マントルの羽根の上の非対称な3次元地形図である
11] Sorbonne Universités, UPMC Université Paris 06, UMR 7193, Institut des Sciences de la Terre Paris (iSTeP), F-75005 Paris, France [2] CNRS, UMR 7193, Institut des Sciences de la Terre Paris (iSTeP), F-75005 Paris, France.
Nature
|September 5, 2014
まとめ
マントルの羽根は,大陸の複雑で非対称な地形を作り,滑らかで放射的なパターンの考えに挑戦します. 大陸の構造と緊張は,ダイナミックな地形とマントルの上流の上の裂け目に大きく影響する.
科学分野:
- ジオダイナミクスは地力学です.
- テクトニクス (地質学) とは
- ジオモルフォロジー ジオモルフォロジー
背景:
- マントル・リトスフィアの相互作用は,表面地形学にとって極めて重要です.
- マントルの羽根は,典型的には軸対称的地形を形成し,短波長構造地形と対照的です.
研究 の 目的:
- マントル・リトスフィアの相互作用とその大陸の地形に与える影響を調査する.
- マントルの羽根誘発型地形に関する既存のモデルに異議を唱える.
主な方法:
- 超高解像度,三次元数値モデリング.
- レオロギー的にリアルで,前圧力が弱い石層の組み込み.
主要な成果:
- 表面の進化は,複雑で非対称で,小規模な3Dの特徴を示しています.
- 観測された特徴には,狭い/広い裂け目,屈曲的な上昇,および断層構造が含まれています.
- 結果は,滑らかで,半径対称なパターンから著しく異なります.
結論:
- 大陸のレオ学的構造とプレート内ストレスが動的地形を支配する.
- これらの要因は,マントル・リトスフィアの相互作用と,羽根の上の大陸の分裂を制御する.
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