江汉盆地古潜山带结构特征

Structural features of Palaeoburial Hill Zone in Jianghan Basin

大断裂和古隆起是潜山带形成的主要控制因素,潜山带—大断裂—深洼陷具有密切的成生联系;潜山带展布方向以北东、北西向为主,基岩结构复杂、时代跨度大,内幕结构常为向斜,沉积盖层具有顶薄翼厚、剥蚀强度差异大的特征;潜山带具有形成潜山油藏的基本石油地质条件,有利于油气勘探。

Large-scale fault and palaeohigh are main controlling factors of the formation of Palaeoburial Hill Zone,and Palaeoburial Hill Zone,large-scale fault and deep depression have closed relations for genesis. Palaeoburial Hill Zone is characterized by the distribution in the dominant east-north and west-north orientation, complex basement structure,longer geologic age span, inner episode structure being generally syncline,sedimentary veneer having thin top and thick flank, and large differential erodibility. Palaeoburial Hill Zone has the basic petroleum geologic conditions of generating burial hill oil reservoirs and is favorable for oil and gas exploration.