• 责任者：Duan Zhiming (Chengdu Institute of Geology and Mineral Resources ; Chengdu 610082 ; China) ; Zhong Chengquan
• 刊名：Geology in China
• 出版年：2009
• 卷期：36(2)
• 关键词：沉积序列 ; sedimentary sequence ; 羌塘盆地 ; Qiangtang Basin
• 页码：p.355-365
• 图表：6 illus., 1 table, 18 refs.
• 分类号：0803
• issnNo：ISSN1000-3657
• isbnNo：CN11-1167/P

Based on core logging and sample analysis of Qiangzi Well-2 petroleum shallow drilling hole in southern Qiangtang Basin, the authors hold that the southern Qiangtang Basin was in the evolution stage of passive margins in Middle Jurassic Bajocian and Aalenian period, and formed an upward coarsening and shoaling delta facies prograding sequence of Sewa Formation. On the cumulative curve in the grain size arithmetic probability graph, characteristics of saltation mass and suspension are obvious. The C-M diagram of grain sizes is characterized by typical braided river delta deposition. Pollen analysis also indicates a dry and hot climate of tropical and subtropical zones.