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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Equilibration in the aftermath of the lunar-forming giant impact
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Equilibration in the aftermath of the lunar-forming giant impact

机译：月球形成巨大影响后的平衡

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Simulations of the moon-forming impact suggest that most of the lunar material derives from the impactor rather than the Earth. Measurements of lunar samples, however, reveal an oxygen isotope composition that is indistinguishable from terrestrial samples, and clearly distinct from meteorites coining from Mars and Vesta. Here we explore the possibility that the silicate Earth and impactor were compositionally distinct with respect to oxygen isotopes, and that the terrestrial magma ocean and lunar-forming material underwent turbulent mixing and equilibration in the energetic aftermath of the giant impact. This mixing may arise in the molten disk epoch between the impact and lunar accretion, lasting perhaps 10(2)-10(3) yr. The implications of this idea for the geochemistry of the Moon, the origin of water on Earth, and constraints on the giant impact are discussed. Published by Elsevier B.V.
机译：对形成月球的撞击的模拟表明，大多数月球物质都来自撞击器，而不是地球。然而，对月球样品的测量显示，氧同位素组成与地面样品无法区分，并且与火星和维斯塔铸造的陨石明显不同。在这里，我们探讨了以下可能性：硅酸盐地球和撞击器在成分上就氧同位素而言是不同的，并且在巨大撞击的高能后果中，岩浆海洋和月球形成物质经历了湍流混合和平衡。这种混合可能会在撞击和月球增生之间的熔融盘时代出现，可能持续10（2）-10（3）年。讨论了此想法对月球地球化学，地球上水的起源以及对巨大撞击的限制的含义。由Elsevier B.V.发布

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