircon, Geochemical and Hf Isotopic Constraints on Origin of the Bayandulan Copper Deposit, Inner Mongolia, China

YU Chao¹(), LIU Zhenjiang¹(), MI Kuifeng¹, WANG Changbo², ZHANG Jie², WANG Jianping¹, LIU Jiajun¹, ZHANG Mei³

1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
2. Xilingol League Tongren Mining Co., Ltd, Xilinhot, Inner Mongolia 026000, China
3. Institute of Geological Survey of Inner Mongolia Autonomous Region, Huhhot, Inner Mongolia 010020, China

Received:2017-03-15 Revised:2017-07-07 Online:2017-12-10 Published:2017-12-25

摘要/Abstract

摘要：

巴彦都兰铜矿是内蒙古二连浩特—东乌旗成矿带近年来新发现的一处中—高温热液脉型铜多金属矿床。通过对矿区内与成矿关系密切的花岗岩岩体开展同位素年代学、岩石地球化学和Hf同位素测试,据此探讨了该矿床的成因机制。分析结果显示,黑云母二长花岗岩LA-ICP-MS锆石U-Pb年龄为(300.2±2.2) Ma和(300.0±2.0) Ma;具有富硅、高钾钙碱性、弱过铝质,富集轻稀土元素及Rb、K等大离子亲石元素,亏损Sr、Nb、Ta等高场强元素的特征;锆石Hf同位素ε_Hf(t)=6.1~10.7,T_DM2=632~924 Ma,表现出洋壳俯冲形成的新生下地壳部分熔融的特征。综合研究认为,巴彦都兰铜矿形成的大地构造背景处于晚石炭世—早二叠世二连—贺根山洋盆闭合、区域构造环境逐渐由挤压转为后碰撞的伸展环境,在此期间碰撞后的岩石圈拆沉作用以及拉张机制下上涌的地幔物质使得新生下地壳得到再活化,产生的混合有基性幔源物质的酸性岩浆体系为成矿系统提供了主要成矿物质与流体。

关键词: 巴彦都兰铜矿, 锆石U-Pb年代学, Hf同位素, 后碰撞构造环境, 二连浩特—东乌旗多金属成矿带, 内蒙古

Abstract:

The Bayandulan high-mesothermal vein-type copper deposit is a newly discovered deposit in the Erenhot-East Ujimqin Banner metallogenic belt. In this paper, the authors present the new results of zircon laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) U-Pb dating, rock geochemistry and in-situ Hf isotopic analyses of biotite monzogranite from the deposit. These data provide insights into the timing as well as the mineralization of the Bayandulan deposit. The LA-ICP-MS U-Pb dating yields the crystallization ages of (300.2±2.2) Ma and (300.0±2.0) Ma for biotite monzogranite. The rock geochemistry of the granite is rich in Si, high potassium calc-alkali, weakly peraluminous, together with highly enriched the light rare earth element (LREE), Rb, K and other large-ion lithophile element (LILE), depleted Sr, Nb, Ta and other high field-strength element (HFSE). The granite has high positive ε_Hf(t) values of 6.1-10.7 and two-stage model ages (T_DM2) of 632-924 Ma, which reveals that granites are mainly derived from the partial melting of young accreted lower crust converted from the subduction of oceanic crust. Based on these analytical results, we inferred that the tectonic setting of the Bayandulan deposit has been entered into the post-orogenic stage and gradually turned to widely extension setting, since the Hegenshan back-arc basin closed between Late Carboniferous and Early Permian. During this period, the lithosphere delamination effect after collision and the upwelling of the mantle material under tension mechanism made young accreted lower crust reactivation, then acidic magma mixed with mantle source material, the emplacement of the magma brought sufficient metal elements and hydrothermal fluids, which in the end formed the Bayandulan copper deposit.

Key words: Bayandulan copper deposit, zircon U-Pb geochronology, Hf isotope, post-collisional setting, Erenhot-East Ujimqin Banner metallogenic belt, Inner Mongolia

中图分类号:

P618.41
P597

余超, 柳振江, 宓奎峰, 王常波, 张杰, 王建平, 刘家军, 张梅. 内蒙古巴彦都兰铜矿地质特征及矿床成因——岩石地球化学、锆石U-Pb年代学及Hf同位素证据[J]. 现代地质, 2017, 31(06): 1095-1113.

YU Chao, LIU Zhenjiang, MI Kuifeng, WANG Changbo, ZHANG Jie, WANG Jianping, LIU Jiajun, ZHANG Mei. U-Pb Zircon, Geochemical and Hf Isotopic Constraints on Origin of the Bayandulan Copper Deposit, Inner Mongolia, China[J]. Geoscience, 2017, 31(06): 1095-1113.

