Please wait a minute...
img img
高级检索
地球科学进展  2007, Vol. 22 Issue (8): 818-827    DOI: 10.11867/j.issn.1001-8166.2007.08.0818
研究论文     
甘肃天水地区百花岩浆杂岩的锆石LA-ICP-MS U-Pb定年及其地质意义
裴先治,刘战庆,丁仨平,李佐臣,李高阳,李瑞保,王 飞,李夫杰
西部地质资源与地质工程教育部重点实验室,长安大学地球科学与资源学院,陕西 西安 710054
Zircon LA-ICP-MS U-Pb Dating of the Gabbro from the BaihuaIgneous 
PEI Xian-zhi,LIU Zhan-qing,DING Sa-ping,LI Zuo-chen,LI Gao-yang,LI Rui-bao,WANG Fei,Li Fu-jie
Key Laboratory of Western Geological Resources and Geological Engineering of Ministry of Education,Collegey of Earth Sciences and Resources, Chang’an University, Xi’an 710054, China
 全文: PDF(3384 KB)  
摘要:

利用阴极发光和LA-ICP-MS微区定年分析方法,对甘肃天水地区百花岩浆杂岩中的辉长岩进行了单颗粒锆石U-Pb同位素分析。百花岩浆杂岩体主要由辉石岩—辉长(闪长)岩—闪长岩—石英闪长岩组成,构成较完整的同源岩浆演化序列,地球化学研究表明其形成于岛弧构造环境。对百花岩浆杂岩中辉长岩的LA-ICP-MS锆石U-Pb同位素定年结果表明,其同位素年龄为(449.7±3.1)Ma(MSWD=1.9),形成于晚奥陶世,表明西秦岭北带岛弧型岩浆岩的形成时代为晚奥陶世,结合区域地质资料,揭示出以西秦岭北缘关子镇蛇绿岩为代表的古洋盆的俯冲作用及产生岛弧型岩浆活动的时限为中晚奥陶世。

关键词: 岩浆杂岩辉长岩LA-ICP-MS锆石U-Pb定年天水地区    
Abstract:

Using cathodoluminescence(CL)imaging and LA-ICP-MS in site U-Pb isotope dating technigue,this paper presents zircon U-Pb dating for the gabbro from the Baihua igneous complex in Tianshui area,eastern Gansu pvovince and reveals interesting tectonic implication. Baihua igneous complex consists mainly of pyroxenite-gabbro(diorite)-diorite-quartz diorite. They form a complete comagmatic evolutionary series. The tectonics environment discrimination of trace element geochemistry reveals the igneous complexs formed in an island-arc setting. The LA-ICP-MS single-zircons U-Pb age of the gabbro from Baihua igneous complex is (449.7±3.1)Ma(MSWD=1.9),which shows that the forming time of the island-arc type magmatite in northern zone of West Qinling is Late Ordovician,also reveals that the timing of subduction of paleoocean basin represented by the Guanzizhen ophiolite and resulting island-arc-type magmatic activities is probably Middle-Late Ordovician.

Key words: LA-ICP-MS zircons U-Pb dating    Tianshui area.    Igneous complex    Gabbro
收稿日期: 2007-03-10 出版日期: 2007-08-10
:  P588  
基金资助:

国家自然科学基金项目“扬子地块西北缘后龙门东段变质核杂岩形成机制和区域构造背景”(编号:40572121);国家自然科学基金重点项目“西秦岭—松潘构造结形成演化与大陆动力学研究”(编号:40234041);教育部科学技术研究重点项目“西秦岭北部造山带结构以及祁连—秦岭造山带构造关系”(编号:104175);中国地质调查局地质调查项目“甘肃省天水市幅1∶250000区域地质调查”(编号:200013000154)共同资助.

通讯作者: 裴先治(1963-),男,新疆巴里坤人,教授,主要从事构造地质学和区域地质学研究.E-mail:peixzh@263.net     E-mail: peixzh@263.net
作者简介: 裴先治(1963-),男,新疆巴里坤人,教授,主要从事构造地质学和区域地质学研究.E-mail:peixzh@263.net
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  
裴先治
丁仨平
王飞
李夫杰
李瑞保
李高阳
李佐臣
刘战庆

引用本文:

裴先治,刘战庆,丁仨平,李佐臣,李高阳,李瑞保,王 飞,李夫杰. 甘肃天水地区百花岩浆杂岩的锆石LA-ICP-MS U-Pb定年及其地质意义[J]. 地球科学进展, 2007, 22(8): 818-827.

