Hf-W isotopic constraints on early evolution of the Earth
文献类型：期刊论文
| 作者 | Mei QingFeng1,2,3; Yang JinHui1,2,3 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2018 |
| 卷号 | 34期号:1页码:207-216 |
| 关键词 | Extinct nuclides Core-mantle differentiation Lunar-forming giant impact Late veneer model |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | As one of the short-lived radioactive systems, Hf-182- W-182 system can well constrain the accretion and differentiation processes in the evolution of the early Earth. Based on the review of Hf-W isotopic evolution characteristics and W isotopic compositions of the lunar- and terrestrial- mantle, we suggest that the continuity and openness of the Earth's core-mantle differentiation process induce the uncertainties of dating it using the Hf-182 W-182 chronology. To acquire temporal information of the lunar-forming giant impact depends on the knowledge of Hf/W ratios of the bulk silicate Moon and Earth. We also discuss the mechanisms of W isotopic heterogeneity in the Earth's mantle and suggest that W isotopic anomalies in terrestrial rocks may be inherited from the Earth's mantle prior to the late veneer, or be the radiogenic results of source regions obtaining diverse Hf/W ratios during the lifetime of Hf-182. These conclusions provide critical constraints on the formation and evolution of terrestrial planets. |
| WOS关键词 | EARLY CORE FORMATION ; SIDEROPHILE ELEMENT ABUNDANCES ; EARLY MANTLE DIFFERENTIATION ; TERRESTRIAL PLANET FORMATION ; COSMIC-RAY PRODUCTION ; FORMING GIANT IMPACT ; BULK SILICATE EARTH ; EARLY SOLAR-SYSTEM ; TUNGSTEN ISOTOPES ; MAGMA OCEAN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000424882800018 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/82812]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yang JinHui |
| 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 Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mei QingFeng,Yang JinHui. Hf-W isotopic constraints on early evolution of the Earth[J]. ACTA PETROLOGICA SINICA,2018,34(1):207-216. |
| APA | Mei QingFeng,&Yang JinHui.(2018).Hf-W isotopic constraints on early evolution of the Earth.ACTA PETROLOGICA SINICA,34(1),207-216. |
| MLA | Mei QingFeng,et al."Hf-W isotopic constraints on early evolution of the Earth".ACTA PETROLOGICA SINICA 34.1(2018):207-216. |
入库方式： OAI收割
来源：地质与地球物理研究所
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