Different Distribution of Lacustrine Facies and Its Controlling Factors during Rifting Stage, Zhu Ⅰ and Zhu Ⅲ Depressions, Pearl River Mouth Basin
摘要
The distribution of lacustrine facies during rifting stage in the Zhu Ⅰ and Zhu Ⅲ Depressions of the Pearl River Mouth Basin shows that lacustrine facies spread much more widely in the Zhu Ⅰ Depression. It might be explained by the smaller extensional level of the Zhu Ⅲ Depression. The extensional level of a depression is affected by many factors,such as stress orientation,basement lithology and region faults. The differences of basement lithology,sag distribution,large potential fault below Cenozoic and sag-controlling fault orientation lead to the different extensional level of the Zhu Ⅰ and Zhu Ⅲ Depressions,and further control the different distribution of lacustrine facies.