Helium and neon isotopic compositions in the ophiolites from the Yarlung Zangbo River, Southwestern China: The information from deep mantle
文献类型：期刊论文
| 作者 | Ye XianRen; Tao MingXin; Yu ChuanAo; Zhang MingJie |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2007-06-01 |
| 卷号 | 50期号:6页码:801-812 |
| 关键词 | Yarlung Zangbo River (Tibet) ophiolite helium neon isotope plume |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-007-0017-9 |
| 文献子类 | Article |
| 英文摘要 | The ophiolites from the Yarlung Zangbo River (Tibet), Southwestern China, were analysed for the contents of helium and neor and their isotopic compositions by stepwise heating. The serpentinites from Bainang showed a high He-3/He-4 value of 32.66R(a) (R-a is referred to the He-3/He-4 ratio in the present air) in 700 degrees C fraction. At lower iemperature, all of the dolerites displayed as very high He-3/He-4 ratios as ones investigated for hotspots. It was clear that the high He-3/He-4 ratio was one of immanent characterics in the magma source formed the dolerites, suggesting that there was a large amount of deep mantle fluids in these rocks. In the three-isotope diagram of neon, the data points from the ophiolites of the Yarlung Zangbo River were arranged along the Loihi Line. This is in agreement with the characteristics of helium isotopes, revealing that the high-He-3 plume from deep mantle had played an important role in the formation of the Neo-Tethyan Ocean. The helium isotopic compositions in the basalts were far higher than atomospheric value but lower than the average value of MORB, although there were various degrees of alteration. The possible reasons were that basaltic magmas had been contaminated by crust-derived fluids. |
| WOS关键词 | PILLOW BASALT GLASSES ; NOBLE-GAS SYSTEMATICS ; XIGAZE OPHIOLITE ; SOUTHERN TIBET ; SUTURE ZONE ; INDIAN-OCEAN ; ULTRAMAFIC XENOLITHS ; SUBMARINE BASALTS ; HE-3/HE-4 RATIOS ; SOLAR COMPONENT |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000247829600001 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67372]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Ye XianRen |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Dept Geol, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye XianRen,Tao MingXin,Yu ChuanAo,et al. Helium and neon isotopic compositions in the ophiolites from the Yarlung Zangbo River, Southwestern China: The information from deep mantle[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2007,50(6):801-812. |
| APA | Ye XianRen,Tao MingXin,Yu ChuanAo,&Zhang MingJie.(2007).Helium and neon isotopic compositions in the ophiolites from the Yarlung Zangbo River, Southwestern China: The information from deep mantle.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,50(6),801-812. |
| MLA | Ye XianRen,et al."Helium and neon isotopic compositions in the ophiolites from the Yarlung Zangbo River, Southwestern China: The information from deep mantle".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 50.6(2007):801-812. |
入库方式： OAI收割
来源：地质与地球物理研究所
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