PEI Xian-zhi,LIU Zhan-qing,DING Sa-ping,LI Zuo-chen,LI Gao-yang,LI Rui-bao,et al. Zircon LA-ICP-MS U-Pb Dating of the Gabbro from the BaihuaIgneous . Advances in Earth Science, 2007, 22(8): 818-827.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2007.08.0818        http://www.adearth.ac.cn/CN/Y2007/V22/I8/818

[1]Bureau of Geology and Mineral Resources of Gansu Province. Regional Geology of Gansu Province[M]. Beijing:Geological Publishing House,1989:5-140.[甘肃省地质矿产局. 甘肃省区域地质志[M]. 北京:地质出版社,1989:5-140.]
[2]Bureau of Geology and Mineral Resources of Gansu Province. Stratigraphy (Lithostratic) of Gansu Province[M]. Wuhan:China University of Geosciences Press,1997:1-294.[甘肃省地质矿产局. 甘肃省岩石地层[M]. 武汉:中国地质大学出版社,1997:1-294.]
[3]Song Zhigao,Zhang Zhitao,Zhang Mei,et al. The disintegration of “Niutouhe Group” in the juncture region of Shaanxi-Gansu provinces and its significance in tectonics[J].Bulletin of the Xi’an Institute of Geology and Mineral Resources,CAGS,1991,31:1-14.[宋志高,张治洮,张莓,等. 陕、甘边界“牛头河群”的分解及其构造意义[J]. 中国地质科学院西安地质矿产研究所所刊,1991,31:1-14.]
[4]Song Zhigao,Jia Qunzi,Zhang Zhitao,et al. The early Palaeozoic volcanic rock series and its interconnection relationship between the North Qinling and the North Qilian Orogens[J]. Bulletin of the Xi’an Institute of Geology and Mineral Resources,CAGS,1991,34:1-82.[宋志高,贾群子,张治洮,等. 北秦岭—北祁连(天水—宝鸡间)早古生代火山岩系及其构造连接关系的研究[J]. 中国地质科学院西安地质矿产研究所所刊,1991,34:1-82.]
[5]Zhang Weiji,Meng Xianxun,Hu Jianmin,et al. Tectonics of Conjoint Area between the Qilian and Qinling Orogens[M]. Xi’an:Northwest University Press,1994:1-283.[张维吉,孟宪恂,胡健民,等. 祁连—北秦岭造山带接合部位构造特征与造山过程[M]. 西安:西北大学出版社,1994:1-283.]
[6]Zhang Guowei,Zhang Benren,Yuan Xuecheng,et al. Qinling Orogenic Belt and Continental Dynamics[M]. Beijing:Science Press,2001:1-855.[张国伟,张本仁,袁学诚,等. 秦岭造山带与大陆动力学[M]. 北京:科学出版社,2001:1-855.]
[7]Zhang Guowei,Guo Anlin,Yao Anping. Western Qinling-Songpan continental tectonic node in China’s continental tectonics[J].Earth Science Frontier,2004,11(3):23-33.[张国伟,郭安林,姚安平. 中国大陆构造中的西秦岭—松潘大陆构造结[J]. 地学前缘,2004,11(3):23-32.]
[8]Lu Songnian,Li Huaikun,Chen Zhihong,et al. Meso-Neoproterozoic Geological Evolution in the Qinling Orogeny and Its Response to the Supercontinental Events of RODINIA[M]. Beijing:Geological Publishing House,2003:1-194.[陆松年,李怀坤,陈志宏,等著. 秦岭中—新元古代地质演化及对Rodinia超级大陆事件的响应[M]. 北京:地质出版社,2003:1-194.]
[9]Lu Songnian,Chen Zhihong,Li Huaikun,et al. Two magmatic belts of the Neoproterozoic in the Qinling orogenic belt[J].Acta Geologica Sinica,2005,79(2):165-173.[陆松年,陈志宏,李怀坤,等. 秦岭造山带中两条新元古代岩浆岩带[J]. 地质学报,2005,79(2):165-173.]
[10]Pei Xianzhi,Ding Saping,Hu Bo,et al. Definition of the Guanzizhen ophiolite in Tianshui area,Western Qinling,and its geological significance[J].China Geological Bulletin,2004,23(12):1 202-1 208.[裴先治,丁仨平,胡波,等. 西秦岭天水地区关子镇蛇绿岩的厘定及其地质意义[J]. 地质通报,2004, 23(12):1 202-1 208.]
