Features and dynamic mechanisms of Cenozoic tectonic migration and its impact on the hydrocarbon accumulation in the northern South China Sea

YIN Zhengxin; CAI Zhourong; WAN Zhifeng; LYU Baofeng

doi:10.1007/s13131-015-0603-1

南海北部新生代构造迁移的特征、动力学机制及对油气成藏的影响

doi: 10.1007/s13131-015-0603-1

School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China;Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, China;Key Laboratory of Offshore Oil Exploration and development of Guangdong Higher Education Institutes, Guangzhou 510006, China

基金项目: The National Natural Science Foundation of China under contract No. 4106035; the Project of Geological and Geophysical Maps in China's Seas and Its Adjacent Regions under contract No. GZH200900504.

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- 收稿日期: 2013-12-03
- 修回日期: 2014-09-07

Features and dynamic mechanisms of Cenozoic tectonic migration and its impact on the hydrocarbon accumulation in the northern South China Sea

School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China;Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, China;Key Laboratory of Offshore Oil Exploration and development of Guangdong Higher Education Institutes, Guangzhou 510006, China

摘要

摘要: 南海北部大陆边缘位于东南亚复杂的构造体系中, 构造迁移活动是一系列区域构造运动影响的必然结果. 本文综合分析南海北部地质、地球物理资料, 从新生代构造运动的划分、地层横向变化规律以及主要盆地裂陷演化的差异性等方面论证了南海北部新生代构造呈有规律的迁移主要受南海多次幕式构造运动的制约. 此外, 我们对地层的横向变化特征和主要盆地不同的演化模式也进行了分析. 南海北部新生代的构造迁移特征主要表现为: (1)南海北部大陆边缘新生界由北向南呈幕式裂陷;(2)主要盆地的裂陷和沉降时间从北向南依次变新, 表明南海北部新生代的构造和沉积活动由北向南迁移;(3)横向上的构造迁移整体上表现为无规律, 但在局部区域构造迁移活动由西向东. 结合南海北部构造迁移特征以及区域构造演化背景分析认为印度-欧亚板块碰撞形成的远程滞后效应是南海北部新生代构造迁移的主要动力学机制. 构造迁移在南海北部各盆地含油气系统以及油气成藏组合等方面有重要体现, 充分认识构造迁移特征对把握南海北部油气成藏规律和指导油气勘探具有重要参考意义.
- 构造迁移 /
- 南海北部 /
- 新生代 /
- 油气成藏
Abstract: The northern continental margin of the South China Sea (SCS) is located within the tectonic system of Southeast Asia, an area with a great deal of tectonic migration due to the regional tectonic movements. The available geological and geophysical data of the area are comprehensively analyzed in order to demonstrate the typical migration patterns of the Cenozoic tectonics in the northern SCS caused by the episodes of the Cenozoic tectonic movement. Furthermore, the lateral variation characteristics of the strata and the different evolution patterns of the main basins' features are assessed. It primarily focus on: (1) the Cenozoic episodic rifting from north to south in the continental margin of the northern SCS; (2) the rifting and depression time of the main basins progressively become younger as one goes from north to south, signifying that the migration of both the tectonics and the sediments within the northern SCS travelled from north to south during the Cenozoic; and (3) the lateral tectonic migration on the direction of EW is not regular in total, but in some local areas the trending of the tectonic migration is from west to east. The analysis of the tectonic migration features of the northern SCS, in combination with the regional tectonic evolution background, indicates that the observed remote lagging effect, resulted from the India-Eurasia plate collision, is the main dynamic mechanism involved in the tectonic migration within the northern SCS. The tectonic migration has significant influence on both the organization of petroleum deposits and on the hydrocarbon accumulation within the basins in the northern SCS; comprehensive understanding of this dynamic system is of great reference value in predicting the hydrocarbon accumulation and has the potential to have an enormous impact in discovering new deep reservoirs for the future oil-gas exploration.
- tectonic migration /
- Cenozoic /
- hydrocarbon accumulation /
- northern South China Sea

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参考文献(46)

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南海北部新生代构造迁移的特征、动力学机制及对油气成藏的影响

doi: 10.1007/s13131-015-0603-1

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Features and dynamic mechanisms of Cenozoic tectonic migration and its impact on the hydrocarbon accumulation in the northern South China Sea

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