图/表 18

参考文献 75

[1]	童英, 洪大卫, 王涛, 等. 中蒙边境中段花岗岩时空分布特征及构造和找矿意义[J]. 地球学报, 2010, 31(3): 395-412.
[2]	李可, 张志诚, 冯志硕, 等. 兴蒙造山带中段北部晚古生代两期岩浆活动及其构造意义[J]. 地质学报, 2015, 89(2): 272-288.
[3]	CHENG Y, TENG X, LI Y, et al. Early Permian East-Ujimqin mafic-ultramafic and granitic rocks from the Xing’an-Mongolian Orogenic Belt, North China: Origin, chronology, and tectonic implications[J]. Journal of Asian Earth Sciences, 2014, 96: 361-373. DOI URL
[4]	赵一鸣, 王大畏, 张德全, 等. 内蒙古东南部铜多金属成矿地质条件及找矿模式[M]. 北京: 地震出版社, 1994: 1-234.
[5]	赵一鸣, 张德全, 徐志刚. 大兴安岭及其邻区铜多金属矿床成矿规律与远景评价[M]. 北京: 地震出版社, 1997: 1-318.
[6]	聂凤军, 江思宏, 张义, 等. 中蒙边境中东段金属矿床成矿规律和找矿方向[M]. 北京: 地质出版社, 2007: 1-574.
[7]	ZHANG W, NIE F, LIU S, et al. Characteristics and genesis of mineral deposits in East Ujimqin Banner, western segment of the Great Xing’an Mountains, NE China[J]. Journal of Asian Earth Sciences, 2015, 97: 459-471. DOI URL
[8]	王建平. 内蒙古东乌旗铜、银多金属成矿带成矿类型分析[J]. 矿产与地质, 2003, 17(2): 132-135.
[9]	王守光, 黄占起, 苏新旭, 等. 一条值得重视的跨国境成矿带——南戈壁—东乌旗铜多金属成矿带[J]. 地学前缘, 2004, 11(1): 249-255.
[10]	聂凤军, 江思宏, 白大明, 等. 蒙古国南部及邻区金属矿床类型及其时空分布特征[J]. 地球学报, 2010, 31(3):267-288.
[11]	张万益, 聂凤军, 刘树文, 等. 大兴安岭南段西坡金属矿床特征及成矿规律[J]. 中国地质, 2013, 40(5): 1583-1599.
[12]	常春郊, 王治华, 王梁, 等. 内蒙东乌珠穆沁旗地区多金属矿床类型与成矿规律[J]. 矿产与地质, 2014(5): 536-545.
[13]	张万益, 聂凤军, 刘妍, 等. 内蒙古东乌旗吉林宝力格银(金)矿床地质特征及成因探讨[J]. 矿物学报, 2007, 27(s1): 178-180.
[14]	张万益. 内蒙古东乌珠穆沁旗岩浆活动与金属成矿作用[D]. 北京: 中国地质科学院, 2008: 1-169.
[15]	JIANG S H, BAGAS L, HU P, et al. Zircon U-Pb ages and Sr-Nd-Hf isotopes of the highly fractionated granite with tetrad REE patterns in the Shamai tungsten deposit in eastern Inner Mongolia, China: Implications for the timing of mineralization and ore genesis[J]. Lithos, 2016, 261: 322-339. DOI URL
[16]	胡朋, 聂凤军, 赫英, 等. 内蒙古沙麦岩体:正ε_Nd(t)值的过铝质花岗岩[J]. 岩石学报, 2006, 22(11): 2781-2790.
[17]	许立权, 陈志勇, 陈郑辉, 等. 内蒙古东乌旗朝不楞铁矿区中粗粒花岗岩SHRIMP定年及其意义[J]. 矿床地质, 2010, 29(2): 317-322.
[18]	聂秀兰, 侯万荣. 内蒙古迪彦钦阿木大型钼-银矿床的发现及地质意义[J]. 地球学报, 2010, 31(3): 469-472.
[19]	孙艳霞, 张达, 张寿庭, 等. 内蒙古小坝梁铜金矿床的硫、铅同位素特征和喷流沉积成因[J]. 地质找矿论丛, 2009, 24(4): 282-285.
[20]	张万益, 聂凤军, 刘妍, 等. 内蒙古奥尤特铜-锌矿床绢云母⁴⁰Ar-³⁹Ar同位素年龄及地质意义[J]. 地球学报, 2008, 29(5): 592-598.
[21]	李敏, 程银行, 李艳锋. 内蒙古东乌旗巴彦都兰二长花岗岩年代学、地球化学特征及其地质意义[J]. 地质科技情报, 2015, 34(4): 6-14.
[22]	李敏, 程银行, 任邦方, 等. 内蒙古东乌旗晚古生代闪长岩、二长花岗岩年代学特征及岩石成因[J]. 中国地质, 2016, 43(2):380-394.
[23]	洪大卫, 王式洸, 谢锡林, 等. 试析地幔来源物质成矿域——以中亚造山带为例[J]. 矿床地质, 2003, 22(1): 41-55.
[24]	ANDERSEN T. Correction of common lead in U-Pb analyses that do not report ²⁰⁴Pb[J]. Chemical Geology, 2002, 192(1/2): 59-79. DOI URL
[25]	YUAN H, GAO S, LIU X, et al. Accurate U-Pb age and trace element determinations of zircon by laser ablation-inductively coupled plasma-mass spectrometry[J]. Geostandards and Geoanalytical Research, 2004, 28(3): 353-370. DOI URL
[26]	WU F Y, YANG Y H, XIE L W, et al. Hf isotopic compositions of the standard zircons and baddeleyites used in U-Pb geochrono-logy[J]. Chemical Geology, 2006, 234(1): 105-126. DOI URL
[27]	PECCERILLO A, TAYLOR S R. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey[J]. Contributions to Mineralogy and Petrology, 1976, 58(1): 63-81. DOI URL
[28]	MIDDLEMOST E A. Magmatic Rocks[M]. London:Logman, 1995: 1-266.
[29]	Middlemost E A. Naming materials in the magma/igneous rock system[J]. Earth Science Reviews, 1994, 37(3/4): 215-224. DOI URL
[30]	RUBATTO D, GEBAUER D. Use of cathodoluminescence for U-Pb zircon dating by ion Microprobe: Some examples from the Western Alps[M]// PAGELM, BARBINV, BLANCP, et al.Cathodoluminescence in Geosciences. Berlin, Heidelberg: Springer, 2000: 373-400.
[31]	HANCHAR J M, MILLER C F. Zircon zonation patterns as revealed by cathodoluminescence and backscattered electron images: implications for interpretation of complex crustal histories[J]. Chemical Geology, 1993, 110(1): 1-13. DOI URL
[32]	BELOUSOVA E, GRIFFIN W L, O’REILLY S Y, et al. Igneous zircon: trace element composition as an indicator of source rock type[J]. Contributions to Mineralogy and Petrology, 2002, 143(5): 602-622. DOI URL
[33]	SUN S S, MCDONOUGH W F. Chemical and isotopic systema-tics of oceanic basalts: Implications for mantle composition and processes[J]. Geological Society of London, Special Publications, 1989, 42(1): 313-345. DOI URL
[34]	BLICHERT-TOFT J, ALBARÈDE F. The Lu-Hf isotope geochemistry of chondrites and the evolution of the mantle-crust system[J]. Earth and Planetary Science Letters, 1997, 148(1): 243-258. DOI URL
[35]	GRIFFIN W L, PEARSON N J, BELOUSOVA E, et al. The Hf isotope composition of cratonic mantle: LA-MC-ICP-MS analysis of zircon megacrysts in kimberlites[J]. Geochimica et Cosmochimica Acta, 2000, 64(1): 133-147. DOI URL
[36]	程银行, 李艳锋, 李敏, 等. 内蒙古东乌旗碱性侵入岩的时代、成因及地质意义[J]. 地质学报, 2014, 88(11): 2086-2096.
[37]	王治华, 常春郊, 丛润祥, 等. 内蒙古阿钦楚鲁二长花岗岩锆石SHRIMP U-Pb年龄及地球化学特征[J]. 吉林大学学报(地球科学版), 2015, 45(1): 166-187.
[38]	王继春, 王银宏, 张梅, 等. 内蒙古高尔旗银铅锌矿区花岗岩的岩石成因:地球化学、锆石U-Pb年代学及Hf同位素约束[J]. 现代地质, 2016, 30(5): 961-980.
[39]	云飞, 聂凤军, 江思宏, 等. 内蒙古莫若格钦地区二长闪长岩锆石SHRIMP U-Pb年龄及其地质意义[J]. 矿床地质, 2011, 30(3): 504-510.
[40]	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. DOI URL
[41]	韩宝福. 后碰撞花岗岩类的多样性及其构造环境判别的复杂性[J]. 地学前缘, 2007, 14(3): 64-72.
[42]	BATCHELOR R A, BOWDEN P. Petrogenetic interpretation of granitoid rock series using multicationic parameters[J]. Chemical Geology, 1985, 48(1/4): 43-55. DOI URL
