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DOI | 10.1002/2017GL075225 |
Geochemical Constraints on the Size of the Moon-Forming Giant Impact | |
Piet, Helene1,2,3; Badro, James1,2; Gillet, Philippe2 | |
2017-12-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:23 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Switzerland; USA |
英文摘要 | Recent models involving the Moon-forming giant impact hypothesis have managed to reproduce the striking isotopic similarity between the two bodies, albeit using two extreme models: one involves a high-energy small impactor that makes the Moon out of Earth's proto-mantle; the other supposes a gigantic collision between two half-Earths creating the Earth-Moon system from both bodies. Here we modeled the geochemical influence of the giant impact on Earth's mantle and found that impactors larger than 15% of Earth mass result in mantles always violating the present-day concentrations of four refractory moderately siderophile trace elements (Ni, Co, Cr, and V). In the aftermath of the impact, our models cannot further discriminate between a fully and a partially molten bulk silicate Earth. Then, the preservation of primordial geochemical reservoirs predating the Moon remains the sole argument against a fully molten mantle after the Moon-forming impact. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419102400010 |
WOS关键词 | TERRESTRIAL PLANET FORMATION ; HF-W CHRONOMETRY ; CORE FORMATION ; MAGMA OCEAN ; OXIDATION-STATE ; EARTHS CORE ; EARLY DIFFERENTIATION ; SIDEROPHILE ELEMENTS ; SOLAR-SYSTEM ; ACCRETION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28990 |
专题 | 气候变化 |
作者单位 | 1.Sorbonne Paris Cite, Inst Phys Globe Paris, Paris, France; 2.Ecole Polytech Fed Lausanne, Earth & Planetary Sci Lab, Lausanne, Switzerland; 3.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA |
推荐引用方式 GB/T 7714 | Piet, Helene,Badro, James,Gillet, Philippe. Geochemical Constraints on the Size of the Moon-Forming Giant Impact[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(23). |
APA | Piet, Helene,Badro, James,&Gillet, Philippe.(2017).Geochemical Constraints on the Size of the Moon-Forming Giant Impact.GEOPHYSICAL RESEARCH LETTERS,44(23). |
MLA | Piet, Helene,et al."Geochemical Constraints on the Size of the Moon-Forming Giant Impact".GEOPHYSICAL RESEARCH LETTERS 44.23(2017). |
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