LA-ICPMS与EPMA结合测定铀矿物微区原位U-Pb年龄

详细信息    查看全文 | 推荐本文 |

英文篇名：U-Pb Isotopic Dating in Situ Microanalysis of Uranium Minerals by EPMA and LA-ICPMS 作者：叶丽娟 ; 肖志斌 ; 涂家润 ; 耿建珍 ; 张健 ; 许雅雯 ; 郭虎 ; 崔玉荣 ; 张永清 英文作者：YE Li-juan;XIAO Zhi-bin;TU Jia-run;GENG Jian-zhen;ZHANG Jian;XU Ya-wen;GUO Hu;CUI Yu-rong;ZHANG Yong-qing;Laboratory of Non-fossil Energy Minerals, Tianjin Center of China Geological Survey; 关键词：LA-ICPMS ; EPMA ; 铀矿物 ; 微区原位U-Pb同位素年龄 英文关键词：LA-ICPMS;;EPMA;;uranium minerals;;U-Pb isotopic age 中文刊名：DQXB 英文刊名：Acta Geoscientica Sinica 机构：中国地质调查局天津地质调查中心非化石能源矿产实验室; 出版日期：2018-09-19 09:37 出版单位：地球学报 年：2019 期：v.40;No.179 基金：国家重点基础研究发展计划(973计划)资助(编号:2015CB453000)资助~~ 语种：中文; 页：DQXB201903009 页数：4 CN：03 ISSN：11-3474/P 分类号：106-109

摘要

晶质铀矿、沥青铀矿、铀石等铀矿物的微区原位U-Pb定年对研究铀矿床有着十分重要的意义。使用激光烧蚀电感耦合等离子体质谱(LA-ICPMS)与电子探针(EPMA)相结合的方法更加准确地测定铀矿物微区原位U-Pb年龄,既解决了EPMA不能测定同位素比值,无法准确扣除普通铅等不足,又解决了目前LA-ICPMS测定的铀矿物标样极少,标样难寻的困扰,从而有利于铀矿物微区原位U-Pb定年技术的推广使用,为铀矿床研究提供更准确的定年数据。这一定年方法不但在铀矿床的年代学研究中有重要的应用,在各种地质体的铀矿物U-Pb同位素年代学研究中也有广阔的应用前景。
        The U-Pb isotopic dating in situ microanalysis of high uranium minerals has a very important significance in research work. This project combines EPMA and LA-ICPMS. Researchers will obtain accurate U-Pb isotopic age in situ microanalysis of high uranium minerals. Researchers will strive to establish a feasible new method in situ microanalysis on high uranium minerals, and thus greatly improve the precision. It is hard to find the standard sample of uranium in LA-ICPMS, but the ratio of ~(206)Pb, ~(207)Pb and ~(208)Pb can be obtained directly.U and Pb content can be obtained by EPMA method. Then the isotope age can be yielded precisely. Researchers will solve the problem of LA-ICPMS standard sample and the EPMA defect of failing to deduce ordinary lead.Therefore the mineralization ages of some uranium deposits can be obtained by directly analyzing the high uranium minerals. The important applications and broad prospects of this new approach can be used not only in the study of uranium deposits dating but also in other geological bodies with high uranium.

