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塔里木盆地北部早石炭世沉积体系域的基本特征
石油实验地质
1996年 18卷 第2期
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Title
BASIC CHARACTERISTICS OF THE EARLY CARBONIFEROUS DEPOSITIONAL SYSTEM TRACT IN THE NORTH OF THE TARIM BASIN
Authors
Ma Lixiang
Wan Jingping
Wang Shifeng
Wang Genchang
Qu Xiaoguang
单位
中国地质大学 武汉430074
2. 地矿部西北石油地质局地质大队 乌鲁木齐830011
Organization
China University of Geosciences, Wuhan
2. Geology Party of Northwest China Bureau of Petroleum Geology, MGMR, Urumqi 830011
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.
关键词：
变形盆地;
早石炭世;
层序地层学;
沉积体系域;
基金项目
“八五”国家重点攻关科技项目:塔里木盆地北部志留一二叠系储盖条件及油气富集条件研究
DOI
https://doi.org/10.11781/sysydz199602168
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