[11]Pei Xianzhi,Li Yong,Lu Songnian,et al. Zircons U-Pb ages the Guanzizhen intermediate-basic igneous complex in Tianshui area,western Qinling,and their geological significance[J].China Geological Bulletin,2005,24(1):23-29.[裴先治,李勇,陆松年,等. 西秦岭天水地区关子镇中基性岩浆杂岩体锆石U-Pb年龄及其地质意义[J]. 地质通报,2005, 24(1):23-29.]
[12]Pei Xianzhi,Li Zuochen,Ding Saping,et al. Geochemical characteristics and zircon U-Pb ages of island-arc basin igneous complexes in the Tianshui area,West Qinling[J].Geology in China,2005,32(4):529-540.[裴先治,李佐臣,丁仨平,等. 西秦岭天水地区岛弧型基性岩浆杂岩的地球化学特征及形成时代[J]. 中国地质,2005,32(4):529-540.]
[13]Pei Xianzhi,Liu Huibin,Ding Saping,et al. Geochemical characteristics and tectonic significance of the meta-volcanic rocks in the Liziyuan group from Tianshui area,western Qinling orogen[J]. Geotectonica et Metallogenia,2006,30(2):193-205.[裴先治,刘会彬,丁仨平,等. 西秦岭天水地区李子园群变质火山岩的地球化学特征及其构造环境[J]. 大地构造与成矿学,2006,30(2):193-205.]
[14]Pei Xianzhi,Li Zuochen,Liu Huibin,et al. Geochemical characteristics and zircon U-Pb isotopic ages of island-arc basic igneous complexes from the Tianshui area in west Qinling[J]. Frontiers of Earth Science in China,2007,1(1):49-59.
[15]Ding Sanping,Pei Xianzhi,Li Yong,et al. Analysis of the disintegration and tectonic setting of the “Liziyuan Group” in the Tianshui area,western Qinling[J]. Geological Bulletin of China,2004,23(12):1 209-1 214.[丁仨平,裴先治,李勇,等. 西秦岭天水地区“李子园群”的解体及其构造环境浅析[J]. 地质通报,2004,23(12):1 209-1 214.]
[16]Ding Saping,Pei Xianzhi,Liu Huibin,et al. LA-ICP-MS Zircons U-Pb dating of the Xinyang Neoproterozoic granitoid gneisses in Tianshui area, western Qinling and its geological significance [J]. Geology in China,2006,33(6):1 217-1 225.[丁仨平,裴先治,刘会彬,等. 西秦岭天水地区新阳新元古代花岗质片麻岩的锆石LA-ICP-MS定年及其地质意义[J]. 中国地质,2006,33(6):1 217-1 225.]
[17]Liu Huibin,Pei Xianzhi,Ding Sanping,et al. LA-ICP-MS zircon U-Pb dating of the Neoproterozoic granitoid gneisses in the Yuanlong area,Tianshui city,west Qinling,China,and their geological significance[J].Geological Bulletin of China,2006,25(11):1 315-1 320.[刘会彬,裴先治,丁仨平,等. 西秦岭天水市元龙地区新元古代花岗质片麻岩锆石LA-ICP-MS U-Pb定年及其地质意义[J]. 地质通报,2006,25(11):1 315-1 320.]
[18]Pei Xianzhi,Ding Saping,Zhang Guowei,et al. Zircon LA-ICP-MS U-Pb dating of the Neoproterozoic granitoid genisses in the north margin of west Qinling and geological implication[J].Acta Geologica Sinica,2007,81(6):772-786.[裴先治,丁仨平,张国伟,等. 西秦岭北缘新元古代花岗质片麻岩的LA-ICP-MS锆石U-Pb年龄及其地质意义[J].地质学报,2007,81(6):772-786.]
[19]Zhang Hongfei,Jin Lanlan,Zhang Li,et al. Geochemical and Pb-Sr-Nd isotopic compositions ofgranitoids from western Qinling belt:Constrains on basement nature and tectonic affinity[J]. Science in China(Series D),2005,35(10):914-924.[张宏飞,靳兰兰,张利,等. 西秦岭花岗岩类地球化学和Pb-Sr-Nd同位素组成对基底性质及其构造属性的限制[J]. 中国科学:D辑,2005,35(10):914-924.]
