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Updated: Jul 12, 2026
08:14
Atom Probe Tomography Analysis of Exsolved Mineral Phases
Published on: October 25, 2019
コルディエライト・スピネル・トロッコトライトは,月の高地からの新しいマグネシウムに富んだ石質学です
Science (New York, N.Y.)
|February 17, 1989
まとめ
アポロ15号のサンプルの中に,Mgに富んだ新しい月の岩石,コルディエライトとスピネルトロクトライトが発見されました. この発見は,スピネルが月の地殻に蓄積されることが一般的であり,発掘には大きな衝撃が必要であることを示唆しています.
科学分野:
- * 月の地質学と石油学
- * 地球外物質の鉱物学と地化学
背景:
- *アポロ15のレゴリットブレチア15295には,様々な石理学が含まれています.
- *月の地殻の組成を理解するには,ブレキエートされたサンプルを分析する必要があります.
研究 の 目的:
- *月面のサンプルで新しいMg濃度のリトロジーを特定し,特徴づけること.
- * コルディエライトを含むスピネルトロクトライトの形成条件と影響を決定する.
主な方法:
- * ブレッチャ15295.5内のクラストのペトログラフィック分析
- * コルディエライト,アノルタイト,フォレステリトオリヴィン,プレオナスト・スピネルの鉱物学的識別.
主要な成果:
- * 8%のコルディエライト (Mg(2)Al(4)Si(5)O(18) を含むスピネルトロクトライトの識別.
- * このアセンブリージは,新しいMgに富んだ月面高原の石質学を表しています.
- * コルディエライト-フォーステライトのペアは,最大2.5キロバー (約1.3キロバー) の安定性を示しています. 50kmの深さ).
結論:
- * スピネルの蓄積は,月面の下部地殻の重要で,以前は過小評価されていた構成要素である.
- * この石器の希少性は,インブリウム盆地のような大きな衝撃イベントによる発掘を示唆しています.
- *この発見は,月の地殻の進化と組成に関する私たちの理解を広げています.
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