[43]	XIAO W, WINDLEY B F, HAO J, et al. Accretion leading to collision and the Permian Solonker suture, Inner Mongolia, China: Termination of the Central Asian orogenic belt[J]. Tectoni-cs, 2003, 22(6): 8-1.
[44]	XIAO W J, WINDLEY B F, HUANG B C, et al. End-Permian to mid-Triassic termination of the accretionary processes of the southern Altaids: implications for the geodynamic evolution, Phanerozoic continental growth, and metallogeny of Central Asia[J]. International Journal of Earth Sciences, 2009, 98(6): 1189-1217. DOI URL
[45]	WINDLEY B F, ALEXEIEV D, XIAO W, et al. Tectonic models for accretion of the Central Asian Orogenic Belt[J]. Journal of the Geological Society, 2007, 164(1): 31-47. DOI URL
[46]	ROBINSON P T, ZHOU M, HU X F, et al. Geochemical constraints on the origin of the Hegenshan ophiolite, Inner Mongolia, China[J]. Journal of Asian Earth Sciences, 1999, 17(4): 423-442. DOI URL
[47]	JIAN P, LIU D, KRÖNER A, et al. Time scale of an early to mid-Paleozoic orogenic cycle of the long-lived Central Asian Orogenic Belt, Inner Mongolia of China: implications for continental growth[J]. Lithos, 2008, 101(3): 233-259. DOI URL
[48]	苏美霞, 赵文涛, 张慧聪, 等. 华北板块与西伯利亚板块缝合带之地球物理特征[J]. 物探与化探, 2014, 38(5): 949-955.
[49]	EIZENHÖFER P R, ZHAO G, ZHANG J, et al. Final closure of the Paleo-Asian Ocean along the Solonker Suture Zone: Constraints from geochronological and geochemical data of Permian volcanic and sedimentary rocks[J]. Tectonics, 2014, 33(4): 441-463. DOI URL
[50]	JIAN P, KRÖNER A, WINDLEY B F, et al. Carboniferous and Cretaceous mafic-ultramafic massifs in Inner Mongolia (China): A SHRIMP zircon and geochemical study of the previously presumed integral “Hegenshan ophiolite”[J]. Lithos, 2012, 142/143: 48-66. DOI URL
[51]	ZHANG Z, LI K, LI J, et al. Geochronology and geochemistry of the Eastern Erenhot ophiolitic complex: Implications for the tectonic evolution of the Inner Mongolia-Daxinganling Orogenic Belt[J]. Journal of Asian Earth Sciences, 2015, 97: 279-293. DOI URL
[52]	黄波, 付冬, 李树才, 等. 内蒙古贺根山蛇绿岩形成时代及构造启示[J]. 岩石学报, 2016, 32(1): 158-176.
[53]	洪大卫, 王式洸, 韩宝福, 等. 碱性花岗岩的构造环境分类及其鉴别标志[J]. 中国科学:化学, 1995(4):418-426.
[54]	辛后田, 滕学建. 内蒙古东乌旗宝力高庙组地层划分及其同位素年代学研究[J]. 地质调查与研究, 2011, 34(1): 1-9.
[55]	程银行, 滕学建, 辛后田, 等. 内蒙古东乌旗狠麦温都尔花岗岩SHRIMP锆石U-Pb年龄及其地质意义[J]. 岩石矿物学杂志, 2012, 31(3): 323-334.
[56]	邓晋福, 赵海玲, 莫宣学. 中国大陆根-柱构造:大陆动力学的钥匙[M]. 北京: 地质出版社, 1996: 1-110.
[57]	BROWN M. The generation, segregation, ascent and emplacement of granite magma: the migmatite-to-crustally-derived granite connection in thickened orogens[J]. Earth-Science Reviews, 1994, 36(1/2): 83-130. DOI URL
[58]	张旗, 潘国强, 李承东, 等. 花岗岩结晶分离作用问题——关于花岗岩研究的思考之二[J]. 岩石学报, 2007, 23(6): 1239-1251.
[59]	SCHERER E E, CAMERON K L, BLICHERT-TOFT J. Lu-Hf garnet geochronology: closure temperature relative to the Sm-Nd system and the effects of trace mineral inclusions[J]. Geochimica et Cosmochimica Acta, 2000, 64(19): 3413-3432. DOI URL
[60]	吴福元, 李献华, 郑永飞, 等. Lu-Hf同位素体系及其岩石学应用[J]. 岩石学报, 2007, 23(2): 185-220.
[61]	GRIFFIN W L, WANG X, JACKSON S E, et al. Zircon chemistry and magma mixing, SE China: in-situ analysis of Hf isotopes, Tonglu and Pingtan igneous complexes[J]. Lithos, 2002, 61(3): 237-269. DOI URL
[62]	DOBRETSOV N L, BERZIN N A, BUSLOV M M. Opening and tectonic evolution of the Paleo-Asian Ocean[J]. International Geology Review, 1995, 37(4): 335-360. DOI URL
[63]	DEBON F. Comparative major element chemistry in various “microgranular enclave-plutonic host” pairs[M]// DIDIERJ, BARBARINB.Enclaves and Granite Petrology. Amsterdam:Elsevier, 1991: 293-312.
[64]	KOCAK K, ZEDEF V, KANSUN G. Magma mixing/mingling in the Eocene Horoz (Nigde) granitoids, central southern Turkey: evidence from mafic microgranular enclaves[J]. Mineralogy and Petrology, 2011, 103(1/4): 149-167. DOI URL
[65]	MÜNKER C, PFÄNDER J A, WEYER S, et al. Evolution of planetary cores and the Earth-Moon system from Nb/Ta systema-tics[J]. Science, 2003, 301:84. DOI URL
[66]	ZORPI M J, COULON C, ORSINI J B, et al. Magma mingling, zoning and emplacement in calc-alkaline granitoid plutons[J]. Tectonophysics, 1989, 157(4):315-329. DOI URL
[67]	张旗, 潘国强, 李承东, 等. 花岗岩混合问题:与玄武岩对比的启示——关于花岗岩研究的思考之一[J]. 岩石学报, 2007, 23(5): 1141-1152.
[68]	华仁民, 王登红. 关于花岗岩与成矿作用若干基本概念的再认识[J]. 矿床地质, 2012, 31(1): 165-175.
[69]	聂凤军, 曹毅, 丁成武, 等. 论兴蒙造山带叠生成矿作用——以锡林浩特和额尔古纳地块为例[J]. 岩石学报, 2014, 30(7): 2063-2080.
[70]	葛良胜, 张文钊, 袁士松, 等. 蒙古南戈壁—中国东乌旗跨国境成矿带东段金多金属成矿与找矿[M]. 北京: 地质出版社, 2009: 1-209.
[71]	PERELLO J, COX D, GARAMJAV D, et al. Oyu Tolgoi, Mongolia: Siluro-Devonian porphyry Cu-Au-(Mo) and high-sulfidation Cu mineralization with a Cretaceous Chalcocite Blanket[J]. Economic Geology, 2001, 96(6):1407-1428. DOI URL
[72]	KHASHGEREL B E, RYE R O, HEDENQUIST J W, et al. Geology and reconnaissance stable isotope study of the Oyu Tolgoi porphyry Cu-Au system, South Gobi, Mongolia[J]. Economic Geology, 2006, 101(3):503-522. DOI URL
[73]	WAINWRIGHT A J, TOSDAL R M, WOODEN J L, et al. U-Pb (zircon) and geochemical constraints on the age, origin, and evolution of Paleozoic arc magmas in the Oyu Tolgoi porphyry Cu-Au district, southern Mongolia[J]. Gondwana Research, 2011, 19(3):764-787. DOI URL
[74]	WATANABE Y, STEIN H J. Re-Os ages for the Erdenet and Tsagaan Suvarga porphyry Cu-Mo deposits, Mongolia, and tectonic implications[J]. Economic Geology, 2000, 95(7): 1537-1542.
[75]	聂凤军, 云飞. 蒙古国南部又发现一处大型铜-锌矿床[J]. 地球学报, 2009, 30(1): 127-128.

