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西部凹陷东部陡坡带断坡控砂模式及其成藏特征研究 被引量:4

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摘要 西部凹陷东部陡坡带边界断裂长期继承性活动,构造运动复杂,是早期拉张和晚期走滑等多期构造应力共同作用的结果。根据边界断裂几何学和运动学的特征,将西部凹陷东部陡坡带北部的断坡类型分为铲式、阶梯式和坡坪式3类。不同断坡类型对盆地的沉积充填样式、砂体发育规模和油气藏类型具有明显的控制作用。研究结果表明,阶梯式断坡结构中断坡一方面控制扇体的发育,另一方面作为油源断裂沟通扇体与油源,成藏条件优越。铲式及坡坪式断坡结构中发育的低位湖底扇和滑塌浊积扇易形成岩性油气藏,为有利勘探目标。
出处 《长江大学学报(自科版)(上旬)》 CAS 2012年第10期33-36,40,共5页 JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI & ENG
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