周口坳陷东部及邻区构造演化  

Tectonic evolution in eastern Zhoukou Depression and its adjacent area

作　　者：刘健[1] 姚坤[1] 江凡[1] 

机构地区：[1]中国石油化工股份有限公司江苏油田分公司地质科学研究院,江苏扬州225009

出　　处：《复杂油气藏》2010年第3期27-30,共4页Complex Hydrocarbon Reservoirs

摘　　要：周口坳陷东部及邻区自古生代以来经历了多期构造运动。研究表明,晚三叠世末区内卷入了前陆变形,主要表现为一系列逆冲推覆构造及其伴生的宽缓褶皱。随着郯庐断裂带及其旁侧断裂系的大规模左行平移,早白垩世区内出现了走滑盆地,到早第三纪,区内由于广泛伸展活动而形成了大规模的断陷盆地,这些断陷盆地在晚第三纪初发生的喜山运动中,受压抬升、消亡。Eastern Zhoukou Depression and its adjacent area had experienced multi stage tectonic movements since Paleozoic. The research indicates that in late Triassic, the area came into foreland deformation which showed mainly a series of overthrust nappe structure and its associated broad fold. As the large - scale left lateral displacement of Tanlu fault zone and its side faults, strike - slip basin was appeared in the area in early Cretaceous. To early Tertiary, a large - scale fault basins were formed in the area due to wide extensional movements, which were pressured, lifted, and disappeared in Xishan movement occurred in late Tertiary.

关 键 词：周口坳陷 构造演化 印支期 早白垩世 走滑盆地 断陷盆地 

分 类 号：TE121.3[石油与天然气工程—油气勘探]