Paleogene sydepositional fault and its control on sequence architecture of Lingshui sag, deepwater area of Qiongdongnan Basin, South China Sea
Author(s): SONG Guangzeng, WANG Hua, SUN Zhipeng, LIU XiaOlOng, XU Meng, REN Jinfeng
Pages: 9-18
Year: 2014 Issue: 4
Journal: Journal of China University of Petroleum(Edition of Natural Science)
Keyword: 深水区; 同沉积断层; 层序构成样式; 构造地层格架; 坡折带;
Abstract: Based on geological and geophysical data, the Paleogene syndepositional fault and its control on sequence archi-tecture of lingshui sag were studied by analyzing the combination features and faulting-activity rate of the fault. The results show that three kinds of frameworks, i. e. , asymmetric graben, symmetric graben and half-graben, were developed individu-ally in the east, middle, and west of lingshui sag. Three kinds of structural paleogeomorphologies, i. e. , up-dip foot slope break belt, down-dip foot slope break belt and gentle slope-break belt, were developed in response to the changes of faulting-activity, which influenced the sequence-infill patterns. Different sequence-infill patterns distributing within tectono-strati-graphic frameworks have characteristic sequence architectures, which will favorably contribute to exploration of potential res-ervoirs and subtle oil pools in deepwater area.
Pages: 9-18
Year: 2014 Issue: 4
Journal: Journal of China University of Petroleum(Edition of Natural Science)
Keyword: 深水区; 同沉积断层; 层序构成样式; 构造地层格架; 坡折带;
Abstract: Based on geological and geophysical data, the Paleogene syndepositional fault and its control on sequence archi-tecture of lingshui sag were studied by analyzing the combination features and faulting-activity rate of the fault. The results show that three kinds of frameworks, i. e. , asymmetric graben, symmetric graben and half-graben, were developed individu-ally in the east, middle, and west of lingshui sag. Three kinds of structural paleogeomorphologies, i. e. , up-dip foot slope break belt, down-dip foot slope break belt and gentle slope-break belt, were developed in response to the changes of faulting-activity, which influenced the sequence-infill patterns. Different sequence-infill patterns distributing within tectono-strati-graphic frameworks have characteristic sequence architectures, which will favorably contribute to exploration of potential res-ervoirs and subtle oil pools in deepwater area.
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