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EPISODIC CHARACTERISTICS OF FAULTS AND THEIR EFFECTS ON SEDIMENTARY AND STRUCTURAL EVOLUTION DURING PALEOGENE:A CASE STUDY OF DONGPU DEPRESSION
Author(s): TANG Min-an, WANG Hua
Pages: 55-
59
Year: 2008
Issue:
3
Journal: MARINE GEOLOGY & QUATERNARY GEOLOGY
Keyword: 断裂; 幕式活动; 盆地演化; 古近纪; 东濮凹陷;
Abstract: 通过对东濮凹陷古近纪的沉降史分析, 揭示了该区古近纪断裂活动的幕式特征,探讨了断裂活动的幕式特征对盆地沉积、构造演化的控制作用.指出古近纪的断裂活动具有明显的五幕式特征,即初始活动期(Es4)、快速活动期(Es34)、衰减期(Es33)、再活化期(Es32- Es22)及收缩期(Es21- Ed);断裂活动的幕式特征直接控制着盆地古近系的三级层序界面和沉积演化特征;断裂活动的五幕式特征直接控制着盆地构造演化阶段,相应形成初始断陷期(Ek-Es4)、快速断陷期(Es34)、衰减期(Es33)、再活化期(Es32-Es22)和收缩期(Es21-Ed).
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