ハワイのマントルの羽根の化学構造
Zhong-Yuan Ren1, Stephanie Ingle, Eiichi Takahashi
1Department of Earth and Planetary Sciences, Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, 152-8551, Japan. zyren@jamstec.go.jp
Nature
|August 16, 2005
まとめ
ハワイの皇帝火山の連鎖である.
科学分野:
- 地質化学 地質化学
- 火山学 火山学とは
- 地質物理学 地質物理学とは地質物理学です.
背景:
- ハワイアン皇帝火山の連鎖は,マントルの深い羽根と結びついている.
- 火山は地化学的変化を示し,マントルの源泉がゾーン化されていることを示唆しています.
- 融解インクルージョンは,マントルの源の複雑さについての洞察を提供します.
研究 の 目的:
- ハワイのマントルの羽根の組成構造を調査するために.
- 羽根が集中的にゾーン化されているかどうかを判断する.
- ハワイの溶岩における地化学的変動の源を理解するために.
主な方法:
- 主要元素と微量元素の組成物の分析.
- オリヴィンに宿る溶融インクルージョンの検査.
- ハワイの火山のシールドステージの研究.
主要な成果:
- "ケア"と"ロア"の両方の地化学的シグネチャは,個々の火山内の溶融インクルージョンで見つかりました.
- すべての分析された溶岩に2つのマントル源成分が一貫して存在している.
- 単一の岩石サンプル内で観測された地球化学的変動.
結論:
- ハワイのマントルの羽根は,構成上集中的にゾーン化されている可能性は低い.
- 観測された化学的変動は,羽根の熱構造によって制御される可能性が高い.
- 単一のマントルの源成分が個々の溶岩流を支配するかもしれませんが,複数の成分は常に存在します.
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