摘要
通过钻孔岩心和测井资料对赛汉塔拉组下段层序地层、沉积相以及聚煤规律进行研究。主要识别的界面为不整合面、沉积相转换面和河道下切谷侵蚀面,将其划分为位体系域和湖扩体系域组;聚煤作用发生在低位体系域中后期,并且三角洲平原是聚煤作用的最有利场所。
According to drilling core analysis and logging data, the sequence stratigraphy, sedimentary facies and coal accumulation characteristics of the bottom of the Saihantala formation is analyzed. Two key stratigraphic surfaces are recognized which include the unconformity, sedimentary facies shifting and the incised valley. The bottom of Saihantala formation is made up of LST and EST. Coal accumulation process took place during the later of LST periods. Coal accumulation was significantly controlled by basin subsidence, and obviously the deltaic plain is the best position for accumulation.
出处
《煤炭技术》
北大核心
2017年第7期140-143,共4页
Coal Technology
关键词
聚煤规律
层序地层
赛汉塔拉组下段
coal accumulation
sequence stratigraphy
lower segment of Saihantala formation
