Bulk Mg isotopic compositions of Ca-Al-rich inclusions and amoeboid olivine aggregates
文献类型：期刊论文
| 作者 | Wang, Guiqin; Lin, Yangting; Dai, Deqiu |
| 刊名 | METEORITICS & PLANETARY SCIENCE
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 42期号:7-8页码:1281-1289 |
| ISSN号 | 1086-9379 |
| 文献子类 | Article |
| 英文摘要 | High-precision Mg isotopic compositions of Ca-Al-rich inclusions (CAIs) from both Ningqiang (ungrouped) and Allende (CV3) carbonaceous chondrites and amoeboid olivine aggregations (AOAs) from Allende were analyzed by multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS). The CAIs from Allende plot on a line, with an infer-red initial Al-26/Al-27 ratio of (4.77 +/- 0.39) x 10(-5) close to the canonical value. This indicates a relatively closed Al-Mg system in the CAIs and no significant Mg isotope exchange with ambient materials, although two of the CAIs are severely altered. The AOAs contain excess Mg-26 and plot close to the CAI regression line, which is suggestive of their contemporary formation. The CAIs from Ningqiang define a different line with a lower inferred (Al-26/Al-27)(0) ratio of (3.56 +/- 0.08) x 10(-5). None of the CAIs and AOAs studied in this work shows significant mass fractionation with enrichment of the heavier Mg isotopes, arguing against air evaporation origin. |
| WOS关键词 | NINGQIANG CARBONACEOUS CHONDRITE ; EARLY SOLAR-SYSTEM ; REFRACTORY INCLUSIONS ; ALLENDE METEORITE ; GENETIC LINK ; CHONDRULES ; ORIGIN ; CONDENSATION ; EVOLUTION ; HETEROGENEITY |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000250472200016 |
| 出版者 | METEORITICAL SOC |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67670]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Lin, Yangting |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Guiqin,Lin, Yangting,Dai, Deqiu. Bulk Mg isotopic compositions of Ca-Al-rich inclusions and amoeboid olivine aggregates[J]. METEORITICS & PLANETARY SCIENCE,2007,42(7-8):1281-1289. |
| APA | Wang, Guiqin,Lin, Yangting,&Dai, Deqiu.(2007).Bulk Mg isotopic compositions of Ca-Al-rich inclusions and amoeboid olivine aggregates.METEORITICS & PLANETARY SCIENCE,42(7-8),1281-1289. |
| MLA | Wang, Guiqin,et al."Bulk Mg isotopic compositions of Ca-Al-rich inclusions and amoeboid olivine aggregates".METEORITICS & PLANETARY SCIENCE 42.7-8(2007):1281-1289. |
入库方式： OAI收割
来源：地质与地球物理研究所
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