【摘要】 在对渤海海域13条区域地震剖面进行精细解释的基础上,解剖新生代盆地结构特征,确定构造单元划分标准,并进行一、二级构造单元划分。渤海海域不同地区新生代盆地结构存在较大差异,沉积地层时代和厚度也有所不同。根据地质结构和沉积地层的差异,渤海海域可分为辽东湾坳陷(海域)、渤中坳陷、济阳坳陷(海域)、黄骅坳陷(海域)和埕宁隆起(海域)等5个一级构造单元,进一步可划分出二级构造单元35个,其中凸起13个、低凸起4个、凹陷18个。渤海海域新生代盆地地质结构的精细解剖和构造单元划分对优选有利油气勘探区带具有重要指导意义。更多还原

【Abstract】 Based on a refined interpretation of 13 regional sismic sections in Bohai sea,the architecture of Cenozoic offshore basins is anatomized,and the structural elements of first and second orders are divided by establishing a division criterion.There are considerable differences in the Cenozoic basin architecture among various parts of Bohai sea,with their stratigraphic ages and thicknesses quite variable.Five first-order structural elements can be divided in Bohai sea,including Liaodongwan(offshore),Bozhong,Jiyang(offshore) and Huanghua(offshore) depressions and Chengning uplift(offshore),according to the variability in geological architecture and sedimentary sequence.Furthermore,thirty-five second-order structural elements have been recognized,including thirteen rises,four low rises and eighteen sags.This refined anatomy of Cenozoic basin architecture and the division of structural elements may be important to guiding optimization of favourable exploration plays in Bohai sea.更多还原