平衡剖面技术及其在济阳坳陷桩海地区的应用  

TECTONIC EVOLUTION OF THE ZHUANGHAI AREA,BOHAI BAY BASIN,EAST CHINA:THE APPLICATION OF BALANCED CROSS SECTIONS

作　　者：张荣强[1] 吴时国[2,3] 周雁[1] 余朝华[2] 冯德勇[4] 于正军[4] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [2]中国科学院海洋研究所海洋地质与环境重点实验室,青岛266071 [3]中国石油大学华东,青岛266555 [4]中石化胜利油田物探研究院,东营257022

出　　处：《海洋地质与第四纪地质》2008年第6期135-142,共8页Marine Geology & Quaternary Geology

基　　金：中国科学院知识创新重要方向性项目(KZCX2-YW-203);石油化工联合基金项目(40739904);山东省泰山学者专项基金

摘　　要：平衡剖面技术在研究盆地演化方面有着重要的作用,可以编制盆地发育演化剖面,广泛地用于研究石油构造分析。平衡剖面的最基本原理就是在地层变形前后物质的总量是不变的。利用2DMove软件对济阳坳陷桩海地区的两条地震剖面进行构造恢复,编制了构造发育剖面,恢复该区的构造演化史。桩海地区在三叠纪—中侏罗世由于印支运动的强烈挤压作用而抬升剥蚀;晚侏罗世—早白垩世时期,在中国东部发生了强烈的伸展作用,发育了大量的断裂和接受了巨厚的沉积地层;在晚白垩世,由于郯庐断裂的左行走滑作用,桩海地区抬升并遭受剥实;在古近纪,受区域构造伸展作用,桩海地区发育成为断陷盆地。古近纪末,发生右行走滑运动和构造抬升。新近纪以来该区表现为稳定的坳陷沉积盆地。The technique of balancing cross-sections play an important role in studying the tectonic history of sedimentary basins. It can restore structural growth history of sedimentary basin, and be widely used to analysis of petroleum structures. The principle of balancing cross-sections is that matter after strata de- formation keeps constant as that before deformation. In this paper, we selected two seismic profiles and compiled two structural growth sections in the Zhuanghai area of the Jiyang sag. The whole area sufferred from compression and uplifting during the Triassic-middle Jurassic phase because of intense extrusion stress related to the Indo-China movement. During the late Jurassic and early Cretaceous, intense exten- sion occurred in East China, and the whole area rifted, leading to the huge thickness of sedimentary se- quence. In the late Cretaceous, the area suffered from uplift and compression associated with the sinistral strike slip of the Tanlu fault. In the Palaeogene, a rifting basin developed in the area. Finally, it became stable and was placed in its present position by dextral strike-slip motion since Neogene.

关 键 词：平衡剖面 构造演化 构造复原 构造解释 济阳坳陷 

分 类 号：TE121.2[石油与天然气工程—油气勘探]