六盘山盆地地质构造卫星图像解译

遥感图像所揭示的宏观信息,表明六盘山盆地的边界具有性质多样、分期活动等特点,走滑断裂、逆冲断裂为主要边界断裂。由卫星图像上影纹结构、水系和色调异常对盆地内局部构造和线性构造进行解译和分析后,将盆地内的二级构造带分为三种主要类型,即走滑扭动型、逆冲挤压型和拉张伸展型。研究认为海原坳陷为有利含油气区块,樊家山构造为最有利局部构造。最后提出了开展六盘山盆地非常规油气勘探的建议。

Interpretation of Satellite Image for Geological Structure in Liupanshan Basin

The microscopic information revealed by satellite image shows that the boundary of the Liupanshan Basin has diversified characteristics and becomes active in different stages, the strike-slip fractures and thrusting fractures are the predominant boundary fractures. Based on the interpretation and analysis on the local structures and linear structures in the basin by the image structure, drainage and tonal anomaly on the satellite image, the second-order structural belts in the basin can be classified as three types, i.e. strike-slip shear type, thrusting compressional type and extensional type. The study shows that Haiyuan sag is a favorable oil/gas bearing, zone, and Fanjiashan structure is the most favorable local structure. Finally, a suggestion about unconventional petroleum exploration in the Liupanshan Basin is proposed in the paper.