东海陆架盆地南部中生界的残留厚度  

RESIDUAL THICKNESS OF THE MESOZOIC IN THE SOUTHERN EAST CHINA SEA SHELF BASIN

作　　者：丛尧 刘展 陆凯[2] 孟祥君[2] 张雪峰 CONG Yao LIU ZhanI LU Kai MENG Xiangjun ZHANG Xuefeng(School of Geoscienees in China University of Petroleum, Qingdao 266580, China Qingdao Institute of Marine Geology, CGS, Qingdao 266071, China)

机构地区：[1]中国石油大学地球科学与技术学院,青岛266580 [2]中国地质调查局青岛海洋地质研究所,青岛266071

出　　处：《海洋地质前沿》2017年第5期39-44,共6页Marine Geology Frontiers

基　　金：国家"863"计划项目(2012AA09A20107)

摘　　要：以最新的地震资料和重力资料为基础,结合钻井数据,采用密度多界面同时反演方法,得到了东海陆架盆地南部中生界顶底界面的埋深,据此编制了中生界残留厚度图。在此基础上,结合构造单元对中生界展布特征进行了分析。结果表明:除在雁荡低凸起构造高点局部缺失外,东海陆架盆地南部中生代地层分布广泛;中生界残留厚度在各个构造单元分布不均,但总体上具有"西北薄东南厚、南北分块"的特征,东部基隆凹陷为整个研究区的沉降中心。In this paper, we calculated the depth of the upper and lower boundaries of the Mesozoic for the southern part of the East China Sea Shelf Basin based on the newly acquired seismic, gravity and the drilling data. As the result, the residual thickness of the Mesogoic is obtained. The method of multi-interface density inversion is adopted for the calculation of residual thickness. On the basis, we analyzed and studied the distribution pattern of the Mesozoic. The research shows that, except the peak of the Yandang low uplift, where the Mesozoic is partly missing, the Mesozoic strata are widely distributed in the Southern East China Sea Shelf Basin. The data also shows that the residual thick- ness of the Mesozoic are unevenly distributed in different tectonic units. In a general view,it is thicker in the east and thinner in the west and also shows a structural pattern of ＂north-south block＂. The Keelung Sag remains the sedimentation center of the study area.

关 键 词：东海陆架盆地 中生界 残留厚度 密度界面反演 

分 类 号：TE121.1[石油与天然气工程—油气勘探]