黄骅坳陷中区中生代构造演化  

EVOLUTION OF THE MESOZOIC STRATA IN THE MIDDLE RANGE OF THE HUANGHUA DEPRESSION

作　　者：楼达[1] 李三忠[1] 金宠[1] 周永刚[1] 刘博[1] 许淑梅[1] 戴黎明[1] 周立宏[2] 高振平[2] 

机构地区：[1]中国海洋大学海洋地球科学学院,海底科学与探测技术教育部重点实验室,青岛266100 [2]中国石油大港油田公司,大港300280

出　　处：《海洋地质与第四纪地质》2008年第3期43-53,共11页Marine Geology & Quaternary Geology

基　　金："黄骅坳陷南部滩海及邻区MZ-P地层展布和储层特征"项目

摘　　要：渤海湾盆地地区中生代构造演化与样式始终不明朗,特别是对燕山期变形始终存在争议,故选择黄骅坳陷中区中生界作为重点剖析对象,通过大量地震剖面的解释和平衡剖面技术复原古构造演化的研究,并结合前人研究成果和区域构造背景,提出黄骅坳陷中区中生代演化过程可大致分为4个阶段:印支晚期东西向宽缓褶皱及后期逆冲构造变形期、燕山早期挤压走滑构造变形期、燕山中期继承性挤压与右旋张扭构造变形期、燕山晚期—喜山期区域性伸展构造变形期。The Mesozoic structural pattern and evolution of the Bohai Bay basin is debated until now. Especially the Yanshanian deformation pattern is a key problem. We try to select the middle range of the Huanghua Depression of the Bohai Bay basin to study structures of this area, using a large number of seismic profiles. The Mesozoic evolution in the middle range of the depression can be mainly divided into four periods by using the balanced cross-section technique to reconstruct palaeo-structure in conjunction with tec- tonic setting. The first-generation structures are gentle east-west-plunging folds and the following eastwest-striking thrust formed in the late Indosinian. The second-generation strustures are NNE-plunging folds and the following strike-slip faults formed in the early Yanshanian. In the middle Yanshanian, a series of structures were under the ongoing compression, subsequently the dextral normal-slip faults formed under the extension. At last, some normal faults in this area were under regional intensive extension from the late Yanshanian to the early Himalayan.

关 键 词：平衡剖面 构造演化 中生代 黄骅坳陷中区 

分 类 号：P736.1[天文地球—海洋地质]