[20]Zhang Hongfei,Jin Lanlan,Zhang Li,et al. Pb and Nd isotopic compositions of basement and granitoid in the Qilianshan:Constraints on tectonic affinity[J]. Earth Science—Journal of China University of Geoscience,2006,31(1):57-66.[张宏飞,靳兰兰,张利,等. 基底岩系和花岗岩类Pb-Nd同位素组成限制祁连山带的构造属性[J]. 地球科学——中国地质大学学报,2006,31(1):57-66.]
[21]Zhang H F,Zhang B R,Harris N,et al.U-Pb zircon SHRIMP ages,geochemical and Sr-Nd-Pb isotopic compositions of intrusive rocks from the Longshan-Tianshui area in the southeast corner of the Qilian orogenic belt,China:Constraints on petrogenesis and tectonic affinity[J].Journal of Asia Earth Science,2006,27:751-764.
[22]Yang Zhao,Dong Yunpeng,Liu Xiaoming,et al. LA-ICP-MS zircon U-Pb dating of gabbro in the Guanzizhen ophiolite,Tianshui,west Qinling,China[J]. Geological Bulletin of China,2006,25(11):1 321-1 325.[杨钊,董云鹏,柳小明,等. 西秦岭天水地区关子镇蛇绿岩锆石LA-ICP-MS U-Pb定年[J]. 地质通报,2006,25(11):1 321-1 325.]
[23]Vavra G,Gebauer D,Schmid R. Multiple zircon growth and recrystallization during polyphase Late Carboniferous to Triassic metamorphism in granulites of the Ivrea Zone(Southern Alps):An ion microprobe(SHRIMP)study[J]. Contribution to  Mineralogy et Petrology,1996,122:337-358.
[24]Vavra G,Schmid R,Gebauer D. Internal morphology,habit and U-Th-Pb microanalysis of amphibole to granulite facies zircon:Geochronology of the Ivren Zone(Southern Alps)[J].Contribution to Mineralogy Petrology,1999,134:380-404.
[25]Jian Ping,Liu Dunyi,Zhang Qi,et al. SHRIMP dating of ophiolite and leucocratic rocks within ophiolite[J].Earth Science Frontiers,2003,10(4):439-456.[简平,刘敦一,张旗,等. 蛇绿岩及蛇绿岩中浅色岩的SHRIMP U-Pb测年[J]. 地学前缘,2003, 10(4):439-456.]
[26]Wu Yuanbao,Zheng Yongfei. Genesis of zircon and its constraints on interpretation of U-Pb age[J].Chinese Science Bulletin,2004,49(15):1 544-1 569.[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):1 589-1 604.]
[27]Anderson T. Correction of common Pb in U-Pb analyses that do not report 204Pb[J].Chemical Geology,2002,192(1/2):59-79.
[28]Ludwig K R. Isoplot/Ex, Version 2.49. A Geochronological Toolkit for Microsoft Excel[M].Berkeley:Berkeley Geochronology Center Special Publication,1999:47.
[29]Yuan Honglin,Wu Fuyuan,Gao Shan,et al. Determination of U-Pb age and rare earth element concentrations of zircons from Cenozoic intrusions in northeastern China by laser ablation ICP-MS[J].Chinese Science Bulletin,2003,48(22):2 411-2 421.[袁洪林,吴福元,高山,等. 东北地区新生代侵入体的锆石激光探针U-Pb年龄测定与稀土元素成分分析[J]. 科学通报,2003,48(14):1 511-1 520.]
[30]Yuan H L,Gao S,Liu X M,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.

[1] 黄柯, 朱明田, 张连昌, 李文君, 高炳宇. 磁铁矿LA-ICP-MS分析在矿床成因研究中的应用[J]. 地球科学进展, 2017, 32(3): 262-275.
[2] 张鹏, 袁洪林, 徐建, 高莲凤, 张振国, 杨策. 印尼海区浮游有孔虫壳体Mg/Ca值的LA-ICP-MS原位微区分析[J]. 地球科学进展, 2016, 31(5): 494-502.
[3] 韩雨, 牛漫兰, 朱光, 吴齐, 李秀财, 王婷. 郯庐断裂带肥东段早白垩世中期走滑运动的年代学证据[J]. 地球科学进展, 2015, 30(8): 922-939.
[4] 余吉远,李向民,马中平,孙吉明,王建强. 青海省祁连县清水沟-白柳沟矿田含矿火山岩系年代学研究[J]. 地球科学进展, 2010, 25(1): 55-60.