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Updated: May 12, 2026

06:04
Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 16, 2013
高貴ガスをコンベクトマントルに保存する
Helge M Gonnermann1, Sujoy Mukhopadhyay
1Department of Earth Science, Rice University, Houston, Texas 77005, USA. helge@rice.edu
Nature
|May 30, 2009
まとめ
潜水板を通した高貴ガスのリサイクルにより,マントルの濃度が薄くなり,高ヒリウム-3/ヘリウム-4比とアルゴン-40予算が解明され,ガスを除去した下部マントルの貯蔵庫を必要としない.
科学分野:
- 地質化学 地質化学
- 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:
- 海の島塩基岩の高い (3) He/(4) He比は,ガスのない下層マントルの貯水池を示唆している.
- 地球のアルゴン-40の予算は,ガスのないマントルの大きな貯蔵庫を暗示しています.
- 下層マントルへのスラブ潜水は,高貴ガスの広範な放出と矛盾しています.
研究 の 目的:
- 高濃度の高貴ガスとマントルの加工の証拠を調和させるため.
- 高い (3) He/(4) He比率と地球の (40) Ar予算の起源を説明するために.
主な方法:
- 地球のマントル内の高貴ガスのリサイクルと混合をモデル化.
- マントルのガスの排出速度に対するスラブ沈殿の影響を分析する.
- モデルの予測を地球物理学的および地球化学的観測と比較する.
主要な成果:
- 高貴ガス欠乏板のリサイクルにより,マントルの高貴ガス濃度が薄くなります.
- この希釈は,マントルの脱ガス速度を低下させ,下部マントルの貴気ガスを保存します.
- このモデルは,高度の (3) He/(4) He比率と,孤立した貯水池のない (40) Ar予算を説明しています.
結論:
- プレートリサイクルと混合の単純なモデルは,マントルの貴気ガスサインを説明します.
- 原始的な貴金属ガスを保存するために,隠された貯蔵庫や長期間の下層マントルの隔離は必要ありません.
- 上層マントルと下層マントルの間の異なる処理速度が, (3) He / (4) He比の変動を説明しています.
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