CAJ | 학술논문

方正断陷的主要断裂在演化序列上分为长期发育、早期发育和晚期发育,与盆地的形成和演化之间存在良好的对应关系.在平面上,断裂系统主要由与断陷走向一致的NE向张剪性断层和近EW走向的正断层组成.方正断陷发育的构造样式可归纳为"走滑型扭动构造"、"台阶式断块型"和"掀斜反转型",并且不同的构造样式对油气的分布起着重要作用.
방정단함적주요단렬재연화서렬상분위장기발육、조기발육화만기발육,여분지적형성화연화지간존재량호적대응관계.재평면상,단렬계통주요유여단함주향일치적NE향장전성단층화근EW주향적정단층조성.방정단함발육적구조양식가귀납위"주활형뉴동구조"、"태계식단괴형"화"흔사반전형",병차불동적구조양식대유기적분포기착중요작용.
Fangzheng fault depression is the north part of the Yishu garbon. Under the strike-slip influence of Tanlu fault, its structure is commonly complex, mainly because of its complicated fault system and tectonic style. Fangzheng fault depression has three evolution types of faults, and well matched with the basin formation and evolution. The three types of fault are the secular development fault, the fault developing on the earth stage and the fault developing on the late stage. And the fault system of Fangzheng fault depression is mainly composed of EW strike extensional normal faults and NE strike wrench faults. The main tectonic style of the Fangzheng fault depression can be subdivided into 3 types, the strike-slip-shear tectonic system, the step block fault tectonic system and the tilting-reversed tectonic system. And each tectonic system has an important effect on the distribution of the oil and gas.