摘要
在对南中国海西沙海域地震资料综合对比分析的基础上,本文描述了西沙海域的地震反射特征,并依据地震地层学原理,利用地震反射波的振幅、连续性、内部结构和外部形态等地震反射参数特征,将该区域地层自上而下划分为A.B.C.D四个地震层序:层序A代表从海底到反射界面的地层;层序B代表从反射界面到T_2反射界面的地层;层序C代表从T_2反射界面到T_3反射界面的地层;层序D代表从T_3反射界面到T_g反射界面的地层。文中就各层序内不同的地震相参数特征进行了相应的地质解释。最后作者试图对该区的沉积发育史及其含油气远景作一初步的探讨。
On the basis of comprehensive comparison and analysis of seismic data from Xishaarea of the South China Sea,this paper presents the characteristics of seismic reflectionsin the area. An interpretation of seismostratigraphy is carried out according to the ampli-tude,continuity,internal structures and external features of the reflection. Therefore,four seismic sequences are divided:sequence A between floor and T,sequence B betweenand T,sequence C between T_2 and T_3,and sequence D between T_s and Tg. In this pa-per,a geological analysis of the four sequences has been made on the basis of the para-metric characteristics of the seismic facies.Finally,author tries to study the history ofthe sedimentary development and potential petroleum resources in Xisha area of theSouth China Sea.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1995年第1期91-105,共15页
Marine Geology & Quaternary Geology
关键词
南海
陆坡
西沙海域
沉积发育史
含油气
the northern slope of the South China Sea Xisha area seismi sequences seismic facies the history of sedimentary development potential petroleum resources