摘要
本文根据层序地层学的基本原理，对塔里木盆地北部下石炭统沉积体系域的基本特征进行了描述。实际资料表明，该套层系属于夹持在早、晚海西期两个构造运动不整合面之间的一个二级旋回层序，层序内部发育海侵体系域和高水位体系域，缺失低水位体系域沉积。有利于油气聚集的区块是海侵体系域的障壁砂坝和高水位体系域的潮道沉积。
Abstract Based on the principles of sequence stratigraphy,the paper described the basic characteristics of depositional system tract in the Lower Carboniferous.Field data showed that the system is a secondary cyclic sequence interbedded between 2 tectonic unconformities of the Early and Late Variscan periods.A transgressive system domain and a highstand system domain were developed within the sequence,with the sediments of lowstand system domain being absent. Favourable areas for oil/gas accumulation are barrier bar facies zones developed in the transgressive system domain and tidal channels developed in the highstand system domain.
出处
《石油实验地质》
CAS
CSCD
北大核心
1996年第2期168-173,共6页
Petroleum Geology & Experiment
基金
"八五"国家重点攻关科技项目
