Allanite U-Th-Pb geochronology by ion microprobe
文献类型：期刊论文
| 作者 | Xin, Liao2,3,4; Li, Qiu-li2,3,4; Whitehouse, M. J.1; Yang, Yue-heng2,4; Liu, Yu2,4 |
| 刊名 | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 35期号:3页码:489-497 |
| ISSN号 | 0267-9477 |
| DOI | 10.1039/c9ja00426b |
| 英文摘要 | Allanite, an epidote group mineral, occurs as a common accessory mineral in igneous, metamorphic rocks and hydrothermal deposits. It contains radioactive elements Th and U, making it a valuable U-Th-Pb geochronometer for various geological processes. Due to the structural and compositional complexity of allanite, in situ dating method is a better choice when the allanite is heterogeneous or has crystallized in multi-stage events. The wide variation of chemical compositions, however, raises the potential for matrix effects and complicates the use of in situ methods for allanite U-Th-Pb chronology. To address this issue, we made a comprehensive investigation on allanite U-Th-Pb chronology using Secondary Ion Mass Spectrometry (SIMS). Five allanite samples (CAP, Daibosatsu, SQ-51, Toba OTT, TARA allanite) with variable elemental compositions and common lead concentrations have been used. Allanites with variations in FeO (from 12.8 to 16.1 wt%) and similar ThO2 contents (around 1-2%) do not show significant matrix effects, as suggested by a previous study. While, obvious changes in calibration parameters (UO2+/U+, ThO2+/Th+) were noticed for allanites with a large range of Th contents (from 300 ppm to 2.0 wt%). By employing power law relationships between Pb+/U(+)versus UO2+/U+, Pb+/Th(+)versus ThO2+/Th+ with suitable exponentials, we do not observe obvious matrix effects with ThO2 concentrations variations. This study demonstrates that allanite can be a good geochronometer for multi-stage mineralization of hydrothermal deposits, providing valuable complementary information to zircon and monazite. |
| WOS关键词 | ISOTOPE SYSTEMATICS ; TOBA TUFFS ; MONAZITE ; ZIRCON ; EVOLUTION ; AGE ; CHEMISTRY ; GRANITES ; HISTORY ; OROGENY |
| 资助项目 | China Scholarship Council (CSC) ; National Key R&D Program of China[2016YFE0203000] ; National Nature Sciences Foundation of China[41525012] ; National Nature Sciences Foundation of China[41773044] ; National Nature Sciences Foundation of China[41673059] ; National Program for Support of Top-notch Young Professionals |
| WOS研究方向 | Chemistry ; Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000519646000003 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Nature Sciences Foundation of China ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals ; National Program for Support of Top-notch Young Professionals |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95590]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Li, Qiu-li |
| 作者单位 | 1.Swedish Museum Nat Hist, Box 50007, SE-10405 Stockholm, Sweden 2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xin, Liao,Li, Qiu-li,Whitehouse, M. J.,et al. Allanite U-Th-Pb geochronology by ion microprobe[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2020,35(3):489-497. |
| APA | Xin, Liao,Li, Qiu-li,Whitehouse, M. J.,Yang, Yue-heng,&Liu, Yu.(2020).Allanite U-Th-Pb geochronology by ion microprobe.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,35(3),489-497. |
| MLA | Xin, Liao,et al."Allanite U-Th-Pb geochronology by ion microprobe".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 35.3(2020):489-497. |
入库方式： OAI收割
来源：地质与地球物理研究所
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