火星のCandor Chasmaの骨折制御された古流体の流れ
Chris H Okubo1, Alfred S McEwen
1Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA. chriso@lpl.arizona.edu
Science (New York, N.Y.)
|February 17, 2007
まとめ
火星のCandor Chasmaの関節に沿って局所的な流体変化ゾーンが見つかりました. これは,破裂を通過した過去の地下液体の流れを示し,破裂した堆積物が火星の地質的な水の歴史を研究するための重要な場所であることを強調しています.
科学分野:
- 惑星科学は惑星科学である.
- 地質学 地質学 地質学
- 天体生物学 アストロバイオロジー
背景:
- 火星のCandor Chasmaの層状の堆積物は,惑星の地質学的な過去の記録を保存しています.
- 流体と岩の相互作用を理解することは,火星の水文史を解読する上で極めて重要です.
研究 の 目的:
- 西部のカンドル・チャズマの層層の堆積物の中の過去流体変化の証拠を調査する.
- 火星の地下流体移動における骨折の役割を決定する.
主な方法:
- 火星偵察軌道探査機 (MRO) に搭載された高解像度画像科学実験 (HiRISE) による色彩観測の分析.
- 層層の堆積物内の接合点に沿った局所的なセメントと漂白ゾーンの特定.
主要な成果:
- 関節に沿って,セメントと漂白を含む局所的な流体変化の観測されたゾーン.
- これらの変異領域は,過去の地下流体移動とセメント化を示しています.
- その後の侵食により,地表のこれらの地下構造の変化が表面に露呈した.
結論:
- 骨折に沿った液体の流れは,これらの火星層の堆積物における地下液体の移動のための重要なメカニズムでした.
- 火星上の水の地質学的歴史に関する将来の調査のための有望なターゲットとして,断裂した層状の堆積物が特定されています.
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