冀中坳陷饶阳凹陷新生代伸展与走滑关系研究

发布时间：2018-03-25 00:03

本文选题：关系　切入点：伸展作用　出处：《中国石油大学(华东)》2015年硕士论文

【摘要】：饶阳凹陷是冀中坳陷的主要生油凹陷之一,新生代以来发育有多种规模和类型的伸展与走滑构造。本文在区域地质背景、三维地震资料、构造顶面资料、录井、测井等资料的综合分析的基础上,主要对饶阳凹陷伸展与走滑构造的构造几何学、运动学和动力学机制进行了研究。通过三维地震资料和区域地质特征分析,明确了饶阳凹陷伸展与走滑构造的几何学特征;通过计算伸展量、伸展率、地层落差以及平衡剖面回剥技术,恢复了饶阳凹陷伸展与走滑形成与演化过程;最后结合构造物理模拟实验、深、浅部的地质响应及其区域动力学背景,明确了饶阳凹陷伸展与走滑构造的形成机制。研究表明:NNE、NE向发育的马西、河间、留路、武邑和高阳-博野断层为饶阳凹陷的一级控凹伸展断层,受这些断层的影响,凹陷内部同时发育许多低级别的调节伸展正断层,区内的走滑构造与这些伸展断层共生,往往出现在正断层的末端、走滑构造带的有限区域内,产生了伸展与走滑构造样式多种多样。孔店-沙四时期伸展断层活动性具有南强北弱的特点,其中沙三时期是饶阳凹陷一级伸展断层发育的主要时期。东营期以后,整个凹陷发生明显的走滑作用,东部地区强于西部。新生代以来,整个凹陷都受到伸展与走滑作用的影响,但所占的比重有所不同,孔店-沙二期,伸展作用强于走滑作用,两者具有此消彼长的关系。沙一-新近纪,走滑作用明显。构造物理模拟实验结果表明,雁列式断层组合在伸展环境中也能存在,古近纪早期应力场还是以伸展作用为主。软流圈地幔的上涌导致莫霍面在冀中坳陷的隆升,同时伴随着太行山地区变质核杂岩和太行山东缘拆离断层的产生,冀中-汤阴裂陷带和霸县-束鹿-邯郸走滑构造带与饶阳凹陷的伸展与走滑作用有密切的联系。太平洋板块的俯冲、印度大陆和欧亚大陆持续的汇聚是饶阳凹陷发生伸展与走滑的动力来源。
[Abstract]:Raoyang sag is one of the main oil-generating sag in Jizhong depression. Since the Cenozoic there have been many kinds of extensional and strike-slip structures. Based on the comprehensive analysis of logging data, the structural geometry, kinematics and dynamics of extensional and strike-slip structures in Raoyang sag are studied. The geometric characteristics of extensional and strike-slip structures in Raoyang sag are clarified, and the formation and evolution of extensional and strike-slip structures in Raoyang sag are restored by calculating extensional amount, extensional rate, formation drop and balanced section stripping technique. Finally, the formation mechanism of extensional and strike-slip structures in Raoyang sag is clarified in combination with tectonic physical simulation experiments, deep and shallow geological responses and regional dynamic background. The Wuyi and Gaoyang-Boye faults are primary controlled concave extensional faults in Raoyang sag. Under the influence of these faults, many low-grade regulated extensional normal faults are developed in the sag, and the strike-slip structures in the sag are symbiotic with these extensional faults. It often appears at the end of normal fault and in the limited area of strike-slip structural belt, resulting in a variety of extensional and strike-slip structural styles. After Dongying period, obvious strike-slip occurred in the whole sag, which was stronger in the east than in the west. The whole sag is affected by extension and strike-slip, but its proportion is different. The extension is stronger than the strike-slip in the second stage of Kongdian to Sha, and the two have the relation of rising and falling. The structural physical simulation results show that the echelon fault assemblage can also exist in the extensional environment. In the early Paleogene, the stress field was mainly extensional. The upwelling of the asthenosphere mantle resulted in the uplift of Moho surface in Jizhong depression, accompanied by the occurrence of metamorphic core complex and the detachment fault of Taihang Shandong margin. Jizhong-Tangyin rift belt and Baxian Shulu Handan strike-slip belt are closely related to the extension and strike-slip of Raoyang sag. The continuous convergence of Indian and Eurasian continents is the driving force of extension and strike-slip in Raoyang Sag.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P542

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