辽河盆地构造样式与圈闭发育特征

在详细分析辽河盆地构造样式的基础上,将其分为基底卷入型和盖层滑脱型两大类,前者分为阶梯状伸展构造、张性正断层构造组合、披覆构造、变换构造带、扭动构造及正反转构造等6亚类,后者可分为滑脱正断层构造组合、底辟构造等2亚类。构造多期活动,因此部分构造样式相互叠加。不同的构造样式具有不同的圈闭发育特征。依据构造样式和圈闭特征,将辽河盆地的圈闭划分为构造圈闭和非构造圈闭两大类。

Structural Styles and Trap Development Characteristics in Liaohe Basin

The structural styles in Liaohe basin are classified into basement-involved structures and caprock de-tached structures.The former are subdivided into six types including stepped expanding structure,extensional normal fault structural combination,drape structure,transfer zones,wrench structure and positive inversion structure.The latter are subdivided into two types,i.e.,detached normal fault structure,diapir structure.There were multi-stage tectonics in this area,thus some structures are superimposed.The characteristics of trap developments vary from one style to anoth-er.Based on the structural styles and trap characteristics,the traps in Liaohe basin are classified into structural trap and non-structural trap.