反转构造的运动学分析与形态类型

反转构造是具有重要油气勘探意义的一种复合构造样式,伸展盆地发育的3套层序和控制性断层上的零点是认识反转构造的基本参数:由此导出的反转率、位移—距离曲线和生长指数可用于运动学分析。含油气盆地中的2大类4亚类反转构造分别形成于面状断层的扩展褶皱作用和铲状断层的弯曲褶皱作用。构造反转可对油气聚集和油气勘探造成多方面的影响。

KINEMATIC ANALYSIS AND GEOMETRIC TYPES OF INVERSION STRUCTURE

Inversion structure is a most important style of superposed structure in petroleum exploration. Three sequences deposited in an extensional basin and null points along basin-controlled fault are the basic parameters.from which inversion ratio.displacement-distance plot and growth index can be derived and applied to kinematic analysis for inversion structure. In petroleum basins,two types and four subtypes of inversion structure,produced by planar-fault propagation folding and listric-fault bend folding respectively,have been recognised. Tectonic inversion may re-suit in various effects on petroleum accumulation and exploration.