• 责任者：Li Guoxin (State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Xu Shenglin
• 刊名：Geology in China
• 出版年：2012
• 卷期：39(1)
• 关键词：中侏罗世 ; Middle Jurassic ; 岩相古地理 ; lithofacies paleogeography ; 砂体 ; sand bodies ; 四川 ; Sichuan Province
• 页码：p.96-105
• 图表：6 illus., 28 refs.
• 分类号：1200
• issnNo：ISSN1000-3657
• isbnNo：CN11-1167/P

Based on the classification of base level cycle sequence, and aimed at the distribution characteristics of sand bodies, this paper has divided Upper Shaximiao Formation into base level cyclic sequences of one long period (L1) and four moderate periods (M1, M2, M3, M4). Sequence-based lithofacies and paleogeographic maps of Upper Shaximiao Formation were compiled on the basis of mapping units of middle period base level cyclic sequence. The result shows that meandering river delta facies and lake facies were developed during the stage of M1 and M2. During the stage of M3 and M4, the depositional setting was changed and characterized by the development of alluvial fan facies, alluvial plain facies, braided river delta facies and lake facies.