引文

崔建勇,郭冬发,侯艳先,张彦辉,谭靖,刘宇昂,武朝晖.2005.沥青铀矿的年龄测定方法改进[J].地球学报,26(S1):33-34.
    葛祥坤.2008.电子探针U-Th-Pb微区测年法及其在铀矿地质中的应用前景[J].铀矿地质,24(3):175-180.
    葛祥坤,秦明宽,范光.2011.电子探针化学测年法在晶质铀矿、沥青铀矿定年研究中的应用现状[J].世界核地质科学,28(1):55-62.
    葛祥坤,秦明宽,范光.2013.电子探针定年技术在晶质铀矿定年中的研究与应用[J].矿物学报(S1):1017-1018.
    郭冬发,崔建勇,谭靖,侯艳先,武朝晖,刘宇昂,张彦辉.2005.FS-ICPMS和TIMS联用法测定微粒铀矿物的年龄[J].质谱学报,26(10):85-86.
    姜耀辉,蒋少涌,凌洪飞.2004.地幔流体与铀成矿作用[J].地学前缘,11(2):491-499.
    李妩巍.2005.MapGIS在地质制图中的应用[J].铀矿地质,21(6):370-375.
    刘汉彬,夏毓亮,林锦荣,范光.2004.吐哈盆地砂岩型铀矿U-Pb同位素地质特征[J].地球学报,25(2):196-198.
    罗晶晶.2016.浅谈砂岩型铀矿基本特征及其定年现状研究[J].地下水,38(3):245-247.
    孙占学,刘金辉,朱永刚,张文.2004.砂岩铀矿成矿过程与氧化还原分带:铀系不平衡证据[J].地球科学,29(2):224-230.
    宗克清,陈金勇,胡兆初,刘勇胜,李明,范洪海,孟艳宁.2015.铀矿fs-LA-ICP-MS原位微区U-Pb定年[J].中国科学,45(9):1304-1315.
    CUI Jian-yong,GUO Dong-fa,HOU Yan-xian,ZHANG Yan-hui,TAN Jing,LIU Yu-ang,WU Chao-hui.2005.The Improvement of Age Determination Technique for Pitchblende[J].Acta Geoscientica Sinica,26(S1):33-34(in Chinese with English abstract).
    GE Xiang-kun.2008.The U-Pb dating method of electron probe microanalysis and its application foreground in uranium geology research[J].Uranium Geology,24(3):175-180(in Chinese with English abstract).
    GE Xiang-kun,QIN Ming-kuan,FAN Guang.2011.Review on the application of electron microprobe chemical dating method in the age research of uraninite/pitchblende[J].World Nuclear Geoscience,28(1):55-62(in Chinese with English abstract).
    GE Xiang-kun,QIN Ming-kuan,FAN Guang.2013.The dating method research of electron probe microanalysis on uranium mineral[J].Acta Mineralogica Sinica,(S1):1017-1018(in Chinese).
    GUO Dong-fa,CUI Jian-yong,TAN Jing,HOU Yan-xian,WUZhao-hui,LIU Yu-ang,ZHANG Yan-hui.2005.Age dating of uranium mineral particles by FS-ICPMS and TIMS[J].Journal of Chinese Mass Spectrometry Society,26(10):85-86(in Chinese with English abstract).
    JIANG Yao-hui,JIANG Shao-yong,LING Hong-fei.2004.Mantle derived fluids and uranium mineralizetion[J].Earth Science Frontiers,11(2):491-499(in Chinese with English abstract).
    LUO Jin-cheng,HU Rui-zhong,FAYEK M,LI Chu-si,BIXian-wu,ABDU Y,CHEN You-wei.2015.In-situ SIMSuraninite U-Pb dating and genesis of the Xianshi granite-hosted uranium deposit,South China[J].Ore Geology Reviews,65:968-978.
    KAMPLE U.2003.Precise electron microprobe age determination in altered uraninite:consequences on the intrusion age and the metallogenic significance of the Kirchberg granite(Erzgebirge,Germany)[J].Contributions to Mineralogy&Petrology,145:107-118.
    LI Wu-wei.2005.The application of MaoGIS to geological mapping[J].Uranium Geology,21(6):370-375(in Chinese with English abstract).
    LIU Han-bin,XIA Yu-liang,LIN Jin-rong,FAN Guang.2004.Isotope Geology of the Sandstone Type Uranium Deposit in Turpan-Hami Basin[J].Acta Geoscientica Sinica,25(2):196-198(in Chinese with English abstract).
    LUO Jing-jing.2016.Characteristics and dating of Sandstone-Type uranium deposits[J].Ground Water,38(3):245-247(in Chinese).
    SOPHIE D,ETIENNE D,THIERRY D P,STIJN D,FLORIAS M,JOHAN Y,CHRISTIAN M.2011.SIMS U-Pb dating of uranium mineralization in the Katanga Copperbelt:Constraints for the geodynamic context[J].Ore Geology Reviews,40:81-89.
    SUN Zhan-xue,LIU Jin-hui,ZHU Yong-gang,ZHANG Wen.2004.Ore-Forming Process and Redox Zoning of Sandstone-Type U Deposits:Evidence from U Series Disequilibrium[J].Earth Science,29(2):224-230(in Chinese with English abstract).
    ZONG Ke-qing,CHEN Jin-yong,HU Zhao-chu,LIU Yong-sheng,LI Ming,FAN Hong-hai,MENG Yan-ning.2015.In-situ U-Pb dating of uraninite by fs-LA-ICP-MS[J].Science China,45(9):1304-1315(in Chinese).