Seeking the primary compositions of mantle xenoliths: Isotopic and elemental consequences of sequential leaching treatments on an eclogite suite
文献类型：期刊论文
| 作者 | Huang, Jin-Xiang1,2,3,4; Griffin, William L.1,2; Greau, Yoann1,2,5; O'Reilly, Suzanne Y.1,2 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2012-10-18 |
| 卷号 | 328页码:137-148 |
| ISSN号 | 0009-2541 |
| 关键词 | Leaching experiment Xenolithic eclogite Mantle melts Mantle fluids Origin of Eu anomalies |
| DOI | 10.1016/j.chemgeo.2011.11.035 |
| 文献子类 | Article |
| 英文摘要 | Three leaching methods have been tested on garnet and clinopyroxene separates from Roberts Victor xenolithic eclogites, in an attempt to remove secondary materials and uncover the primary compositions of the samples. A "typical" leaching treatment commonly used to clean mineral separates proved insufficient. However, the secondary material can be completely removed by treating the separates in 80 degrees C 6 N HCl for approximately 14 h, followed by 6 N HNO3 and then washing in MQ water ultrasonically for 20 min three times. Further leaching produced no change in the isotopic composition (Sr, Nd, Hf) of the residual minerals. The leaching process produces largest relative changes in Sr-isotope compositions, and less in Nd- and Hf-isotope compositions. After this leaching process, measurement of the primary isotopic compositions of Sr, Nd and Hf in the eclogitic garnets can be achieved. The HREE patterns of the leachates are similar to those of the host minerals, but the leachates are enriched in LREE and LILE and show pronounced positive Eu anomalies. The leachable material is a mixture of the primary host minerals and secondary minerals (+/- fluid inclusions) deposited by a metasomatic melt/fluid. The leachates have very radiogenic Sr-isotope compositions (Sr-87/Sr-86 = 0.706-0.712 at the time of kimberlite eruption time (128 Ma)) and this range suggests that the melt/fluid was heterogeneous in terms of Sr-isotope composition, and that it may be related to diamond-forming fluids. The results for these samples suggest that some Eu anomalies, commonly used to shallow crustal processes, such as plagioclase fractionation, in eclogite protoliths were actually introduced by a secondary melt/fluid percolating in the lithospheric mantle. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS关键词 | PERIDOTITE XENOLITHS ; TRACE-ELEMENT ; OCEANIC-CRUST ; SOUTH-AFRICA ; SM-ND ; LU-HF ; METASOMATISM ; SR ; SYSTEMATICS ; GEOCHEMISTRY |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000310124900008 |
| 资助机构 | Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; ARC Discovery grant ; ARC Discovery grant ; ARC Discovery grant ; ARC Discovery grant ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; ARC LIEF ; ARC LIEF ; ARC LIEF ; ARC LIEF ; NCRIS ; NCRIS ; NCRIS ; NCRIS ; Macquarie University ; Macquarie University ; Macquarie University ; Macquarie University ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; ARC Discovery grant ; ARC Discovery grant ; ARC Discovery grant ; ARC Discovery grant ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; ARC LIEF ; ARC LIEF ; ARC LIEF ; ARC LIEF ; NCRIS ; NCRIS ; NCRIS ; NCRIS ; Macquarie University ; Macquarie University ; Macquarie University ; Macquarie University ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; ARC Discovery grant ; ARC Discovery grant ; ARC Discovery grant ; ARC Discovery grant ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; ARC LIEF ; ARC LIEF ; ARC LIEF ; ARC LIEF ; NCRIS ; NCRIS ; NCRIS ; NCRIS ; Macquarie University ; Macquarie University ; Macquarie University ; Macquarie University ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; Macquarie University postgradute scholarships ; ARC Discovery grant ; ARC Discovery grant ; ARC Discovery grant ; ARC Discovery grant ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; DEST Systemic Infrastructure Grants ; ARC LIEF ; ARC LIEF ; ARC LIEF ; ARC LIEF ; NCRIS ; NCRIS ; NCRIS ; NCRIS ; Macquarie University ; Macquarie University ; Macquarie University ; Macquarie University |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84766]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Huang, Jin-Xiang |
| 作者单位 | 1.Macquarie Univ, ARC Ctr Excellence Core Crust Fluid Syst, N Ryde, NSW 2109, Australia 2.Macquarie Univ, GEMOC Natl Key Ctr, Dept Earth & Planetary Sci, N Ryde, NSW 2109, Australia 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 5.Univ Montpellier 2, CNRS UMR 5243, Equipe Manteau Noyau, Geosci Montpellier, F-34095 Montpellier 5, France |
| 推荐引用方式 GB/T 7714 | Huang, Jin-Xiang,Griffin, William L.,Greau, Yoann,et al. Seeking the primary compositions of mantle xenoliths: Isotopic and elemental consequences of sequential leaching treatments on an eclogite suite[J]. CHEMICAL GEOLOGY,2012,328:137-148. |
| APA | Huang, Jin-Xiang,Griffin, William L.,Greau, Yoann,&O'Reilly, Suzanne Y..(2012).Seeking the primary compositions of mantle xenoliths: Isotopic and elemental consequences of sequential leaching treatments on an eclogite suite.CHEMICAL GEOLOGY,328,137-148. |
| MLA | Huang, Jin-Xiang,et al."Seeking the primary compositions of mantle xenoliths: Isotopic and elemental consequences of sequential leaching treatments on an eclogite suite".CHEMICAL GEOLOGY 328(2012):137-148. |
入库方式： OAI收割
来源：地质与地球物理研究所
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