GSTDTAP  > 气候变化
DOI10.1002/2017GL075225
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
ISSN0094-8276
EISSN1944-8007
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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