摘要
利用在南沙海域万安盆地所采集的地震、重磁资料及钻井、地质资料，对该盆地的地震反射特征，沉积特征、区域地质、构造特征及构造发展史进行了简要的论述。本文以该区ＴＧ（或Ｔ５）深度资料为基础，并利用ＣＣＯＰ年刊发表的新生代基底深度资料，初步圈定了万安盆地的边界，并对盆地二级构造单元进行了划分，将盆地划分为５坳３隆、坳隆相间的构造格局。
On the basis of seismic , gravity-magnetic,drilling and geologic data collected fromthe Wan'an Basin in the Nansha sea area ,this paper makes a simple description of seis-mic reflection ,sedimentation,regional geology ,tectonic feature and tectonic developmenthistory of the basin. According to Tg(or T5)depth data of the area and also Cenozoicbasement depth data published annually by CCOP,the outline of the basin is tentativelydetermined , and secondary tectonic units of the basin are considered to show a tectonicframework of depressions alternating with uplifts(5 depressions and 3 uplifts).
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1995年第2期35-48,共14页
Marine Geology & Quaternary Geology
关键词
南沙海域
万安盆地
走滑盆地
地质构造
Nansha sea area Wan' an Basin strikeslip basin shear compression regional subsidence
