まとめ
月の岩石における衝撃変形は,高圧変形と融解を明らかにする. 2つの衝突源と異なる溶融化学は,異なる月の地形が影響を受けたことを示唆しています.
科学分野:
- 地質学 地質学 地質学
- 惑星科学は惑星科学である.
- インパクトクラテリング (インパクトクラテリング)
背景:
- 衝撃変形は,惑星の体への衝撃イベントの重要な指標です.
- 月面の結晶岩やブレキアには,極端な圧力と温度があった証拠が保存されている.
研究 の 目的:
- 月面の結晶岩とブレキアスの衝撃変異の影響を調査する.
- プライマリ・インパクト・ショック・ソースとセカンダリー・インパクト・ショック・ソースを区別する.
- 衝撃による溶融の化学的変化を分析するために.
主な方法:
- 変形構造の岩石サンプルを顕微鏡で検査する.
- ショック特性のプラジオクラゼとピロキセンの分析.
- ショック誘発溶融ガラスの化学分析.
主要な成果:
- ショックの変形は,繊細な材料とブレキアで顕著であり,粗い断片では稀です.
- プラジオクラゼとピロキセンの変形構造,ダイアプレクティック・グラス,ショック・メルトの観察.
- 2つの主要な衝撃源が特定されました:隕石の衝突とクレーターから放出された衝撃.
- 衝撃誘発溶融の2つの主要な化学的タイプを区別した.
結論:
- 月の岩は,高圧イベントによる大きな衝撃変異を示しています.
- 衝撃衝撃波は,一次的および二次的な衝撃イベントの両方から発生します.
- 溶融の化学的差異は,マールや高地の衝突地点と相関しています.
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