珠江口盆地断裂构造特征及对沉积盆地的控制作用  

Characteristics of Fault Structures in Pearl River Mouth Basin and Control Effect of Them on Sedimentary Basin

作　　者：夏玲燕 林畅松[1] 李筱[2] 胡悦 XIA Lingyan;LIN Changsong;LI Xiao;HU Yue(School of Ocean Sciences,China University of Geosciences(Beijing),Beijing 100083,China;China Aero Geophysical Survey and Remote Sensing Center for Land and Resource,Geological Survey of China,Beijing 100083,China)

机构地区：[1]中国地质大学(北京)海洋学院,北京100083 [2]中国国土资源航空物探遥感中心,北京100083

出　　处：《西安石油大学学报（自然科学版）》2018年第5期1-8,16,共9页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：中国地质调查公益性地质调查项目"海南岛及周边航空物探调查"(121201203000160014)

摘　　要：以最新实测高精度1∶10万航磁数据为基础,综合重力、地震和地质资料,研究珠江口盆地基底断裂构造,重点分析了主干断裂F1、F2、F3、F4、F5、F6、F7、F8等。采用切线法计算盆地磁性基底深度,结合基底结构特征,分析基底断裂对沉积盆地的控制作用。研究表明:断裂对珠江口盆地的基底有控制作用,与后期盆地沉积坳陷的形成关系密切,NE向断裂为控盆断裂,控制前新生界盆地的沉积,NW向断裂控制次一级构造单元,通常为盆地内坳陷的边界,影响沉积凹陷的展布形态。The basement fault structure of Pearl River Mouth Basin was studied based on the latest high resolution aeromagnetic data,combined with gravity data,seismic profiles and basic geological data.The main basement faults F1,F2,F3,F4,F5,F6,F7 and F8 were emphatically analyzed.The magneticbasement depth of the basin was calculated using tangential method.The controlling effect of basement faults on the sedimentary basin was analyzed based on the characteristics of basement structure.The results show that,the faults have control effect on the basement of the Pearl River Mouth Basin,which are closely related to the formation of sedimentary depressions in the later period of the basin.NE-trending faults are the faults control the basin,they control the deposition of the Pre-Cenozoic basin.NW-trending faults control the secondary tectonic units,which are usually the boundary of depressions in the basin and affect the distribution of the sedimentary depressions.

关 键 词：基底断裂 珠江口盆地 沉积盆地 控制作用 

分 类 号：TE51[石油与天然气工程—油气田开发工程]