样品编号	岩性	SiO₂	TiO₂		Al₂O₃		FeO		Fe₂O₃		MnO		MgO		CaO		Na₂O		K₂O		P₂O₅		烧失量		总量
BL1-1	黑云母二长花岗岩	70.39	0.41		14.99		2.26		0.46		0.05		0.79		0.48		4.50		4.28		0.11		(0.06)		98.66
BL1-2		69.16	0.38		15.32		2.07		0.46		0.05		0.71		1.20		4.09		4.36		0.10		0.84		98.74
BL-Z1		68.33	0.40		15.44		2.29		0.58		0.05		0.51		1.20		4.16		4.77		0.09		1.26		99.06
BL-Z2		68.69	0.44		15.55		2.20		0.93		0.08		0.93		2.00		3.94		4.01		0.11		0.87		99.75
BL-Z1BT	暗色微粒包体	52.49	1.34		17.54		8.35		2.33		0.22		3.45		3.35		4.33		2.07		0.35		2.82		97.15
BL-Z2BT	暗色微粒包体	52.65	1.34		17.57		8.20		2.51		0.23		3.46		3.35		4.33		2.07		0.35		2.77		97.38
4437-1	二长花岗岩	72.44	0.15		15.52		0.12		0.74		0.10		0.24		0.67		4.83		4.26		0.07		0.67		99.81
4437-2		74.22	0.13		14.71		0.20		0.54		0.08		0.20		0.59		4.35		4.28		0.06		0.52		99.88
4437-3		73.59	0.17		14.56		0.47		0.92		0.10		0.36		1.01		4.48		3.57		0.09		0.65		99.97
4437-4		71.56	0.15		16.38		0.18		0.65		0.07		0.21		0.58		4.94		4.35		0.05		0.74		99.86
样品编号	岩性	Rb		Ba		Th		U		Nb		Ta		La		Ce		Pr		Sr		Nd		Sm
BL1-1	黑云母二长花岗岩	113.50		892.00		14.10		2.30		10.20		1.20		24.50		52.20		5.93		205.00		22.10		5.56
BL1-2		122.00		917.00		13.95		2.71		9.90		1.20		34.20		69.70		7.44		354.00		27.60		5.88
BL-Z1		117.50		817.00		10.55		7.76		8.90		0.70		48.50		95.40		10.80		229.00		39.80		6.85
BL-Z2		165.50		615.00		14.90		8.17		11.90		1.70		26.70		51.20		6.38		256.00		24.60		5.05
BL-Z1BT	暗色微粒包体	212.00		161.50		11.25		20.20		23.70		1.30		45.60		102.00		13.90		383.00		57.20		13.95
BL-Z2BT	暗色微粒包体	251.00		187.00		13.30		25.20		28.60		1.50		53.00		116.00		16.20		441.00		66.50		16.15
4437-1	二长花岗岩	177.00		706.00		6.63		3.18		10.50		0.97		5.50		17.20		1.28		203.00		4.39		0.86
4437-2		162.00		298.00		12.40		5.33		10.50		2.31		16.90		31.40		3.65		135.00		12.90		2.47
4437-3		190.00		475.00		15.50		4.65		7.91		1.51		14.10		28.60		2.70		101.00		9.11		1.61
4437-4		174.00		468.00		14.80		4.47		9.51		1.85		31.50		60.40		6.26		110.00		21.30		3.66
样品编号	岩性	Zr		Hf		Eu		Gd		Tb		Dy		Y		Ho		Er		Tm		Yb		Lu
BL1-1	黑云母二长花岗岩	386.00		10.50		1.29		4.67		0.79		4.17		24.30		0.94		2.84		0.47		3.05		0.55
BL1-2		369.00		10.00		1.36		4.73		0.78		4.43		25.70		0.97		2.71		0.49		2.96		0.53
BL-Z1		493.00		10.70		1.31		5.23		0.73		4.06		28.20		0.85		2.20		0.31		2.08		0.35
BL-Z2		316.00		7.50		0.88		4.35		0.72		4.15		30.20		0.88		2.63		0.42		2.78		0.44
BL-Z1BT	暗色微粒包体	306.00		7.40		1.37		11.95		1.92		10.60		68.00		2.23		6.14		0.89		6.17		0.92
BL-Z2BT	暗色微粒包体	336.00		8.40		1.56		14.40		2.42		13.30		78.00		2.68		7.56		1.08		7.03		1.11
4437-1	二长花岗岩	149.00		11.50		0.33		0.85		0.16		1.02		5.30		0.23		0.70		0.11		0.77		0.12
4437-2		68.90		2.70		0.32		2.19		0.34		1.89		11.00		0.40		1.15		0.19		1.24		0.19
4437-3		73.80		2.86		0.30		1.58		0.23		1.23		6.39		0.25		0.71		0.10		0.66		0.09
4437-4		62.60		2.70		0.44		3.21		0.41		1.92		9.54		0.37		1.00		0.15		0.92		0.14

