Distribution of hydrous components in jadeite of the Dabie Mountains
文献类型：期刊论文
| 作者 | Su, W; Ji, ZP; Ye, K; You, ZD; Liu, JB; Yu, J; Cong, BL |
| 刊名 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 出版日期 | 2004-05-15 |
| 卷号 | 222期号:1页码:85-100 |
| 关键词 | hydrous components jadeite UHP metamorphism Dabie Mountains |
| ISSN号 | 0012-821X |
| DOI | 10.1016/epsl.2004.02.028 |
| 文献子类 | Article |
| 英文摘要 | Two kinds of jadeite occur in the jadeite-quartzite from the Dabie Mountains, Eastern China: associated either with weak or strong deformation. The former shows a uniform composition while the latter shows both uniform and zoning composition. These jadeites were examined with infrared (IR) spectroscopy. All jadeite displays hydroxyl (OH) stretching bands, implying that hydrous components commonly exist in jadeite. The concentration of the hydrous components in the jadeite with weak deformation is homogenous, whereas the concentration of the hydrous components in strongly deformed samples is variable. The correlation between the intensity of OH-band absorbance and compositional zoning of jadeite with strong deformation indicates that Na-rich jadeite can accommodate more OH than Na-poor jadeite. Its interpretation is that there is more Na associated with greater OH availability in the initial crystallization environment. Our data of the comparatively high OH concentrations recorded in the core of the jadeite which contains relative high vacancies in M2 site imply that both OH content and the vacancies in M2 site could decrease during exhumation of the jadeite-quartzite. The decrease of OH solubility in jadeite would result in the formation of H2O fluid during the early exhumation of UHP metamorphic rocks. The H2O fluid transformed from OH during exhumation could trigger and enhance the early retrograde metamorphism of the host rocks and facilitate plastic deformation of jadeite grain by dislocation creep and diffusion creep. (C) 2004 Elsevier B.V. All rights reserved. |
| WOS关键词 | NOMINALLY ANHYDROUS MINERALS ; WESTERN GNEISS REGION ; EAST-CENTRAL CHINA ; HIGH-PRESSURE ; ECLOGITE ; WATER ; FLUID ; COESITE ; ISOTOPE ; METAMORPHISM |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000221502000007 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/79519]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Su, W |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Lab Lithosphere Tecton Evolut, Beijing 100029, Peoples R China 2.China Univ Geosci, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, W,Ji, ZP,Ye, K,et al. Distribution of hydrous components in jadeite of the Dabie Mountains[J]. EARTH AND PLANETARY SCIENCE LETTERS,2004,222(1):85-100. |
| APA | Su, W.,Ji, ZP.,Ye, K.,You, ZD.,Liu, JB.,...&Cong, BL.(2004).Distribution of hydrous components in jadeite of the Dabie Mountains.EARTH AND PLANETARY SCIENCE LETTERS,222(1),85-100. |
| MLA | Su, W,et al."Distribution of hydrous components in jadeite of the Dabie Mountains".EARTH AND PLANETARY SCIENCE LETTERS 222.1(2004):85-100. |
入库方式： OAI收割
来源：地质与地球物理研究所
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