ダブル・フロード・ベサルトとプルームヘッドの分離は,660キロメートルの不連続性にある
Science (New York, N.Y.)
|November 25, 1994
まとめ
マントルの羽根は,二重の洪水ベースルートを説明することができます. 羽根の頭が分離し,最初の噴火を引き起こし,残りの管は数百万年後に第二の噴火を引き起こします.
科学分野:
- 地質学 地質学 地質学
- 地質物理学 地質物理学とは地質物理学です.
- 地球科学 地球科学 地球科学
背景:
- 世界中の洪水ベースルト州は,2つの主要な噴火期間があり,その間には2千万年から9千万年の間があります.
- 二重洪水ベースルトの現象は,繰り返される地質学的プロセスを示唆しています.
研究 の 目的:
- ダブル・フロード・ベースルト・イベントに起因するマントル・プームのダイナミクスを調査する.
- 連続した大きな火山地帯の間の観測された時間的な分離について,機械的な説明を提供すること.
主な方法:
- マントルの羽根の行動の理論的モデリング.
- 既知の洪水ベースルト州からの地質学的データの分析.
主要な成果:
- マントルの羽根の頭は,マントルの移行地帯でその管から離れる可能性があります.
- この分離は,最初の洪水ベースルト噴火につながります.
- 残った管路は新しい羽根を形成し,その後の噴火を引き起こします.
結論:
- マントルプルームヘッドの分離と再構成は,ダブルフロードベースアルトの実行可能なモデルを提供します.
- 噴火の間の予測された時間のギャップは地質学的観測と一致しています.
- このメカニズムは,大規模な火山活動とマントルの動態についての洞察を提供します.
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