样品编号	岩性	SiO₂	TiO₂		Al₂O₃		FeO		Fe₂O₃		MnO		MgO		CaO		Na₂O		K₂O		P₂O₅		烧失量		总量
BL1-1	黑云母二长花岗岩	70.39	0.41		14.99		2.26		0.46		0.05		0.79		0.48		4.50		4.28		0.11		(0.06)		98.66
BL1-2		69.16	0.38		15.32		2.07		0.46		0.05		0.71		1.20		4.09		4.36		0.10		0.84		98.74
BL-Z1		68.33	0.40		15.44		2.29		0.58		0.05		0.51		1.20		4.16		4.77		0.09		1.26		99.06
BL-Z2		68.69	0.44		15.55		2.20		0.93		0.08		0.93		2.00		3.94		4.01		0.11		0.87		99.75
BL-Z1BT	暗色微粒包体	52.49	1.34		17.54		8.35		2.33		0.22		3.45		3.35		4.33		2.07		0.35		2.82		97.15
BL-Z2BT	暗色微粒包体	52.65	1.34		17.57		8.20		2.51		0.23		3.46		3.35		4.33		2.07		0.35		2.77		97.38
4437-1	二长花岗岩	72.44	0.15		15.52		0.12		0.74		0.10		0.24		0.67		4.83		4.26		0.07		0.67		99.81
4437-2		74.22	0.13		14.71		0.20		0.54		0.08		0.20		0.59		4.35		4.28		0.06		0.52		99.88
4437-3		73.59	0.17		14.56		0.47		0.92		0.10		0.36		1.01		4.48		3.57		0.09		0.65		99.97
4437-4		71.56	0.15		16.38		0.18		0.65		0.07		0.21		0.58		4.94		4.35		0.05		0.74		99.86
样品编号	岩性	Rb		Ba		Th		U		Nb		Ta		La		Ce		Pr		Sr		Nd		Sm
BL1-1	黑云母二长花岗岩	113.50		892.00		14.10		2.30		10.20		1.20		24.50		52.20		5.93		205.00		22.10		5.56
BL1-2		122.00		917.00		13.95		2.71		9.90		1.20		34.20		69.70		7.44		354.00		27.60		5.88
BL-Z1		117.50		817.00		10.55		7.76		8.90		0.70		48.50		95.40		10.80		229.00		39.80		6.85
BL-Z2		165.50		615.00		14.90		8.17		11.90		1.70		26.70		51.20		6.38		256.00		24.60		5.05
BL-Z1BT	暗色微粒包体	212.00		161.50		11.25		20.20		23.70		1.30		45.60		102.00		13.90		383.00		57.20		13.95
BL-Z2BT	暗色微粒包体	251.00		187.00		13.30		25.20		28.60		1.50		53.00		116.00		16.20		441.00		66.50		16.15
4437-1	二长花岗岩	177.00		706.00		6.63		3.18		10.50		0.97		5.50		17.20		1.28		203.00		4.39		0.86
4437-2		162.00		298.00		12.40		5.33		10.50		2.31		16.90		31.40		3.65		135.00		12.90		2.47
4437-3		190.00		475.00		15.50		4.65		7.91		1.51		14.10		28.60		2.70		101.00		9.11		1.61
4437-4		174.00		468.00		14.80		4.47		9.51		1.85		31.50		60.40		6.26		110.00		21.30		3.66
样品编号	岩性	Zr		Hf		Eu		Gd		Tb		Dy		Y		Ho		Er		Tm		Yb		Lu
BL1-1	黑云母二长花岗岩	386.00		10.50		1.29		4.67		0.79		4.17		24.30		0.94		2.84		0.47		3.05		0.55
BL1-2		369.00		10.00		1.36		4.73		0.78		4.43		25.70		0.97		2.71		0.49		2.96		0.53
BL-Z1		493.00		10.70		1.31		5.23		0.73		4.06		28.20		0.85		2.20		0.31		2.08		0.35
BL-Z2		316.00		7.50		0.88		4.35		0.72		4.15		30.20		0.88		2.63		0.42		2.78		0.44
BL-Z1BT	暗色微粒包体	306.00		7.40		1.37		11.95		1.92		10.60		68.00		2.23		6.14		0.89		6.17		0.92
BL-Z2BT	暗色微粒包体	336.00		8.40		1.56		14.40		2.42		13.30		78.00		2.68		7.56		1.08		7.03		1.11
4437-1	二长花岗岩	149.00		11.50		0.33		0.85		0.16		1.02		5.30		0.23		0.70		0.11		0.77		0.12
4437-2		68.90		2.70		0.32		2.19		0.34		1.89		11.00		0.40		1.15		0.19		1.24		0.19
4437-3		73.80		2.86		0.30		1.58		0.23		1.23		6.39		0.25		0.71		0.10		0.66		0.09
4437-4		62.60		2.70		0.44		3.21		0.41		1.92		9.54		0.37		1.00		0.15		0.92		0.14

