过渡动力学背景下的张扭性断陷——以珠江口盆地惠州凹陷古近纪断陷为例

Petroleum Geology & Experiment(2009)

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Abstract
通过断陷结构、构造特征研究及与已有的物理模拟实验结果对比分析,论证了珠江口盆地惠州凹陷古近纪断陷具有典型的张扭性断陷性质,表现为其具有典型的斜列式结构特征,构成断陷的基本要素(如断陷内的洼陷、低凸起、边界断层等)均呈斜列式展布。推测其形成机制主要受主伸展应力方向与基底构造走向斜交控制,从而沿断陷走向产生走滑分量,进而使断陷具有张扭性特征。
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Key words
tense-shearing fault depression,en echelon construction,Pearl River Mouth Basin,Paleogene,Huizhou Sag
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