まとめ
火山は,裂け目地帯の正常な断層の近くで形成されることが多い. 折りたたむプレートモデルは,地殻の変形が膨張張張力場を作り,マグマが上昇して火山を形成することを可能にすることを示しています.
科学分野:
- 地質学 地質学 地質学
- 火山学 火山学とは
- テクトニクス (地質学) とは
背景:
- 火山は,大陸裂域内の正常な断層の足壁の側面で頻繁に発生します.
- この関連性は,典型的に高い地形とこれらのサイトで観察された小さな圧縮構造のために不思議です.
研究 の 目的:
- 大陸断層の正常な断層と火山活動の謎の関係を調査する.
- 普通の断層の足壁に火山の建物がどのように形成されるかを説明するために.
主な方法:
- 地殻の変形をシミュレートするために,単純な屈折板モデルが使用されました.
- 分析は,正常な断層形成時に上層地殻で発生するストレンスフィールドに焦点を当てた.
主要な成果:
- 屈曲的に支えられた上部地殻の正常な断層は,地殻の底部で膨張張張力場を生成します.
- この特殊な張力場は,以前に存在していたマグマの裂け目やタップを容易にする.
結論:
- この研究は,大陸裂縫の正常な断層の足壁に火山が発生するメカニカルな説明を提供します.
- 断層形成中の屈曲的変形は,マグマ上昇の経路を作成する鍵です.
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