测试点号	Th/10^-6	U/10^-6	Pb/10^-6	Th/U	同位素比值					年龄/Ma
测试点号	Th/10^-6	U/10^-6	Pb/10^-6	Th/U	²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U			²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ
BL1-02	158.56	381.55	19.10	0.42	0.343 92	0.012 05	0.047 90	0.000 66	300		9	302	4
BL1-03	103.84	228.17	11.61	0.46	0.343 24	0.020 28	0.047 67	0.000 75	300		15	300	5
BL1-04	141.01	361.77	17.98	0.39	0.340 40	0.012 07	0.047 28	0.000 63	297		9	298	4
BL1-05	113.38	236.93	12.11	0.48	0.340 96	0.015 88	0.047 61	0.000 70	298		12	300	4
BL1-08	226.42	383.68	20.25	0.59	0.345 99	0.011 48	0.047 71	0.000 63	302		9	300	4
BL1-10	75.99	276.89	14.18	0.27	0.367 37	0.015 50	0.047 09	0.000 63	318		12	297	4
BL1-11	119.22	242.37	13.04	0.49	0.363 79	0.018 47	0.047 82	0.000 70	315		14	301	4
BL1-12	109.67	166.53	9.73	0.66	0.358 41	0.020 61	0.047 14	0.000 75	311		15	297	5
BL1-18	382.47	1 420.89	72.04	0.27	0.352 21	0.010 35	0.048 27	0.000 59	306		8	304	4
BL1-20	65.31	629.05	30.57	0.10	0.349 42	0.009 16	0.048 35	0.000 60	304		7	304	4
BL1-26	110.78	356.60	17.93	0.31	0.354 06	0.010 52	0.047 31	0.000 60	308		8	298	4
BL1-27	48.78	124.22	6.40	0.39	0.344 00	0.015 79	0.047 38	0.000 67	300		12	298	4
BL1-28	58.24	153.42	7.94	0.38	0.343 43	0.011 69	0.047 77	0.000 64	300		9	301	4
BL1-29	76.28	214.89	11.12	0.35	0.346 31	0.011 11	0.047 92	0.000 62	302		8	302	4
BL2-01	390.64	1241.56	75.02	0.31	0.336 86	0.016 23	0.046 02	0.000 56	295		12	290	3
BL2-06	45.92	118.34	5.86	0.39	0.348 09	0.021 83	0.048 38	0.000 83	303		16	305	5
BL2-07	95.76	209.94	24.94	0.46	0.339 91	0.018 41	0.047 21	0.000 77	297		14	297	5
BL2-08	38.33	101.05	5.14	0.38	0.344 18	0.030 08	0.047 65	0.000 85	300		23	300	5
BL2-09	91.05	267.87	13.83	0.34	0.345 68	0.012 33	0.047 76	0.000 65	301		9	301	4
BL2-10	98.96	291.63	14.47	0.34	0.347 12	0.017 65	0.048 00	0.000 66	303		13	302	4
BL2-11	79.50	181.09	9.38	0.44	0.342 00	0.022 42	0.047 46	0.000 71	299		17	299	4
BL2-13	102.03	236.30	13.85	0.43	0.340 33	0.022 64	0.046 14	0.000 67	297		17	291	4
BL2-15	136.33	288.44	14.74	0.47	0.346 03	0.013 20	0.047 81	0.000 63	302		10	301	4
BL2-17	65.25	162.95	8.35	0.40	0.343 77	0.024 67	0.047 63	0.000 83	300		19	300	5
BL2-18	61.13	163.36	8.41	0.37	0.347 48	0.015 44	0.047 97	0.000 65	303		12	302	4
BL2-19	249.00	798.83	40.19	0.31	0.355 07	0.006 89	0.049 12	0.000 56	309		5	309	3
BL2-21	189.26	405.58	22.24	0.47	0.341 33	0.013 57	0.047 08	0.000 58	298		10	297	4
BL2-23	82.87	227.96	10.89	0.36	0.335 95	0.018 47	0.047 03	0.000 74	294		14	296	5
BL2-24	268.72	1 029.77	51.11	0.26	0.376 44	0.009 93	0.047 55	0.000 56	324		7	299	3
BL2-27	316.44	741.82	40.68	0.43	0.342 46	0.014 46	0.047 48	0.000 60	299		11	299	4
BL2-29	112.13	449.76	24.43	0.25	0.362 19	0.009 63	0.047 96	0.000 56	314		7	302	3
BL2-30	103.47	278.62	15.14	0.37	0.352 11	0.013 71	0.047 71	0.000 61	306		10	300	4
BL2-31	91.25	290.46	13.06	0.31	0.379 16	0.012 64	0.048 10	0.000 65	326		9	303	4

