Terrestrial magma ocean origin of the Moon
Terrestrial magma ocean origin of the Moon
复制标题
月球的陆地岩浆海洋起源
DOI:
10.1038/s41561-019-0354-2
复制
发表时间:
2019
影响因子:
18.3
通讯作者:
TR.
中科院分区:
文献类型:
--
作者:
Hosono;N.;Karato;S.;Makino;J.;Saitoh;TR.
A conceptual framework for the origin of the Moon must explain both the chemical and the mechanical characteristics of the Earth–Moon system to be viable. The classic concept of an oblique giant impact explains the large angular momentum and the lack of a large iron-rich core to the Moon, but in this scenario it is difficult to explain the similarity in the isotopic compositions of the Earth and Moon without violating the angular momentum constraint. Here we propose that a giant, solid impactor hit the proto-Earth while it was covered with a magma ocean, under the conventional collision conditions. We perform density-independent smoothed particle hydrodynamic collision simulations with an equation of state appropriate for molten silicates. These calculations demonstrate that, because of the large difference in shock heating between silicate melts and solids (rocks), a substantial fraction of the ejected, Moon-forming material is derived from the magma ocean, even in a highly oblique collision. We show that this model reconciles the compositional similarities and differences between the Moon and Earth while satisfying the angular momentum constraint.
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DOI:
10.1186/bf03352378
发表时间:
2001
期刊:
Earth, Planets and Space
影响因子:
--
作者:
R. Morishima;Sei‐ichiro Watanabe
通讯作者:
Sei‐ichiro Watanabe
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
R. Rufu;O. Aharonson;H. Perets
通讯作者:
H. Perets
影响因子:
13.6
作者:
G. Libourel;A. Nakamura;P. Beck;S. Potin;C. Ganino;S. Jacomet;R. Ogawa;S. Hasegawa;P. Michel
通讯作者:
P. Michel
DOI:
--
发表时间:
2014
期刊:
Proceedings of the Japan Academy. Series B, Physical and biological sciences
影响因子:
--
作者:
S. Karato
通讯作者:
S. Karato
影响因子:
3.2
作者:
Kaib, Nathan A.;Cowan, Nicolas B.
通讯作者:
Cowan, Nicolas B.