煤田地质与勘探2018，Vol.46Issue(1)：20-27,8.DOI:10.3969/j.issn.1001-1986.2018.01.004
淮南煤田含煤岩系沉积相类型特征与演化——以新集井田1001钻孔为例
Characteristics and evolution of sedimentary facies types of coal measures in Huainan coalfield——A case study of well 1001 in Xinji coal mine
摘要
Abstract
Based on the core observation and sample collection of Carboniferous-Permian Taiyuan Formation,Permian Shanxi Formation and Xiashihezi Formation of well 1001 in Huainan coalfield,we carried out microscopic identification,particle size analysis and X-ray diffraction analysis of mineral composition.Based on the results of previous studies and microfacies analysis,we explored the characteristics and evolution of sedimentary facies types of coal-bearing rock series in Huainan coalfield.The results show:during early stage of Late Carboniferous,transgression and regression happened frequently,Taiyuan Formation in the study area developed,barrier coast and tidal flat depositional system,mud flat,mixed flat and limited subtidal flat microfacies coexisted,three large-scale transgressions occurred in general,which represented the filling stage of epeiric sea.During Early Permian the sea level dropped,in the study area,delta front depositional system,distal bar,mouth bar,distributary channel underwater,underwater natural levee and diversion bay microfacies symbiosis developed in Shanxi Formation,the delta continued construction under the destruction.In late stage of Early Permian,in Xiashihezi Formation delta plain depositional system developed,distributary channel,natural levee,peat swamps and swales microfacies coexisted.The study area entered into the continental delta depositional phase.关键词
含煤岩系/钻孔岩心/粒度分析/沉积微相Key words
coal measures/drill core/particle size analysis/sedimentary microfacies分类
能源科技引用本文复制引用
余坤,杨开珍,靖建凯,余可龙,邵春景,屈争辉..淮南煤田含煤岩系沉积相类型特征与演化——以新集井田1001钻孔为例[J].煤田地质与勘探,2018,46(1):20-27,8.基金项目
国家自然科学基金项目(41430317,41302130) （41430317,41302130）
国家级大学生创新训练项目(201510290062)National Natural Science Foundation of China(41430317,41302130) （201510290062）
National College Students Innovation Training Program(201510290062) （201510290062）