测试点号	Th/10^-6	U/10^-6	Pb/10^-6	Th/U	同位素比值					年龄/Ma
测试点号	Th/10^-6	U/10^-6	Pb/10^-6	Th/U	²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U			²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ
BL1-02	158.56	381.55	19.10	0.42	0.343 92	0.012 05	0.047 90	0.000 66	300		9	302	4
BL1-03	103.84	228.17	11.61	0.46	0.343 24	0.020 28	0.047 67	0.000 75	300		15	300	5
BL1-04	141.01	361.77	17.98	0.39	0.340 40	0.012 07	0.047 28	0.000 63	297		9	298	4
BL1-05	113.38	236.93	12.11	0.48	0.340 96	0.015 88	0.047 61	0.000 70	298		12	300	4
BL1-08	226.42	383.68	20.25	0.59	0.345 99	0.011 48	0.047 71	0.000 63	302		9	300	4
BL1-10	75.99	276.89	14.18	0.27	0.367 37	0.015 50	0.047 09	0.000 63	318		12	297	4
BL1-11	119.22	242.37	13.04	0.49	0.363 79	0.018 47	0.047 82	0.000 70	315		14	301	4
BL1-12	109.67	166.53	9.73	0.66	0.358 41	0.020 61	0.047 14	0.000 75	311		15	297	5
BL1-18	382.47	1 420.89	72.04	0.27	0.352 21	0.010 35	0.048 27	0.000 59	306		8	304	4
BL1-20	65.31	629.05	30.57	0.10	0.349 42	0.009 16	0.048 35	0.000 60	304		7	304	4
BL1-26	110.78	356.60	17.93	0.31	0.354 06	0.010 52	0.047 31	0.000 60	308		8	298	4
BL1-27	48.78	124.22	6.40	0.39	0.344 00	0.015 79	0.047 38	0.000 67	300		12	298	4
BL1-28	58.24	153.42	7.94	0.38	0.343 43	0.011 69	0.047 77	0.000 64	300		9	301	4
BL1-29	76.28	214.89	11.12	0.35	0.346 31	0.011 11	0.047 92	0.000 62	302		8	302	4
BL2-01	390.64	1241.56	75.02	0.31	0.336 86	0.016 23	0.046 02	0.000 56	295		12	290	3
BL2-06	45.92	118.34	5.86	0.39	0.348 09	0.021 83	0.048 38	0.000 83	303		16	305	5
BL2-07	95.76	209.94	24.94	0.46	0.339 91	0.018 41	0.047 21	0.000 77	297		14	297	5
BL2-08	38.33	101.05	5.14	0.38	0.344 18	0.030 08	0.047 65	0.000 85	300		23	300	5
BL2-09	91.05	267.87	13.83	0.34	0.345 68	0.012 33	0.047 76	0.000 65	301		9	301	4
BL2-10	98.96	291.63	14.47	0.34	0.347 12	0.017 65	0.048 00	0.000 66	303		13	302	4
BL2-11	79.50	181.09	9.38	0.44	0.342 00	0.022 42	0.047 46	0.000 71	299		17	299	4
BL2-13	102.03	236.30	13.85	0.43	0.340 33	0.022 64	0.046 14	0.000 67	297		17	291	4
BL2-15	136.33	288.44	14.74	0.47	0.346 03	0.013 20	0.047 81	0.000 63	302		10	301	4
BL2-17	65.25	162.95	8.35	0.40	0.343 77	0.024 67	0.047 63	0.000 83	300		19	300	5
BL2-18	61.13	163.36	8.41	0.37	0.347 48	0.015 44	0.047 97	0.000 65	303		12	302	4
BL2-19	249.00	798.83	40.19	0.31	0.355 07	0.006 89	0.049 12	0.000 56	309		5	309	3
BL2-21	189.26	405.58	22.24	0.47	0.341 33	0.013 57	0.047 08	0.000 58	298		10	297	4
BL2-23	82.87	227.96	10.89	0.36	0.335 95	0.018 47	0.047 03	0.000 74	294		14	296	5
BL2-24	268.72	1 029.77	51.11	0.26	0.376 44	0.009 93	0.047 55	0.000 56	324		7	299	3
BL2-27	316.44	741.82	40.68	0.43	0.342 46	0.014 46	0.047 48	0.000 60	299		11	299	4
BL2-29	112.13	449.76	24.43	0.25	0.362 19	0.009 63	0.047 96	0.000 56	314		7	302	3
BL2-30	103.47	278.62	15.14	0.37	0.352 11	0.013 71	0.047 71	0.000 61	306		10	300	4
BL2-31	91.25	290.46	13.06	0.31	0.379 16	0.012 64	0.048 10	0.000 65	326		9	303	4

