冀中坳陷下第三系构造背斜成因分类  

Classification of paleogene anticlines by tectonic mechanism in Jizhong depression

作　　者：梁苏娟[1] 刘池洋[1] 王定一[1] 

机构地区：[1]西北大学地质学系,陕西西安710069

出　　处：《西安工程学院学报》2002年第1期25-28,共4页Journal of Xi'an Engineering University

摘　　要：冀中坳陷的下第三系构造背斜主要形成于伸展断陷背景下 ,与正断层系统联系紧密。根据背斜与断层关系 ,基本类型可分为 3种 ,即纵向、横向和复合背斜 ;根据具体构造力学背景 ,这 3种背斜可进一步分为 8类 ,即 :重力滑动型、张扭型、拆离拱张型、逆牵引型、断层线偏转型、侧接型、复杂变换型、复合型。这些背斜是构造演化的产物 ,在一定程度上指示了坳陷内的构造演化规律 ,同时又是形成油气藏的有利圈闭 。The Paleogene tectonic anticlines in Jizhong Depression related closely to extensional faults associated with dextral shear were developed in extensional tectonic settings. According to the relation with the fault system, the anticlines are classified initially into the longitudinal, the transverse and the composite, and further by dynamically tectonic settings into 8 kinds: the gravitational sliding, the transtensional, the detached bending, the reverse-drag the fault-line deflection, the overlapping, the complicatedly transverse, and the composite. As a result of tectonic evolution, these anticlines are indicators of transtensional movement, and are favorite traps of petroleum, in which a good amount of hydrocarbon has been exploited.

关 键 词：冀中坳陷下 第三系 构造背斜 成因分类 断裂作用 油气藏 

分 类 号：P618.13[天文地球—矿床学]