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Updated: Jun 30, 2026

06:04
Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 16, 2013
初期の太陽系の小惑星の表面に広がったマグマの海は,太陽系初期に存在していた
Richard C Greenwood1, Ian A Franchi, Albert Jambon
1PSSRI, Open University, Walton Hall, Milton Keynes MK7 6AA, UK. r.c.greenwood@open.ac.uk
Nature
|June 17, 2005
まとめ
初期の太陽系惑星系は地球規模で融解し,マグマの海を形成した. この過程で層状の天体が形成され,地球のような惑星の組成に影響を与えました.
科学分野:
- 惑星科学は惑星科学である.
- 宇宙化学 (コスモケミストリー)
- 地質学 地質学 地質学
背景:
- 惑星体は太陽系の歴史の初期に形成されました.
- 小惑星の火性活動が議論され,小規模な融解からマグマの海までさまざまな理論が論じられている.
- 初期の惑星体の組成は,惑星の最終的な構造に影響を与えた.
研究 の 目的:
- 初期の小惑星の火性活動の本質を調査するために.
- マグマの海が分化太陽系天体で一般的であったかどうかを判断するために.
- 初期の惑星のプロセスが惑星の組成にどのように影響したかを理解する.
主な方法:
- ベースアルティック隕石群 (HEDとアングライト) の酸素同位体分析.
- 小惑星4ヴェスタからの隕石 (HEDs) と未確認の源 (angrites) を研究する.
主要な成果:
- HEDとアングライト隕石のスイートの両方で,早期の,地球規模の融解イベント (>50%) の証拠.
- 採取した太陽系の全ての異なる天体でマグマの海が存在していることが確認された.
- マグマの海は,組成的に層を重ねたプラネテシマルの形成につながった.
結論:
- 初期の太陽系惑星系は,地球規模の大規模な融解を経験しました.
- マグマ海洋は,太陽系の初期に広く存在していた現象である.
- マグマ海洋によって形成された層状の惑星系は,地球の高いMg/Si比率などの異常な惑星の特徴を説明することができます.
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