東南極の裂け方は,ガンブルツェフ山脈の上昇を引き起こします
Fausto Ferraccioli1, Carol A Finn, Tom A Jordan
1British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK. ffe@bas.ac.uk
Nature
|November 19, 2011
まとめ
ガムルツェフ亜氷河山脈 (Gamburtsev Subglacial Mountains) とは,ガムルツェフ亜氷河山脈 (Gamburtsev Subglacial Mountains) と呼ばれている.
科学分野:
- 地質物理学 地質物理学とは地質物理学です.
- テクトニクス (地質学) とは
- 地質学 地質学 地質学
背景:
- ガムルツェフ亜氷河山脈は,東南極の氷床の下に隠されています.
- その高い標高とアルプスの地形は,その起源がほとんど理解されていないため,パラドックスです.
研究 の 目的:
- ガムルツェフ亜氷河山脈の地殻構造と上昇機構を調査する.
- 東南極の氷床の下にあるアルプスの地形が保存されているというパラドックスを説明するために.
主な方法:
- レーダー,重力,磁気調査を含む地質学的データを活用した.
- 山の標高と地形を説明するモデルを開発した.
主要な成果:
- ガンブルツェフを囲む2500kmの裂け目システムを特定しました.
- 山脈の下にある厚い地殻の根を明らかにし,プロテロゾーイク時代に形成され,後の裂け目によって若返った.
- 裂け目の側面の上昇,根の浮力,侵食が山の地形にどのように貢献するかモデル化しました.
結論:
- ガンブルツェフ山脈の地形は,裂け込みプロセスと保存されたオロゲン系根の組み合わせによって説明されています.
- 裂け目と古代のオロゲン系根は,広範囲の石層の改変なしに大陸の内部で高い地形を作り出すことができます.
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