测试点号	年龄/Ma	¹⁷⁶Yb/¹⁷⁷Hf	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Hf/¹⁷⁷Hf	2σ	ε_Hf(0)	f_Lu/Hf	ε_Hf(t)	T_DM1	T_DM2
BL1-02	302.00	0.02	0.000 7	0.282 897	0.000 009	4.4	-0.98	10.9	499	619
BL1-03	300.00	0.03	0.001 0	0.282 885	0.000 010	4.0	-0.97	10.4	521	652
BL1-04	298.00	0.03	0.001 0	0.282 829	0.000 008	2.0	-0.97	8.4	599	775
BL1-05	300.00	0.02	0.000 8	0.282 866	0.000 007	3.3	-0.98	9.8	545	691
BL1-08	300.00	0.04	0.001 3	0.282 840	0.000 010	2.4	-0.96	8.8	588	754
BL1-10	297.00	0.04	0.001 3	0.282 836	0.000 010	2.2	-0.96	8.5	595	766
BL1-11	301.00	0.03	0.000 9	0.282 863	0.000 009	3.2	-0.97	9.7	550	699
BL1-18	304.00	0.03	0.001 0	0.282 866	0.000 007	3.3	-0.97	9.8	547	693
BL1-20	304.00	0.05	0.001 7	0.282 761	0.000 007	-0.4	-0.95	6.0	709	939
BL1-26	298.00	0.02	0.000 6	0.282 803	0.000 009	1.1	-0.98	7.5	630	830
BL1-27	298.00	0.02	0.000 7	0.282 866	0.000 010	3.3	-0.98	9.7	543	690
BL1-28	301.00	0.03	0.000 8	0.282 851	0.000 012	2.8	-0.97	9.2	566	726
BL1-29	302.00	0.02	0.000 7	0.282 843	0.000 008	2.5	-0.98	9.0	576	742
BL2-01	290.00	0.02	0.000 7	0.282 847	0.000 008	2.7	-0.98	9.1	569	732
BL2-06	305.00	0.02	0.000 7	0.282 867	0.000 009	3.4	-0.98	9.8	541	687
BL2-09	301.00	0.02	0.000 7	0.282 821	0.000 010	1.7	-0.98	8.2	605	790
BL2-10	302.00	0.03	0.000 8	0.282 893	0.000 009	4.3	-0.98	10.7	506	629
BL2-11	299.00	0.02	0.000 7	0.282 859	0.000 009	3.1	-0.98	9.5	552	705
BL2-13	291.00	0.03	0.001 0	0.282 779	0.000 012	0.2	-0.97	6.6	671	890
BL2-17	300.00	0.02	0.000 6	0.282 850	0.000 009	2.7	-0.98	9.2	564	725
BL2-18	302.00	0.01	0.000 5	0.282 881	0.000 011	3.8	-0.99	10.3	519	654
BL2-19	309.00	0.02	0.000 8	0.282 895	0.000 008	4.3	-0.98	10.8	503	626
BL2-21	297.00	0.05	0.001 5	0.282 894	0.000 009	4.3	-0.96	10.6	513	635
BL2-24	299.00	0.02	0.000 7	0.282 846	0.000 008	2.6	-0.98	9.1	570	734
BL2-27	299.00	0.04	0.001 5	0.282 856	0.000 022	3.0	-0.95	9.3	568	722
BL2-29	302.00	0.03	0.000 9	0.282 814	0.000 008	1.5	-0.97	7.9	618	808
BL2-30	300.00	0.06	0.001 6	0.282 831	0.000 009	2.1	-0.95	8.4	605	778