【摘要】 通过对黄骅拗陷孔店凸起及其周边区域地震剖面的分析,获得对孔店凸起构造格架特征和上覆地层特征的认识,从而探讨孔店凸起的构造演化史,将孔店凸起沉降曲线和基底沉降曲线、拉张量和拉张率曲线进行对比分析,然后结合孔店凸起的形态特征及其周边的构造格架,探讨孔店凸起发展演化的动力学机制。孔店凸起经历了隆升—沉降—再次隆升—再次沉降4个阶段:孔一下亚段沉积期开始孕育,形成低凸起,到孔一上亚段沉积期发生较大规模的隆升,经历了沙河街期短暂的沉降之后,在东营期孔店凸起再次发生隆升,新近纪以来,孔店凸起随着基底沉降再次进入沉降阶段。初步确认孔店凸起的形成与演化是沧东断层和徐西断层伸展运动和走滑运动共同作用的结果,并与主干断层(沧东断层)产状有一定关系。更多还原

【Abstract】 By analyzing the seismic section of the Kongdian salient and its surrounding areas,this paper cognizes the tectonic framework characteristics of the Kongdian salient and overlying strata and approaches the tectonic evolution history of the Kongdian salient.The low salient began to gestate in the deposition period of the lower Kongd 1 formation,the salient had a large scale uplifting in the deposition period of the higher Kongd 1 formation,after the short deposition in the deposition period of Shahejie Formation,the Kongdian salient began to uplift again in the deposition period of Dongying Formation.Since the Neogene,the Kongdian salient occurred settlement again.So,in Cenozoic,the Kongdian salient experienced four stages: uplifting-subsiding-uplifting-subsiding.To the dynamic mechanism of the tectonic evolution of the Kongdian salient,firstly,this paper makes the comparative analysis of the settlement curve of the Kongdian salient,the settlement curve of the basement,the settlement of the extensional amount and the extensional rate.Combined with the morphological characteristics of the Kongdian salient and its tectonic framework characteristics,the authors preliminarily have an idea that the formation and evolution of the Kongdian salient are due to the extensional movement and the strike-slip movement of the Cangdong fault and the Xuxi fault,and also,have a certain relationship with the occurrence of the main fault(Cangdong fault).更多还原