摘要
应用层序地层学原理,通过对地震、钻井、测井、实测露头剖面综合分析,将伊犁盆地伊宁凹陷水西沟群划分为7个三级层序。在连井层序地层剖面基础上建立水西沟群层序地层格架。以层序为单元分析沉积体系的分布和演化及聚煤特征。煤层主要发育在湖扩体系域和高位体系域。基底构造沉降和物源供给是决定聚煤中心迁移的重要因素,共同控制着煤层的空间展布。
Based on the principles and methods of the sequence stratigraphy,Shuixigou Group in Yining depression of Yili basin is divided into seven sequences.The sequence stratigraphic framework of Shuixigou Group is established based on sequence stratigraphic profiles.The distribution and evolution of sedimentary system and the characteristics of coal accumulation are analyzed within sequence framework.Coal seams mainly occur in the lake expansion system tracts and the highstand system tracts.The subsidence of basin base and sediment supply are important factors for migration of the coal-rich centers and control distribution of the coal-rich belt.
出处
《新疆地质》
CAS
CSCD
北大核心
2014年第1期125-129,共5页
Xinjiang Geology
基金
新疆地矿局董连惠教授级高工主持的中国地质调查局<新疆能源矿产资源远景调查评价项目>的部分内容
关键词
伊宁凹陷
层序地层
聚煤规律
水西沟群
Yining depression
Sequence stratigraphy
Coal accumulation
Shuixigou Group
