| 琼东南盆地深水区主要构造因素与成盆机制分析-地震解释与物理模拟实验 |
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| 引用本文： | 孙珍,王振峰,王章稳,孙志鹏,张伟,何丽娟.琼东南盆地深水区主要构造因素与成盆机制分析-地震解释与物理模拟实验[J].海洋学报(英文版),2015,34(4):32-40. |
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| 作者姓名： | 孙珍 王振峰 王章稳 孙志鹏 张伟 何丽娟 |
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| 作者单位： | 中国科学院南海海洋研究所边缘海地质重点实验室, 广州 510301, 中国,中海石油有限公司湛江分公司, 湛江, 524057, 中国,中海石油有限公司湛江分公司, 湛江, 524057, 中国,山东省地质测绘院, 济南, 250013, 中国,中海石油有限公司湛江分公司, 湛江, 524057, 中国,中海石油有限公司湛江分公司, 湛江, 524057, 中国 |
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| 摘 要： | Located at the northwest continental slope of the South China Sea, the Qiongdongnan Basin bears valley-shaped bathymetry deepening toward east. It is separated from the Yinggehai Basin through NW-trend...
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| 关 键 词： | 张裂结构 盆地发育机制 剖面解释 物理模拟实验 琼东南盆地 |
| 收稿时间： | 2014/6/21 0:00:00 |
| 修稿时间： | 2014/9/28 0:00:00 |
Structure and kinematic analysis of the deepwater area of the Qiongdongnan Basin through a seismic interpretation and analogue modeling experiments |
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| SUN Zhen,WANG Zhenfeng,SUN Zhipeng,WANG Zhangwen,ZHANG Wei and HE Lijuan.Structure and kinematic analysis of the deepwater area of the Qiongdongnan Basin through a seismic interpretation and analogue modeling experiments[J].Acta Oceanologica Sinica,2015,34(4):32-40. |
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| Authors: | SUN Zhen WANG Zhenfeng SUN Zhipeng WANG Zhangwen ZHANG Wei and HE Lijuan |
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| Affiliation: | 1.Key Laboratory of Chinese Academy of Sciences for Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China2.Zhanjiang Branch of China National Offshore Oil Corporation Limited, Zhanjiang 524057, China3.Shandong Province Geological Prospecting Institute, China Chemical Geology and Mine Bureau, Jinan 250013, China |
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| Abstract: | Located at the northwest continental slope of the South China Sea, the Qiongdongnan Basin bears valley-shaped bathymetry deepening toward east. It is separated from the Yinggehai Basin through NW-trending Indo-China- Red River shear zone, and connected with NW subsea basin through the Xisha Trough. Along with the rapid progress of the deepwater exploration, large amounts of high resolution geophysical and geological data were accumulated. Scientific researches about deepwater basins kept revealing brand new tectonic and sedimentary discoveries. In order to summarize the structural features and main controlling factors of the deepwater Qiongdongnan Basin, a series of researches on basin architecture, fault activities, tectonic deformation and evolution were carried out. In reference to analogue modeling experiments, a tectonic situation and a basin formation mechanism were discussed. The researches indicate that: the northern boundary of the Qiongdongnan Basin is strongly controlled by No. 2 fault. The overlapping control of two stress fields from the east and the west made the central depression zone extremely thinned. Combined with the changed stress field, the segmentation of a preexisting weakness zone made the sags in the east experiencing different rifting histories from the west ones. The NE-trending west segment of the Qiongdongnan Basin experienced strong rifting during Eocene, while the roughly EW-trending sags in the east segment show strong rifting during late Eocene and early Oligocene. Local structures such as NW-trending basal fault and inherited uplifts controlled the lateral segmentation. So first order factors such as regional stress field and preexisting weakness zone controlled the basin zonation, while the second order factors determined the segmentation from east to west. |
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| Keywords: | rifting structure basin formation mechanism profile interpretation analogue modeling experiments Qiongdongnan Basin |
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