摘要
Distributional characteristics of sedimentary facies was studied in order to analyze sedimentary environment of Liuzhong district in lower Kelamayi reservoir The sedimentary facies of study area consists of alluvial fan which is mainly middle fan and fan fringe. Middle fan parfacies is divided into water way, braided stream sand island and sheetflood area based on lithology, structure and log presentation. Fan fringe parfacies is divided into runoff waterway and flood spillway. Distributional regulation of microfacies in sedimentary cycle was pointed out.