• 责任者：Li Fengjie (Institute of Sedimentary Geology ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Liu Qi
• 刊名：Journal of Stratigraphy
• 出版年：2010
• 卷期：34(1)
• 关键词：二叠纪 ; Permian ; 米兰柯维奇理论 ; Milankovich theory ; 四川盆地 ; Sichuan Basin
• 页码：p.35-42
• 图表：5 illus., 1 table, 24 refs.
• 分类号：1200
• issnNo：ISSN0253-4959
• isbnNo：CN32-1187/P

On the basis of thickness and cycle change of lithology and lithofacies of field profile, and guided by accommodation theory, the authors analyzed the cycle sequences of the Permian System at the Yanggudong profile in Dukou Town, Xuanhan County, Northeastern Sichuan Basin. Three types, five subtypes and 118 high-frequency sequence cycles are recognized in the Chihsia Formation, Maokou Formation and upper Wujiaping Formation. 49 high-frequency sequence cycles are identified in the Changhsing Formation. The results reveal that the Changhsing Formation shows Milankovitch sedimentary cycles of 124, 44.89, 35.11, 21.16 and 17.72 ka. Relative sea level change was the major controlling factor for the development of third-order sequences, whereas climate change was important in the development of higher frequency cycles.