CAJ | 학술논문

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。
응용층서지층학원리，통과대지진、찬정、측정、실측로두부면종합분석，장이리분지이저요함수서구군화분위7개삼급층서。재련정층서지층부면기출상건립수서구군층서지층격가。이층서위단원분석침적체계적분포화연화급취매특정。매층주요발육재호확체계역화고위체계역。기저구조침강화물원공급시결정취매중심천이적중요인소，공동공제착매층적공간전포。
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.